CN219674250U - Broken schizolysis tail gas processing system of battery - Google Patents
Broken schizolysis tail gas processing system of battery Download PDFInfo
- Publication number
- CN219674250U CN219674250U CN202320778179.8U CN202320778179U CN219674250U CN 219674250 U CN219674250 U CN 219674250U CN 202320778179 U CN202320778179 U CN 202320778179U CN 219674250 U CN219674250 U CN 219674250U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- pyrolysis
- washing tank
- cracking
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012545 processing Methods 0.000 title description 2
- 238000005406 washing Methods 0.000 claims abstract description 39
- 238000000197 pyrolysis Methods 0.000 claims abstract description 29
- 238000005336 cracking Methods 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 18
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 3
- 239000003518 caustics Substances 0.000 claims 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052731 fluorine Inorganic materials 0.000 abstract description 13
- 239000011737 fluorine Substances 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 10
- 239000003513 alkali Substances 0.000 abstract description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 6
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 3
- 239000000920 calcium hydroxide Substances 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 70
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a battery crushing and cracking tail gas treatment system which comprises a catalytic combustion furnace, a spray tower and an alkaline washing tank. Wherein, the pyrolysis gas inlet of the catalytic combustion furnace can be communicated with the exhaust pipe of the pyrolysis furnace through a pipeline. In the process of cracking the waste power battery fragments, the cracking tail gas generated by the cracking furnace can be injected into the catalytic combustion furnace through the exhaust pipe. The pyrolysis tail gas is further subjected to pyrolysis incineration by a catalytic combustion furnace, and harmful substances such as fluoride, dioxin and the like in the pyrolysis tail gas are treated. The tail gas generated by the catalytic combustion furnace can be injected into the spray tower through the tail gas outlet, the spray tower can cool the tail gas, and meanwhile dust in the tail gas is removed. The tail gas after spray treatment can be injected into an alkaline washing tank, alkali liquor is stored in the alkaline washing tank, fluorine gas in the tail gas can be subjected to neutralization reaction with calcium hydroxide, and fixed waste materials are generated and deposited at the bottom of the alkaline washing tank, so that the fluorine gas in the tail gas is effectively removed, and the harm to the environment is reduced.
Description
Technical Field
The utility model relates to the technical field of destroying solid waste or converting the solid waste into useful or harmless things, in particular to a battery breaking and cracking tail gas treatment system.
Background
With the rapid increase of the number of new energy automobiles, the number of generated waste power batteries is also increasing. If the waste power batteries enter the ecological environment, the waste power batteries can cause great harm to the environment. Therefore, the generated waste power batteries need to be recycled.
The waste power battery mainly comprises a shell, electrolyte, copper aluminum foil and the like. The current common treatment mode is to crush the waste power batteries, then inject the crushed waste power batteries into a cracking furnace for burning, and then put cracking powder generated by cracking into a separation system for separating and recycling different components in the cracking powder. Meanwhile, the tail gas generated by cracking of the cracking furnace is treated through the tail gas evolution system, and the concentration of harmful components in the tail gas is reduced to a dischargeable standard and then is discharged.
The patent application with the publication number of CN 111842410A discloses a full-component recovery system of waste power battery monomers, and particularly discloses a tail gas purification system, wherein crushed materials are subjected to pyrolysis reaction in a rotary kiln, generated pyrolysis gas sequentially passes through a cyclone dust collector, a heat exchanger and a third bag dust collector to be subjected to dust removal treatment, the pyrolysis gas after dust removal flows back into a pyrolysis gas burner through a fourth induced draft fan to be combusted, the pyrolysis gas is organic waste gas with high heat value, and enters a hot air box to supply energy for the pyrolysis system after combustion; after the hot air entering the hot air jacket supplies energy, the temperature and dust of the hot air are reduced and removed through the spray tower, the second gas-liquid separator and the fourth cloth bag dust collector in sequence through the air outlet of the hot air jacket, and then the hot air is discharged to the external environment through a fifth induced draft fan.
