CN207577115U - The organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes - Google Patents
The organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes Download PDFInfo
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Abstract
The utility model provides the organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes.The burner is connected with high-temperature oxydation room, the high temperature flue gas pipeline of high-temperature oxydation room is connected respectively with rotary kiln heat treatment system and air heat exchanger, the high temperature air outlet of air heat exchanger is connected with burner, the flue gas pipeline of air preheater is connected with the entrance of chilling tower, the outlet of chilling tower is connected with the entrance of bag filter, the outlet of bag filter is connected with the entrance of extracting tower, the outlet of extracting tower is connected with the air inlet of air-introduced machine two, and the outlet of air-introduced machine two is connected with chimney.The utility model can reduce the consumption of fuel, system carries out exhaustive oxidation degradation to organic pollution, reduce the discharge of pollutant, reduce secondary pollution risk, can stablize, continuously, efficiently carry out thermal desorption processing, suitable for different type, the repairing and treating of organic material contaminated soil/bed mud of concentration.
Description
Technical field
The utility model is related to the organic polluted soil dystopy thermal desorption repair systems that a kind of waste heat efficiently utilizes, and belonging to has
Machine contaminated soil heterotopic thermal desorption repair system technical field.
Background technology
At present, with the implementation of " moving back two into three, Tui Chengjin gardens ", domestic many carryover contamination places, especially chemical industry are dirty
Place is contaminated, it is found that there are serious organic pollutions for soil.If do not taken timely and effectively control measures, can to ambient atmosphere and
Biology is possible to deposit with rainwater there are health threat, and permeate the ground water, serious threat human health.Soil is organic
Object pollution problem has caused the extensive concern of people, and soil remediation is imperative.
The current organic contaminated sites in China are mainly organic agricultural chemicals insecticide, persistence organic pollutant and petroleum hydrocarbon etc.
Non- organo-chlorine pollutant.For organic pollution place, it is applied successfully at present there are many recovery technique.For example,
Room temperature desorption, curing/stabilizing technology, thermal desorption in situ, in situ chemical oxidation and biodegradation technique etc..For different pollutions
Object, different contaminated sites, need to take suitable technical solution and recovery technique.It is meanwhile efficient, thorough, cost savings type
Recovery technique scheme also can cause organic contamination place to reach reparation target in a short time, realize its recycle value.Cause
This, researches and develops a kind of practical " contaminated sites rapid treating technology and equipment ", has great application value and prospect.
Heat treatment technics is mostly dystopy processing, is often referred to pollution medium being transferred to specific processing unit or combustion chamber
Deng being then exposed under high temperature, so as to destroy or remove a kind of repair process of wherein pollutant.Showering technology
Main advantage is that process cycle is short, and processing procedure is visual, and the continuous mixing of pollution medium and homogenizing process are easily controllable.But
Pollutant distribution is uneven in contaminated soil domain, and pollutant often has higher boiling point, needs a large amount of thermal energy in processing procedure
Consumption, repair process can generate a large amount of high-temperature tail gas.For traditional rotary kiln heating system, soil treatment amount is 25m3/h
When, the thermal loss that high-temperature flue gas distributes is 30%~60%, is the major part of heat-energy losses in thermal desorption system.And high temperature
It is difficult also to lead to the problem of vent gas treatment while heat losses are brought for flue gas.Therefore, how by optimizing thermal desorption system
System, realizes the efficient utilization of waste heat, for reducing heat losses, reduces contaminated soil cost of disposal, has important engineering significance.
Chinese patent (204247684 U of CN) discloses a kind of contaminated soil thermal desorption system of the efficient reuse of waste heat, combustion
A part of direct cooling treatment of high-temperature flue gas that room generates is burnt, causes a large amount of thermal loss；And another portion that combustion chamber comes out
Enter rotary kiln after dividing high-temperature flue gas mixing fresh air so that the oxygen content in thermal desorption region increases, also to a certain extent
Increase the generation risk of the noxious materials such as thermal desorption Guo journey Zhong bioxin.Chinese patent (102218446 A of CN) discloses one
The system that UTILIZATION OF VESIDUAL HEAT IN is carried out during kind Polluted Soil thermal desorption, the device use two-stage combustion, and system energy consumption is higher, is manipulated so
This certainly will also increase；The mating Turbo-generator Set of cogeneration need, system complex, cost are higher.
