CN115548500A - Absorption treatment equipment for crushing and high-temperature treatment of waste gas of lithium iron phosphate battery - Google Patents

Abstract

The invention discloses an absorption treatment device for crushing lithium iron phosphate batteries and treating waste gas at high temperature, which relates to the technical field of absorption treatment devices and comprises a crushing box body, wherein two crushing roller shafts and two screening barrels are respectively arranged in the crushing box body from top to bottom, the two crushing roller shafts are distributed in a mirror symmetry manner, and one ends of the crushing roller shafts and one ends of the screening barrels are rotatably connected on the inner wall of the crushing box body. When carrying out recovery processing to the lithium iron phosphate battery, at first in crushing process, can reject most useless material wherein, including carbon dust, plastic material to in subsequent processing technology, carry out high temperature treatment to the waste gas that produces among the chemical reaction process, when carrying out high temperature treatment to waste gas, can real time control waste gas flow, guarantee can eliminate the pollution problem of waste gas by at utmost.

Description

Absorption treatment equipment for crushing lithium iron phosphate battery and treating waste gas at high temperature

Technical Field

The invention relates to the technical field of absorption treatment equipment, in particular to absorption treatment equipment for crushing a lithium iron phosphate battery and treating waste gas at high temperature.

Background

The lithium iron phosphate battery is a lithium iron phosphate lithium ion battery using lithium iron phosphate (LiFePO) ₄ ) The lithium ion battery using carbon as a cathode material has a cell rated voltage of 3.2V and a charge cut-off voltage of 3.6V to 3.65V. The lithium battery pack is most environment-friendly, has the highest service life, the highest safety and the highest discharge rate in all the lithium battery packs at present.

After the lithium iron phosphate battery reaches the life critical point, in order to reduce pollution and recover resources, the lithium iron phosphate battery can be uniformly recycled, the lithium iron phosphate battery is firstly crushed in batches, different chemical agents are required to be added in the crushing process, valuable metals are separated out through chemical reaction, and then the obtained materials are screened and collected.

In the above process, the material obtained after crushing includes: carbon powder, lithium iron phosphate and metal chips or plastic chips, and the main utility value of the lithium iron phosphate battery is the anode material (LiFePO) ₄ ) The obtained positive electrode material is subjected to reaction, residue filtration, drying and other steps by a wet treatment process to obtain lithium element, but carbon powder, plastic fragments and chemical agents are not mixed, the chemical reaction efficiency can be directly influenced by the raw materials doped with impurities, in addition, certain pollution can be caused to the surrounding environment by waste gas (acid/alkaline gas) generated during the reaction, and particularly, the body health of operators can be influenced by toxic gas possibly doped in the waste gas.

In view of the above technical problems, the present application proposes a solution.

Disclosure of Invention

The invention aims to provide a device for crushing lithium iron phosphate batteries and absorbing and treating waste gas at high temperature, which can remove most useless materials including carbon powder and plastic materials in the crushing process when the lithium iron phosphate batteries are recycled, can carry out high-temperature treatment on the waste gas generated in the chemical reaction process in the subsequent treatment process, can control the flow of the waste gas in real time while carrying out high-temperature treatment on the waste gas, ensures that the waste gas fully reacts in a high-temperature environment, and can eliminate the pollution problem of the waste gas to the greatest extent.

The purpose of the invention can be realized by the following technical scheme: including broken box, broken box is inside to be provided with broken roller and a screening section of thick bamboo respectively along the direction from the top down, the quantity that sets up of broken roller is two, and two broken roller is mirror symmetry and distributes, and the one end of broken roller and screening section of thick bamboo is connected for rotating on the inner wall position of broken box, the other end of broken roller and screening section of thick bamboo run through broken box and with broken box between be connected for rotating, broken box outside is provided with first drive structure and second drive structure, first drive structure and second drive structure are connected with the transmission end of broken roller and screening section of thick bamboo respectively, a plurality of water leaking mouths have been seted up on the circumference outer wall of screening section of thick bamboo, and the screening section of thick bamboo corresponds two broken roller cuts and has seted up the hourglass material breach in the position, broken box outside is provided with water circulating system, water circulating system includes one-level suction tube, second grade suction tube, tertiary suction tube, one-level suction tube, one end extension respectively to the one-level screening section of thick bamboo one end sealing block is connected in the sealed position of screening section of thick bamboo, the movable block is connected in the sealed box in the one-level of screening section of thick bamboo.