However, the main components of the pyrolysis gas generated by the pyrolysis furnace include fluoride, dioxin and the like, and the pyrolysis gas burner can treat hazardous wastes such as fluoride, dioxin and the like. However, fluoride generates fluorine gas through high-temperature combustion, so that a large amount of fluorine gas exists in the tail gas discharged from the pyrolysis gas burner, but no equipment capable of effectively treating the fluorine gas is arranged in the prior art, so that more fluorine gas still remains in the discharged tail gas, and the direct discharge still causes a certain harm to the environment.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a battery breaking and cracking tail gas treatment system. The fluorine gas generated after the catalytic combustion of the pyrolysis gas can be effectively treated, and the harm of tail gas to the environment is reduced. The specific technical scheme is as follows:
there is provided a battery crush cracking tail gas treatment system comprising, in a first possible implementation:
the catalytic combustion furnace is provided with a pyrolysis gas inlet and a tail gas outlet;
the spray tower is provided with an air inlet and an air outlet, the air inlet is communicated with the tail gas outlet, and the air outlet is communicated with the alkaline washing tank through a pipeline.
In combination with the first implementation manner, in a second implementation manner, the device further comprises at least one water washing tower, and all water washing towers are sequentially connected in series between the exhaust port and the alkaline washing tank.
In combination with the second implementation manner, in a third implementation manner, the air pump further comprises an air booster pump, and the air booster pump is connected in series between the exhaust port and the water scrubber.
In combination with the second implementation manner, in a fourth implementation manner, the device further comprises an air secondary booster pump, and the air secondary booster pump is connected in series between the water scrubber and the alkaline washing tank.
With reference to the first implementation manner, in a fifth implementation manner, a filter press is further included, and the filter press is in communication with the alkaline washing tank.
The beneficial effects are that: by adopting the battery breaking and cracking tail gas treatment system, fluoride, dioxin and other dangerous wastes in cracking gas generated by cracking can be treated by the arranged catalytic combustion furnace, the treated tail gas is subjected to cooling and dust removal by the spray tower, the cooled and dust-removed tail gas is injected into the alkaline washing tank, and the fluorine gas in the tail gas is neutralized by alkali liquor stored in the alkaline washing tank, so that the fluorine gas in the tail gas is effectively treated, and the harm of the tail gas to the environment is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.
FIG. 1 is a schematic diagram of a system for treating cracked tail gas of a battery according to an embodiment of the present utility model;
reference numerals:
1-catalytic combustion furnace, 2-spray tower, 3-alkaline washing pool, 4-water washing tower, 5-air booster pump, 6-air secondary booster pump and 7-filter press.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
A schematic system diagram of a battery crush pyrolysis tail gas treatment system as shown in fig. 1, the treatment system comprising:
the catalytic combustion furnace 1 is provided with a pyrolysis gas inlet and a tail gas outlet;
the spray tower 2 and the alkaline washing pool 3 are provided with an air inlet and an air outlet, the air inlet is communicated with the tail gas outlet, and the air outlet is communicated with the alkaline washing pool 3 through a pipeline.
Specifically, the treatment system includes a catalytic combustion furnace 1, a spray tower 2, and an alkaline wash tank 3. Wherein, the pyrolysis gas inlet of the catalytic combustion furnace 1 can be communicated with the exhaust pipe of the pyrolysis furnace through a pipeline. In the process of cracking the waste power battery fragments, the cracking tail gas generated by the cracking furnace can be injected into the catalytic combustion furnace 1 through the exhaust pipe. The pyrolysis tail gas is further subjected to pyrolysis incineration by the catalytic combustion furnace 1, and harmful substances such as fluoride, dioxin and the like in the pyrolysis tail gas are removed. The tail gas generated by the catalytic combustion furnace 1 can be injected into the spray tower 2 through the tail gas outlet, the spray tower 2 can cool the tail gas, and meanwhile dust in the tail gas is removed. The tail gas after spray treatment can be injected into the alkaline washing tank 3, alkali liquor such as calcium hydroxide is stored in the alkaline washing tank 3, fluorine gas in the tail gas can react with the calcium hydroxide to generate calcium fluoride to be deposited at the bottom of the alkaline washing tank 3, so that the fluorine gas in the tail gas is effectively removed, and the harm to the environment is reduced.