Chinese patent (105080957 A of CN) discloses the contaminated soil thermal desorption repair system that a kind of waste heat recycles,
Using surface-type heat-exchange device, combustion air is helped to carry out at preheating room temperature the high-temperature tail gas generated in repair process
Reason since vent gas treatment process is using activated carbon adsorption, is not carried out the thorough degradation of pollutant, only realize pollutant by
Gas phase becomes hazardous waste after activated carbon adsorption saturation to the transfer process of solid phase, need to carry out after-treatment, cost of disposal compared with
It is high.Chinese patent (104741372 A of CN) discloses a kind of replaces activated carbon as tail gas adsorption agent and utilization by the use of charcoal
Charcoal mixes the novel thermal desorption repair system and method that thermal desorption heat supply is used for as combustion heat source, the invention with contaminated soil
Complete thermal desorption device is not provided for above-mentioned thermal desorption process.Moreover, the adsorption effect of charcoal Dui bioxin needs into one
Step is demonstrate,proved.
Chinese patent (CN 101530858A) discloses a kind of direct thermal desorption device of contaminated soil, wherein hot-air with
Contaminated soil contacts in the same direction, it is impossible to realize being sufficiently mixed for hot-air and contaminated soil, thermal desorption is less efficient.Chinese patent
(CN 101780467A) discloses a kind of indirect thermal desorption equipment of contaminated soil, and the patent core apparatus heating rotary kiln is by interior
Layer structure is formed with layer structure, and heating fuel system heats between endothecium structure and layer structure, contaminated soil and heat source
Heat exchange can not be come into full contact with, causes thermal desorption less efficient.
The shortcomings of more than dystopy thermal desorption system or device are low there are utilization efficiency of heat energy, and vent gas treatment design is unreasonable.
Utility model content
The purpose of this utility model is to solve the above-mentioned problems of the prior art, and then it is efficient to provide a kind of waste heat
The organic polluted soil dystopy thermal desorption repair system utilized.
The purpose of this utility model is achieved through the following technical solutions：
The organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes, including：Burner, high-temperature oxydation
Room, rotary kiln heat treatment system, air-introduced machine one, cyclone dust collectors, soil pretreatment system, feed system, air heat exchanger,
Chilling tower, bag filter, extracting tower, soil moistening and lowering temperature device, soil discharge system, normal temperature air entrance, high temperature air
Outlet, chimney, air blower and air-introduced machine two, the burner are connected with high-temperature oxydation room, the high-temperature flue gas of high-temperature oxydation room
Pipeline is connected respectively with rotary kiln heat treatment system and air heat exchanger, the air outlet of air blower and air heat exchanger it is normal
Warm air entrance is connected, and the high temperature air outlet of air heat exchanger is connected with burner, the flue gas pipeline of air preheater
Be connected with the entrance of chilling tower, the outlet of chilling tower is connected with the entrance of bag filter, the outlet of bag filter with
The entrance of extracting tower is connected, and the outlet of extracting tower is connected with the air inlet of air-introduced machine two, the outlet of air-introduced machine two and chimney
It is connected, the air inlet phase of the volatility/half volatile organic contaminant pipeline and air-introduced machine one of rotary kiln heat treatment system
Connection, the air outlet of air-introduced machine one are connected with the entrance of cyclone dust collectors, the air of the heating contaminated soil of cyclone dust collectors
Pipeline is connected with high-temperature oxydation room, the dust pipeline of cyclone dust collectors and the outlet of soil pretreatment system respectively with charging
The arrival end of system is connected, and the outlet of feed system is connected with the material inlet of rotary kiln heat treatment system, rotary kiln
The material outlet of heat treatment system is connected with the entrance of soil moistening and lowering temperature device, the outlet of soil moistening and lowering temperature device with
Soil discharge system is connected.
