Tail gas treatment system of lithium battery crushing device

Abstract

The utility model relates to the technical field of waste gas recovery equipment, in particular to a tail gas treatment system of a lithium battery crushing device, which comprises a gas-liquid emulsifier and a gas-liquid separator, tail gas is introduced into the inner wall of a cyclone tower to do transverse circular motion, and meanwhile, a stirring motor is started to drive a stirring paddle to stir an organic solution in the cyclone tower to form a vortex state; the tail gas is fully mixed, absorbed and dissolved with the rotating liquid under the action of centrifugal force so as to carry out gas-liquid emulsification reaction; a liquid sealing device is controlled to open a liquid opening, meanwhile, a centrifugal motor is started to drive the upper rotary tower and the lower rotary tower to coaxially rotate, a gas-liquid phase solution enters the inner wall of the upper rotary tower to rotate, and in the rotating process, solid particles are thrown to the tower wall under the action of inertia centrifugal force; purified gas in the liquid forms a rising rotational flow and is discharged from an exhaust pipe at the top of the upper rotary tower, so that the impurity content in the tail gas can be remarkably reduced, and favorable conditions are created for subsequent treatment steps.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recovery equipment, in particular to an exhaust gas treatment system for a lithium battery crushing device. Background Technique

[0002] With the rapid development of the battery industry and the extensive use of battery facilities and equipment, especially electric vehicles, the harmless treatment and resource recycling of waste lithium batteries have become extremely urgent. The lithium battery recycling and crushing device is one of the key equipment for the recycling and treatment of waste lithium batteries, and its main function is to physically crush waste lithium batteries for subsequent sorting and extraction work. During the crushing process, the chemical substances inside the lithium battery may be released due to mechanical action, forming exhaust gas containing organic matter, dust, and harmful gases.

[0003] The exhaust gas generated during the lithium battery crushing process has a complex composition and may contain various harmful substances such as organic solvents, fluorides, lithium salts, and heavy metal vapors. These substances not only pose a threat to human health but also may pollute the atmospheric environment. Therefore, in order to protect the environment, ensure human health, and achieve the recycling of resources, it is necessary to effectively treat the exhaust gas generated by the lithium battery crushing device. Summary of the Invention

[0004] In order to overcome the defects in the prior art, the purpose of the utility model is to provide an exhaust gas treatment system for a lithium battery crushing device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides an exhaust gas treatment system for a lithium battery crushing device, including a dry filter for filtering large particles in the exhaust gas, an activated carbon adsorption bed for adsorbing organic pollutants in the exhaust gas, a catalytic furnace for decomposing organic gas, and a photo-oxygen purifier for removing the odor in the gas. An air-liquid emulsifier and an air-liquid separator for purifying the exhaust gas are arranged on the intake side of the dry filter; the air-liquid emulsifier includes a cyclone tower for introducing gas and organic solution to rotate and dissolve, a diversion pipe for guiding the gas to enter the cyclone tower tangentially, and a stirrer arranged inside the top of the cyclone tower for agitating the solution to rotate;

[0006] An air inlet for inserting the diversion pipe is opened on the top side wall of the cyclone tower, a stirring port for sleeving and cooperating with the stirrer is opened at the center of the top surface of the cyclone tower, the bottom of the cyclone tower is provided with a tower bottom sleeve in a converging trend, and the air-liquid separator includes an upper rotating tower hermetically sleeved with the tower bottom sleeve, a lower rotating tower arranged at the bottom of the upper rotating tower, and a centrifugal motor for driving the upper rotating tower and the lower rotating tower to rotate and centrifugally separate the gas;

[0007] The interiors of the upper swirling tower and the lower swirling tower are connected to each other. The bottom of the lower swirling tower is in a converging trend and is connected to a solenoid valve. The center axis of the top of the upper swirling tower is connected to an exhaust pipe, and the exhaust pipe passes through the stirring port and is connected to the intake side of a dry filter through a pipe. A liquid passing port is opened at the top of the upper swirling tower, and a liquid sealing device for blocking and opening the liquid passing port is arranged inside the top wall of the upper swirling tower. A support platform for supporting the swirling tower and the gas-liquid separator is arranged on the outer wall of the bottom of the swirling tower.

