CN217895691U - Annealing stove air current arrangement system and annealing stove oil smoke recovery processing system - Google Patents
Annealing stove air current arrangement system and annealing stove oil smoke recovery processing system Download PDFInfo
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- CN217895691U CN217895691U CN202221184205.6U CN202221184205U CN217895691U CN 217895691 U CN217895691 U CN 217895691U CN 202221184205 U CN202221184205 U CN 202221184205U CN 217895691 U CN217895691 U CN 217895691U
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Abstract
The utility model belongs to the technical field of annealing stove. The annealing furnace airflow arrangement system is characterized in that all burners in a heat radiation pipe in the annealing furnace are communicated with a natural gas conveying pipeline through a first branch pipeline; a second branch pipeline communicated with the waste gas pipeline is also arranged on the heat radiation pipe, and a first induced draft fan is arranged on the waste gas pipeline; the air outlet end of the first air blower is communicated with the burners through a third branch pipeline, and a first air distribution pipeline is arranged in the annealing furnace; a second gas distribution pipeline is arranged in the annealing furnace, and the nitrogen conveying pipeline is communicated with the second gas distribution pipeline; the multiple groups of circulating fans are arranged on the annealing furnace and are used for circulating the gas in the annealing furnace; the air inlet of the second induced draft fan is communicated with the inner cavity of the annealing furnace. Also discloses an oil smoke recovery processing system of the annealing furnace. This application structural design is reasonable, can realize effectively retrieving and handling the rolling oil in the annealing process, avoids product surface to form the oil stain, improves the quality of product.
Description
Technical Field
The utility model belongs to the technical field of annealing stove, concretely relates to annealing stove air current arrangement system and annealing stove oil smoke recovery processing system.
Background
In the aluminum processing industry, products need to be annealed, the surfaces of the products contain rolling oil in the rolling process, and before annealing is started, the rolling oil on the surfaces of the products needs to be dried, so that the rolling oil on the surfaces of the products is reduced, and the surfaces of the products are ensured not to have oil spots, yellow spots and the like after the annealing process.
The existing gas annealing furnace adopts a heat radiation pipe for heating, and a circulating fan ensures the uniform temperature in the furnace. When the annealing is started, drying at low temperature is adopted to volatilize the rolling oil on the surface of the product, simultaneously blowing air into the furnace by the air blower to accelerate the volatilization of the rolling oil on the surface of the product, discharging the waste gas containing the rolling oil out of the furnace by the induced draft fan, after the rolling oil on the surface of the product is completely volatilized, reducing the pressure in the furnace and reducing the oxygen content to a certain value, closing the air blower and the induced draft fan, filling nitrogen into the furnace, starting to heat and anneal.
Disclosure of Invention
The utility model aims at the problem that the aforesaid exists with not enough, provide an annealing stove air current arrangement system and annealing stove oil smoke recovery processing system, its structural design is reasonable, can realize effectively retrieving and handling the rolling oil in the annealing process, avoid the product surface to form the oil stain, improve the quality of product.
In order to realize the purpose, the adopted technical scheme is as follows:
an annealing furnace draft arrangement system comprising:
the burner nozzles in the heat radiation pipe in the annealing furnace are communicated with the natural gas conveying pipeline through a first branch pipeline;
the heat radiation pipe is also provided with a second branch pipeline communicated with the waste gas pipeline, and the waste gas pipeline is provided with a first induced draft fan;
the air outlet end of the first air blower is communicated with the burners through third branch pipelines, and the air inlet end of the first air blower is communicated with air outside the furnace;
the air inlet end of the second air blower is communicated with air outside the annealing furnace, a first air distribution pipeline is arranged in the annealing furnace, and the air outlet end of the second air blower is communicated with the first air distribution pipeline;
the annealing furnace is provided with a first gas distribution pipeline, and the annealing furnace is internally provided with a nitrogen gas conveying pipeline which is communicated with the first gas distribution pipeline;
the circulating fans are distributed on the annealing furnace and are used for circulating the gas in the annealing furnace; and
and the air inlet of the second induced draft fan is communicated with the inner cavity of the annealing furnace.