The beneficial effects of the utility model：
Tthe utility model system high temperature oxidizing chamber sets two outlets, is respectively connected to entering for rotary kiln thermal desorption device
The high-temperature flue gas that high-temperature oxydation room comes out is divided into two strands of air-flows by the entrance of mouth and air preheater.The utility model can subtract
The consumption of few fuel, system carry out exhaustive oxidation degradation to organic pollution, reduce the discharge of pollutant, reduce secondary pollution wind
Danger, can stablize, continuously, efficiently carry out thermal desorption processing, suitable for different type, various concentration organic pollution soil
The repairing and treating of earth/bed mud.
The flue-gas temperature entered in rotary kiln in Tthe utility model system is higher, while realizes removing and the soil of pollutant
The preheating and drying process of earth is equivalent in rotary kiln and exists simultaneously preheating and drying section and thermal desorption section two parts.The utility model
It is stable to the purification process of contaminated soil, uniform, it is not affected by environment, it can effectively increase the place of unit interval contaminated soil
Reason amount improves operational efficiency, realizes that stable, continuous, efficient thermal desorption is handled to organic polluted soil, applicable different pollutions
Type, concentration organic polluted soil improvement.
The air preheater of the utility model can efficiently use the heat in the high-temperature flue gas that high-temperature oxydation room comes out, and carry
The temperature of high combustion air reduces the consumption of fossil fuel；Meanwhile the operating load of chilling tower is reduced, reduce disappearing for water resource
Consumption.
The utility model realizes maximally utilizing for thermal desorption system waste heat, efficient and saving energy.With as follows
Some advantage：
1st, improve and overheavy firing, after the hot-air after air preheater enters in stove, accelerate fuel
Fire and combustion process ensure to stablize burning in stove, play a part of improvement, overheavy firing.
2nd, augmentation of heat transfer, since burning is improved and strengthened in stove, in addition the hot blast temperature entered in stove improves, in stove
Average temperature level is also improved, so as to strengthen radiant heat transfer in stove.
3rd, reduce stove internal loss, reduce exhaust gas temperature, improve the thermal efficiency.Due to flameholding in stove, radiant heat exchange
Strengthen, loss of the inadequacy burning for chemistry mechanics reason can be reduced.
Description of the drawings
Fig. 1 is the organic polluted soil dystopy thermal desorption repair system schematic diagram that a kind of waste heat efficiently utilizes.
Fig. 2 is the structure diagram of soil pretreatment system 6.
Fig. 3 is the structure diagram of soil moistening and lowering temperature device 12.
Reference numeral in figure, 1 is burner, and 2 be high-temperature oxydation room, and 3 be rotary kiln heat treatment system, and 4 be air inducing
Machine one, 5 be cyclone dust collectors, and 6 be soil pretreatment system, and 7 be feed system, and 8 be air heat exchanger, and 9 be chilling tower, and 10 are
Bag filter, 11 be extracting tower, and 12 be soil moistening and lowering temperature device, and 13 be soil discharge system, and 14 be normal temperature air entrance,
15 export for high temperature air, and 16 be chimney, and 17 be air blower, and 18 be air-introduced machine two, and 61 be vibrating screen, and 62 be crusher, and 63 are
Material mixing equipment, 64 be Magnet Separater, and 65 be belted electronic balance, and 66 devices in order to control, 121 be scrapper conveyor, and 122 be outer
Cover, 123 be spray head, and 124 be cooling water pipe.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing：The present embodiment is with the utility model skill
Implemented under premised on art scheme, give detailed embodiment, but the scope of protection of the utility model be not limited to it is following
Embodiment.