Further setting the following steps: the upper surface positions of the primary screening box, the secondary screening box and the tertiary screening box are all provided with first water suction pumps, the tail ends of the primary suction pipe, the secondary suction pipe and the tertiary suction pipe are respectively communicated with the inlet ends of the first water suction pumps, and the outlet end of each first water suction pump is respectively communicated with the upper end spaces of the interiors of the upper surface positions of the primary screening box, the secondary screening box and the tertiary screening box;

be provided with three second suction pump on the circulation case that deposits, every the entering of second suction pump is served and is installed the feed liquor pipe, and the discharge end and the inside intercommunication of circulation case that deposits of second suction pump, every feed liquor pipe end communicate with between the inside lower extreme space of one-level screening case, second grade screening case and tertiary screening case respectively.

Further setting the following steps: the filter plates are fixedly mounted inside the primary screening box, the secondary screening box and the tertiary screening box, the second electromagnetic valve is arranged on the primary suction pipe, the third electromagnetic valve is arranged on the liquid inlet pipe between the primary screening box and the precipitation circulation box, and a liquid injection end is arranged at one end of the upper surface of the primary screening box.

Further setting the following steps: the suction nozzle is all installed to the circumference outer wall part that one-level suction tube and second grade suction tube are located screening section of thick bamboo inside, every the opening direction of suction nozzle is down, be symmetric distribution fixed mounting on the sealed movable block and stir the stick.

Further setting the following steps: the utility model discloses a broken box, including deposit circulation case, deposit circulation case upper end and deposit circulation incasement portion intercommunication, the input of booster pump and deposit circulation incasement portion intercommunication, and the output of booster pump installs back the liquid pipe, install a plurality of shower heads on the inside upper end position of broken box, communicate between liquid pipe and the shower head.

Further setting the following steps: the liquid inlet pipe between the first-stage screening box and the precipitation circulation box is connected with a liquid separating pipe, and the liquid separating pipe is connected with a first electromagnetic valve and a third water suction pump respectively.

Further setting as follows: including setting up the aeration heating pipe on one side position of one-level screening case, aeration heating pipe circumference surface mounting has a plurality of flame guns, and aeration heating pipe installs blast pipe and intake pipe respectively, communicate between intake pipe one end and the inside upper end space of one-level screening case.

Further setting the following steps: all fixed mounting has electronic telescoping cylinder on the aeration heating pipe both ends position, the transmission shaft of electronic telescoping cylinder runs through to aeration heating pipe's inside, and the end of electronic telescoping cylinder transmission shaft installs the ceramic piston piece, ceramic piston piece sliding connection on aeration heating pipe inner wall.

The method comprises the following steps of:

the method comprises the following steps: the first driving structure drives the two crushing roller shafts to crush the batch of waste lithium iron phosphate batteries, the second driving structure drives the screening cylinder to do periodic reciprocating rotary motion, and the rotation angle of the screening cylinder does not exceed ninety degrees each time;

step two: the raw materials obtained after crushing enter the screening cylinder along the leakage gap, when the lithium iron phosphate battery is crushed, purified water is continuously injected from the spray header, and the liquid level of the purified water in the crushing box body is higher than the setting height of the secondary suction pipe in the screening cylinder;

step three: the first solenoid valve is closed and the second and third solenoid valves are opened. Simultaneously starting the three first water suction pumps, pumping the metal raw materials which are deposited in the screening cylinder and cannot be discharged from the water leakage port into the primary screening box through the primary suction pipe, enabling plastic materials existing in the raw materials to float above the liquid level and be pumped into the secondary screening box through the secondary suction pipe, breaking carbon rods in the raw materials by stirring rods in the rotation process of the screening cylinder, falling down along the water leakage port and being pumped into the tertiary screening pipe through the tertiary suction pipe;

step four: and plastic cement, carbon rods and valuable metal materials in different components in the raw materials respectively fall into the corresponding screening boxes, are filtered by the filtering plates, finally, each second water suction pump is started, filtered water is pumped into the precipitation circulation box, the booster pump is started again, and liquid in the precipitation circulation box enters the crushing box body along the liquid return pipe-spray header.