According to the utility model discloses annealing stove air current arrangement system, preferably, first gas distribution pipeline lays in the upper portion of annealing stove.
According to the utility model discloses annealing stove air current arrangement system, preferably, the second gas distribution pipeline is two sets of the upper portion and the lower part equipartition of annealing stove are equipped with second gas distribution pipeline.
According to the utility model discloses annealing stove air current arrangement system, preferably, be located the second gas distribution pipeline on annealing stove upper portion with first gas distribution pipeline is same group's pipeline all be provided with the control valve on the air-out end of second air-blower and the nitrogen gas pipeline.
An annealing stove oil smoke recovery processing system for the recovery of the oil smoke in the annealing stove includes:
the annealing furnace airflow arrangement system is arranged on the annealing furnace;
the cooler is provided with an oil smoke air inlet and an oil smoke air outlet, the oil smoke air inlet is communicated with the air outlet of the second draught fan, the bottom of the cooler is connected with a buffer oil tank through an oil outlet pipe, a heat exchange coil is distributed in the cooler, and a heat exchange medium is communicated in the heat exchange coil; and
and the oil fume outlet of the cooler is connected with the oil fume treatment equipment.
According to the utility model discloses annealing stove air current arrangement system, preferably, oil smoke treatment facility is full oily processing system, or active carbon adsorption device.
According to the utility model discloses annealing stove air current arrangement system, preferably, the cooler includes the cooling casing crisscross the multichannel baffle of having arranged in the cooling casing, heat exchange coil lays in the cooling casing, buffer tank is connected with the rolling mill sump oil storehouse.
According to the utility model discloses annealing stove air current arrangement system, preferably, the annealing stove is a plurality of, at each annealing stove upper portion all is provided with second draught fan and control valve, each the air-out end of second draught fan all with the oil smoke air intake intercommunication of cooler.
By adopting the technical scheme, the beneficial effects are as follows:
this application structural design is reasonable, can realize effectively retrieving and handling the rolling oil in the annealing process, avoids product surface to form the oil stain, improves the quality of product. This application can carry out cloth wind and convulsions in the different stages of annealing through arranging of air current, realizes the abundant recovery to the rolling oil on product surface, reduces the emission and the processing degree of difficulty of oil smoke in the annealing process. According to the annealing furnace, the first air blower is arranged to supplement air into the heat radiation tube, so that the natural gas is fully combusted, the combustion efficiency and the combustion effect are improved, and the second air blower can blow air into the annealing furnace, so that the volatilization of oil stains on the surface of a product is accelerated in the initial stage; the utility model provides a first draught fan can take out the waste gas after the burning in the heat radiation pipe, and the second draught fan can be to the extraction of stove oil mist gas to subsequent processing technology's operation is convenient for. The application of the cooler can cool oil mist gas, so that oil mist is condensed and recycled, and meanwhile, the oil mist gas can be further absorbed and processed through the oil fume processing equipment, so that the emission standard is reached, and the purification and absorption of oil mist components in the gas are realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
FIG. 1 is a schematic structural view of an annealing furnace airflow arrangement system according to an embodiment of the present invention.
FIG. 2 is a schematic structural view of an oil smoke recycling system of an annealing furnace according to an embodiment of the present invention.
