CN115283425A - Electrified pretreatment system of waste lithium battery - Google Patents
Electrified pretreatment system of waste lithium battery Download PDFInfo
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- CN115283425A CN115283425A CN202210883396.3A CN202210883396A CN115283425A CN 115283425 A CN115283425 A CN 115283425A CN 202210883396 A CN202210883396 A CN 202210883396A CN 115283425 A CN115283425 A CN 115283425A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 48
- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 238000000197 pyrolysis Methods 0.000 claims abstract description 88
- 239000007789 gas Substances 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 239000011261 inert gas Substances 0.000 claims abstract description 59
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 25
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000004880 explosion Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 diaphragms Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/15—Electronic waste
- B09B2101/16—Batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an electrified pretreatment system of waste lithium batteries, which comprises a crushing device, a pyrolysis furnace, an inert gas supply device, a first gas concentration detection device, a second gas concentration detection device and a controller, wherein the crushing device is connected with the pyrolysis furnace; the crushing device is provided with a crushing cavity, a first air inlet and a first air outlet which are communicated with the crushing cavity; a feed port of the pyrolysis furnace is communicated with a discharge port of the crushing device, and the pyrolysis furnace is provided with a pyrolysis cavity, and a second air inlet and a second air outlet which are communicated with the pyrolysis cavity; the first air inlet and the second air inlet are both communicated with an inert gas supply device, and the first exhaust port and the second exhaust port are both communicated with an external waste gas treatment system; the first gas concentration detection device is arranged on the crushing device and is used for detecting the concentration of oxygen or inert gas in the crushing cavity; the second gas concentration detection device is arranged on the pyrolysis furnace and used for detecting the concentration of the inert gas in the pyrolysis cavity. The safety of the charged crushing process, the feeding process and the pyrolysis process can be improved.
Description
Technical Field
The invention relates to the technical field of waste lithium battery treatment, in particular to an electrified pretreatment system for waste lithium batteries.
Background
As lithium batteries are widely applied, the disposal requirements of a large number of waste lithium batteries are increased, and because the waste lithium batteries contain substances such as metals, diaphragms, electrolyte and the like, if standardized treatment is not carried out, not only soil and water are polluted, but also nonrenewable resources are wasted, so that the waste lithium batteries are subjected to resource disposal, and the substances such as the metals in the waste lithium batteries can effectively relieve the problem of resource shortage and effectively reduce the pollution to the environment.
In practical application, solution soaking discharge is generally adopted for pretreatment of charged waste lithium batteries, and the process causes secondary pollution and harms the safety of operating personnel, and is not favorable for batch disposal
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an electrified pretreatment system for waste lithium batteries, which can realize safe crushing of the waste lithium batteries, effectively avoid hidden dangers such as fire, explosion and the like, and improve the operation safety.
The purpose of the invention is realized by adopting the following technical scheme:
the charged pretreatment system of the waste lithium battery comprises a crushing device, a pyrolysis furnace, an inert gas supply device, a first gas concentration detection device, a second gas concentration detection device and a controller;
the crushing device is used for crushing and decomposing the charged waste lithium batteries, and is provided with a crushing cavity, a first air inlet and a first air outlet which are communicated with the crushing cavity;
the feeding hole of the pyrolysis furnace is communicated with the discharging hole of the crushing device, the pyrolysis furnace is used for pyrolyzing the diaphragm and the electrolyte in the mixture obtained after the crushing and the decomposition of the crushing device, and the pyrolysis furnace is provided with a pyrolysis cavity, and a second air inlet and a second air outlet which are communicated with the pyrolysis cavity;
valves which are used for controlling the opening or the closing of the feeding hole and the discharging hole of the crushing device and the feeding hole and the discharging hole of the pyrolysis furnace are arranged on the feeding hole and the discharging hole of the crushing device and are controlled by the controller, the first air inlet and the second air inlet are both communicated with the inert gas supply device, and the first air outlet and the second air outlet are both communicated with an external waste gas treatment system;
the first gas concentration detection device is arranged on the crushing device and is used for detecting the concentration of oxygen or inert gas in the crushing cavity;
the second gas concentration detection device is arranged on the pyrolysis furnace and is used for detecting the concentration of inert gas in the pyrolysis cavity;
the controller is used for controlling the actions of the crushing device, the pyrolysis furnace and the inert gas supply device according to the feedback information of the first gas concentration detection device and the second gas concentration detection device.