In the exhaust gas treatment process, the method comprises the following steps:

the method comprises the following steps: firstly, closing a second electromagnetic valve, stopping the suction action of a primary suction pipe, opening a third electromagnetic valve and a second water suction pump at a corresponding position, completely draining the moisture in the primary screening box, closing the third electromagnetic valve at the position and the second water suction pump at the corresponding position, and filling a liquid end into a port of a chemical agent into the primary screening box;

step two: the chemical reaction process between the valuable metal and the chemical agent is carried out in the primary screening box, and the generated acid/alkaline waste gas enters the aeration heating pipe along the air inlet pipe, wherein the process comprises the following steps:

: in an initial state, the ceramic piston block close to the exhaust end blocks the exhaust end, the other ceramic piston block cannot block the air inlet end and is positioned on one side of the air inlet end, which is far away from the exhaust end, when acid/alkaline waste gas enters along the air inlet pipe, the electric telescopic cylinder close to the air inlet pipe is started to drive the ceramic piston block to move towards the exhaust pipe until the ceramic piston block completely blocks the air inlet pipe, and the ceramic piston block close to the exhaust pipe blocks the exhaust pipe and keeps the exhaust pipe still;

: in the process, each flame gun sprays high-temperature gas flame to carry out high-temperature burning treatment on the acid/alkali waste gas, so as to burn off harmful impurities in the acid/alkali waste gas;

: after burning for a period of time, closing the flame gun, and moving the ceramic piston block close to the exhaust pipe to the direction far away from the air inlet pipe until the exhaust pipe cannot be blocked, and moving the ceramic piston block close to the air inlet pipe to the exhaust pipe to discharge the burnt waste gas along the exhaust pipe;

: in the last part, after the part is completed, the two ceramic piston blocks are restored to the initial state by starting the electric telescopic cylinder again, and each part is circularly performed.

The invention has the following beneficial effects:

1. when carrying out crushing treatment to the old and useless lithium iron phosphate battery of batch, can sieve according to the raw and other materials kind that obtains, the kind includes: the plastic diaphragm in the battery or the plastic shell on the outer layer, the carbon rod in the battery and valuable metals with recovery values are utilized, so that the raw materials are recovered by utilizing the principle that plastic can float, then the carbon rod is smashed to be smashed into powder, so that the powder can be discharged through the water leaking port, most of the valuable metals are reserved in the screening cylinder, and the raw materials can be preliminarily screened;

2. when valuable metals are refined, the primary screening box is temporarily isolated from the water circulation system to serve as a reaction container by depending on the screening box structure of the part, waste gas generated in the chemical reaction process can enter the aeration heating pipe along the air inlet pipe to be subjected to high-temperature firing treatment, and in the air inlet process, the amount of the waste gas entering the aeration heating pipe is controlled, so that the waste gas can be fully fired.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an absorption treatment device for crushing and high-temperature treatment of waste gas of a lithium iron phosphate battery provided by the invention;

FIG. 2 is a sectional view of a crushing box component in the absorption treatment equipment for crushing and high-temperature treatment of waste gas of the lithium iron phosphate battery provided by the invention;

FIG. 3 is a sectional view of a screening barrel part in the absorption treatment equipment for crushing and high-temperature treatment of waste gas of the lithium iron phosphate battery provided by the invention;

fig. 4 is a schematic structural diagram of a water circulation system in the absorption treatment equipment for crushing and high-temperature treatment of waste gas of the lithium iron phosphate battery provided by the invention;

fig. 5 is a sectional view of a primary screening box component in the absorption treatment equipment for crushing and high-temperature treatment of waste gas of a lithium iron phosphate battery provided by the invention;

fig. 6 is a cross-sectional view of an aeration heating pipe component in the absorption treatment equipment for crushing and high-temperature treatment of waste gas of the lithium iron phosphate battery provided by the invention.

In the figure: 1. crushing the box body; 2. a first-stage screening box; 3. an aeration heating pipe; 4. a first drive structure; 5. a second drive structure; 6. a tertiary suction pipe; 7. a settling circulation box; 8. a shower head; 9. a crushing roller shaft; 10. a screening drum; 11. a water leakage port; 12. a material leakage gap; 13. a secondary suction pipe; 14. a primary suction pipe; 15. sealing the movable block; 16. a stirring rod; 17. a flame gun; 18. an electric telescopic cylinder; 19. a filter plate; 20. a first water pump; 21. a liquid injection end; 22. a second water pump; 23. a liquid inlet pipe; 24. a liquid separating pipe; 25. a first solenoid valve; 26. a third water pump; 27. a secondary screening box; 28. a third-stage screening box; 29. a second solenoid valve; 30. a ceramic piston block; 31. an exhaust pipe; 32. a third electromagnetic valve; 33. a booster pump; 34. a liquid return pipe; 35. an intake pipe.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The lithium iron phosphate battery comprises components including a plastic material, a carbon rod and valuable metals, wherein membranes of an outer layer and an inner layer of the lithium battery belong to the plastic material, and a cathode of the lithium iron phosphate battery mainly comprises the carbon rod, so that the recovery value of the carbon rod and the plastic material is not high in the crushing process, if the raw materials are doped in the valuable metals, the chemical reaction process of the valuable metals can be influenced, and if the raw materials are screened in the subsequent process, the processes can be increased, the overall operation time can be prolonged, and the following technical scheme is provided for the purposes that:

