CN113230880A - Organic volatile gases (VOCs) treatment equipment and operation method thereof - Google Patents

Organic volatile gases (VOCs) treatment equipment and operation method thereof Download PDF

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CN113230880A
CN113230880A CN202110470503.5A CN202110470503A CN113230880A CN 113230880 A CN113230880 A CN 113230880A CN 202110470503 A CN202110470503 A CN 202110470503A CN 113230880 A CN113230880 A CN 113230880A
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module
adsorption
vocs
oleophobic
condensation
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CN113230880B (en
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黄方平
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Jiangxi Huanxinggu Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8678Removing components of undefined structure
    • B01D53/8687Organic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/05Separating dispersed particles from gases, air or vapours by liquid as separating agent by condensation of the separating agent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60Combinations of devices covered by groups B01D46/00 and B01D47/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1487Removing organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • B01D53/185Liquid distributors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
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    • B01D2259/804UV light

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Abstract

The invention relates to organic volatile gases (VOCs) treatment equipment and an operation method thereof, wherein the equipment comprises a shell, a condensation module, a renewable adsorption module, a photocatalytic module and a control module, a Laval jet type air inlet module, an oleophobic and hydrophobic filtering module and a waste liquid backflow collecting module, wherein the Laval jet type air inlet module, the condensation module, the oleophobic and hydrophobic filtering module, the renewable adsorption module and the photocatalytic module are connected through pipelines according to a treatment sequence; administer VOCs and dust through the condensation module, oleophobic hydrophobic filter module filters remaining VOCs and moisture along with the area, then loops through the adsorption module that can regenerate and the further thorough processing that will remain VOCs of photocatalysis module, accomplishes the administration of different kinds of VOCs and dust from this to the regeneration of adsorption module is realized to the backward flow module through the inside heating unit of adsorption module that can regenerate and output.

Description

Organic volatile gases (VOCs) treatment equipment and operation method thereof
Technical Field
The invention relates to the technical field of VOCs (volatile organic compounds) organic waste gas treatment, in particular to organic volatile gas (VOCs) treatment equipment and an operation method thereof.
Background
According to the analysis of '2020 and 2025 edition atmospheric pollution abatement industry government strategy management and regional development strategy research advisory report' in Zhongyan Puhua research report, PM2.5 and ozone become key abatement objects of atmospheric pollution prevention and treatment in the fourteen-five period, and one of the reasons for causing PM2.5 and ozone pollution is the continuously increasing emission and inadequate abatement of Volatile Organic Compounds (VOCs).
VOCs are mainly produced in industries such as coating, paint spraying, printing, fuel oil, chemical industry, medicine, cultivation, catering and the like, and are one of main contributors to atmospheric pollution; the existing treatment methods comprise adsorption, direct combustion incineration, catalytic incineration, absorption, condensation, photoelectrocatalysis and the like, but according to the research and discovery of our company, most factories adopt the single treatment method in the actual treatment process of VOCs in the past five years, and the treatment effect is poor;
in order to solve the problem, a large amount of manpower and material resources are input into a plurality of research and development mechanisms and units, for example, the invention patent of China, which is researched and applied by Nanjing Wood grain environmental science and technology Limited, has the application number of 201911321577.1 and is named as a high-efficiency composite movable organic volatile gas treatment device. Firstly, the VOCS gas is subjected to graded filtration through a primary filter screen and a high-efficiency filter screen, then is degraded through high-energy ions, enters an activated carbon filter screen for further filtration and adsorption, and is finally discharged from a gas outlet, so that the effect of efficiently treating the organic volatile gas is achieved; however, the invention has an important defect that the adopted multi-stage filter screens are consumables and need to be replaced periodically, and the replaced filter screens need to be further processed to be discarded, so that a large amount of manpower and material resources are wasted, and serious consequences are brought once the phenomenon of insufficient post-processing exists.
Compared with the prior art, the invention combines a micropore adsorption material and a photoelectrocatalysis technology, and adopts an adsorption mode without energy consumption to absorb VOCs in most of time. When the adsorption is saturated, the desorbed VOCs are further subjected to catalytic oxidation decomposition in a photoelectrocatalytic oxidation mode, and the adsorption material is regenerated, so that the energy consumption in the whole operation process can be effectively reduced; due to the fact that the concentration of the desorbed VOCs is high, the reaction efficiency of the photoelectrocatalytic oxidation is high, the reaction time is short, the cost of overall gas purification is greatly reduced, the method is suitable for purification treatment of low-concentration VOCs gas, and the method has the advantages of being high in purification efficiency, low in energy consumption, wide in application range and high in adaptability; the invention application solves the problem that the filter element cannot be recycled compared with the efficient compound type movable organic volatile gas treatment equipment developed and applied by Nanjing Wood grain environmental science and technology Limited, however, as is well known, in production workshops such as paint production and automobile spraying places, dust particles are often mixed with organic volatile gas, but the invention cannot solve the problem, because once a large amount of dust is sucked into the microporous gas adsorption regeneration module, the module can become a non-renewable element and loses the recycling function; in addition, when the concentration of the volatile gas is high, the microporous gas adsorption regeneration module cannot be completely adsorbed, the concentration of the organic volatile gas can suddenly rise in the heating desorption process after saturation, and the gas catalytic oxidation reaction module only depends on the subsequent process and is difficult to achieve the effect of removing the volatile gas by one hundred percent.