[0008] As a further improvement of this technical solution, the stirrer includes a stirring cylinder sleeved in the gap between the stirring port and the exhaust pipe, a stirring paddle coaxially connected to the bottom end of the stirring cylinder, and a stirring motor installed on the top of the swirling tower and used to drive the stirring cylinder and the stirring paddle to rotate.

[0009] As a further improvement of this technical solution, an end face gear is tightly sleeved at the top end of the stirring cylinder, and a driving gear meshing with the end face gear is coaxially connected to the output shaft end of the stirring motor.

[0010] As a further improvement of this technical solution, several layers of support rods are arranged below the support platform, and the orientations of the several layers of support rods are different. Support platforms are arranged on the outer walls of the top and bottom of the upper swirling tower, and the two support platforms are respectively lapped on a pair of support rods of different layers. A toothed ring is arranged on the top surface of the support platform located below. A transmission gear meshing with the toothed ring is coaxially connected to the output shaft end of the centrifugal motor.

[0011] As a further improvement of this technical solution, the liquid sealing device includes a sealing plate clamped with the liquid passing port, a pulling rope for pulling the sealing plate, a spring arranged on the inner wall of the top of the upper swirling tower for springing the sealing plate back to its original position, and a supporting block for supporting the spring. A through pipe is welded on the outer wall of the top of the lower swirling tower and directly below the liquid passing port. The through pipe is connected to the inside of the lower swirling tower. The lower end of the pulling rope passes through the through pipe and is tied to a pull ring. Several hooks are welded on the outer wall of the lower swirling tower and below the through pipe. The pull ring is in hanging connection with the hooks.

[0012] As a further improvement of this technical solution, the top surface of the upper swirling tower is a conical surface. The sealing plate is an arc plate structure bent in the middle, and its upper part is inclined and fits closely with the top wall of the upper swirling tower. Its lower part is vertically arranged and is slidably connected to the side wall of the upper swirling tower. A sealing gasket for clamping connection with the liquid passing port is arranged on the top surface of the upper part of the sealing plate. A limiting frame sleeved with the vertical section of the sealing plate is welded on the side wall of the upper swirling tower and directly below the liquid passing port.

[0013] As a further improvement of the present technical solution, a vertical slide groove is symmetrically provided on the convex arc surface of the vertical section of the sealing plate, the support block is clamped on the bottom surface of the slide groove, and the spring is placed between the support block and the top surface of the slide groove, a socket is provided on the outside of the upper rotating tower and toward the bottom of the slide groove, the support block is plugged into the socket, the bottom end of the pull rope is provided with a silicone sleeve, and the sleeve is tightly fitted into the through tube.

[0014] As a further improvement of the technical solution, the interior of the dry filter is composed of multiple layers of filter materials, including coarse filter materials and fine filter materials, which are placed vertically side by side, wherein the coarse filter materials are arranged close to the cyclone tower.

[0015] As a further improvement of the present technical solution, the interior of the activated carbon adsorption bed is provided with a plurality of honeycomb activated carbons stacked up and down, and pipes are provided on the upper and lower surfaces of the activated carbon adsorption bed, and the upper and lower pipes are respectively connected with the upper and lower parts of the catalytic furnace by plugging; an ignition system is installed at the bottom of the catalytic furnace, and a plurality of ceramic sheets are attached to the inner wall of the catalytic furnace, and the surface of the ceramic sheets is coated with a precious metal catalyst.

[0016] As a further improvement of the technical solution, an air pipe is inserted into one side of the top of the catalytic furnace and a butterfly valve is installed in the air pipe, a fan is installed at one end of the photo-oxygen purifier and the air inlet end of the fan is connected to the air pipe through a pipeline, and an ultraviolet laser is installed inside the photo-oxygen purifier.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The tail gas treatment system of the lithium battery crushing device introduces the tail gas into the inner wall of the cyclone tower for horizontal circular motion through the gas-liquid emulsifier and gas-liquid separator, and starts the stirring motor to drive the stirring paddle to stir the organic solution in the cyclone tower to form a vortex state. Under the action of centrifugal force, the tail gas is fully mixed with the rotating liquid to absorb and dissolve to carry out a gas-liquid emulsification reaction; the liquid sealing device is controlled to open the liquid port, and the centrifugal motor is started to drive the upper and lower towers to rotate coaxially, and the gas-liquid phase solution enters the inner wall of the upper tower to form a rotational motion. During the rotation process, the solid particles are thrown to the tower wall due to the action of inertial centrifugal force. At the same time, the purified gas in the liquid forms an ascending vortex and is discharged from the exhaust pipe on the top of the upper tower, which can significantly reduce the impurity content in the tail gas and create favorable conditions for subsequent treatment steps.

