CN114636158A - Waste gas purification system for lithium battery cracking and control method - Google Patents
Waste gas purification system for lithium battery cracking and control method Download PDFInfo
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- CN114636158A CN114636158A CN202210101963.5A CN202210101963A CN114636158A CN 114636158 A CN114636158 A CN 114636158A CN 202210101963 A CN202210101963 A CN 202210101963A CN 114636158 A CN114636158 A CN 114636158A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas purification system for lithium battery cracking and a control method, wherein the waste gas purification system comprises a rotary kiln, a negative pressure box, an oxygen introducing device, a central control module and a waste gas purification device; the negative pressure box is connected with the rotary kiln through a pipeline, and a gas detection device is arranged in the negative pressure box and used for detecting the type and the content of waste gas entering the negative pressure box from the rotary kiln; the central control module is connected with the gas detection device and used for issuing a control instruction to the oxygen introducing device according to the type and the content of the waste gas obtained by detection; the oxygen introducing device is in signal connection with the central control module, is communicated with the rotary kiln through a pipeline and is used for adjusting the oxygen introducing amount of the oxygen introducing device communicated to the rotary kiln according to a control instruction issued by the central control module so as to ensure that the rotary kiln is fully combusted; the waste gas purification device is connected with the rotary kiln through a pipeline and is used for purifying and discharging gas which is fully combusted in the rotary kiln; the invention can ensure that the interior of the rotary kiln is fully combusted, and the exhaust emission is reduced.
Description
Technical Field
The invention relates to the technical field of lithium battery treatment, in particular to a waste gas purification system for lithium battery cracking and a control method.
Background
The lithium battery can generate substance decomposition during high-temperature cracking in the rotary kiln so as to generate a large amount of gas, the limited oxygen in the high-temperature combustion process of the lithium battery reacts with the lithium battery solution to generate carbon dioxide due to the limited oxygen content in the rotary kiln, the carbon dioxide concentration is highest at the beginning of the reaction, the carbon dioxide concentration can be rapidly reduced along with the reduction of the oxygen content along with the gradual increase of the gas generated by the battery, and the lithium battery continues to combust to release H under the oxygen-poor environment2、C2H4、CH4、C2H6、C3H6If the gas is directly discharged into the atmosphere, serious air pollution is caused to the atmosphere.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a waste gas purification system for lithium battery cracking, which can automatically adjust the oxygen amount according to the combustion degree, so that the lithium battery in the rotary kiln can be fully combusted under the condition of sufficient oxygen, and the pollution of the atmosphere by the gas released by insufficient combustion is avoided.
The present invention also provides a method for controlling the purification of cracked waste gas of lithium battery, which is applied to the above-mentioned system for purifying cracked waste gas of lithium battery.
One of the purposes of the invention is realized by adopting the following technical scheme:
a lithium battery cracking exhaust gas purification system comprising: the rotary kiln, the negative pressure box, the oxygen introducing device, the central control module and the waste gas purification device;
the negative pressure box is connected with the rotary kiln through a pipeline, and a gas detection device is arranged in the negative pressure box and used for detecting the type and content of waste gas entering the negative pressure box from the rotary kiln;
the central control module is connected with the gas detection device and used for issuing a control instruction to the oxygen introducing device according to the type and the content of the waste gas obtained by detection;
the oxygen introducing device is in signal connection with the central control module, is communicated with the rotary kiln through a pipeline and is used for adjusting the oxygen introducing amount of the oxygen introducing device to the rotary kiln according to a control instruction issued by the central control module so as to ensure that the rotary kiln is fully combusted;
and the waste gas purification device is connected with the rotary kiln through a pipeline and is used for purifying and discharging the gas which is fully combusted in the rotary kiln.
Furthermore, a cooling device is arranged on a pipeline connecting the negative pressure box and the rotary kiln and used for cooling the waste gas entering the negative pressure box from the rotary kiln and then carrying out gas detection on the waste gas.
Furthermore, the negative pressure box is connected with a negative pressure suction device, the negative pressure suction device is connected with the central control module, and the central control module is used for controlling the working time and the working power of the negative pressure suction device so as to suck the waste gas in the rotary kiln into the negative pressure box at different cracking time periods for gas detection.
Further, the gas detection device is one or more of a semiconductor gas sensor, an electrochemical gas sensor and an optical gas sensor.