In order to solve the problem, the chinese patent invention, entitled water absorption type organic volatile gas processing apparatus and processing method, has application number 201811196483.1, which was developed and applied by shanghai nano crystal science and technology limited company at the same time, wherein one end of the water mist type gas absorption module of the present invention is connected with the gas inlet, the other end of the water mist type gas absorption module is connected with one end of the filtering module, the other end of the filtering module is connected with one end of the photoelectrocatalytic gas oxidation module, the other end of the photoelectrocatalytic gas oxidation module is connected with one end of the water curtain type gas absorption module, and the other end of the water curtain type gas absorption module is connected with the gas outlet. Compared with the prior art, the method has the advantages that the water absorption technology and the photoelectrocatalysis oxidation technology are combined, VOCs organic molecules are absorbed and dissolved by water, organic matters dissolved in the water are oxidized and decomposed into carbon dioxide and water through photoelectrocatalysis, and the treated water can be recycled, so that secondary pollution is avoided, the overall equipment and operation cost are saved, and the method is a high-efficiency and practical VOCs purification technology; however, not all organic volatile gases are dissolved in water, and at high concentration, the water curtain filtration and the photoelectrocatalytic decomposition only by the invention obviously cause the device of the invention to occupy a large space, and the practical application value is not high.
In summary, there are two problems in the treatment of volatile organic gases (VOCs): 1. the conventional adsorption method can bring subsequent large-scale waste filter element treatment work; 2. the existing equipment can not occupy small space and can be simultaneously suitable for treating different types of organic volatile gases (VOCs) with different concentrations; 3. dust treatment was performed simultaneously on the 2 nd issue.
Therefore, it is urgent to develop a treatment facility for organic volatile gases (VOCs) that can solve the above three problems.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide organic volatile gases (VOCs) treatment equipment and an operation method thereof, wherein organic volatile gases (VOCs) dissolved in water and dust particles are treated by a condensation module, a remaining organic volatile gases (VOCs) and accompanying moisture are filtered by an oleophobic and hydrophobic filtering module, and then the remaining organic volatile gases (VOCs) are further thoroughly treated by a reproducible adsorption module and a photocatalytic module in sequence, so that the treatment of different types of organic volatile gases (VOCs) and dust is completed, and the regeneration of the adsorption module is realized by a heating unit in the reproducible adsorption module and a reflux module at an output end; meanwhile, as the oleophobic and hydrophobic filtering membrane in the oleophobic and hydrophobic filtering module is compact in structure, the whole device is compact in structure and can adapt to the treatment of organic volatile gases (VOCs) with different concentrations, thereby solving the three problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses organic volatile gases (VOCs) treatment equipment which comprises a machine shell, a condensation module, a renewable adsorption module, a photocatalytic module and a control module, wherein the condensation module, the renewable adsorption module and the photocatalytic module are sequentially arranged in the machine shell according to a treatment sequence; the oleophobic and hydrophobic filtering module is arranged between the condensing module and the reproducible adsorption module according to the treatment sequence; the waste liquid backflow collection module is positioned at the bottom of the machine shell, and a first backflow collection channel arranged on the waste liquid backflow collection module is respectively connected with the bottoms of the condensation module and the oleophobic and hydrophobic filtering module and finally collected in a waste liquid collection box; a backflow port is arranged on the output port of the renewable adsorption module, the backflow port is connected with a backflow air inlet arranged on the side surface of the Laval jet type air inlet module through a backflow pipeline, and a normally open solenoid valve and a normally closed solenoid valve are arranged on the output port and the backflow port respectively; the Laval jet type air inlet module, the condensation module, the oleophobic and hydrophobic filtering module, the reproducible adsorption module and the photocatalytic module are connected through pipelines in a treatment sequence; the control module is respectively and electrically connected with the Laval jet type air inlet module condensation module, the oleophobic and hydrophobic filtering module, the reproducible adsorption module and the photocatalytic module.
The laval jet type air inlet module further comprises an air inlet fan, a first stage laval tubular channel and a second stage laval tubular channel, the air inlet fan is arranged at the front end of the first stage laval tubular channel, the middle rear section of the first stage laval tubular channel is arranged inside the front section of the second stage laval tubular channel, and the backflow air inlet is arranged on the side surface of the second stage laval tubular channel; the air inlet fan is electrically connected with the control module.