Further, the second gas concentration detection device is close to the second exhaust port.
Furthermore, the feed inlet of pyrolysis oven with the second gas vent all is located the top of pyrolysis oven, the discharge gate of pyrolysis oven with the second gas inlet all is located the bottom of pyrolysis oven.
Furthermore, the crushing device and the pyrolysis furnace are sequentially arranged along the horizontal direction, a discharge port of the crushing device is positioned at the bottom of the crushing device, and a first feeding device controlled by the controller to act is arranged between the discharge port of the crushing device and a feed port of the pyrolysis furnace.
Further, the first feeding device is a scraper conveyor.
Further, the first gas concentration detection device is an oxygen concentration detection device.
Further, the method also comprises the following steps:
the weighing and metering device is also provided with a valve which is used for controlling the opening or closing of the weighing and metering device and is controlled by the controller, a discharge port of the weighing and metering device is communicated with the feed port of the crushing device and is used for weighing and metering the waste lithium batteries before entering the crushing device, and the weighing and metering device is provided with a weighing and metering cavity, a third gas concentration detection device, a third gas inlet and a third gas outlet which are communicated with the weighing and metering cavity;
the third gas inlet is communicated with the inert gas supply device, the third gas outlet is communicated with an external waste gas treatment system, the third gas concentration detection device is used for detecting the concentration of oxygen or inert gas in the weighing and metering cavity, and the controller is further used for controlling the crushing device, the pyrolysis furnace and the inert gas supply device to act according to feedback information of the third gas concentration detection device.
Further, the third gas concentration detection device is an oxygen concentration detection device.
Furthermore, the weighing and metering device also comprises a feeding device which is communicated with the feeding hole of the weighing and metering device and is controlled by the controller to act.
Further, the weighing and metering device and the crushing device are sequentially arranged from top to bottom, and a discharge hole of the weighing and metering device is located above a feed inlet of the crushing device.
Compared with the prior art, the invention has the beneficial effects that:
the charged pretreatment system for the waste lithium batteries can avoid explosion, improves the safety of a charged crushing process, improves the safety of feeding between the crushing device and the pyrolysis furnace, and improves the safety of a pyrolysis process.
Drawings
Fig. 1 is a schematic structural diagram of a charged pretreatment system for waste lithium batteries according to the present invention.
In the figure: 1. a crushing device; 11. a first air inlet; 2. a pyrolysis furnace; 21. a second air inlet; 22. a second exhaust port; 3. an inert gas supply device; 4. a first gas concentration detection device; 5. a second gas concentration detection device; 6. a first feeding device; 7. a weighing and metering device; 71. a third air inlet; 9. a third gas concentration detection means; 10. a feeding device; 20. a cooling device; 30. and a second feeding device.
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.