Number in the figure:
100 is a natural gas conveying pipeline, 101 is a first branch pipeline, and 102 is a burner;
200 is an exhaust gas pipeline, 201 is a second branch pipeline, and 202 is a first induced draft fan;
300 is a first air blower, 301 is a third branch pipeline, 302 is a second air blower, 303 is a first air distribution pipeline, and 304 is a circulating fan;
400 is a nitrogen conveying pipeline;
500 is a second induced draft fan, 501 is a control valve;
610 is a cooler, 611 is a cooling shell, 612 is a baffle, 613 is a heat exchange coil, 614 is an oil smoke inlet, 615 is an oil smoke outlet, 620 is oil smoke treatment equipment, 630 is a buffer oil tank, 640 is a mill dirty oil reservoir;
700 is an annealing furnace.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In the description of the present invention, it should be understood that the expressions "first" and "second" are used to describe various elements of the present invention, and do not represent limitations on any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., to encompass both direct and indirect positional relationships.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
It is noted that terms indicating orientation or positional relationship, such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience in describing the present invention, and not that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.
Referring to fig. 1 and 2, the application discloses an annealing furnace airflow arrangement system, which comprises a natural gas conveying pipeline 100, an exhaust gas pipeline 200, a first blower 300, a second blower 302, a nitrogen conveying pipeline 400, a circulating fan 304 and a second induced draft fan 500.
Combustion section of heat radiation tube: each burner 102 in the heat radiation pipe in the annealing furnace 700 is communicated with the natural gas conveying pipeline 100 through a first branch pipeline 101; a second branch pipeline 201 communicated with the waste gas pipeline 200 is further arranged on the heat radiation pipe, and a first induced draft fan 202 is arranged on the waste gas pipeline 200; the air outlet end of the first air blower 300 is communicated with each burner 102 through a third branch pipeline 301, and the air inlet end of the first air blower 300 is communicated with air outside the furnace; in the working process, the natural gas conveying pipeline conveys natural gas to the burner, the first air blower fills outdoor air into the burner according to a certain flow rate, and at the moment, the natural gas is fully combusted under the combustion supporting effect of the blown oxygen, so that radiant heat is formed in the annealing furnace and is heated. According to different stages, the temperature of the heat radiation pipe is correspondingly controlled, the volatilization of the rolling oil on the surface of the product is mainly performed in the initial stage, so that low-temperature combustion is performed, the volatilization of the rolling oil is facilitated, the subsequent treatment is convenient, the higher temperature is needed in the later stage to achieve the annealing effect, the flow of natural gas and air is correspondingly increased, the temperature of the heat radiation pipe is provided, and the annealing process of the product is realized.
The air distribution part in the furnace: the air inlet end of the second blower 302 is communicated with air outside the annealing furnace, a first air distribution pipeline 303 is arranged in the annealing furnace, and the air outlet end of the second blower 302 is communicated with the first air distribution pipeline 303; can carry air to the annealing stove through the second air-blower, its main function is when carrying out the volatilization of product surface rolling oil at the initial stage, through sweeping the product surface, improves the volatilization efficiency of rolling oil to the gaseous quick volatilization of oil mist. Further, a second gas distribution pipeline is arranged in the annealing furnace, the nitrogen conveying pipeline 400 is communicated with the second gas distribution pipeline, the second gas distribution pipeline is mainly used for distributing nitrogen, air in the annealing furnace is replaced by the nitrogen, and after the rolling oil is volatilized, the product is protected in the later annealing stage.
Due to the arrangement of the heat radiation pipes, the temperature of gas in the annealing furnace has certain difference, so that a plurality of groups of circulating fans 304 are arranged on the annealing furnace, the circulating fans 304 are used for circulating the gas in the annealing furnace, the balance of the gas in the annealing furnace can be quickly realized, and the gas uniformity is ensured.
The extraction part of the oil fume gas: according to the annealing furnace, the second induced draft fan is arranged, the air inlet of the second induced draft fan 500 is communicated with the inner cavity of the annealing furnace, and the air outlet of the second induced draft fan is connected with a subsequent treatment process.