referring to fig. 1, fig. 2, fig. 3 and fig. 4, a lithium iron phosphate battery crushing apparatus and an absorption treatment apparatus for high temperature treatment of waste gas comprise a crushing box body 1, wherein a crushing roller shaft 9 and a sieving cylinder 10 are respectively arranged inside the crushing box body 1 along the direction from top to bottom, the number of the crushing roller shafts 9 is two, the two crushing roller shafts 9 are distributed in a mirror symmetry manner, one ends of the crushing roller shafts 9 and the sieving cylinder 10 are rotatably connected on the inner wall of the crushing box body 1, the other ends of the crushing roller shafts 9 and the sieving cylinder 10 penetrate through the crushing box body 1 and are rotatably connected with the crushing box body 1, a first driving structure 4 and a second driving structure 5 are arranged outside the crushing box body 1, the first driving structure 4 and the second driving structure 5 are respectively connected with the driving ends of the crushing roller shaft 9 and the sieving cylinder 10, a plurality of water leaking ports 11 are arranged on the circumferential outer wall of the sieving cylinder 10, a material leakage notch 12 is arranged on the position of the screening cylinder 10 corresponding to the two cutting surfaces of the two crushing roller shafts 9, a water circulation system is arranged outside the crushing box body 1 and comprises a first-stage suction pipe 14, a second-stage suction pipe 13, a third-stage suction pipe 6, a first-stage screening box 2, a second-stage screening box 27, a third-stage screening box 28 and a precipitation circulation box 7, one end of the third-stage suction pipe 6 is connected with the central point position of the lower side of the crushing box body 1, one ends of the first-stage suction pipe 14 and the second-stage suction pipe 13 extend into the inner position of the screening cylinder 10 respectively, a sealing movable block 15 is arranged on the opening position of one end of the screening cylinder 10, the first-stage suction pipe 14 and the second-stage suction pipe 13 are fixed on the sealing movable block 15, the sealing movable block 15 is in the opening position of the screening cylinder 10 in a rotating connection mode, and first water suction pumps 20 are arranged on the upper surface positions of the first-stage screening box 2, the second-stage screening box 27 and the third-stage screening box 28, the tail ends of the primary suction pipe 14, the secondary suction pipe 13 and the tertiary suction pipe 6 are respectively communicated with the inlet ends of the first water suction pumps 20, and the outlet end of each first water suction pump 20 is respectively communicated with the upper end spaces of the inner parts of the upper surface positions of the primary screening box 2, the secondary screening box 27 and the tertiary screening box 28;

the sedimentation circulation box 7 is provided with three second water pumps 22, a liquid inlet pipe 23 is installed at the inlet end of each second water pump 22, the discharge end of each second water pump 22 is communicated with the interior of the sedimentation circulation box 7, and the tail end of each liquid inlet pipe 23 is communicated with the lower end space of the interior of the first-stage screening box 2, the second-stage screening box 27 and the third-stage screening box 28.

The first-stage screening box 2, the second-stage screening box 27 and the third-stage screening box 28 are all fixedly provided with a filter plate 19 inside, a second electromagnetic valve 29 is arranged on the first-stage suction pipe 14, a third electromagnetic valve 32 is arranged on a liquid inlet pipe 23 between the first-stage screening box 2 and the precipitation circulation box 7, and a liquid injection end 21 is arranged at one end of the upper surface of the first-stage screening box 2.

The circumferential outer wall parts of the primary suction pipe 14 and the secondary suction pipe 13 inside the screening cylinder 10 are provided with suction nozzles, the opening direction of each suction nozzle faces downwards, and stirring rods 16 are symmetrically distributed and fixedly arranged on the sealing movable block 15.

The upper end of the precipitation circulation box 7 is provided with a booster pump 33, the input end of the booster pump 33 is communicated with the interior of the precipitation circulation box 7, the output end of the booster pump 33 is provided with a liquid return pipe 34, the upper end of the interior of the crushing box body 1 is provided with a plurality of spray headers 8, and the liquid return pipe 34 is communicated with the spray headers 8.