Referring to fig. 1, there is shown an electrified pretreatment system for waste lithium batteries according to a preferred embodiment of the present invention, which includes a crushing device 1, a pyrolysis furnace 2, an inert gas supply device 3, a first gas concentration detection device 4, a second gas concentration detection device 5, and a controller (not shown in the figure);
the crushing device 1 is used for crushing and decomposing the charged waste lithium battery to obtain a mixture of a metal shell, pole powder, a diaphragm and electrolyte, and the crushing device 1 is provided with a crushing cavity, a first air inlet 11 and a first air outlet which are communicated with the crushing cavity;
a feed inlet of the pyrolysis furnace 2 is communicated with a discharge outlet of the crushing device 1, the pyrolysis furnace 2 is used for pyrolyzing the diaphragm and the electrolyte in the mixture obtained after crushing and decomposing by the crushing device 1, so that the diaphragm is carbonized to form powder and the electrolyte is gasified to form organic waste gas, and the pyrolysis furnace 2 is provided with a pyrolysis cavity, and a second air inlet 21 and a second air outlet 22 which are communicated with the pyrolysis cavity;
wherein, the feed inlet and the discharge outlet of the crushing device 1 and the feed inlet and the discharge outlet of the pyrolysis furnace 2 are respectively provided with a valve which is used for controlling the respective opening or closing and is controlled by a controller, the first air inlet 11 and the second air inlet 21 are both communicated with the inert gas supply device 3, and the first exhaust port and the second exhaust port 22 are both communicated with an external waste gas treatment system;
the first gas concentration detection device 4 is arranged on the crushing device 1 and is used for detecting the concentration of oxygen or inert gas in the crushing cavity;
the second gas concentration detection device 5 is arranged on the pyrolysis furnace 2 and is used for detecting the concentration of oxygen or inert gas in the pyrolysis cavity;
the controller is used for controlling the actions of the crushing device 1, the pyrolysis furnace 2 and the inert gas supply device 3 according to the feedback information of the first gas concentration detection device 4 and the second gas concentration detection device 5.
The working principle of the electrified pretreatment system of the waste lithium battery is as follows:
before the charged waste lithium battery is crushed, the inert gas supply device 3 is started to respectively inject inert gas into the crushing cavity and the pyrolysis cavity, when the inert gas is injected, air in the crushing cavity and the pyrolysis cavity is exhausted to the outside through corresponding exhaust ports, then whether the concentration of oxygen or inert gas in the crushing cavity reaches a set standard or not is detected in real time through the first gas concentration detection device 4, and whether the concentration of oxygen or inert gas in the pyrolysis cavity reaches the set standard or not is detected in real time through the second gas concentration detection device 5, if the concentration of oxygen or inert gas in the crushing cavity and the pyrolysis cavity does not reach the set standard or not, the controller controls to increase the supply flow rate of inert gas of the inert gas supply device 3, so that the concentration of oxygen in the crushing cavity and the concentration of oxygen in the pyrolysis cavity both can quickly reach the set standard, then the controller controls the crushing device 1 to be started, the charged waste lithium battery in the crushing cavity is ensured to be safely crushed and decomposed, explosion is avoided in the crushing process, in addition, because the crushing cavity and the charged waste lithium battery is conveyed to the discharge port of the crushed material, and the crushed mixture can be safely recovered through the exhaust port of the sieving system, and the waste gas which is recovered, and the waste gas can be safely treated through the sieving system, and the waste gas which is recovered from the sieving system, and is recovered.
The charged pretreatment system for the waste lithium batteries can avoid explosion, improves the safety of a charged crushing process, improves the safety of feeding between the crushing device 1 and the pyrolysis furnace 2, and improves the safety of a pyrolysis process.
Referring to fig. 1, in the present embodiment, the second gas concentration detection means 5 is close to the second exhaust port 22, so that the second gas concentration detection means 5 can detect the concentration of oxygen or inert gas near the second exhaust port 22, the detection accuracy is higher, and the safety is also higher.
Specifically, referring to fig. 1, the feed inlet and the second exhaust port 22 of the pyrolysis furnace 2 are located at the top of the pyrolysis furnace 2, the discharge outlet and the second air inlet 21 of the pyrolysis furnace 2 are both located at the bottom of the pyrolysis furnace 2, thus, when injecting inert gas into the pyrolysis cavity, the inert gas flows from the discharge section to the feed section of the pyrolysis furnace 2 automatically under the action of temperature difference in the pyrolysis cavity, so that the inert gas can fill the whole pyrolysis cavity quickly, and simultaneously, along with the injection of the inert gas, the air in the pyrolysis cavity is discharged quickly, so that the oxygen or inert gas concentration in the pyrolysis cavity can be adjusted quickly to a set standard, and in addition, after pyrolysis, the organic waste gas generated by pyrolysis can also be discharged through the second exhaust port 22 under the pushing of the inert gas, so circulation can always ensure the safety of pyrolysis.