[0019] 2. The tail gas treatment system of the lithium battery crushing device is provided with a liquid sealer, that is, the sealing plate is driven to separate from the liquid port by pulling down a pull rope from the outside, and the pull rope is loosened, and the sealing plate is pushed back to block the liquid port under the action of the rebound force of the spring, and the pull ring is pulled down and connected with the hook to keep the sealing plate and the liquid port separated, without affecting the state of the upper rotating tower rotating to feed liquid.

[0020] 3. The tail gas treatment system of the lithium battery crushing device is hermetically and contactingly arranged between the sealing plate and the upper rotating tower. A spring is arranged inside the sealing plate, and a supporting block is inserted into the inner wall of the upper rotating tower to support the spring. The spring is used to reset the sealing plate to block the liquid passing port. At the same time, the spring is in an isolated state to avoid being corroded by the organic solution, making it durable.

[0021] 4. The tail gas treatment system of the lithium battery crushing device is sleeved with a silicone rubber sealing sleeve at the bottom end of the pulling rope, and the sealing sleeve is tightly sleeved and matched with the through pipe. The sealing sleeve is used to block the through pipe and ensure that the pulling rope can stretch freely, ensuring the sealing inside the lower rotating tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure of the present utility model in any way. Additionally, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to assist in understanding the present utility model, rather than specifically defining the shapes and proportional dimensions of the components of the present utility model. Those skilled in the art can, under the teaching of the present utility model, select various possible shapes and proportional dimensions according to specific circumstances to implement the present utility model.

[0023] Figure 1 is a schematic diagram of the overall assembly structure of the present utility model;

[0024] Figure 2 For the present utility model Figure 1 is a front view;

[0025] Figure 3 is a schematic diagram of the assembly structure of the gas-liquid emulsifier and the gas-liquid separator of the present utility model;

[0026] Figure 4 For the present utility model Figure 3 is a front view in a sectional state;

[0027] Figure 5 is an exploded view of the gas-liquid emulsifier of the present utility model;

[0028] Figure 6 is a partially sectional assembly drawing of the gas-liquid separator of the present utility model;

[0029] Figure 7 is a schematic diagram of the assembly structure of the upper rotating tower and the lower rotating tower of the present utility model;

[0030] Figure 8 is a partial sectional view of the upper rotating tower of the present utility model;

[0031] Figure 9 is an exploded assembly drawing of the liquid seal of the present utility model;

[0032] The meanings of the various reference numerals in the drawings are as follows:

[0033] 100, Dry filter;

[0034] 200, Activated carbon adsorption bed;

[0035] 300, Catalytic furnace;

[0036] 400, Photo-oxygen purifier;

[0037] 500, Gas-liquid emulsifier; 510, Cyclone tower; 511, Air inlet; 512, Stirring port; 513, Bottom sleeve; 520, Diversion pipe; 530, Stirrer; 531, Stirring cylinder; 5311, Stirring paddle; 5312, End face gear; 532, Stirring motor; 5321, Driving gear; 540, Support platform; 541, Support rod;

[0038] 600, Gas-liquid separator; 610, Upper swirl tower; 611, Exhaust pipe; 612, Support table; 613, Tooth ring; 614, Liquid passing port; 615, Jack; 616, Pipe passing through; 617, Limit frame; 620, Lower swirl tower; 621, Hook; 630, Centrifugal motor; 631, Driving gear;

[0039] 640, Liquid sealing device; 641, Sealing plate; 6411, Slide groove; 6412, Sealing gasket; 642, Pull rope; 6421, Pull ring; 6422, Sealing sleeve; 643, Support block; 644, Spring. Detailed implementation manners

[0040] Combined with the description of the drawings and the specific implementation manners of the present invention, the details of the present invention can be understood more clearly. However, the specific implementation manners of the present invention described herein are only for the purpose of explaining the present invention and cannot be understood in any way as a limitation of the present invention. Under the teaching of the present invention, those skilled in the art can conceive any possible variations based on the present invention, and these should all be regarded as belonging to the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which can be directly connected or indirectly connected through an intermediate medium.