As shown in Figure 1, the organic polluted soil dystopy thermal desorption that a kind of waste heat involved by the present embodiment efficiently utilizes is repaiied
Complex system, including：Burner 1, high-temperature oxydation room 2, rotary kiln heat treatment system 3, air-introduced machine 1, cyclone dust collectors 5, soil
Earth pretreatment system 6, feed system 7, air heat exchanger 8, chilling tower 9, bag filter 10, extracting tower 11, soil humidification drop
Warm device 12, soil discharge system 13, normal temperature air entrance 14, high temperature air outlet 15, chimney 16, air blower 17 and air inducing
Machine 2 18, the burner 1 are connected with high-temperature oxydation room 2, and the high temperature flue gas pipeline of high-temperature oxydation room 2 adds respectively with rotary kiln
Heat treatment system 3 is connected with air heat exchanger 8, the air outlet of air blower 17 and the normal temperature air entrance 14 of air heat exchanger 8
It is connected, the high temperature air outlet 15 of air heat exchanger 8 is connected with burner 1, the flue gas pipeline and chilling of air preheater 8
The entrance of tower 9 is connected, and the outlet of chilling tower 9 is connected with the entrance of bag filter 10, the outlet of bag filter 10 with
The entrance of extracting tower 11 is connected, and the outlet of extracting tower 11 is connected with the air inlet of air-introduced machine 2 18, and air-introduced machine 2 18 goes out
Mouth is connected with chimney 16, volatility/half volatile organic contaminant pipeline and the air-introduced machine one of rotary kiln heat treatment system 3
4 air inlet is connected, and the air outlet of air-introduced machine 1 is connected with the entrance of cyclone separator 5, the heating of cyclone dust collectors 5
The air pipe line of contaminated soil is connected with high-temperature oxydation room 2, the dust pipeline of cyclone dust collectors 5 and soil pretreatment system
Arrival end of 6 outlet respectively with feed system 7 is connected, the outlet of feed system 7 and the object of rotary kiln heat treatment system 3
Material entrance is connected, and the material outlet of rotary kiln heat treatment system 3 is connected with the entrance of soil moistening and lowering temperature device 12, soil
The outlet of earth moistening and lowering temperature device 12 is connected with soil discharge system 13.
The air heat exchanger 8 is coiled air heat exchanger.
As shown in Fig. 2, the soil pretreatment system 6 is by vibrating screen 61, crusher 62, material mixing equipment 63, magnetic separation
Separator 64, belted electronic balance 65 and control device 66 are formed, the material mixing equipment 63, Magnet Separater 64 and control
Device 66 processed is connected respectively with belted electronic balance 65, the discharge port of vibrating screen 61 respectively with the feed inlet and material of crusher 62
The feed inlet of mixing apparatus 63 is connected, and the discharge port of crusher 62 is connected with the feed inlet of material mixing equipment 63.
After being sorted by vibrating screen 61, soil of the grain size more than 50mm, which enters in crusher 62, to be crushed, and grain size is less than 50
The soil of mm is then directly entered material mixing equipment 63.
As shown in figure 3, the soil moistening and lowering temperature device 12 is equipped with scrapper conveyor 121, scrapper conveyor 121 carries outer cover 122, outside
Cover 122 is internally provided with spray head 123, and spray head 123 is connected with cooling water pipe 124.
Operation principle
The fossil fuels such as natural gas or liquefied petroleum gas surrounding air it is combustion-supporting under, by burner 1, in high temperature oxygen
Change vigorous combustion in room 2 and release heat.After the outlet smoke temperature of high-temperature oxydation room 2 reaches certain temperature, from high-temperature oxydation room 2
In out a high-temperature flue gas part flow in rotary kiln heat treatment apparatus 3.At this point, organic material contaminated soil is located in advance in soil
In reason system 6, by broken, screening, moisture content is adjusted and except iron etc. pre-processes link, by soil feed system 7, into returning
In rotary kiln heat treatment apparatus 3.High-temperature flue gas and contaminated soil in rotary kiln heat treatment apparatus 3 reverse flow, fully connect
It touches, organic pollution is gradually desorbed from contaminated soil and comes out.By air-introduced machine 1 formed negative pressure, organic pollution with
Flue gas enters cyclone dust collectors 5, and most of particulate matter is separated, and then mixes feeding charging system again with contaminated soil
In system 7, process is further processed.After cyclone dust collectors 5, the smoke backflow containing organic pollution to high temperature oxygen
Change and high-temp combustion degradation is carried out in room 2, realize the thorough removing of pollutant.
At the same time, another strand of high-temperature flue gas come out from high-temperature oxydation room 2 enters in air heat exchanger 8, fresh air
Under the action of air blower 17, by normal temperature air entrance 14, into tubular air heat exchanger 8.In air heat exchanger 8,
Fresh air is in Bottomhole pressure, and high-temperature flue gas flows outside pipe, and by heat transfer process, the portion of energy in high-temperature flue gas is transmitted
To fresh air so that air themperature increases, and enters in burner 1 by high temperature air outlet 15, auxiliary as combustion air
Help combustion of fossil fuel.Flue gas after heat exchange is entered in chilling tower 9, is acted on by the rapid cooling of chilling tower 9, fast
Speed is cooled to 200 DEG C hereinafter, avoid the generation temperature range of bioxin, effectively prevent the generation of bioxin.Flue gas after chilling
Particulate matter is isolated into bag filter 10.After flue gas leaves bag filter 10, into extracting tower 11, spray into lye with
Neutralize the acidic materials in flue gas.It is discharged into air by chimney 16 by the flue gas of extracting tower 11.Flue gas is housed on chimney 16
Real time on-line monitoring device can be continued to monitor through dirts such as carbon monoxide, sulfur dioxide, the nitrogen oxides in the flue gas of monitoring point
The concentration of substance is contaminated, assist operators monitor exhaust emissions concentration in real time.When necessary, it can be installed before bag filter 10
Charcoal canister sprays into activated carbon into pipeline, realizes activated carbon and bag-type dust combination removing dioxin in flue gas, it is ensured that tail gas
Middle harmful constituent and dust etc. reach discharge standard.It is discharged by the tail gas handled above eventually by chimney 16.
At the same time, through 3 thermal desorption of rotary kiln heat treatment apparatus, treated that high temperature soil passes through moistening and lowering temperature device
It is cooled off after 12 processing, becomes clean soil after soil cooling and discharged from discharge system 13, gone out by the way of high-temperature closed
Material, is transported to workshop to be checked, carries out examination to be checked.
The preferable specific embodiment of the above, only the utility model, these specific embodiments are all based on this
Different realization methods under utility model general idea, and the scope of protection of the utility model is not limited thereto, it is any ripe
It knows in the technical scope that those skilled in the art disclose in the utility model, the change or replacement that can be readily occurred in, all
It should cover and be within the protection scope of the utility model.Therefore, the scope of protection of the utility model should be with claims
Subject to protection domain.
Claims (4)
1. the organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes, including：Burner (1), high temperature oxygen
Change room (2), rotary kiln heat treatment system (3), air-introduced machine one (4), cyclone dust collectors (5), soil pretreatment system (6), into
Material system (7), air heat exchanger (8), chilling tower (9), bag filter (10), extracting tower (11), soil moistening and lowering temperature device
(12), soil discharge system (13), normal temperature air entrance (14), high temperature air outlet (15), chimney (16), air blower (17) and
Air-introduced machine two (18), which is characterized in that the burner (1) is connected with high-temperature oxydation room (2), the height of high-temperature oxydation room (2)
Warm flue gas pipeline is connected respectively with rotary kiln heat treatment system (3) and air heat exchanger (8), the air outlet of air blower (17)
It is connected with the normal temperature air entrance (14) of air heat exchanger (8), high temperature air outlet (15) and the burning of air heat exchanger (8)
Device (1) is connected, and the flue gas pipeline of air preheater (8) is connected with the entrance of chilling tower (9), the outlet of chilling tower (9) with
The entrance of bag filter (10) is connected, and the outlet of bag filter (10) is connected with the entrance of extracting tower (11), depickling
The outlet of tower (11) is connected with the air inlet of air-introduced machine two (18), and the outlet of air-introduced machine two (18) is connected with chimney (16),
The volatility of rotary kiln heat treatment system (3), half volatile organic contaminant pipeline are connected with the air inlet of air-introduced machine one (4)
Logical, the air outlet of air-introduced machine one (4) is connected with the entrance of cyclone dust collectors (5), the heating contaminated soil of cyclone dust collectors (5)
Air pipe line be connected with high-temperature oxydation room (2), the dust pipeline of cyclone dust collectors (5) and soil pretreatment system (6)
Arrival end of the outlet respectively with feed system (7) be connected, outlet and the rotary kiln heat treatment system of feed system (7)
(3) material inlet is connected, the material outlet of rotary kiln heat treatment system (3) and entering for soil moistening and lowering temperature device (12)
Mouth is connected, and the outlet of soil moistening and lowering temperature device (12) is connected with soil discharge system (13).