Further, the oxygen introducing device comprises an oxygen producing chamber, oxygen producing raw materials are arranged in the oxygen producing chamber, the oxygen producing chamber is connected with the waste gas purification device and is used for introducing carbon dioxide gas obtained by the final purification of the waste gas purification device into the oxygen producing chamber to react with the oxygen producing raw materials to produce oxygen.
Furthermore, a water absorption device is arranged between the waste gas purification device and the oxygen production chamber and used for absorbing moisture in gas so as to introduce pure carbon dioxide gas into the oxygen production chamber.
Furthermore, a heat exchanger is arranged between the rotary kiln and the waste gas purification device, and a refrigerant for providing cold energy is introduced into the heat exchanger and is used for cooling the waste gas discharged by the rotary kiln and then introducing the cooled waste gas into the waste gas purification device for purification treatment.
Further, the exhaust gas purification apparatus includes a spray tower in which a liquid absorbent is sprayed to absorb gases other than carbon dioxide.
Furthermore, a spraying interface of the spraying tower is connected with a plurality of absorbent storage bodies through pipelines and valves, different liquid absorbents are stored in different absorbent storage bodies, valves corresponding to different absorbent storage bodies are connected with the central control module, and the central control module switches the valves corresponding to different absorbent storage bodies according to the types of the waste gas so as to spray different liquid absorbents into the spraying tower.
The second purpose of the invention is realized by adopting the following technical scheme:
the method for controlling the waste gas purification of the lithium battery cracking is applied to the waste gas purification system of the lithium battery cracking, and comprises the following steps:
receiving the type and the content of the waste gas fed back by the gas detection device, and issuing a control instruction to the oxygen introducing device according to the type and the content of the waste gas obtained by detection so as to adjust the oxygen introducing amount of the oxygen introducing device to the rotary kiln to ensure that the rotary kiln is fully combusted.
Compared with the prior art, the invention has the beneficial effects that:
in the process of cracking and burning the lithium battery by using the rotary kiln, the type and the content of waste gas generated by burning the lithium battery are detected in real time, and the content of oxygen introduced into the rotary kiln by the oxygen introducing device is automatically adjusted, so that the lithium battery material in the rotary kiln can be fully burnt, and harmful gas generated by insufficient burning is reduced; meanwhile, the waste gas purification device is used for purifying the fully combusted gas again, and then the purified gas is discharged or recycled, so that the purpose of environmental protection is achieved.
Drawings
FIG. 1 is a schematic diagram of the structure and signal connection of a waste gas purification system for lithium battery cracking according to the present invention;
fig. 2 is a schematic view showing the structure and signal connection of the exhaust gas purifying apparatus of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example one
This embodiment provides a waste gas purification system of lithium cell schizolysis, this system mainly burns discarded lithium cell through the rotary kiln, and the lithium cell can be disassembled or smash the lithium cell in advance before burning, and the lithium cell material after will handling lets in the rotary kiln, and when the rotary kiln carries out the high temperature combustion schizolysis to lithium cell material, the rotary kiln drives the lithium cell at the kiln internal rotation, and the lithium cell burning of rotatory limit burning is more abundant.
As shown in fig. 1, a solid line in fig. 1 represents a pipeline connection manner between devices in the exhaust gas purification system, a dotted line in fig. 1 represents a signal connection relationship between the devices in the exhaust gas purification system, and the rotary kiln of the embodiment is in signal communication with a central control module, which can intelligently control the rotation speed of the rotary kiln and the combustion temperature in the rotary kiln. Simultaneously, the rotary kiln of this embodiment is connected with negative pressure tank, logical oxygen device and exhaust gas purification device, wherein the negative pressure tank lead to oxygen device and abandonment purifier and all connect well accuse module utilizes well accuse module realizes that the exhaust treatment process of rotary kiln carries out automated control, improves exhaust gas purification system's intelligent degree.
In this embodiment, the top of the rotary kiln is communicated with the negative pressure tank through a pipeline, when the negative pressure tank is in a negative pressure state, waste gas generated by combustion in the rotary kiln can enter the negative pressure tank through the pipeline, and a gas detection device arranged in the negative pressure tank is used for detecting the waste gas introduced from the rotary kiln so as to identify the type and content of the waste gas entering the negative pressure tank from the rotary kiln. And a negative pressure valve is arranged on a pipeline between the negative pressure box and the rotary kiln, the negative pressure box is connected with a negative pressure suction device, the negative pressure suction device can be a negative pressure fan, when the negative pressure valve and the negative pressure fan are started, the air pressure in the negative pressure box is reduced, the air pressure in the rotary kiln is higher than the air pressure in the negative pressure box, waste gas obtained by combustion in the rotary kiln is introduced into the negative pressure box through pressure difference, the negative pressure box and the negative pressure valve are closed after the waste gas enters the negative pressure box, the waste gas is stopped in the negative pressure box, and the waste gas is detected by a gas detection device in the negative pressure box.