Referring to fig. 1, in this embodiment, in order to facilitate installation of the system, the crushing device 1 and the pyrolysis furnace 2 are sequentially arranged in a horizontal direction, a discharge port of the crushing device 1 is located at the bottom of the crushing device 1, a first feeding device 6 controlled by a controller to operate is arranged between the discharge port of the crushing device 1 and a feed port of the pyrolysis furnace 2, a conveying channel which is arranged in a closed manner and used for allowing a mixture crushed and decomposed by the crushing device 1 to pass through is arranged on the first feeding device 6, and the conveying channel is also communicated with the inert gas supply device 3 to ensure safe feeding. Through the structure, the mixture crushed and decomposed by the crushing device 1 can fall to the first feeding device 6 under the action of self gravity and is safely conveyed to the pyrolysis furnace 2 through the first feeding device 6, so that the explosion in the feeding process is avoided, and the feeding safety is ensured.
In other embodiments, the crushing device 1 and the pyrolysis furnace 2 can be arranged one by one from top to bottom along the height direction of the system, and the discharge port of the crushing device 1 is located above the feed port of the pyrolysis furnace 2, so that the mixture crushed and decomposed by the crushing device 1 can directly fall into the pyrolysis furnace 2 by gravity, the arrangement of the first feeding device 6 can be omitted, and the overall height of the system is too large and inconvenient to install.
In this embodiment, first material feeding unit 6 specifically is scraper conveyor, and scraper conveyor has the advantage that can carry out the stable transport of big elevation to cubic metal casing and utmost point powder and changes the closed setting that realizes transfer passage more easily, therefore, only needs to set up a scraper conveyor and can realize carrying the mixture from breaker 1 to pyrolysis oven 2, can simplify the structure to reduce cost.
Of course, in other embodiments, the first feeding device 6 may specifically adopt a bucket elevator, an air feeder, and the like, but is not limited thereto.
In order to realize real-time statistics on the treatment capacity of the waste lithium batteries, referring to fig. 1, the system for the electrified pretreatment of the waste lithium batteries further comprises a weighing and metering device 7 for weighing and metering the waste lithium batteries before entering the crushing device 1, a valve for controlling the waste lithium batteries to be opened or closed and controlled by a controller is also arranged on a feed inlet of the weighing and metering device 7, a discharge outlet of the weighing and metering device 7 is communicated with the feed inlet of the crushing device 1, wherein a weighing and metering cavity, a third gas concentration detection device 9, a third gas inlet 71 and a third gas outlet which are communicated with the weighing and metering cavity are also arranged on the weighing and metering device 7;
the third air inlet 71 is communicated with the inert gas supply device 3, the third air outlet is communicated with an external waste gas treatment system, the third gas concentration detection device 9 is used for detecting the concentration of oxygen or inert gas in the weighing and metering cavity, and the controller is also used for controlling the crushing device 1, the pyrolysis furnace 2 and the inert gas supply device 3 to act according to feedback information of the third gas concentration detection device 9. Through the linkage setting of third gas concentration detection device 9, inert gas feeding device 3 and controller, can make the oxygen or the inert gas concentration in the weighing measurement intracavity reach the settlement standard after old and useless lithium cell gets into the weighing measurement intracavity, ensure can not destroy the inert gas environmental protection in the broken intracavity after old and useless lithium cell gets into breaker 1 to make this electrified pretreatment system of old and useless lithium cell can high-efficient operation.