[0041] The terms "central axis", "vertical", "horizontal", "front", "rear", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0042] Please refer to Figures 1-9As shown in the figure, the present utility model provides an exhaust gas treatment system for a lithium battery crushing device, which includes a dry filter 100 for filtering large particles in the exhaust gas, an activated carbon adsorption bed 200 for adsorbing organic pollutants in the exhaust gas, a catalytic furnace 300 for decomposing organic gas, and a photo-oxygen purifier 400 for removing odors in the gas; the interior of the dry filter 100 is composed of multiple layers of filter materials, which include coarse filter materials and fine filter materials, and are arranged vertically side by side, wherein the coarse filter materials are arranged close to the cyclone tower 510;

[0043] The interior of the activated carbon adsorption bed 200 is provided with a number of honeycomb activated carbons stacked up and down. Pipes are provided on both the upper and lower surfaces of the activated carbon adsorption bed 200, and the pipes above and below are respectively inserted and connected to the upper and lower parts of the catalytic furnace 300; the exhaust gas first passes through the preliminary filtration of the dry filter 100 to remove large particles therein, enters the activated carbon adsorption bed 200 and comes into full contact with the honeycomb activated carbon, and the gas is purified by the strong adsorption of the activated carbon to organic substances;

[0044] An ignition system is installed at the bottom of the catalytic furnace 300. A number of ceramic chips are attached to the inner side wall of the catalytic furnace 300, and the surface of the ceramic chips is coated with a noble metal catalyst; harmless gases such as carbon dioxide, water, and part of the heat are generated by catalytic combustion of the exhaust gas; since the gas generated by lithium battery crushing contains a large amount of organic solvents, for organic pollutants that are insoluble in water, oils or organic solvents are used for absorption, and these solvents can form a co-solvent system with the target pollutants, thereby increasing their specific gravity and facilitating subsequent separation and treatment; finally, the remaining organic substances are converted into harmless substances by methods such as catalytic combustion or pyrolysis;

[0045] A trachea is inserted into one side of the top of the catalytic furnace 300, and a butterfly valve is installed in the trachea. A fan is installed at one end of the photo-oxygen purifier 400, and the air inlet end of the fan is connected to the trachea through a pipe. An ultraviolet laser is installed inside the photo-oxygen purifier 400. Using the principle of photolysis, the high-energy and high-ozone ultraviolet light beam generated by the ultraviolet laser is used to crack the gas to remove the odor of the dust gas, and further remove pollutants such as volatile organic compounds, hydrogen sulfide, and ammonia; the above are all prior arts and will not be elaborated here.

[0046] Specifically, a gas-liquid emulsifier 500 and a gas-liquid separator 600 for purifying the exhaust gas are provided on the air inlet side of the dry filter 100; the gas-liquid emulsifier 500 includes a cyclone tower 510 for introducing the rotation and dissolution of gas and organic solution, a diversion pipe 520 for guiding the gas to enter the cyclone tower 510 tangentially, and a stirrer 530 arranged inside the top of the cyclone tower 510 for stirring the solution to rotate;

[0047] The top side wall of the cyclone tower 510 is provided with an air inlet 511 inserted with a draft tube 520. The air inlet 511 is arranged tangentially to the cyclone tower 510. The draft tube 520 is composed of a straight section and an arc section, and its arc section is adapted to fit the inner wall of the cyclone tower 510. So that the tail gas entering the cyclone tower 510 makes a horizontal circular motion along the cyclone tower 510, avoiding the failure phenomenon of packing blockage caused by the longitudinal motion of the cyclone-type equipment. The center of the top surface of the cyclone tower 510 is provided with a stirring port 512 sleeved and matched with a stirrer 530. The bottom of the cyclone tower 510 is provided with a tower bottom sleeve 513 in a converging trend. The gas-liquid separator 600 includes an upper rotating tower 610 hermetically sleeved with the tower bottom sleeve 513, a lower rotating tower 620 arranged at the bottom of the upper rotating tower 610, and a centrifugal motor 630 for driving the upper rotating tower 610 and the lower rotating tower 620 to rotate and centrifugally separate the gas.