Furthermore, the condensation module comprises a condensation channel and a refrigerating device, two ends of the condensation channel are respectively connected with the Laval jet type air inlet module and the oleophobic and hydrophobic filtering module through pipelines, and the bottom of the condensation channel is connected with the first reflux collection channel; the refrigerating device is used for refrigerating the condensing channel; condensation channel import department is equipped with VOC gas concentration detection sensor one, the top is equipped with a plurality of atomising head, VOC gas concentration detection sensor one, refrigerating plant and atomising head all with control module electric connection.
Furthermore, the oleophobic and hydrophobic filtering module comprises a filtering bin, an oleophobic filtering membrane and a hydrophobic filtering membrane, wherein the oleophobic filtering membrane and the hydrophobic filtering membrane are sequentially arranged in the filtering bin according to a treatment sequence; the bottom of the filter bin is connected with the first backflow collecting channel, and a first air volume detecting sensor and a second air volume detecting sensor are respectively arranged at the inlet and the outlet; the first air quantity detection sensor and the second air quantity detection sensor are both electrically connected with the control module.
Preferably, oleophobic filtration membrane and hydrophobic filtration membrane all are the setting of falling triangle-shaped, just install the intercommunication under hydrophobic filtration membrane bottommost the backward flow of waste liquid backward flow collection module collects passageway two.
Furthermore, the renewable adsorption module also comprises a renewable adsorption cylinder and a renewable adsorption module bracket, wherein the renewable adsorption cylinder is positioned on the renewable adsorption module bracket and comprises a desorption regeneration heater and an adsorption material, and the desorption regeneration heater is positioned in the adsorption material and is used for heating the adsorption material to desorb after the adsorption material is saturated; renewable adsorption module support exit is equipped with VOC gas concentration detection sensor two, desorption regeneration heater, open solenoid valve, normally closed solenoid valve all with control module electric connection.
Preferably, the renewable adsorption modules are provided with at least two groups.
Furthermore, the photocatalytic module comprises a photocatalytic module support and photocatalytic plates, the photocatalytic plates are uniformly distributed in the photocatalytic module support at a certain angle, an ultraviolet lamp tube is arranged corresponding to each photocatalytic plate, and an exhaust fan is arranged at an exhaust port of the photocatalytic module support; the ultraviolet lamp tube and the exhaust fan are electrically connected with the control module.
Furthermore, the control module comprises a human-computer interaction display screen, a microcontroller, an audible and visual alarm, a storage unit and a control power supply, wherein the human-computer interaction display screen and the audible and visual alarm are respectively arranged on the side surface and the top of the shell; the microcontroller is used for controlling the control module; the storage unit is used for storing the uploaded data information; the control power supply is used for providing a power supply with proper and stable voltage for the control module.
An operation method of organic volatile gases (VOCs) treatment equipment is characterized in that:
starting the treatment equipment through the human-computer interaction display screen, setting the condensation temperature and the starting concentration of the condensation module and the heating desorption time of the reproducible adsorption module, and starting to work after setting; the specific operation method comprises the following steps:
after the equipment is started, the air inlet fan 201, the atomizing spray head 302, the ultraviolet lamp tube 703 and the exhaust fan 704 start to work simultaneously, and meanwhile, the first VOC gas concentration detection sensor 304, the second VOC gas concentration detection sensor 507, the first air volume detection sensor 404 and the second air volume detection sensor 405 enter a real-time monitoring state;
when a VOC gas concentration detection sensor in the condensation module detects that the VOC concentration exceeds a certain set value of default setting of the system, a refrigeration device of the condensation module is started; on the contrary, when the VOC gas concentration detection sensor detects that the VOC concentration is lower than the set value, the refrigerating device of the condensation module is closed, and the spraying head continuously sprays to realize spraying and filtering at normal temperature;
thirdly, when the air quantity difference between the first air quantity detection sensor and the second air quantity detection sensor in the oleophobic and hydrophobic filtering module reaches a certain set value set by default of the system, the man-machine interaction display screen displays that the oleophobic filtering membrane or the hydrophobic filtering membrane needs to be replaced, and meanwhile, the audible and visual alarm gives out audible and visual alarm;
when a VOC gas concentration detection sensor II in a part of the renewable adsorption modules detects that the VOC concentration reaches a certain set value set by default of a system, a normally open electromagnetic valve and a normally closed electromagnetic valve in the part of the renewable adsorption modules are powered on, a desorption regeneration heater in the part of the renewable adsorption modules starts to heat according to set time, and VOC desorbed from an adsorption material returns to a reflux air inlet of the Laval jet type air inlet module through a reflux pipeline in the heating desorption process, so that cyclic treatment is realized; after the heating of the desorption regeneration heater is completed, the normally open electromagnetic valve and the normally closed electromagnetic valve are powered off, and the part of the renewable adsorption modules enter normal work.