In this embodiment, the negative pressure suction device and the negative pressure valve are connected to the central control module, the central control module can be used to control the on-off state of the negative pressure valve, and simultaneously, the central control module can also control the working time and the working power of the negative pressure suction device, so as to control the negative pressure value in the negative pressure tank, and realize that the waste gas in the rotary kiln is sucked into the negative pressure tank at different cracking periods to perform gas detection. In the embodiment, the negative pressure air suction device can be controlled to be started once every preset time after the lithium battery starts to burn, so that the waste gas released by the lithium battery can be detected every preset time, and the burning degree of the lithium battery can be indirectly determined.
The gas detection device of the embodiment can be one or a combination of a plurality of types of semiconductor gas sensors, electrochemical gas sensors or optical gas sensors, and the combination of the plurality of types of sensors is used for carrying out waste gas type detection and content detection of each type of waste gas on the waste gas released in the lithium battery combustion process; the selection and detection principle of the gas sensor is disclosed in the prior art and will not be described in detail here. The gas detection device is in signal connection with the central control module, and the central control module issues a control instruction to the oxygen introducing device according to the type and content of the waste gas obtained through detection so as to adjust the oxygen introducing amount of the oxygen introducing device to the rotary kiln.
Because negative pressure tank embeds there is various detection sensor, and the exhaust gas temperature of release after the burning is higher, leads to gaseous detection accuracy to have the mistake in order to avoid high temperature, this embodiment negative pressure tank with be equipped with the heat sink on the pipeline that the rotary kiln links to each other, this heat sink can be water cooling plant, can be the heat exchanger that has refrigeration material, utilizes the heat sink to follow the rotary kiln gets into carry out gaseous detection to exhaust gas again after cooling down of negative pressure tank's exhaust gas, improve the degree of accuracy that gaseous detected.
The oxygen introducing device is communicated with the rotary kiln through a pipeline, the oxygen introducing device comprises an oxygen making chamber and an oxygen introducing valve, and oxygen making raw materials are arranged in the oxygen making chamber and are used for making oxygen; in addition, the oxygen valve is in signal connection with the central control module and used for adjusting the on-off state of the oxygen valve according to a control instruction issued by the central control module, so that the oxygen amount led into the rotary kiln is adjusted to promote the full combustion in the rotary kiln.
In the embodiment, a large amount of carbon dioxide can be generated after the lithium battery is fully combusted, and in order to fully utilize the generated carbon dioxide, the oxygen generation raw material in the oxygen generation chamber can adopt sodium peroxide; and the oxygen generation chamber is connected with the waste gas purification device through a pipeline and a valve and is used for introducing carbon dioxide gas obtained by the final purification of the waste gas purification device into the oxygen generation chamber, so that the carbon dioxide and sodium peroxide react to generate oxygen, and the oxygen is introduced into the rotary kiln to ensure that lithium battery materials in the rotary kiln are more fully combusted, and H in the waste gas is used2、C2H4、CH4、C2H6、C3H6After the gases are fully combusted, water vapor and carbon dioxide are generated, and the release of harmful gases is reduced.
In addition, in the waste gas, in addition to the above gas, H may be generated in the high-temperature combustion process of the lithium battery2S、HF、SO2And the like, and therefore, the gas after sufficient combustion needs to be further filteredAnd purging to release the gas to the atmosphere. As shown in fig. 2, solid arrows in fig. 2 represent the exhaust gas flow-through manner between the devices, and dotted lines represent the signal connection relationship between the central control module and the shower valve. This embodiment adopts exhaust gas purification device purifies the gas after abundant burning, exhaust gas purification device pass through the pipeline with the rotary kiln links to each other. The rotary kiln still needs cooling before the gas after fully burning is introduced into the waste gas purification device, therefore, a heat exchanger is also arranged between the rotary kiln and the waste gas purification device, and a refrigerant for providing cold energy is introduced into the heat exchanger and is used for introducing the waste gas discharged by the rotary kiln into the waste gas purification device for purification treatment after cooling treatment.