In this embodiment, optionally, at least one water scrubber 4 is further included, and all water scrubbers 4 are serially connected between the exhaust port and the alkaline washing tank 3 in sequence.
It will be appreciated that temperature will have an effect on the ph of the alkaline wash tank 3 and thus the ph monitoring of the alkaline wash tank 3 by the monitoring system. Therefore, a plurality of water washing towers 4 can be arranged between the alkaline washing tank 3 and the spray towers 2, the tail gas treated by the spray towers 2 can sequentially pass through the water washing towers 4 connected in series, the water washing towers 4 can further cool and remove dust on the injected tail gas, and the influence of the tail gas treated by water washing on the alkalinity of the alkaline washing tank 3 is avoided.
In this embodiment, optionally, an air booster pump 5 is further included, and the air booster pump 5 is connected in series between the exhaust port and the water scrubber 4. Specifically, the exhaust port of the spray tower 2 may be connected to the air inlet pipe of the water scrubber 4 via the air booster pump 5. The flow velocity of the tail gas after spray treatment can be increased through the air booster pump 5, so that the tail gas can rapidly pass through each water scrubber 4, and the tail gas treatment efficiency is improved.
In this embodiment, the air secondary booster pump 6 is optionally further included, and the air secondary booster pump 6 is connected in series between the water scrubber 4 and the alkaline washing tank 3.
It should be understood that the inside of the water scrubber 4 is provided with a plurality of packing layers, and the air pressure of the exhaust gas discharged after the exhaust gas passes through the packing layers is greatly reduced. In order to fully neutralize the fluorine gas in the tail gas and the alkali liquor in the alkali washing tank 3, the air outlet pipe of the water washing tower 4 can be extended into the alkali washing tank 3. However, the deeper the air outlet pipe is extended, the larger the liquid pressure is, and if the air pressure is too low, the tail gas cannot be injected into the alkali liquid in the alkali washing tank 3.
Therefore, the air outlet pipe of the water washing tower 4 can be communicated with the alkaline washing tank 3 through the air secondary booster pump 6, and the air pressure of the tail gas after water washing treatment can be increased through the air secondary booster pump 6, so that the tail gas is pressed into alkaline liquor stored in the alkaline washing tank 3, and fluorine gas in the tail gas and alkaline are subjected to neutralization reaction.
In this embodiment, optionally, a filter press 7 is further included, and the filter press 7 is in communication with the alkaline washing tank 3. Specifically, the bottom of the alkaline washing tank 3 is communicated with a filter press 7 through a discharge pipeline, and water in calcium fluoride discharged from the alkaline washing tank 3 can be extruded out through the filter press 7 so as to recycle the calcium fluoride.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (5)
1. A battery crush cracking tail gas treatment system, comprising:
the catalytic combustion furnace is provided with a pyrolysis gas inlet and a tail gas outlet;
the spray tower is provided with an air inlet and an air outlet, the air inlet is communicated with the tail gas outlet, and the air outlet is communicated with the alkaline washing tank through a pipeline.
2. The battery crush pyrolysis tail gas treatment system of claim 1, further comprising at least one water scrubber, all water scrubbers being serially connected in sequence between the vent and caustic wash tank.
3. The battery crush pyrolysis tail gas treatment system of claim 2, further comprising an air booster pump connected in series between the exhaust port and the water scrubber.
4. The battery crush pyrolysis tail gas treatment system of claim 2, further comprising an air secondary booster pump connected in series between the water scrubber and the caustic wash tank.
5. The battery crush pyrolysis tail gas treatment system of claim 1, further comprising a filter press in communication with the caustic wash tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320778179.8U CN219674250U (en) | 2023-04-11 | 2023-04-11 | Broken schizolysis tail gas processing system of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320778179.8U CN219674250U (en) | 2023-04-11 | 2023-04-11 | Broken schizolysis tail gas processing system of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219674250U true CN219674250U (en) | 2023-09-12 |
Family
ID=87899173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320778179.8U Active CN219674250U (en) | 2023-04-11 | 2023-04-11 | Broken schizolysis tail gas processing system of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219674250U (en) |
-
2023
- 2023-04-11 CN CN202320778179.8U patent/CN219674250U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |