CN214477632U - Liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system - Google Patents
Liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system Download PDFInfo
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- CN214477632U CN214477632U CN202120916209.8U CN202120916209U CN214477632U CN 214477632 U CN214477632 U CN 214477632U CN 202120916209 U CN202120916209 U CN 202120916209U CN 214477632 U CN214477632 U CN 214477632U
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- 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
Abstract
The utility model discloses a liquid nitrogen freezing and crushing and low-temperature roasting treatment waste lithium ion battery system, which comprises a belt conveyer, wherein the belt conveyer is a transportation device for waste batteries, and one section of a belt passes through a liquid nitrogen refrigerator; the waste battery conveying belt conveyor comprises a liquid nitrogen refrigerator, a weighing table and a conveying belt, wherein liquid nitrogen is sprayed out of the liquid nitrogen refrigerator to freeze a waste battery conveyed on the conveying belt conveyor, a first waste gas collecting port is formed in the liquid nitrogen refrigerator, and the weighing table is installed on the outer side of the liquid nitrogen refrigerator; and the liquid nitrogen tank is arranged on the weighing platform. This useless lithium ion battery system is handled in freezing breakage of liquid nitrogen and low temperature calcination adopts the design of novelty, and electrified lithium ion battery can be handled to liquid nitrogen freezing breakage and the useless lithium ion battery system is handled in the low temperature calcination, does not worry the danger of firing explosion, and the safety degree is high, and the electrolyte in the broken material of battery is clear away completely through the low temperature calcination technique of rotary kiln, and the air safety of emission is harmless, and the reasonable high efficiency of entire system process structure.
Description
Technical Field
The utility model relates to a lithium ion battery retrieves technical field, specifically is a liquid nitrogen freezing breakage and low temperature calcination handle useless lithium ion battery system.
Background
In the waste battery recovery processing field, the mode of decomposing the lithium battery is mainly mechanical crushing, and because the charged problem of the waste battery, the charged battery enters the crusher to be crushed, a battery short circuit can occur, and the heat is rapidly released in a short time, so that the battery is combusted and exploded. Meanwhile, organic volatile matters of electrolyte in the battery are adhered to the broken materials of the battery and cannot be completely treated, so that the environmental pollution is easily caused, and the problem of how to safely and harmlessly recycle the lithium battery is solved at present.
According to a full-automatic lithium ion battery recovery system that patent CN207572492U disclosed, including the first rubbing crusher that connects gradually, air current sorter, conveyer belt, high energy shearing rubbing crusher and shale shaker powder ware, be provided with the magnet separator on the conveyer belt. The system also includes an exhaust gas treatment unit in communication with the primary crusher and the high energy shear crusher. The above structure can not eliminate the burning and explosion problems when the waste lithium battery is broken in an electrified way, and can not solve the problem of removing the organic volatile matters of the electrolyte adhered in the broken battery material, so that the problem of environmental pollution of the organic volatile matters of the electrolyte can not be solved.
In order to solve the problems, innovative design is urgently needed on the basis of the structure of the original lithium ion battery recovery equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a freezing breakage of liquid nitrogen and low temperature calcination handle useless lithium ion battery system to solve the burning and the explosion problem when the electrified breakage of the old and useless lithium cell of the unable elimination that provides in the above-mentioned background art, also unable solution in the broken battery material the solution organic volatile substance that adheres get rid of the problem, thereby the problem of the environmental pollution problem of the organic volatile substance of electrolyte can't be solved.
In order to achieve the above object, the utility model provides a following technical scheme: a liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system comprises:
the conveying belt conveyor is used for conveying waste batteries, and one section of the belt passes through a liquid nitrogen refrigerator;
the waste battery conveying belt conveyor comprises a liquid nitrogen refrigerator, a weighing table and a conveying belt, wherein liquid nitrogen is sprayed out of the liquid nitrogen refrigerator to freeze a waste battery conveyed on the conveying belt conveyor, a first waste gas collecting port is formed in the liquid nitrogen refrigerator, and the weighing table is installed on the outer side of the liquid nitrogen refrigerator;
the liquid nitrogen tank is arranged on the weighing platform, and liquid nitrogen in the liquid nitrogen tank enters the liquid nitrogen refrigerator through a pipeline;
the double-shaft crusher is arranged at the tail end of the conveyor belt and is provided with a crusher waste gas collecting port, and a discharge port at the lower side of the double-shaft crusher is connected with a feed port at the upper side of the low-temperature roasting rotary kiln;
the front end of a feeding port of the low-temperature roasting rotary kiln is provided with a second waste gas collecting port, and the treated crushed materials enter a subsequent sorting and recycling process through a discharge port of the rotary kiln;
the pulse dust collector is a bag type dust collector and is used for collecting dust generated by the system, and an air inlet pipeline is arranged on the outer side of the pulse dust collector;
the activated carbon adsorption box is internally provided with activated carbon for adsorbing harmful gases in the waste gas;
and the negative pressure exhaust fan is arranged at the tail part of the activated carbon adsorption box and generates negative pressure to suck out dust and waste gas in the system.