The waste gas purification device of this embodiment includes the spray column, utilizes the spray column sprays the liquid absorbent and absorbs the gas beyond the carbon dioxide, will absorb remaining carbon dioxide after the purification treatment and discharge, reduces because of the harmful substance polluted air that does not fully burn and release, simultaneously, still can carry out reutilization with the carbon dioxide, reduces the emission of carbon dioxide, reduces environmental pollution.
Because various gases are generated after the gas is fully combusted, and various liquid absorbents are needed to absorb different gases, the embodiment is provided with a plurality of absorbent storage bodies, different liquid absorbents are stored in different absorbent storage bodies, and different liquid absorbents are used for absorbing different waste gases; correspondingly, the spray tower can also be provided with a plurality of spray interfaces which are butted with the absorbent storage bodies, the spray interfaces of the spray tower are connected with the absorbent storage bodies through pipelines and spray valves, different spray valves are opened, and corresponding liquid absorbent is sprayed into the spray tower, so that the liquid absorbent reacts with the gas introduced into the spray tower, and the absorption of the gas except carbon dioxide is realized. Wherein the liquid absorbent can be saturated sodium bicarbonate which absorbs SO without affecting carbon dioxide2Carbon dioxide can be generated while purifying waste gas, so that oxygen can be generated by providing carbon dioxide for the oxygen generating chamber, and a large amount of carbon dioxide can be avoidedThe direct emission of carbon oxides into the atmosphere affects air quality.
In this embodiment, the spray valves corresponding to different absorbent storage bodies are connected to the central control module, and the central control module receives the type of the exhaust gas detected by the gas detection device and then issues a control command to the corresponding spray valves according to the type of the exhaust gas to switch the spray valves corresponding to the different absorbent storage bodies to spray different liquid absorbents into the spray tower, for example, when the gas detection device detects that carbon dioxide and sulfur dioxide are contained in the exhaust gas, the spray valves corresponding to the absorbent storage bodies for storing saturated sodium bicarbonate can be controlled to be opened, the spray valves corresponding to other absorbent storage bodies are closed, so that a saturated sodium bicarbonate solution is sprayed into the spray tower, the saturated sodium bicarbonate solution reacts with the sulfur dioxide in the exhaust gas, and the carbon dioxide in the exhaust gas can be introduced into the oxygen generation chamber to react with the oxygen generation raw material, and carbon dioxide emission is reduced.
Because the oxygen generation in-process of system oxygen chamber does not need the participation of water, and it is more to spray solution in the spray column results in gaseous moisture, consequently, exhaust gas purification device with still be equipped with water absorption device between the system oxygen chamber, water absorption device can be the drying tower for the moisture in the adsorbed gas makes to the pure carbon dioxide gas after the system oxygen chamber lets in the dewatering.
Example two
The embodiment provides a method for controlling purification of waste gas from lithium battery cracking, which is applied to the above-mentioned system for purifying waste gas from lithium battery cracking, and the method is implemented by a central control module in the system for purifying waste gas, and specifically includes:
the central control module receives the type and the content of the waste gas fed back by the gas detection device, and sends a control instruction to the oxygen introducing device according to the detected type and content of the waste gas so as to adjust the oxygen introducing amount of the oxygen introducing device to the rotary kiln to ensure that the rotary kiln is fully combusted; meanwhile, the central control module can control the opening and closing of each valve in the waste gas purification system, so that the intelligent control of waste gas purification is realized.
The method in this embodiment and the system in the foregoing embodiment are based on two aspects of the same inventive concept, and the structure and implementation process of the system have been described in detail in the foregoing, so that those skilled in the art can clearly understand the implementation process of the method in this embodiment according to the foregoing description, and for the brevity of the description, detailed description is omitted here.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A waste gas purification system for lithium battery cracking, comprising: the rotary kiln, the negative pressure box, the oxygen introducing device, the central control module and the waste gas purification device;
the negative pressure box is connected with the rotary kiln through a pipeline, and a gas detection device is arranged in the negative pressure box and used for detecting the type and content of waste gas entering the negative pressure box from the rotary kiln;
the central control module is connected with the gas detection device and used for issuing a control instruction to the oxygen introducing device according to the type and content of the detected waste gas;
the oxygen introducing device is in signal connection with the central control module, is communicated with the rotary kiln through a pipeline and is used for adjusting the oxygen introducing amount of the oxygen introducing device to the rotary kiln according to a control instruction issued by the central control module so as to ensure that the rotary kiln is fully combusted;
and the waste gas purification device is connected with the rotary kiln through a pipeline and is used for purifying and discharging the gas which is fully combusted in the rotary kiln.