A liquid separating pipe 24 is connected on the liquid inlet pipe 23 between the primary screening box 2 and the precipitation circulation box 7, and a first electromagnetic valve 25 and a third water pump 26 are respectively connected on the liquid separating pipe 24.

The method comprises the following steps of:

the method comprises the following steps: the first driving structure 4 drives the two crushing roller shafts 9 to crush the batch of waste lithium iron phosphate batteries, the second driving structure 5 drives the screening cylinder 10 to do periodic reciprocating rotary motion, and the rotation angle of the screening cylinder 10 does not exceed ninety degrees each time;

step two: the raw materials obtained after crushing enter the screening cylinder 10 along the leakage gap 12, when the lithium iron phosphate battery is crushed, pure water is continuously injected from the spray header 8, and the liquid level of the pure water in the crushing box body 1 is higher than the setting height of the secondary suction pipe 13 in the screening cylinder 10;

step three: the first solenoid valve 25 is closed and the second solenoid valve 29 and the third solenoid valve 32 are opened. Simultaneously starting the three first water pumps 20, pumping the metal raw material which is deposited in the screening cylinder 10 and cannot be discharged from the water leakage port 11 into the primary screening box 2 through the primary suction pipe 14, wherein the plastic material in the raw material floats on the liquid surface and is pumped into the secondary screening box 27 through the secondary suction pipe 13, and the carbon rod in the raw material is broken by the stirring rod 16 in the rotation process of the screening cylinder 10, falls along the water leakage port 11 and is pumped into the tertiary screening pipe 28 through the tertiary suction pipe 6;

step four: the plastic, carbon rods and valuable metal materials in different components in the raw materials respectively fall into the corresponding screening boxes and are filtered by the filtering plates 19, finally, each second water suction pump 22 is started, filtered water is pumped into the precipitation circulation box 7, the booster pump 33 is started again, and liquid in the precipitation circulation box 7 enters the crushing box body 1 along the liquid return pipe 34-the spray header 8.

The working principle is as follows: putting a batch of waste lithium iron phosphate batteries into the crushing box body 1 from the upper end position, breaking the lithium iron phosphate batteries into a mixture of different raw materials according to the contents described in the first step and the second step, enabling the screening cylinder 10 to periodically and repeatedly rotate at the moment, enabling the plastic raw materials to float on the water surface, then crushing carbon rods in the plastic raw materials under the action of the stirring rod 16, enabling carbon powder to be discharged from the water leakage port 11, then pumping out the plastic raw materials doped with water by using a secondary suction pipe 13 by using the principle that the plastic can float on the water surface, pumping out most valuable metal materials from the screening pipe 10 by using the perilla and water in a tertiary suction pipe 6, and finally pumping out the valuable metal materials by using a primary suction pipe 14;

and then according to the fourth step, different materials fall into the corresponding screening boxes, the moisture in the materials is filtered by the filter plates 19 and is collected in the precipitation circulation box 7, the moisture in the precipitation circulation box 7 is returned to the crushing box body 1 again under the action of starting the booster pumps 33, and different impurities in the materials can be screened while crushing.

Example two

Valuable metals in the lithium iron phosphate battery are extracted mainly by wet treatment, wherein the valuable metals are mainly subjected to chemical reaction, for example, valuable metals in the lithium iron phosphate battery are dissolved by acid/alkaline agents, and a large amount of acid/alkaline waste gas is inevitably generated in the chemical reaction process, so that the external working environment is influenced, if the waste gas is treated in a concentrated manner, the treatment efficiency is not high, and the following technical scheme is proposed for the purpose:

referring to fig. 1, 5 and 6, the aeration heating pipe comprises an aeration heating pipe 3 arranged on one side of a primary screening box 2, a plurality of flame guns 17 are arranged on the circumferential outer surface of the aeration heating pipe 3, an exhaust pipe 31 and an air inlet pipe 35 are respectively arranged on the aeration heating pipe 3, and one end of the air inlet pipe 35 is communicated with the upper end space inside the primary screening box 2.