Compared with the prior art, the beneficial effects of the invention are as follows:
1. according to the invention, organic volatile gases (VOCs) and dust particles dissolved in water are treated by the condensation module, the remaining organic volatile gases (VOCs) and accompanying moisture are filtered by the oleophobic and hydrophobic filtering module, and then the remaining organic volatile gases (VOCs) are further thoroughly treated by the reproducible adsorption module and the photocatalytic module in sequence, so that the treatment of different types of organic volatile gases (VOCs) and dust is completed, and the regeneration of the adsorption module is realized by the heating unit in the reproducible adsorption module; meanwhile, as the oleophobic and hydrophobic filtering membrane in the oleophobic and hydrophobic filtering module is compact in structure, the whole device is compact in structure and can adapt to the treatment of organic volatile gases (VOCs) with different concentrations;
2. according to the invention, at least two groups of the renewable adsorption modules are arranged, so that the normal work of the device is not influenced in the desorption and reflux treatment process after one or more groups of the renewable adsorption modules are adsorbed and saturated;
3. according to the invention, the reflux treatment of the organic volatile gases (VOCs) desorbed by the reproducible adsorption module is realized by arranging the reflux module, the internal treatment of the organic volatile gases (VOCs) is completed, and the thoroughness of the device on the volatile gases (VOCs) of the treatment machine is further ensured;
4. according to the invention, the inverted triangle design of the oleophobic and hydrophobic filtering membrane in the oleophobic and hydrophobic filtering module realizes automatic separation after oil and water separation, so that the recycling of the oleophobic and hydrophobic filtering membrane can be effectively ensured, the accurate collection of oil and water can be completed, and the labor cost is saved; in addition, the organic volatile gases (VOCs) treated by the oleophobic and hydrophobic filtering module have the oil content and the water content basically eliminated, so that the service life of the renewable adsorption module is further prolonged, and the equipment maintenance cost is reduced;
5. the Laval jet type gas inlet module is designed into a two-stage Laval pipe shape, and the side surface of the second-stage Laval pipe-shaped channel is connected with the backflow pipeline, so that the effect similar to a steam jet vacuum pump is formed, the effect that the desorbed organic volatile gases (VOCs) in the backflow pipeline are sucked in the high-speed passing process of the organic volatile gases (VOCs) in the inlet channel of the device can be realized, the backflow pipeline is prevented from flowing reversely, the secondary acceleration after the two fluids are mixed can be realized, and the energy saving performance of the whole device is ensured;
6. according to the invention, the spray head is arranged at the upper end in the condensation module, so that organic volatile gases (VOCs) and dust particles dissolved in water are further effectively treated, and the purposes of low cost and high efficiency are realized.
Drawings
Fig. 1 and 2 are schematic views of the overall assembly structure of the invention.
Fig. 3 and 4 are schematic views of the assembly structure of the present invention with the casing removed.
Fig. 5 is a schematic structural diagram of a laval jet type air intake module of the present invention.
Fig. 6 is a schematic sectional structure view of a laval jet type intake module according to the present invention.
FIG. 7 is a schematic view of the assembly structure of the condensation module, the oleophobic and hydrophobic filtration module and the waste liquid reflux collection module.
Fig. 8 is a schematic view of a partial cross-sectional structure of a regenerable adsorbent module of the present invention.
Fig. 9 is a schematic view of the assembly structure of the regenerable adsorbent module and the return line device of the present invention.
FIG. 10 is a schematic view of the internal structure of the photocatalytic module according to the present invention.
FIG. 11 is a schematic view of the waste liquid reflux collection module according to the present invention.
Fig. 12 is a schematic diagram of the control module assembly of the present invention.