Since the first gas distribution pipeline and the second gas distribution pipeline have basically the same function, the first gas distribution pipeline 303 is arranged at the upper part of the annealing furnace. The two groups of second gas distribution pipelines are uniformly distributed at the upper part and the lower part of the annealing furnace. Therefore, the second gas distribution pipeline positioned at the upper part of the annealing furnace and the first gas distribution pipeline can be set to be the same group of pipelines, and the air outlet end of the second air blower and the nitrogen conveying pipeline are both provided with control valves. When the second air blower needs to work, the control valve on the nitrogen conveying pipeline is closed, and the control valve on the second air blower is opened; when the nitrogen is required to be conveyed to replace the gas in the furnace, the control valve on the nitrogen conveying pipeline is opened, and the control valve on the second air blower is closed.
The application also discloses an annealing furnace oil smoke recovery processing system, which is used for recovering oil smoke in the annealing furnace, and comprises the annealing furnace airflow arrangement system, a cooler 610 and an oil smoke processing device 620, wherein the cooler 610 is provided with an oil smoke air inlet 614 and an oil smoke air outlet 615, the oil smoke air inlet 614 is communicated with the air outlet of the second draught fan 500, the bottom of the cooler 610 is connected with a buffer oil tank 630 through an oil outlet pipe, a heat exchange coil 613 is distributed in the cooler 610, and a heat exchange medium is communicated in the heat exchange coil 613; the oil smoke outlet 615 of the cooler 610 is connected with the oil smoke processing device 620.
The lampblack treatment equipment 620 in this embodiment is a whole oil treatment system or an activated carbon adsorption device. The whole oil treatment system is original equipment in a plant area, and the treated oil fume gas is connected into the whole oil treatment system for final treatment, so that the integration and systematization of the equipment are realized. The active carbon adsorption device absorbs oil mist components in the oil fume gas through the active carbon, so that the treatment system can complete the treatment process of the treatment system, the flexibility is higher, and the retreatment by other equipment or systems is not needed.
The cooler in this embodiment includes a cooling housing 611, a plurality of baffles 612 are staggered in the cooling housing 611, the heat exchange coil 613 is disposed in the cooling housing 611, and the buffer oil tank 630 is connected to the mill dirty oil reservoir 640.
The treatment system of this application can supply a plurality of annealing stoves to use, all is provided with second draught fan 500 and control valve 501 on each annealing stove upper portion when connecting, and the air-out end of each second draught fan 500 all communicates with the oil smoke air intake 614 of cooler 610.
When the annealing process treatment is carried out, the gas annealing furnace is heated by adopting a radiant tube, and combustion waste gas is discharged by a first induced draft fan. In fig. 2, the lehr is shown from the top, with the arrangement of the lines relative to the lehr. In the figure: S1-S16 are burners, and circulation is a circulating fan for keeping the temperature in the furnace uniform; one of the drums is a first air blower which provides combustion air for the combustion of the burner; the other 'drum' is used for blowing gas in the furnace and is used for blowing rolling oil on the surface of the aluminum product; a2 is a second induced draft fan for leading out the waste gas containing the rolling oil in the furnace.
When the rolling oil recovery device works, after an aluminum product is placed into a furnace body, a burner is burnt at low temperature to volatilize rolling oil on the surface of the aluminum product, a second air blower blows air into the furnace to blow the surface of the aluminum product, the volatilization of the rolling oil is accelerated, oil smoke gas is led out through a second draught fan and then enters a cooler to recover the rolling oil, and waste gas at an oil smoke outlet enters a full oil recovery system through a rolling mill gas collecting hood or is directly absorbed through active carbon after the temperature is controlled to be below 50 ℃.
And after the rolling oil on the surface of the aluminum product is volatilized, turning off the second air blower, turning off the second induced draft fan when the pressure in the furnace is reduced and the oxygen content is lower, introducing nitrogen into the furnace, replacing the air in the furnace, and protecting the aluminum product.
And adjusting the flow of the natural gas and the first air blower to enable the temperature in the furnace to reach the temperature required by annealing, and ensuring the temperature in the furnace to be uniform by the circulating fan to anneal.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated that the present invention is illustrative only, and is not intended to limit the scope, applicability or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.