In the exhaust gas treatment process, the method comprises the following steps:

the method comprises the following steps: firstly, closing the second electromagnetic valve 29, stopping the suction action of the primary suction pipe 14, firstly opening the third electromagnetic valve 32 and the second water pump 22 at the corresponding position, completely draining the moisture in the primary screening box 2, closing the third electromagnetic valve 32 at the corresponding position and the second water pump 22 at the corresponding position, and filling the liquid end 21 into the interface for injecting the chemical agent into the primary screening box 2;

step two: the chemical reaction process between the valuable metal and the chemical agent is carried out in the primary screening box 2, and the generated acid/alkaline waste gas enters the aeration heating pipe 3 along the air inlet pipe 35, and the process comprises the following steps:

1: in an initial state, the ceramic piston block 30 close to the exhaust end 31 blocks the exhaust end 31, the other ceramic piston block 30 does not block the intake end 35 and is located at a position on one side of the intake end 35 away from the exhaust end 31, when acid/alkali exhaust gas enters along the intake pipe 35, the electric telescopic cylinder 18 close to the intake pipe 35 is started to drive the ceramic piston block 30 to move towards the exhaust pipe 31 until the ceramic piston block 30 completely blocks the intake pipe 35, and at this time, the ceramic piston block 30 close to the exhaust pipe 31 blocks the exhaust pipe 31 and keeps still;

2: in the process, each flame gun 17 sprays high-temperature gas flame to carry out high-temperature burning treatment on the acid/alkali waste gas, so as to burn off harmful impurities in the acid/alkali waste gas;

3: after burning for a period of time, closing the flame gun 17, and moving the ceramic piston block 30 close to the exhaust pipe 31 to a direction away from the air inlet pipe 35 until the exhaust pipe 31 is not blocked, and moving the ceramic piston block 30 close to the air inlet pipe 35 to the exhaust pipe 31 to discharge the burnt exhaust gas along the exhaust pipe 31;

4): in the last section, after the completion of the section 3), the two ceramic piston blocks 30 are restored to the initial state by activating the electric telescopic cylinder 18 again, and each of the above-described sections is cyclically performed.

The working principle is as follows: first, it should be noted that: the primary screening box 2 not only can be used for filtering valuable metal materials, but also can be used as a container for reacting the valuable metal materials with chemical agents, and when chemical reaction is carried out, the operation states of different electromagnetic valves and water pumps are controlled according to the step one until only the chemical agents and the valuable metals exist in the primary screening box 2;

then according to the content described in step two, when the valuable metal reacts with the chemical agent, the generated chemical exhaust gas enters the thermal aeration-heating pipe 3 along the gas inlet pipe 35, and firstly: in an initial state, the ceramic piston block 30 close to the exhaust end 31 blocks the exhaust end 31, the other ceramic piston block 30 does not block the air inlet end 35 and is located at a position on one side of the air inlet end 35 far away from the exhaust end 31, so that when exhaust gas enters, the exhaust pipe 31 does not give off air until a part of the exhaust gas enters the aeration heating pipe 3, and the aeration heating pipe 3 can be understood as a quantitative space to perform high-temperature burning treatment on the exhaust gas by using high-temperature flame sprayed by the flame gun 17;

after a period of time of ignition, the treated exhaust gas is discharged as described in step two-3), and the ceramic piston block 30 therein is reset, and the next exhaust gas treatment operation is circulated.

To sum up: when the batch lithium iron phosphate batteries are damaged, plastic components, carbon powder and valuable metals in the raw materials can be respectively screened out by the integral structure, so that the plastic components and the carbon powder are prevented from being doped in the valuable metals to influence the extraction efficiency of the valuable metals;

and in the chemical reaction process of the valuable metals, the waste gas generated in the reaction process is quantitatively treated, so that the waste gas can be fully subjected to high-temperature treatment, and the waste gas treatment efficiency is improved.

The foregoing is merely illustrative and explanatory of the present invention, and various modifications, additions or substitutions as would be apparent to one skilled in the art to the specific embodiments described are possible without departing from the invention as claimed herein or beyond the scope thereof.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. Absorption treatment facility of broken and high temperature treatment waste gas of iron phosphate lithium cell, a serial communication port, including broken box (1), broken box (1) is inside to be provided with broken roller (9) and screening section of thick bamboo (10) respectively along the direction from the top down, the quantity that sets up of broken roller (9) is two, and two broken roller (9) are mirror symmetry and distribute, and the one end of broken roller (9) and screening section of thick bamboo (10) is connected for rotating on the inner wall position of broken box (1), the other end of broken roller (9) and screening section of thick bamboo (10) runs through broken box (1) and is connected for rotating between broken box (1), broken box (1) outside is provided with first drive structure (4) and second drive structure (5), first drive structure (4) and second drive structure (5) are connected with the transmission end of broken box (9) and screening section of thick bamboo (10) respectively, set up a plurality of water leakage mouths (11) on the circumference outer wall of screening section of thick bamboo (10), and correspond two tertiary water leakage notches (13) of broken roller (9), the suction tube (12) and the suction tube (12) are provided with broken water leakage circulation system on the tertiary water circulation system (13), suction tube (12), suction tube (13), the suction tube (12) of broken box (1), the broken box (10) of screening section of drawing tube (10) is provided with broken one-level, one-level screening case (2), second grade screening case (27), tertiary screening case (28) and precipitation circulation case (7), tertiary suction tube (6) one end is connected at broken box (1) downside central point position, one-level suction tube (14), second grade suction tube (13) one end extend to respectively in the inside position of screening section of thick bamboo (10), be provided with sealed movable block (15) on screening section of thick bamboo (10) one end open position, one-level suction tube (14), second grade suction tube (13) are fixed on sealed movable block (15), sealed movable block (15) are connected for rotating in screening section of thick bamboo (10) open position.