Preferably, the belt conveyor is controlled by a variable frequency motor, and the freezing time of the battery in the liquid nitrogen freezer is controlled by controlling the conveying speed of the belt.
Preferably, the liquid nitrogen tank is arranged on the weighing platform, the weighing platform can record the weight of the liquid nitrogen tank in real time, the weight of the liquid nitrogen in the liquid nitrogen tank is known, and the rotating speed of the conveyor belt is controlled according to the weight of the liquid nitrogen, so that the freezing time of the waste battery in the liquid nitrogen refrigerator is controlled.
Preferably, the weighing platform is arranged on the base, and the diagonals of the two weighing sensors are arranged on the lower part of the weighing platform for weighing.
Preferably, the double-shaft crusher is arranged at the upper part of the low-temperature roasting rotary kiln at the tail part of the conveyor belt, the frozen batteries are directly and rapidly crushed by the double-shaft crusher, and crushed batteries enter the low-temperature roasting rotary kiln to be treated under the action of gravity.
Preferably, the low-temperature roasting rotary kiln is arranged at the bottom of the double-shaft crusher, crushed battery pieces obtained by the double-shaft crusher are directly roasted, and electrolyte, a diaphragm and the like in the crushed battery pieces are completely combusted.
Preferably, the front section of the pulse dust collector is connected with an air inlet pipeline, and the air inlet pipeline is connected with a first waste gas collecting port, a crusher waste gas collecting port and a second waste gas collecting port to collect dust.
Preferably, the activated carbon adsorption tank is installed at the front part of the rear negative pressure exhaust fan of the pulse dust collector, and is used for adsorbing the sucked waste gas and discharging clean air into the atmosphere.
Compared with the prior art, the beneficial effects of the utility model are that: the liquid nitrogen freezing crushing and low-temperature roasting waste lithium ion battery system adopts an innovative design, can treat charged lithium ion batteries without worrying about the danger of fire and explosion, has high safety degree, completely removes electrolyte in a battery crushing material through the low-temperature roasting technology of a rotary kiln, discharges safe and harmless air, and has reasonable and efficient process structure of the whole system;
1. the liquid nitrogen quickly freezes the electrolyte in the waste lithium ion battery, so that the battery loses the short-circuit discharge performance, and the battery is quickly broken and dissociated by a double-shaft crusher to reach a safe state;
2. the rotating speed of the conveyor belt is controlled by the weight of liquid nitrogen contained in the liquid nitrogen tank, so that the efficiency of the liquid nitrogen freezing battery is utilized to the maximum extent;
3. the low-temperature roasting rotary kiln finishes the combustion of the electrolyte in the crushed battery materials, and completely eliminates the harm of organic volatile matters in the electrolyte to pollute the atmosphere;
4. the negative pressure exhaust fan generates negative pressure to collect dust from the sucked waste gas and dust mixed gas through the pulse dust collector, the waste gas is adsorbed by the activated carbon adsorption box, and finally clean air is discharged to the atmosphere.
Drawings
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the three-dimensional structure of the activated carbon adsorption tank of the present invention;
FIG. 4 is a schematic view of the three-dimensional structure of the liquid nitrogen freezer of the present invention;
FIG. 5 is a schematic view of the front view structure of the double-shaft crusher of the present invention;
fig. 6 is a schematic view of the cross-sectional structure of the double-shaft crusher of the present invention.
In the figure: 1. a first exhaust gas collection port; 2. a conveyor belt; 3. a liquid nitrogen tank; 4. a double-shaft crusher; 5. a crusher exhaust gas collection port; 6. a second exhaust gas collection port; 7. roasting the rotary kiln at low temperature; 8. a discharge hole of the rotary kiln; 9. a crusher feed port; 10. a weighing platform; 11. an air inlet pipeline; 12. a pulse dust collector; 13. an activated carbon adsorption tank; 14. a negative pressure exhaust fan; 15. and (4) a liquid nitrogen refrigerator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a liquid nitrogen freezing is broken and waste lithium ion battery system is handled with low temperature calcination, collects mouthful 1, transportation belt feeder 2, liquid nitrogen jar 3, biax breaker 4, breaker waste gas collection mouth 5, second waste gas collection mouth 6, low temperature calcination rotary kiln 7, rotary kiln discharge gate 8, breaker feed inlet 9, weighing platform 10, intake stack 11, pulse dust collector 12, active carbon adsorption tank 13, negative pressure air exhauster 14 and liquid nitrogen refrigerator 15 including first waste gas.