2. The waste gas purification system for lithium battery cracking as claimed in claim 1, wherein a temperature reduction device is arranged on a pipeline connecting the negative pressure tank and the rotary kiln, and is used for carrying out gas detection on waste gas after the waste gas entering the negative pressure tank from the rotary kiln is cooled.
3. The system for purifying cracked waste gas of lithium batteries as claimed in claim 1, wherein said negative pressure tank is connected with a negative pressure suction device, and said negative pressure suction device is connected with said central control module, said central control module is used for controlling working time and working power of said negative pressure suction device to suck waste gas in said rotary kiln into said negative pressure tank for gas detection at different periods of cracking.
4. The lithium battery cracked exhaust gas purification system as claimed in claim 1, wherein the gas detection device is one or more of a combination of a semiconductor gas sensor, an electrochemical gas sensor, and an optical gas sensor.
5. The waste gas purification system for lithium battery cracking as claimed in claim 1, wherein the oxygen introducing device comprises an oxygen generating chamber, oxygen generating raw material is arranged in the oxygen generating chamber, and the oxygen generating chamber is connected with the waste gas purification device and is used for introducing carbon dioxide gas finally purified by the waste gas purification device into the oxygen generating chamber to react with the oxygen generating raw material to generate oxygen.
6. The waste gas purification system for lithium battery cracking as claimed in claim 5, wherein a water absorption device is further disposed between the waste gas purification device and the oxygen generation chamber for absorbing moisture in gas to introduce pure carbon dioxide gas into the oxygen generation chamber.
7. The waste gas purification system for lithium battery cracking as claimed in claim 1, wherein a heat exchanger is further arranged between the rotary kiln and the waste gas purification device, and a refrigerant for providing cold energy is introduced into the heat exchanger for cooling the waste gas discharged from the rotary kiln and then introducing the cooled waste gas into the waste gas purification device for purification.
8. The lithium battery cracking off-gas purification system as claimed in claim 1, wherein the off-gas purification device comprises a spray tower, and the spray tower sprays a liquid absorbent to absorb gases other than carbon dioxide.
9. The system for purifying cracked waste gas of lithium battery as claimed in claim 8, wherein the spray interface of the spray tower is connected to a plurality of absorbent storage bodies through pipes and valves, different liquid absorbents are stored in different absorbent storage bodies, the valves corresponding to different absorbent storage bodies are connected to the central control module, and the central control module switches the valves corresponding to different absorbent storage bodies according to the type of waste gas to spray different liquid absorbents into the spray tower.
10. A method for controlling purification of waste gas generated by cracking lithium battery, which is applied to the system for purifying waste gas generated by cracking lithium battery as claimed in any one of claims 1 to 9, the method comprising:
receiving the type and the content of the waste gas fed back by the gas detection device, and issuing a control instruction to the oxygen introducing device according to the type and the content of the waste gas obtained by detection so as to adjust the oxygen introducing amount of the oxygen introducing device to the rotary kiln to ensure that the rotary kiln is fully combusted.
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| CN202210101963.5A CN114636158A (en) | 2022-01-27 | 2022-01-27 | Waste gas purification system for lithium battery cracking and control method |
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| CN202210101963.5A CN114636158A (en) | 2022-01-27 | 2022-01-27 | Waste gas purification system for lithium battery cracking and control method |
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| CN211877898U (en) * | 2020-04-14 | 2020-11-06 | 国家煤及盐化工产品质量监督检验中心(榆林)(榆林市产品质量监督检验所) | Coal detection device |
| US20210194075A1 (en) * | 2019-12-20 | 2021-06-24 | Yau Fu Industry Co., Ltd. | Waste Lithium Battery Recovery System |
| CN213687843U (en) * | 2020-11-16 | 2021-07-13 | 深圳市森能燃烧设备有限公司 | Hot cleaning furnace with oxygen supplementing function |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203702345U (en) * | 2013-10-31 | 2014-07-09 | 江苏海事职业技术学院 | Comprehensive utilization system for heat and tail gas of gas turbine |
| CN108168307A (en) * | 2017-12-29 | 2018-06-15 | 山东精工电子科技有限公司 | It is a kind of can be in the air inlet and outlet device of sintering three-element cell positive material under excess oxygen |
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| CN211877898U (en) * | 2020-04-14 | 2020-11-06 | 国家煤及盐化工产品质量监督检验中心(榆林)(榆林市产品质量监督检验所) | Coal detection device |
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