2. the organic polluted soil dystopy thermal desorption repair system that waste heat according to claim 1 efficiently utilizes, feature
It is, the air heat exchanger (8) is coiled air heat exchanger.
3. the organic polluted soil dystopy thermal desorption repair system that waste heat according to claim 2 efficiently utilizes, feature
It is, the soil pretreatment system (6) is by vibrating screen (61), crusher (62), material mixing equipment (63), Magnet Separater
(64), belted electronic balance (65) and control device (66) are formed, the material mixing equipment (63), Magnet Separater (64) with
And control device (66) is connected respectively with belted electronic balance (65), the discharge port of vibrating screen (61) respectively with crusher (62)
Feed inlet is connected with the feed inlet of material mixing equipment (63), the discharge port of crusher (62) and material mixing equipment (63) into
Material mouth is connected.
4. the organic polluted soil dystopy thermal desorption repair system that waste heat according to claim 3 efficiently utilizes, feature
It is, the soil moistening and lowering temperature device (12) is equipped with scrapper conveyor (121), and scrapper conveyor (121) is with outer cover (122), outer cover
(122) spray head (123) is internally provided with, spray head (123) is connected with cooling water pipe (124).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721586073.9U CN207577115U (en) | 2017-11-23 | 2017-11-23 | The organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721586073.9U CN207577115U (en) | 2017-11-23 | 2017-11-23 | The organic polluted soil dystopy thermal desorption repair system that a kind of waste heat efficiently utilizes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971330A (en) * | 2017-11-23 | 2018-05-01 | 北京建工环境修复股份有限公司 | The organic polluted soil dystopy thermal desorption repair system and method that waste heat efficiently utilizes |
| CN112387766A (en) * | 2020-10-27 | 2021-02-23 | 国家电投集团远达环保工程有限公司重庆科技分公司 | System and method for treating polluted soil by using waste heat of boiler |
| CN117003468A (en) * | 2023-09-28 | 2023-11-07 | 珙县华洁危险废物治理有限责任公司成都分公司 | Shale gas drilling oil sludge dry residue treatment device and system |
-
2017
- 2017-11-23 CN CN201721586073.9U patent/CN207577115U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971330A (en) * | 2017-11-23 | 2018-05-01 | 北京建工环境修复股份有限公司 | The organic polluted soil dystopy thermal desorption repair system and method that waste heat efficiently utilizes |
| CN112387766A (en) * | 2020-10-27 | 2021-02-23 | 国家电投集团远达环保工程有限公司重庆科技分公司 | System and method for treating polluted soil by using waste heat of boiler |
| CN117003468A (en) * | 2023-09-28 | 2023-11-07 | 珙县华洁危险废物治理有限责任公司成都分公司 | Shale gas drilling oil sludge dry residue treatment device and system |
| CN117003468B (en) * | 2023-09-28 | 2023-12-05 | 珙县华洁危险废物治理有限责任公司成都分公司 | Shale gas drilling oil sludge dry residue treatment device and system |
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