In the figure: 1-a machine shell; 2-laval jet type air intake module; 3-a condensation module; 4-oleophobic and hydrophobic filtering module; 5-a regenerable adsorption module; 6-a return line; 7-a photocatalytic module; 8-a waste liquid reflux collection module; 9-a control module; 201-an air inlet fan; 202-first stage laval tubular passage; 203-second stage laval tubular passage; 204-reflux inlet; 301-a condensation channel; 302-a spray head; 303-a refrigeration device; 304-a VOC gas concentration detection sensor one; 401-a filtration bin; 402-an oleophobic filtration membrane; 403-hydrophobic filtration membrane; 404-air quantity detecting sensor I; 405-air quantity detection sensor two; 501-regenerating an adsorption cylinder; 501 a-desorption regeneration heater; 501 b-an adsorption material; 502-an output port; 503-reflux port; 504-electromagnetic valve one; 505-electromagnetic valve two; 506-regenerable adsorbent module holder; 507-a VOC gas concentration detection sensor II; 701-a photocatalytic module support; 702-a photocatalytic sheet; 703-ultraviolet lamp tube; 704-an exhaust fan; 801-reflux collection channel one; 802-reflux collection channel two; 803-a waste liquid collection box; 901-a human-computer interaction display screen; 902-a microcontroller; 903-audible and visual alarm; 904-a storage unit; 905-control the power supply.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
as shown in fig. 1-5, 8, 9 and 11, an organic volatile gases (VOCs) treatment device comprises a casing 1, a condensation module 3, a renewable adsorption module 5, a photocatalytic module 7 and a control module 9, wherein the condensation module 3, the renewable adsorption module 5 and the photocatalytic module 7 are sequentially arranged in the casing 1 according to a treatment sequence, in addition, the device also comprises a laval jet type air inlet module 2, an oleophobic hydrophobic filtering module 4 and a waste liquid reflux collection module 8, and the laval jet type air inlet module 2 is arranged at the front side of the condensation module 3 according to the treatment sequence; the oleophobic and hydrophobic filtering module 4 is arranged between the condensing module 3 and the reproducible adsorption module 5 according to the treatment sequence; the waste liquid backflow collection module 8 is positioned at the bottom of the machine shell 1, a backflow collection channel I801 arranged on the waste liquid backflow collection module is respectively connected with the bottoms of the condensation module 3 and the oleophobic and hydrophobic filtering module 4, and finally is collected in a waste liquid collection box 803; a return port 503 is arranged on the output port 502 of the regenerative adsorption module 5, the return port 503 is connected with a return air inlet 204 arranged on the side surface of the laval jet type air inlet module 2 through a return pipeline 6, and a normally open solenoid valve 504 and a normally closed solenoid valve 505 are respectively arranged on the output port 502 and the return port 503; the Laval jet type air inlet module 2, the condensation module 3, the oleophobic and hydrophobic filtering module 4, the reproducible adsorption module 5 and the photocatalytic module 7 are connected through pipelines according to the treatment sequence; the control module 9 is respectively electrically connected with the Laval jet type air inlet module 2, the condensation module 3, the oleophobic and hydrophobic filtering module 4, the renewable adsorption module (5) and the photocatalytic module 7;
the Laval jet type air inlet module 2 not only ensures that the organic volatile gas after being heated and desorbed by the reproducible adsorption module 5 is successfully recovered, but also further increases the air inlet speed and realizes energy conservation; the arrangement of the oleophobic and hydrophobic filtering module 4 completes the filtering of oil and water, further realizes the filtering of organic volatile gas, further prolongs the service life of the renewable adsorption module, and reduces the maintenance cost of equipment; the waste liquid reflux collection module 8 effectively recovers the waste liquid generated in the treatment process, and embodies the environmental protection of the equipment.
Another implementation of the present invention is that, as shown in fig. 5 and 6, the laval jet type air intake module 2 further includes an air intake blower 201, a first stage laval tubular passage 202, and a second stage laval tubular passage 203, the air intake blower 201 is disposed at the front end of the first stage laval tubular passage 202, the rear section of the first stage laval tubular passage 202 is disposed inside the front section of the second stage laval tubular passage 203, and the return air inlet 204 is disposed at the side of the second stage laval tubular passage 203; therefore, the effect similar to a steam jet vacuum pump is formed, so that the desorbed organic volatile gases (VOCs) in the backflow pipeline can be sucked in the process of high-speed passing of the organic volatile gases (VOCs) in the inlet channel of the device, the backflow pipeline is prevented from flowing reversely, secondary acceleration after the two fluids are mixed can be realized, and the energy saving performance of the whole device is ensured; the air inlet fan 201 is electrically connected with the control module 9.
Another embodiment of the present invention is that, as shown in fig. 7, the condensation module 3 includes a condensation channel 301 and a refrigeration device 303, two ends of the condensation channel 301 are respectively connected with the laval jet type air intake module 2 and the oleophobic and hydrophobic filter module 4 through pipes, and the bottom is connected with the first reflux collection channel 801; the refrigerating device 303 is used for refrigerating the condensing channel 301; for real-time supervision VOC gas concentration, condensation channel 301 import department is equipped with VOC gas concentration detection sensor 304, and for improving treatment efficiency, the top is equipped with a plurality of atomising head 302, VOC gas concentration detection sensor 304, refrigerating plant 303 and atomising head 302 all with control module 9 electric connection.
Another embodiment of the present invention is that, as shown in fig. 7 and 11, the oleophobic and hydrophobic filter module 4 includes a filter cabin 401, an oleophobic filter membrane 402 and a hydrophobic filter membrane 403, and the oleophobic filter membrane 402 and the hydrophobic filter membrane 403 are sequentially disposed in the filter cabin 401 according to a treating order; in order to monitor the working state of the oleophobic and hydrophobic filter module 4 in real time, a first air volume detection sensor 404 and a second air volume detection sensor 405 are respectively arranged at the inlet and the outlet of the filter bin 401; the first air volume detection sensor 404 and the second air volume detection sensor 405 are both electrically connected with the control module 9;
in order to ensure that the oleophobic filtering membrane 402 and the hydrophobic filtering membrane 403 are efficiently filtered, the oleophobic filtering membrane and the hydrophobic filtering membrane are arranged in an inverted triangle, oil and water can be concentrated at the lowest end instead of being flatly laid on the membranes by the design, so that the filtering efficiency is effectively improved, and the recycling and collecting convenience of the oleophobic and hydrophobic filtering membranes are effectively ensured;
meanwhile, in order to ensure the compactness of the device, the oleophobic filtering membrane 402 and the hydrophobic filtering membrane 403 are arranged one above the other, the bottom of the filtering bin 401 is connected with the first backflow collecting channel 801 to realize the collection of the oil filtered by the oleophobic filtering membrane 402, and meanwhile, in order to ensure that the water filtered by the hydrophobic filtering membrane 403 does not drip onto the oleophobic filtering membrane 402, a second backflow collecting channel 802 communicated with the waste liquid backflow collecting module 8 is arranged right below the bottommost end of the hydrophobic filtering membrane 403, so that the water filtered by the hydrophobic filtering membrane 403 is effectively collected, and the normal work of the oleophobic filtering membrane 402 below the hydrophobic filtering membrane 403 is ensured.