Referring to fig. 1, in order to realize automatic feeding, the system for the charged pretreatment of the waste lithium batteries further comprises a feeding device 10 which is communicated with the feeding hole of the weighing and metering device 7 and is controlled by a controller to act.
Particularly, weighing and metering device 7 and breaker 1 set up according to the preface from top to bottom, and weighing and metering device 7's discharge gate is located breaker 1's feed inlet top, makes this waste lithium battery's electrified pretreatment system structure compacter, and when area is littleer, still can make the waste lithium battery after the weighing and metering drop to breaker 1 under self action of gravity, realizes automatic blanking, need not additionally set up material feeding unit, therefore can simplify this waste lithium battery's electrified pretreatment system's structure and reduce cost.
Specifically, in the present embodiment, the first gas concentration detection device 4 and the third gas concentration detection device 9 are both oxygen concentration detection devices, and the second gas concentration detection device 5 is an inert gas concentration detection device. So, through the oxygen concentration in oxygen concentration detection device direct detection broken chamber and the weighing measurement intracavity, can audio-visually feed back out broken chamber and the oxygen content (oxygen and explosion are relevant) of weighing measurement intracavity, need not convert, make the control principle of controller simpler, and through the inert gas concentration of inert gas concentration detection device direct detection pyrolysis intracavity, one can directly perceivedly feed back the inert gas content of pyrolysis intracavity, need not convert, make the control principle of controller simpler, two come can reach the purpose of feeding back whether normal operating of inert gas feeding device 3 through the inert gas content of real-time detection pyrolysis intracavity, so that in time overhaul inert gas feeding device 3, ensure the safe operation of system, the reliability is higher.
Specifically, in the embodiment, the inert gas is nitrogen which is more easily available and has lower cost, so that the operation cost of the charged pretreatment system of the waste lithium battery is reduced. Of course, in other embodiments, the inert gas may also be helium, neon, or the like.
Referring to fig. 1, in the present embodiment, the discharge port of the pyrolysis furnace 2 is communicated with a cooling device 20 for cooling the metal shell and the powder after the pyrolysis treatment, and the cooling device 20 is communicated with a second feeding device 30 for conveying the cooled metal shell and the powder.
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. The charged pretreatment system of the waste lithium battery is characterized by comprising a crushing device, a pyrolysis furnace, an inert gas supply device, a first gas concentration detection device, a second gas concentration detection device and a controller;
the crushing device is provided with a crushing cavity, a first air inlet and a first air outlet which are communicated with the crushing cavity;
a feed port of the pyrolysis furnace is communicated with a discharge port of the crushing device, and the pyrolysis furnace is provided with a pyrolysis cavity, a second air inlet and a second air outlet which are communicated with the pyrolysis cavity;
valves which are used for controlling the opening or the closing of the feeding hole and the discharging hole of the crushing device and the feeding hole and the discharging hole of the pyrolysis furnace are arranged on the feeding hole and the discharging hole of the crushing device and are controlled by the controller, the first air inlet and the second air inlet are both communicated with the inert gas supply device, and the first air outlet and the second air outlet are both communicated with an external waste gas treatment system;
the first gas concentration detection device is arranged on the crushing device and is used for detecting the concentration of oxygen or inert gas in the crushing cavity;
the second gas concentration detection device is arranged on the pyrolysis furnace and is used for detecting the concentration of oxygen or inert gas in the pyrolysis cavity;
the controller is used for controlling the actions of the crushing device, the pyrolysis furnace and the inert gas supply device according to the feedback information of the first gas concentration detection device and the second gas concentration detection device.
2. The charged pretreatment system for waste lithium batteries according to claim 1, wherein said second gas concentration detection means is located near said second gas outlet.
3. The charged pretreatment system for waste lithium batteries according to claim 1, wherein the feed inlet of the pyrolysis furnace and the second air outlet are both located at the top of the pyrolysis furnace, and the discharge outlet of the pyrolysis furnace and the second air inlet are both located at the bottom of the pyrolysis furnace.