[0048] Further, the interiors of the upper rotating tower 610 and the lower rotating tower 620 are connected and communicated. And the bottom of the lower rotating tower 620 is in a converging trend and is connected and communicated with a solenoid valve. The upper rotating tower 610 is in a cylindrical shape, and the lower rotating tower 620 is in a conical cylinder shape. A exhaust pipe 611 is communicated and arranged on the central axis of the top of the upper rotating tower 610. And the exhaust pipe 611 passes through the stirring port 512 and is connected to the intake side of the dry filter 100 through a pipe. A liquid passing port 614 is arranged at the top of the upper rotating tower 610. A liquid sealing device 640 for plugging and opening the liquid passing port 614 is arranged inside the top wall of the upper rotating tower 610. A support platform 540 for supporting the cyclone tower 510 and the gas-liquid separator 600 is arranged on the outer wall of the bottom of the cyclone tower 510.

[0049] After the reaction in the cyclone tower 510 is completed, control the liquid sealing device 640 to open the liquid passing port 614. At the same time, start the centrifugal motor 630 to drive the upper rotating tower 610 and the lower rotating tower 620 to rotate coaxially. The gas-liquid melt enters the inner wall of the upper rotating tower 610 tangentially through the liquid passing port 614 to form a rotating motion. During the rotation process, the solid particles are thrown towards the tower wall due to the action of inertial centrifugal force and flow down to the outlet at the conical bottom of the lower rotating tower 620 with the lower rotating tower 620, and the liquid is discharged by energizing the solenoid valve. At the same time, the gas in the liquid forms an upward swirling flow and is discharged from the exhaust pipe 611 at the top of the upper rotating tower 610, flowing to the dry filter 100 to preliminarily filter the large particles in the gas.

[0050] Specifically, the stirrer 530 includes a stirring cylinder 531 sleeved in the gap between the stirring port 512 and the exhaust pipe 611, a stirring paddle 5311 coaxially connected to the bottom end of the stirring cylinder 531, and a stirring motor 532 installed on the top of the cyclone tower 510 and used for driving the stirring cylinder 531 and the stirring paddle 5311 to rotate. The top end of the stirring cylinder 531 is tightly sleeved with an end face gear 5312. The output shaft end of the stirring motor 532 is coaxially connected with a driving gear 5321 meshing with the end face gear 5312.

[0051] Start the stirring motor 532 to drive the driving gear 5321 to drive the end gear 5312 to rotate, and drive the stirring drum 531 and the stirring paddle 5311 to rotate coaxially, thereby stirring the organic solution in the cyclone tower 510 to form a vortex and mix and dissolve with the exhaust gas entering the tower along the tangential direction under a high-speed rotating state to increase the smoke dust density for subsequent separation and treatment.

[0052] Furthermore, a plurality of layers of supporting rods 541 are arranged below the support platform 540, and the orientations of the plurality of layers of supporting rods 541 are different. Support platforms 612 are provided on the top and bottom outer walls of the upper rotating tower 610. The two supporting platforms 612 are respectively overlapped on a pair of supporting rods 541 of different layers, so that the gas-liquid separator 600 is stably supported. A gear ring 613 is provided on the top surface of the supporting platform 612 located below, and a transmission gear 631 meshing with the gear ring 613 is coaxially connected to the output shaft end of the centrifugal motor 630, so that the gas-liquid separator 600 is stably driven to rotate, thereby generating centrifugal force on the gas-liquid phase solution inside the gas-liquid separator 600 to achieve the effect of gas-liquid separation.