Another embodiment of the present invention is that, as shown in fig. 8, the regenerable adsorption module 5 further includes a regenerable adsorption cylinder 501 and a regenerable adsorption module holder 506, where the regenerable adsorption cylinder 501 is located on the regenerable adsorption module holder 506, and in order to save space, the regenerable adsorption cylinders 501 are arranged in two groups, each group includes a desorption regeneration heater 501a and an adsorption material 501b, the desorption regeneration heater 501a is located inside the adsorption material 501b, and has a diameter equal to 1/4 of the whole regenerable adsorption cylinder 501, and is used for heating the adsorption material 501b for desorption after adsorption saturation; in order to monitor the concentration of the VOC gas at the exhaust port of the regenerable adsorption module 5 in real time, a second VOC gas concentration detection sensor 507 is arranged at the outlet of the regenerable adsorption module bracket 506, and the second VOC gas concentration detection sensor 507, the desorption regeneration heater 501a, the open solenoid valve 504 and the normally closed solenoid valve 505 are all electrically connected with the control module 9.
In order to avoid the situation that the adsorption material 501b of the adsorption module 5 that can regenerate cannot work normally when the desorption regeneration heater 501a is heating, four groups of adsorption modules 5 that can regenerate are provided.
Another embodiment of the present invention is that, as shown in fig. 10, the photocatalytic module 7 includes a photocatalytic module support 701 and photocatalytic plates 702, in order to ensure photocatalytic efficiency and an optimal illumination angle, two catalytic spaces are set in the photocatalytic module support 701, the photocatalytic plates 702 are divided into two groups, each group includes five catalytic spaces and is uniformly distributed in the photocatalytic module support 701 at an inclination angle of 30 °, and an ultraviolet lamp tube 703 is provided corresponding to each photocatalytic plate 702; meanwhile, in order to ensure the exhaust volume and the treatment efficiency, an exhaust fan 704 is arranged at the exhaust port of the photocatalytic module support 701; the ultraviolet lamp tube 703 and the exhaust fan 704 are electrically connected to the control module 9.
In another embodiment of the present invention, as shown in fig. 12, the control module 9 includes a human-computer interaction display 901, a microcontroller 902, an audible and visual alarm 903, a storage unit 904 and a control power supply 905, wherein for convenience of operation and observation, the human-computer interaction display 901 and the audible and visual alarm 903 are disposed on the side and the top of the casing 1; the microcontroller 902 is used for controlling the control module 9; the storage unit 904 is configured to store the uploaded data information; the control power supply 905 is used for providing a power supply with a proper and stable voltage for the control module 9.
In order to better show the operation method of the treatment equipment, the company places the equipment prototype of the invention in a paint spraying workshop of a company, firstly starts the treatment equipment through a man-machine interaction display screen 901, then sets parameters, sets the condensation temperature of a condensation module 3 to be-40, the starting concentration to be 4500PPM and the heating desorption time of a reproducible adsorption module 5 to be 5min, and starts to work after setting, wherein the specific operation method comprises the following steps:
after the equipment is started, the air inlet fan 201, the atomizing spray head 302, the ultraviolet lamp tube 703 and the exhaust fan 704 start to work simultaneously, and meanwhile, the first VOC gas concentration detection sensor 304, the second VOC gas concentration detection sensor 507, the first air volume detection sensor 404 and the second air volume detection sensor 405 enter a real-time monitoring state;
secondly, when a VOC gas concentration detection sensor I304 in the condensation module 3 detects that the VOC concentration exceeds 4500PPM set values set when the system is started, a refrigeration device 303 of the condensation module 3 is started; on the contrary, when the first VOC gas concentration detection sensor 304 detects that the VOC concentration is lower than the 4500PPM set value, the refrigeration device 303 of the condensation module 3 is turned off, and the spray head 302 continuously sprays to realize spray filtration at normal temperature;
thirdly, when the air quantity difference between the first air quantity detection sensor 404 and the second air quantity detection sensor 405 in the oleophobic and hydrophobic filter module 4 is detected to reach 40% of the default setting of the system, the man-machine interaction display screen 901 displays that the oleophobic filter membrane or the hydrophobic filter membrane needs to be replaced, and meanwhile, the audible and visual alarm 903 gives an audible and visual alarm;
when the VOC gas concentration detection sensor II 507 in one of the renewable adsorption modules 5 detects that the VOC concentration reaches a 200PPM set value set by default of the system, the normally open solenoid valve 504 and the normally closed solenoid valve 505 in the renewable adsorption module 5 are both powered on, at the moment, the desorption regeneration heater 501a in the renewable adsorption module 5 starts to heat according to set time, and in the heating desorption process, the VOC desorbed from the adsorption material 501b returns to the reflux air inlet 204 of the Laval jet type air inlet module 2 through the reflux pipeline 6, so that cyclic treatment is realized; after the heating of the desorption regeneration heater 501a is completed, the normally open solenoid valve 504 and the normally closed solenoid valve 505 are both de-energized, and the part of the renewable adsorption modules 5 enter into normal operation.