Claims (8)
1. An annealing furnace gas flow arrangement system, comprising:
the burner nozzles in the heat radiation pipe in the annealing furnace are communicated with the natural gas conveying pipeline through a first branch pipeline;
the heat radiation pipe is also provided with a second branch pipeline communicated with the waste gas pipeline, and the waste gas pipeline is provided with a first induced draft fan;
the air outlet end of the first air blower is communicated with the burners through third branch pipelines, and the air inlet end of the first air blower is communicated with air outside the furnace;
the air inlet end of the second air blower is communicated with air outside the annealing furnace, a first air distribution pipeline is arranged in the annealing furnace, and the air outlet end of the second air blower is communicated with the first air distribution pipeline;
the annealing furnace is provided with a first gas distribution pipeline, and the annealing furnace is internally provided with a nitrogen gas conveying pipeline which is communicated with the first gas distribution pipeline;
the circulating fans are distributed on the annealing furnace and are used for circulating the gas in the annealing furnace; and
and the air inlet of the second induced draft fan is communicated with the inner cavity of the annealing furnace.
2. The lehr gas flow arrangement system of claim 1 wherein the first gas distribution duct is disposed at an upper portion of the lehr.
3. The annealing furnace airflow arrangement system according to claim 2, wherein the second gas distribution pipes are divided into two groups, and the second gas distribution pipes are uniformly arranged at the upper part and the lower part of the annealing furnace.
4. The annealing furnace airflow arrangement system according to claim 3, wherein a second air distribution pipeline positioned at the upper part of the annealing furnace and the first air distribution pipeline are the same group of pipelines, and control valves are arranged on the air outlet end of the second air blower and the nitrogen conveying pipeline.
5. The utility model provides an annealing stove oil smoke recovery processing system for the recovery of the interior oil smoke of annealing stove, its characterized in that includes:
an lehr gas flow arrangement system as claimed in any one of claims 1 to 4 disposed on said lehr;
the cooler is provided with an oil smoke air inlet and an oil smoke air outlet, the oil smoke air inlet is communicated with an air outlet of the second draught fan, the bottom of the cooler is connected with a buffer oil tank through an oil outlet pipe, a heat exchange coil is distributed in the cooler, and a heat exchange medium is introduced into the heat exchange coil; and
and the oil fume outlet of the cooler is connected with the oil fume treatment equipment.
6. The annealing furnace oil smoke recycling treatment system according to claim 5, characterized in that the oil smoke treatment equipment is a whole oil treatment system or an activated carbon adsorption device.
7. The oil fume recovery processing system of the annealing furnace according to claim 5, wherein the cooler comprises a cooling shell, a plurality of baffles are arranged in the cooling shell in a staggered mode, the heat exchange coil is arranged in the cooling shell, and the buffer oil tank is connected with a rolling mill sump oil reservoir.
8. The oil smoke recycling and processing system of claim 5, wherein the number of the annealing furnaces is multiple, a second induced draft fan and a control valve are arranged at the upper part of each annealing furnace, and the air outlet end of each second induced draft fan is communicated with the oil smoke air inlet of the cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221184205.6U CN217895691U (en) | 2022-05-18 | 2022-05-18 | Annealing stove air current arrangement system and annealing stove oil smoke recovery processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221184205.6U CN217895691U (en) | 2022-05-18 | 2022-05-18 | Annealing stove air current arrangement system and annealing stove oil smoke recovery processing system |
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| Publication Number | Publication Date |
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| CN217895691U true CN217895691U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221184205.6U Active CN217895691U (en) | 2022-05-18 | 2022-05-18 | Annealing stove air current arrangement system and annealing stove oil smoke recovery processing system |
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| CN (1) | CN217895691U (en) |
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- 2022-05-18 CN CN202221184205.6U patent/CN217895691U/en active Active
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