[0053] Specifically, the liquid sealing device 640 includes a sealing plate 641 that is engaged with the liquid passage 614, a pull rope 642 for pulling the sealing plate 641, and a spring 644 for returning the sealing plate 641 to its original position and a support block 643 for supporting the spring 644, which are arranged on the inner wall of the top of the upper rotating tower 610; that is, the sealing plate 641 is driven to separate from the liquid passage 614 by pulling the pull rope 642 downward from the outside, and the pull rope 642 is released, and the sealing plate 641 is pushed back to its original position and blocks the liquid passage 614 under the action of the rebound force of the spring 644; the top of the lower rotating tower 620 A through tube 616 is welded on the outer wall and just below the liquid outlet 614. The through tube 616 is connected to the interior of the lower rotating tower 620. The lower end of the pull rope 642 passes through the through tube 616 and is fastened with a pull ring 6421. A plurality of hooks 621 are welded on the outer wall of the lower rotating tower 620 and below the through tube 616. The pull ring 6421 is engaged with the hook 621. Pulling the pull ring 6421 down and engaging it with the hook 621 keeps the sealing plate 641 detached from the liquid outlet 614 without affecting the rotation of the upper rotating tower 610 to allow liquid to enter.

[0054] Further, the top surface of the upper swirling tower 610 is a conical surface, so that the liquid at the bottom of the cyclone tower 510 gathers at the liquid passing port 614 and automatically flows into the upper swirling tower 610; the sealing plate 641 is an arc plate structure with a middle bend, and its upper part is inclined and fits closely with the top wall of the upper swirling tower 610, and its lower part is vertically arranged and slidably connected with the side wall of the upper swirling tower 610. A sealing gasket 6412 that is snap-fitted with the liquid passing port 614 is provided on the upper top surface of the sealing plate 641. The sealing gasket 6412 is made of silica gel to seal the liquid passing port 614; and a rubber ring is fixedly embedded in the inner wall of the tower bottom sleeve 513 to seal the outer wall of the upper swirling tower 610, ensuring the seal inside the cyclone tower 510 and not hindering the rotation of the upper swirling tower 610; a limiting frame 617 sleeved with the vertical section of the sealing plate 641 is welded on the side wall of the upper swirling tower 610 and directly below the liquid passing port 614 for limiting the lifting movement of the sealing plate 641.

[0055] Further, vertical chutes 6411 are symmetrically opened on the convex arc surface of the vertical section of the sealing plate 641. The supporting blocks 643 are snap-fitted on the bottom surface of the chutes 6411, and the springs 644 are placed between the supporting blocks 643 and the top surface of the chutes 6411. An insertion hole 615 is opened on the outside of the upper swirling tower 610 and facing the bottom of the chutes 6411. The supporting blocks 643 are inserted and matched with the insertion hole 615. A sealing gasket is adhered to the convex arc surface of the vertical section of the sealing plate 641, so that the insertion hole 615 is in a sealed state and the springs 644 are in an isolated state to avoid being corroded by the organic solution; a sealing sleeve 6422 made of silica gel is sleeved on the bottom end of the pull rope 642, and the sealing sleeve 6422 is tightly sleeved and matched with the through pipe 616. The through pipe 616 is blocked by the sealing sleeve 6422, and the pull rope 642 can be stretched freely, ensuring the seal inside the lower swirling tower 620.

[0056] When the tail gas treatment system of the lithium battery crushing device of the present utility model treats tail gas, the tail gas tangentially enters the cyclone tower 510 under the traction of the fan. At the same time, the stirring motor 532 is started to drive the stirring paddle 5311 to stir the organic solution in the cyclone tower 510 to form a vortex state. Under the action of centrifugal force, the tail gas is fully mixed and dissolved with the rotating liquid to carry out a gas-liquid emulsification reaction, thereby increasing the specific gravity of the soot, so as to achieve the purpose of tail gas purification.

[0057] The liquid control device 640 is actuated to open the liquid passage port 614, and at the same time, the centrifugal motor 630 is started to drive the upper rotating tower 610 and the lower rotating tower 620 to rotate coaxially. The gas-liquid melt tangentially enters the inner wall of the upper rotating tower 610 through the liquid passage port 614 to form a rotating motion. During the rotation, the solid particles are thrown towards the tower wall due to the action of inertial centrifugal force and flow down with the lower rotating tower 620 to the outlet at the conical bottom thereof, and the energized solenoid valve releases and discharges the liquid. At the same time, the purified gas in the liquid forms an upward swirling flow and is discharged from the exhaust pipe 611 at the top of the upper rotating tower 610, and flows to the dry filter 100 to preliminarily filter large particulate matters in the gas, which can significantly reduce the impurity content in the tail gas and create favorable conditions for subsequent treatment steps.