Claims (10)

1. The organic volatile gases (VOCs) treatment equipment comprises a machine shell (1), a condensation module (3), a renewable adsorption module (5), a photocatalytic module (7) and a control module (9), wherein the condensation module (3), the renewable adsorption module (5) and the photocatalytic module (7) are sequentially arranged in the machine shell (1) according to a treatment sequence, and the organic volatile gases treatment equipment is characterized by further comprising a Laval jet type air inlet module (2), an oleophobic hydrophobic filtering module (4) and a waste liquid backflow collecting module (8), wherein the Laval jet type air inlet module (2) is arranged on the front side of the condensation module (3) according to the treatment sequence; the oleophobic and hydrophobic filtering module (4) is arranged between the condensing module (3) and the reproducible adsorption module (5) according to the treatment sequence; the waste liquid backflow collection module (8) is positioned at the bottom of the machine shell (1), a backflow collection channel I (801) arranged on the waste liquid backflow collection module is respectively connected with the bottoms of the condensation module (3) and the oleophobic and hydrophobic filtering module (4), and finally is collected in a waste liquid collection box (803); a return port (503) is arranged on an output port (502) of the renewable adsorption module (5), the return port (503) is connected with a return air inlet (204) arranged on the side surface of the Laval jet type air inlet module (2) through a return pipeline (6), and a normally open electromagnetic valve (504) and a normally closed electromagnetic valve (505) are respectively arranged on the output port (502) and the return port (503); the Laval jet type air inlet module (2), the condensation module (3), the oleophobic and hydrophobic filtering module (4), the reproducible adsorption module (5) and the photocatalytic module (7) are connected through pipelines in a treatment sequence; the control module (9) is respectively electrically connected with the Laval jet type air inlet module (2), the condensation module (3), the oleophobic and hydrophobic filtering module (4), the reproducible adsorption module (5) and the photocatalytic module (7).
2. The organic volatile gases (VOCs) abatement equipment of claim 1, wherein said laval jet type gas inlet module (2) further comprises a gas inlet fan (201), a first stage laval tubular channel (202), and a second stage laval tubular channel (203), wherein said gas inlet fan (201) is disposed at the front end of said first stage laval tubular channel (202), the rear section of said first stage laval tubular channel (202) is disposed inside the front section of said second stage laval tubular channel (203), and said return gas inlet (204) is disposed at the side of said second stage laval tubular channel (203); the air inlet fan (201) is electrically connected with the control module (9).
3. The organic volatile gases (VOCs) abatement equipment of claim 1, wherein the condensation module (3) comprises a condensation channel (301) and a refrigeration device (303), both ends of the condensation channel (301) are respectively connected with the Laval jet type air inlet module (2) and the oleophobic and hydrophobic filtering module (4) through pipelines, and the bottom of the condensation channel is connected with the first backflow collecting channel (801); the refrigerating device (303) is used for refrigerating the condensing channel (301); condensing channel (301) import department is equipped with VOC gas concentration detection sensor (304), the top is equipped with a plurality of atomising head (302), VOC gas concentration detection sensor (304), refrigerating plant (303) and atomising head (302) all with control module (9) electric connection.
4. An organic volatile gas (VOCs) abatement apparatus according to claim 1, wherein said oleophobic and hydrophobic filtration module (4) comprises a filtration chamber (401), an oleophobic filtration membrane (402) and a hydrophobic filtration membrane (403), said oleophobic filtration membrane (402) and hydrophobic filtration membrane (403) being arranged in the filtration chamber (401) in sequence for abatement; the bottom of the filter bin (401) is connected with the first backflow collecting channel (801), and a first air volume detecting sensor (404) and a second air volume detecting sensor (405) are respectively arranged at an inlet and an outlet; and the first air volume detection sensor (404) and the second air volume detection sensor (405) are electrically connected with the control module (9).