2. The absorption treatment equipment for crushing lithium iron phosphate batteries and treating waste gas at high temperature according to claim 1, wherein first water suction pumps (20) are arranged on the upper surface positions of the primary screening box (2), the secondary screening box (27) and the tertiary screening box (28), the tail ends of the primary suction pipe (14), the secondary suction pipe (13) and the tertiary suction pipe (6) are respectively communicated with the inlet ends of the first water suction pumps (20), and the outlet end of each first water suction pump (20) is respectively communicated with the inner upper end spaces on the upper surface positions of the primary screening box (2), the secondary screening box (27) and the tertiary screening box (28);

be provided with three second suction pump (22), every on precipitation circulation case (7) the entering of second suction pump (22) is served and is installed feed liquor pipe (23), and the discharge end of second suction pump (22) and precipitation circulation case (7) inside intercommunication, every feed liquor pipe (23) end communicate respectively with the inside lower extreme space of one-level screening case (2), second grade screening case (27) and tertiary screening case (28).

3. The lithium iron phosphate battery crushing and high-temperature waste gas treatment absorption treatment equipment as claimed in claim 1, wherein the first-stage screening box (2), the second-stage screening box (27) and the third-stage screening box (28) are all internally and fixedly provided with a filter plate (19), the first-stage suction pipe (14) is provided with a second electromagnetic valve (29), a third electromagnetic valve (32) is arranged on a liquid inlet pipe (23) between the first-stage screening box (2) and the precipitation circulation box (7), and a liquid injection end (21) is arranged at one end of the upper surface of the first-stage screening box (2).

4. The lithium iron phosphate battery crushing and high-temperature waste gas treatment absorption and treatment equipment as claimed in claim 1, wherein the circumferential outer wall parts of the primary suction pipe (14) and the secondary suction pipe (13) inside the screening cylinder (10) are respectively provided with a suction nozzle, the opening direction of each suction nozzle faces downwards, and stirring rods (16) are symmetrically distributed and fixedly arranged on the sealing movable block (15).

5. The absorption treatment equipment for crushing lithium iron phosphate batteries and treating waste gas at high temperature according to claim 1, wherein a booster pump (33) is arranged at the upper end of the precipitation circulation box (7), the input end of the booster pump (33) is communicated with the inside of the precipitation circulation box (7), a liquid return pipe (34) is arranged at the output end of the booster pump (33), a plurality of spray headers (8) are arranged at the upper end position inside the crushing box body (1), and the liquid return pipe (34) is communicated with the spray headers (8).

6. The lithium iron phosphate battery crushing and high-temperature waste gas treatment absorption treatment equipment as claimed in claim 1, wherein a liquid separation pipe (24) is connected to a liquid inlet pipe (23) between the primary screening box (2) and the precipitation circulation box (7), and a first electromagnetic valve (25) and a third water pump (26) are respectively connected to the liquid separation pipe (24).

7. The absorption treatment equipment for crushing lithium iron phosphate batteries and treating waste gas at high temperature according to claim 1, comprising an aeration heating pipe (3) arranged at one side of a primary screening box (2), wherein a plurality of flame guns (17) are arranged on the outer circumferential surface of the aeration heating pipe (3), an exhaust pipe (31) and an intake pipe (35) are respectively arranged on the aeration heating pipe (3), and one end of the intake pipe (35) is communicated with the upper end space inside the primary screening box (2).