A conveying belt conveyor 2, wherein the conveying belt conveyor 2 is used for conveying waste batteries, and one section of the belt passes through a liquid nitrogen refrigerator 15;
a liquid nitrogen refrigerator 15, wherein liquid nitrogen is sprayed out of the liquid nitrogen refrigerator 15 to refrigerate the waste batteries transported on the conveyor belt 2, the liquid nitrogen refrigerator 15 is provided with a first waste gas collecting port 1, and a weighing platform 10 is arranged outside the liquid nitrogen refrigerator 15;
the liquid nitrogen container 3 is arranged on the weighing platform 10, and liquid nitrogen in the liquid nitrogen container 3 enters the liquid nitrogen refrigerator 15 through a pipeline;
the double-shaft crusher 4 is arranged at the tail end of the conveyor belt 2, a crusher waste gas collecting port 5 is formed in the double-shaft crusher 4, and a discharge port on the lower side of the double-shaft crusher 4 is connected with a feed port on the upper side of the low-temperature roasting rotary kiln 7;
a second waste gas collecting port 6 is formed in the front end of a feeding port of the low-temperature roasting rotary kiln 7, and the treated crushed materials enter a subsequent sorting and recycling process through a rotary kiln discharging port 8;
the pulse dust collector 12, the pulse dust collector 12 is a bag type dust collector, collect the dust that the system produces, there are air inlet ducts 11 outside it;
the activated carbon adsorption tank 13 is internally provided with activated carbon, and harmful gases in the waste gas are adsorbed and treated;
and a negative pressure exhaust fan 14, wherein the negative pressure exhaust fan 14 is arranged at the tail part of the activated carbon adsorption box 13, and generates negative pressure to suck out dust and waste gas in the system.
The belt conveyor 2 is controlled by a variable frequency motor, and the freezing time of the battery in the liquid nitrogen freezer 15 is controlled by controlling the conveying speed of the belt, so that the automation degree is higher.
The weighing platform 10 is arranged on the base, and the diagonals of the two weighing sensors are arranged on the lower part of the weighing platform 10 for weighing.
The double-shaft crusher 4 is arranged on the upper portion of the low-temperature roasting rotary kiln 7 at the tail portion of the conveyor belt 2, the frozen batteries are directly and rapidly crushed by the double-shaft crusher 4, and crushed batteries enter the low-temperature roasting rotary kiln 7 under the action of gravity to be processed. The low-temperature roasting rotary kiln 7 is arranged at the bottom of the double-shaft crusher 4, the crushed battery materials crushed by the double-shaft crusher 4 are directly roasted, and electrolyte, a diaphragm and the like in the crushed battery materials are thoroughly combusted.
The anterior segment of pulse dust collector 12 is connected with air inlet pipe 11, and air inlet pipe 11 links to each other with first waste gas collection mouth 1, breaker waste gas collection mouth 5, second waste gas collection mouth 6, carries out the dust and collects. The activated carbon adsorption box 13 is installed in the front of the negative pressure exhaust fan 14 at the rear of the pulse dust collector 12, and adsorbs the exhaust gas and discharges clean air into the atmosphere.
The working principle is as follows: when the liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system is used, according to the figures 1-6, the device is firstly placed at a position needing to work, a belt conveyor 2 is used for transporting waste lithium ion batteries, electrolyte inside the batteries is frozen by liquid nitrogen to lose the activity of short-circuit discharge, the batteries enter a double-shaft crusher 4 to be crushed under the condition that the batteries are not discharged, the danger of short-circuit combustion and explosion can not occur, crushed battery crushed materials directly enter a low-temperature roasting rotary kiln 7 to be roasted at low temperature, a diaphragm and the electrolyte in the crushed battery materials are combusted, waste gas enters a pulse dust collector 12 and an activated carbon adsorption box 13 through a second waste gas collecting port 6 to be treated, discharged air meets the requirement of environmental protection, the harm of volatile matters of the electrolyte in crushing to the environment is reduced, the roasted materials enter a subsequent sorting process and are further treated by a negative pressure exhaust fan 14 and a liquid nitrogen refrigerator 15, the overall practicability is increased.