5. A volatile organic gases (VOCs) abatement apparatus according to claim 4, wherein said oleophobic filtering membrane (402) and hydrophobic filtering membrane (403) are both arranged in an inverted triangle, and a second backflow collecting channel (802) communicated with said waste liquid backflow collecting module (8) is installed right below the lowest end of said hydrophobic filtering membrane (403).
6. The organic volatile gas (VOCs) abatement equipment of claim 1, wherein said regenerable adsorption module (5) further comprises a regenerable adsorption cartridge (501) and a regenerable adsorption module holder (506), said regenerable adsorption cartridge (501) is located on said regenerable adsorption module holder (506) and comprises a desorption regeneration heater (501 a) and an adsorption material (501 b), said desorption regeneration heater (501 a) is located inside said adsorption material (501 b) and is used for heating said adsorption material (501 b) for desorption after adsorption saturation; renewable adsorption module support (506) exit is equipped with VOC gas concentration detection sensor two (507), desorption regenerative heater (501 a), open solenoid valve (504), normally closed solenoid valve (505) all with control module (9) electric connection.
7. An organic volatile gas (VOCs) remediation apparatus according to claim 6, wherein there are at least two groups of regenerable adsorbent modules (5).
8. The organic volatile gases (VOCs) treatment equipment according to claim 1, wherein the photocatalytic module (7) comprises a photocatalytic module support (701) and photocatalytic plates (702), the photocatalytic plates (702) are a plurality of and are uniformly distributed in the photocatalytic module support (701) at a certain angle, an ultraviolet lamp tube (703) is arranged corresponding to each photocatalytic plate (702), and an exhaust fan (704) is arranged at an exhaust port of the photocatalytic module support (701); the ultraviolet lamp tube (703) and the exhaust fan (704) are electrically connected with the control module (9).
9. The organic volatile gases (VOCs) abatement equipment of any one of claims 1-8, wherein the control module (9) comprises a human-computer interaction display screen (901), a microcontroller (902), an audible and visual alarm (903), a storage unit (904) and a control power supply (905), wherein the human-computer interaction display screen (901) and the audible and visual alarm (903) are respectively arranged at the side and the top of the cabinet (1); the microcontroller (902) is used for controlling the control module (9); the storage unit (904) is used for storing the uploaded data information; the control power supply (905) is used for providing a power supply with proper and stable voltage for the control module (9).
10. An operation method of organic volatile gases (VOCs) treatment equipment is characterized in that:
the treatment equipment is started through the human-computer interaction display screen (901), the condensation temperature and the starting concentration of the condensation module (3) and the heating desorption time of the renewable adsorption module (5) are set, and the treatment equipment starts to work after being set; the specific operation method comprises the following steps:
after the equipment is started, the air inlet fan (201), the atomizing spray head (302), the ultraviolet lamp tube (703) and the air exhaust fan (704) start to work simultaneously, and meanwhile, a VOC gas concentration detection sensor I (304), a VOC gas concentration detection sensor II (507), an air volume detection sensor I (404) and an air volume detection sensor II (405) enter a real-time monitoring state;
when a VOC gas concentration detection sensor I (304) in the condensation module (3) detects that the VOC concentration exceeds a certain set value set during system startup, a refrigeration device (303) of the condensation module (3) is started; on the contrary, when the VOC gas concentration detection sensor I (304) detects that the VOC concentration is lower than the set value, the refrigerating device (303) of the condensation module (3) is closed, the spraying head (302) continuously sprays, and spraying filtration at normal temperature is realized;
thirdly, when a first air volume detection sensor (404) and a second air volume detection sensor (405) in the oleophobic and hydrophobic filtering module (4) detect that the air volume difference between the first air volume detection sensor and the second air volume detection sensor reaches a certain set value set by default of a system, a man-machine interaction display screen (901) displays that the oleophobic filtering membrane or the hydrophobic filtering membrane needs to be replaced, and meanwhile, an audible and visual alarm (903) gives an audible and visual alarm;
when a VOC gas concentration detection sensor II (507) in a part of the renewable adsorption modules (5) detects that the VOC concentration reaches a certain set value set by default by a system, a normally open electromagnetic valve (504) and a normally closed electromagnetic valve (505) in the part of the renewable adsorption modules (5) are powered on, at the moment, desorption regeneration heaters (501 a) in the part of the renewable adsorption modules (5) start to heat according to set time, and in the heating and desorption process, VOC desorbed from an adsorption material (501 b) returns to a backflow air inlet (204) of the Laval jet type air inlet module (2) through a backflow pipeline (6), so that cyclic treatment is realized; after the desorption regeneration heater (501 a) is heated, the normally open electromagnetic valve (504) and the normally closed electromagnetic valve (505) are powered off, and the part of the renewable adsorption modules (5) enter normal operation.
CN202110470503.5A 2021-04-28 2021-04-28 Organic volatile gas (VOCs) treatment equipment and operation method thereof Active CN113230880B (en)

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