8. The absorption treatment equipment for crushing lithium iron phosphate batteries and treating waste gas at high temperature according to claim 7, wherein electric telescopic cylinders (18) are fixedly installed at two end positions of the aeration heating pipe (3), a transmission shaft of each electric telescopic cylinder (18) penetrates into the aeration heating pipe (3), a ceramic piston block (30) is installed at the tail end of the transmission shaft of each electric telescopic cylinder (18), and the ceramic piston blocks (30) are slidably connected on the inner wall of the aeration heating pipe (3).

9. The lithium iron phosphate battery crushing device according to any one of claims 1 to 8, characterized by comprising the following steps in crushing the lithium iron phosphate battery:

the method comprises the following steps: the first driving structure (4) drives the two crushing roller shafts (9) to crush the batch of waste lithium iron phosphate batteries, the second driving structure (5) drives the screening cylinder (10) to do periodic reciprocating rotary motion, and the rotation angle of the screening cylinder (10) does not exceed ninety degrees each time;

step two: raw materials obtained after crushing enter a screening cylinder (10) along a leakage gap (12), when the lithium iron phosphate battery is crushed, purified water is continuously injected from a spray head (8), and the liquid level of the purified water in a crushing box body (1) is higher than the setting height of a secondary suction pipe (13) in the screening cylinder (10);

step three: the first solenoid valve (25) is closed, and the second solenoid valve (29) and the third solenoid valve (32) are opened. The three first water suction pumps (20) are started simultaneously, metal raw materials which are deposited inside the screening cylinder (10) and cannot be discharged from the water leakage port (11) are pumped into the primary screening box (2) through the primary suction pipe (14), plastic materials existing in the raw materials float on the liquid level and are pumped into the secondary screening box (27) through the secondary suction pipe (13), and carbon rods in the raw materials are smashed by the stirring rod (16) in the rotation process of the screening cylinder (10), fall along the water leakage port (11) and are pumped into the tertiary screening pipe (28) through the tertiary suction pipe (6);

step four: plastic, carbon-point and valuable metal material in the different compositions in the raw and other materials fall into corresponding screening case respectively, are filtered by filter (19), start every second suction pump (22) at last, with the moisture suction after filtering to deposit circulation case (7), start booster pump (33) again, enter into broken box (1) along liquid return pipe (34) -shower head (8) with the liquid in the circulation case of deposit (7).

10. The absorption treatment apparatus for high-temperature treated exhaust gas according to any one of claims 1 to 8, comprising, in the exhaust gas treatment process, the steps of:

the method comprises the following steps: firstly, closing a second electromagnetic valve (29), stopping the suction action of a primary suction pipe (14), opening a third electromagnetic valve (32) and a second water suction pump (22) at a corresponding position, completely draining the moisture in the primary screening box (2), closing the third electromagnetic valve (32) at the corresponding position and the second water suction pump (22) at the corresponding position, and filling a liquid end (21) into an interface for injecting a chemical agent into the primary screening box (2);

step two: the chemical reaction process is carried out in the primary screening box (2), and the generated acid/alkaline waste gas enters the aeration heating pipe (3) along the air inlet pipe (35), and the process comprises the following steps:

1): in an initial state, the ceramic piston block (30) close to the exhaust end (31) blocks the exhaust end (31), the other ceramic piston block (30) cannot block the air inlet end (35) and is positioned at one side position of the air inlet end (35) far away from the exhaust end (31), when acid/alkali waste gas enters along the air inlet pipe (35), the electric telescopic cylinder (18) close to the air inlet pipe (35) is started to drive the ceramic piston block (30) to move towards the exhaust pipe (31) until the ceramic piston block (30) completely blocks the air inlet pipe (35), and at the moment, the ceramic piston block (30) close to the exhaust pipe (31) blocks the exhaust pipe (31) and keeps still;

2): in the process, each flame gun (17) sprays high-temperature gas flame to carry out high-temperature burning treatment on the acid/alkali waste gas, and harmful impurities in the acid/alkali waste gas are burnt;

3): after the waste gas is combusted, the ceramic piston block (30) close to the exhaust pipe (31) moves towards the direction far away from the air inlet pipe (35) when the flame gun (17) is closed until the exhaust pipe (31) is not blocked, and the ceramic piston block (30) close to the air inlet pipe (35) moves towards the exhaust pipe (31) to discharge the combusted waste gas along the exhaust pipe (31);

4): in the last part, after the completion of the part 3), the two ceramic piston blocks (30) are restored to the initial state by activating the electric telescopic cylinder (18) again, and each of the above-mentioned parts is cyclically performed.

Images