Those not described in detail in this specification are within the skill of the art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a liquid nitrogen freezing breakage and low temperature calcination handle useless lithium ion battery system which characterized in that includes:
the conveying belt conveyor (2) is used for conveying waste batteries, and one section of the belt passes through a liquid nitrogen refrigerator (15);
a liquid nitrogen refrigerator (15), wherein liquid nitrogen is sprayed out of the liquid nitrogen refrigerator (15) to refrigerate the waste batteries transported on the conveyor belt (2), the liquid nitrogen refrigerator (15) is provided with a first waste gas collecting port (1), and a weighing table (10) is arranged outside the liquid nitrogen refrigerator (15);
the liquid nitrogen tank (3) is arranged on the weighing platform (10), and liquid nitrogen in the liquid nitrogen tank (3) enters a liquid nitrogen refrigerator (15) through a pipeline;
the double-shaft crusher (4) is arranged at the tail end of the conveying belt conveyor (2), a crusher waste gas collecting port (5) is formed in the double-shaft crusher (4), and a discharge port on the lower side of the double-shaft crusher (4) is connected with a feed port on the upper side of the low-temperature roasting rotary kiln (7);
the front end of a feeding port of the low-temperature roasting rotary kiln (7) is provided with a second waste gas collecting port (6), and the treated crushed materials enter a subsequent sorting and recycling process through a discharging port (8);
the pulse dust collector (12), the said pulse dust collector (12) is a bag collector, collect the dust that the system produces, its outside has air inlet ducts (11);
the activated carbon adsorption tank (13), the activated carbon is installed in the activated carbon adsorption tank (13), and harmful gases in the waste gas are adsorbed and treated;
and the negative pressure exhaust fan (14), the negative pressure exhaust fan (14) is arranged at the tail part of the activated carbon adsorption box (13), and negative pressure is generated to suck out dust and waste gas in the system.
2. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the belt conveyor (2) is controlled by a variable frequency motor, and the freezing time of the battery in the liquid nitrogen freezer (15) is controlled by controlling the conveying speed of the belt.
3. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the liquid nitrogen tank (3) is installed on the weighing platform (10), the weighing platform (10) can record the weight of the liquid nitrogen tank (3) in real time, the weight of liquid nitrogen in the liquid nitrogen tank (3) is known, and the rotating speed of the conveying belt conveyor (2) is controlled according to the weight of the liquid nitrogen, so that the freezing time of the waste battery in the liquid nitrogen refrigerator (15) is controlled.
4. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the weighing platform (10) is arranged on the base, and the diagonals of the two weighing sensors are arranged on the lower part of the weighing platform (10) for weighing.
5. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the double-shaft crusher (4) is installed on the upper portion of the low-temperature roasting rotary kiln (7) at the tail of the conveyor belt (2), the frozen batteries are directly and rapidly crushed by the double-shaft crusher (4), and crushed batteries enter the low-temperature roasting rotary kiln (7) under the action of gravity to be processed.
6. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the low-temperature roasting rotary kiln (7) is arranged at the bottom of the double-shaft crusher (4), crushed battery fragments of the double-shaft crusher (4) are directly roasted, and electrolyte, diaphragms and the like in the crushed battery fragments are thoroughly burnt.
7. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the front section of the pulse dust collector (12) is connected with an air inlet pipeline (11), and the air inlet pipeline (11) is connected with a first waste gas collecting port (1), a crusher waste gas collecting port (5) and a second waste gas collecting port (6) to collect dust.
8. The system for treating the waste lithium ion battery by liquid nitrogen freezing and crushing and low-temperature roasting as claimed in claim 1, wherein: the activated carbon adsorption box (13) is arranged at the front part of a negative pressure exhaust fan (14) at the rear part of the pulse dust collector (12) and used for carrying out adsorption treatment on the sucked waste gas, and clean air is discharged into the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916209.8U CN214477632U (en) | 2021-04-29 | 2021-04-29 | Liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916209.8U CN214477632U (en) | 2021-04-29 | 2021-04-29 | Liquid nitrogen freezing crushing and low-temperature roasting treatment waste lithium ion battery system |
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| CN214477632U true CN214477632U (en) | 2021-10-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602622A (en) * | 2022-03-01 | 2022-06-10 | 江西睿达新能源科技有限公司 | Broken low temperature crushing equipment of abandonment lithium cell |
| WO2024051100A1 (en) * | 2022-09-05 | 2024-03-14 | 广东邦普循环科技有限公司 | Battery pack disassembling method and device |
-
2021
- 2021-04-29 CN CN202120916209.8U patent/CN214477632U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602622A (en) * | 2022-03-01 | 2022-06-10 | 江西睿达新能源科技有限公司 | Broken low temperature crushing equipment of abandonment lithium cell |
| WO2024051100A1 (en) * | 2022-09-05 | 2024-03-14 | 广东邦普循环科技有限公司 | Battery pack disassembling method and device |
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