[0058] Then it enters the activated carbon adsorption bed 200 and comes into full contact with the honeycomb activated carbon. The gas is purified by using the strong adsorption of the activated carbon to organic substances. The gas forms a circulating flow between the activated carbon adsorption bed 200 and the catalytic furnace 300 through adsorption and combustion. The gas generates harmless gases such as carbon dioxide, water and part of the heat through catalytic combustion. The heat of combustion is transferred to the inside of the activated carbon adsorption bed 200 for circulation. When the hot gas source reaches the boiling point of the organic substances, the organic substances volatilize from the activated carbon and then enter the catalytic furnace 300 to be catalytically decomposed into water and carbon dioxide by combustion, and at the same time, energy is released until the organic substances are completely separated from the activated carbon and decomposed in the catalytic furnace 300. Among them, the activated carbon is regenerated and the organic substances are also decomposed. Then the butterfly valve at the top of the catalytic furnace 300 is opened, and the fan at one end of the photo-oxygen purifier 400 is started and the fan sucks the gas in the catalytic furnace 300. The high-energy and high-ozone ultraviolet light beam generated by the ultraviolet laser is used to crack the gas to remove the odor of the dust gas, and then pollutants such as volatile organic compounds, hydrogen sulfide and ammonia are removed, and then it can be discharged to the outside.

[0059] It should be noted that the above embodiments are only for explaining the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An exhaust gas treatment system for a lithium battery crushing device, comprising a dry filter (100) for filtering large particles in the exhaust gas, an activated carbon adsorption bed (200) for adsorbing organic pollutants in the exhaust gas, a catalytic furnace (300) for decomposing organic gas, and a photo-oxygen purifier (400) for removing odors in the gas, characterized in that: The air inlet side of the dry filter (100) is provided with a gas-liquid emulsifier (500) and a gas-liquid separator (600) for purifying tail gas; the gas-liquid emulsifier (500) comprises a cyclone tower (510) for introducing gas and organic solution to rotate and dissolve, a guide pipe (520) for guiding the gas to enter the cyclone tower (510) in a tangential direction, and a stirrer (530) provided in the top of the cyclone tower (510) for stirring the solution to rotate; The top side wall of the cyclone tower (510) is provided with an air inlet (511) plugged into the guide pipe (520), the center of the top surface of the cyclone tower (510) is provided with a stirring port (512) sleeved with the stirrer (530), the bottom of the cyclone tower (510) is provided with a tower bottom sleeve (513) in a retracted trend, and the gas-liquid separator (600) comprises an upper rotating tower (610) sleeved with the tower bottom sleeve (513), a lower rotating tower (620) arranged at the bottom of the upper rotating tower (610), and a centrifugal motor (630) for driving the upper rotating tower (610) and the lower rotating tower (620) to rotate and centrifugally separate gas; The interiors of the upper rotating tower (610) and the lower rotating tower (620) are interconnected, and the bottom of the lower rotating tower (620) is in a tendency to be contracted and is interconnected with a solenoid valve; an exhaust pipe (611) is connected to the central axis of the top of the upper rotating tower (610), and the exhaust pipe (611) passes through a stirring port (512) and is connected to the air inlet side of the dry filter (100) through a pipeline; a liquid opening (614) is provided at the top of the upper rotating tower (610), and a liquid sealing device (640) for sealing and opening the liquid opening (614) is provided in the top wall of the upper rotating tower (610); and a support platform (540) for supporting the cyclone tower (510) and the gas-liquid separator (600) is provided on the bottom outer wall of the cyclone tower (510).

2. The tail gas treatment system of the lithium battery crushing device according to claim 1 is characterized in that: The stirrer (530) comprises a stirring drum (531) sleeved in the gap between the stirring port (512) and the exhaust pipe (611), a stirring paddle (5311) coaxially connected to the bottom end of the stirring drum (531), and a stirring motor (532) mounted on the top of the cyclone tower (510) and used for driving the stirring drum (531) and the stirring paddle (5311) to rotate.

3. The tail gas treatment system of the lithium battery crushing device according to claim 2 is characterized in that: The top end of the mixing drum (531) is tightly sleeved with an end face gear (5312), and the output shaft end of the mixing motor (532) is coaxially connected with a driving gear (5321) meshing with the end face gear (5312).