4. The charged pretreatment system for waste lithium batteries according to claim 3, wherein the crushing device and the pyrolysis furnace are sequentially arranged in a horizontal direction, the discharge port of the crushing device is located at the bottom of the crushing device, a first feeding device controlled by the controller to operate is arranged between the discharge port of the crushing device and the feed port of the pyrolysis furnace, the first feeding device is provided with a conveying channel which is arranged in a closed manner and is used for allowing a mixture crushed and decomposed by the crushing device to pass through, and the conveying channel is also communicated with the inert gas supply device.
5. The charged pretreatment system for waste lithium batteries according to claim 4, wherein the first feeding device is a scraper conveyor.
6. The system for the charged pretreatment of waste lithium batteries according to claim 1, wherein said first gas concentration detection means is an oxygen gas concentration detection means, and said second gas concentration detection means is an inert gas detection means.
7. The charged pretreatment system for waste lithium batteries according to claim 1, further comprising:
the weighing and metering device is provided with a valve which is used for controlling the opening or closing of the weighing and metering device and is controlled by the controller, a discharge hole of the weighing and metering device is communicated with the feeding hole of the crushing device and is used for weighing and metering the waste lithium battery before entering the crushing device, and the weighing and metering device is provided with a weighing and metering cavity, a third gas concentration detection device, a third gas inlet and a third gas outlet which are communicated with the weighing and metering cavity;
the third gas inlet is communicated with the inert gas supply device, the third gas outlet is communicated with an external waste gas treatment system, the third gas concentration detection device is used for detecting the concentration of oxygen or inert gas in the weighing and metering cavity, and the controller is further used for controlling the crushing device, the pyrolysis furnace and the inert gas supply device to act according to feedback information of the third gas concentration detection device.
8. The charged pretreatment system for waste lithium batteries according to claim 7, wherein said third gas concentration detection means is an oxygen concentration detection means.
9. The system for the charged pretreatment of waste lithium batteries as recited in claim 7, further comprising a feeding device in communication with the inlet of said weighing and metering device and controlled by said controller to operate.
10. The charged pretreatment system for waste lithium batteries according to claim 7, wherein the weighing and metering device and the crushing device are arranged in sequence from top to bottom, and the discharge port of the weighing and metering device is positioned above the feed port of the crushing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210883396.3A CN115283425A (en) | 2022-07-26 | 2022-07-26 | Electrified pretreatment system of waste lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210883396.3A CN115283425A (en) | 2022-07-26 | 2022-07-26 | Electrified pretreatment system of waste lithium battery |
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| CN115283425A true CN115283425A (en) | 2022-11-04 |
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| CN202210883396.3A Pending CN115283425A (en) | 2022-07-26 | 2022-07-26 | Electrified pretreatment system of waste lithium battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116851105A (en) * | 2023-06-19 | 2023-10-10 | 广东隽诺环保科技股份有限公司 | Broken sorting facilities of old and useless lithium cell |
| WO2024108911A1 (en) * | 2022-11-21 | 2024-05-30 | 杰瑞环保科技有限公司 | Thermal desorption treatment system for waste batteries |
| WO2024114386A1 (en) * | 2022-11-29 | 2024-06-06 | 杰瑞环保科技有限公司 | Crushing and adsorbing system and method for lithium battery |
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2022
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024108911A1 (en) * | 2022-11-21 | 2024-05-30 | 杰瑞环保科技有限公司 | Thermal desorption treatment system for waste batteries |
| WO2024114386A1 (en) * | 2022-11-29 | 2024-06-06 | 杰瑞环保科技有限公司 | Crushing and adsorbing system and method for lithium battery |
| CN116851105A (en) * | 2023-06-19 | 2023-10-10 | 广东隽诺环保科技股份有限公司 | Broken sorting facilities of old and useless lithium cell |
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