4. The tail gas treatment system of the lithium battery crushing device according to claim 3 is characterized in that: A plurality of layers of supporting rods (541) are arranged below the support platform (540), and the plurality of layers of supporting rods (541) are oriented in different directions. Support platforms (612) are arranged on the top and bottom outer walls of the upper rotating tower (610). The two support platforms (612) are respectively overlapped on a pair of supporting rods (541) at different layers, wherein a gear ring (613) is arranged on the top surface of the support platform (612) located at the bottom, and a transmission gear (631) meshing with the gear ring (613) is coaxially connected to the output shaft end of the centrifugal motor (630).

5. The tail gas treatment system of the lithium battery crushing device according to claim 4 is characterized in that: The liquid sealing device (640) comprises a sealing plate (641) clamped with the liquid outlet (614), a pulling rope (642) for pulling the sealing plate (641), and a spring (644) for resetting the upper sealing plate (641) and a supporting block (643) for supporting the spring (644) arranged on the top inner wall of the upper rotating tower (610); a through pipe (616) is welded on the top outer wall of the lower rotating tower (620) and located directly below the liquid outlet (614); the through pipe (616) is connected to the interior of the lower rotating tower (620); the lower end of the pulling rope (642) passes through the through pipe (616) and is fastened with a pulling ring (6421); a plurality of hooks (621) are welded on the outer wall of the lower rotating tower (620) and located below the through pipe (616); the pulling rings (6421) are hooked and matched with the hooks (621).

6. The tail gas treatment system of the lithium battery crushing device according to claim 5, characterized in that: The top surface of the upper rotating tower (610) is a conical surface, the sealing plate (641) is an arc plate structure with a bent middle portion, and its upper portion is inclined and fits closely to the top wall of the upper rotating tower (610), and its lower portion is vertically arranged and slidably connected to the side wall of the upper rotating tower (610). The upper top surface of the sealing plate (641) is provided with a sealing gasket (6412) that is snap-fitted with the liquid passage port (614), and a limiting frame (617) that is sleeved with the vertical section of the sealing plate (641) is welded to the side wall of the upper rotating tower (610) and is located directly below the liquid passage port (614).

7. The tail gas treatment system of the lithium battery crushing device according to claim 6, characterized in that: The vertical section of the sealing plate (641) is symmetrically provided with a vertical slide groove (6411) on the convex arc surface, the support block (643) is clamped on the bottom surface of the slide groove (6411), and the spring (644) is placed between the support block (643) and the top surface of the slide groove (6411), and a socket (615) is provided on the outside of the upper rotating tower (610) and toward the bottom of the slide groove (6411), the support block (643) and the socket (615) are plugged into each other, and the bottom end of the pull rope (642) is provided with a silicone sleeve (6422), and the sleeve (6422) and the through tube (616) are tightly fitted into each other.

8. The tail gas treatment system of the lithium battery crushing device according to claim 1, characterized in that: The interior of the dry filter (100) is composed of multiple layers of filter material, including coarse filter material and fine filter material, which are placed vertically side by side, wherein the coarse filter material is arranged close to the cyclone tower (510).

9. The tail gas treatment system of the lithium battery crushing device according to claim 8, characterized in that: The activated carbon adsorption bed (200) is provided with a plurality of honeycomb activated carbons stacked up and down inside, and the upper and lower surfaces of the activated carbon adsorption bed (200) are provided with pipes, and the upper and lower pipes are respectively connected to the upper and lower parts of the catalytic furnace (300) by plugging; an ignition system is installed at the bottom of the catalytic furnace (300), and the inner side wall of the catalytic furnace (300) is attached with a plurality of ceramic sheets, and the surface of the ceramic sheets is coated with a precious metal catalyst.

10. The tail gas treatment system of the lithium battery crushing device according to claim 9, characterized in that: An air pipe is plugged into one side of the top of the catalytic furnace (300) and a butterfly valve is installed in the air pipe. A fan is installed at one end of the photo-oxygen purifier (400) and the air inlet end of the fan is connected to the air pipe through a pipeline. An ultraviolet laser is installed inside the photo-oxygen purifier (400).

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