Waste gas treatment equipment for lithium battery negative electrode material production

Abstract

The utility model relates to the technical field of lithium battery production equipment, in particular to waste gas treatment equipment for producing a lithium battery cathode material. The utility model provides waste gas treatment equipment for lithium battery negative electrode material production. The waste gas treatment equipment comprises a ventilation pipeline, a gas collection tank, mounting lugs, a waste gas collection assembly, a pretreatment assembly, a catalytic combustion assembly, a waste heat recovery assembly and a discharge assembly. Compared with the problems of low waste gas treatment efficiency, resource waste, secondary pollution and the like in the using process of traditional lithium battery production equipment, when the lithium battery production equipment is used, waste gas is firstly sucked into the pretreatment assembly through the waste gas collection assembly, enters the catalytic combustion assembly after being subjected to dust removal and washing treatment, and then enters the waste gas treatment assembly; in the catalytic combustion unit, an organic solvent in the waste gas is subjected to a combustion reaction under the action of a catalyst to generate harmless substances, and meanwhile, high-temperature gas generated by combustion heats process gas such as newly-produced nitrogen through a waste heat recovery assembly, so that waste heat utilization is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production equipment, in particular to an exhaust gas treatment device for the production of lithium battery negative electrode materials. Background Technique

[0002] The preparation of lithium battery graphite negative electrode materials usually uses raw materials for preparing graphite negative electrode materials and pitch, and is prepared through steps such as kneading, forming, impregnating, roasting, and graphitization.

[0003] During actual use, a large amount of waste gas containing pollutants such as dust, organic solvents, and acid mist will be generated. If these waste gases are directly discharged into the environment without treatment, it will not only cause environmental pollution, but also affect the health of employees, thus making it inconvenient to solve problems such as low exhaust gas treatment efficiency, resource waste, and secondary pollution in the prior art.

[0004] Therefore, in view of the above-mentioned problem of inconvenient improvement of sand separation efficiency, an exhaust gas treatment device for the production of lithium battery negative electrode materials can be designed. When the lithium battery production equipment is in use, the waste gas is first inhaled into the pretreatment component through the waste gas collection component. After dust removal and washing treatment, it enters the catalytic combustion component. In the catalytic combustion unit, the organic solvents in the waste gas undergo a combustion reaction under the action of a catalyst to generate harmless substances. At the same time, the high-temperature gas generated by combustion heats process gases such as newly prepared nitrogen through the waste heat recovery component to realize waste heat utilization. Finally, the treated waste gas is discharged through the discharge component. Content of the Utility Model

[0005] In order to overcome the problem that during the use of lithium battery production equipment, a large amount of waste gas containing pollutants such as dust, organic solvents, and acid mist will be generated. If these waste gases are directly discharged into the environment without treatment, it will not only cause environmental pollution, but also affect the health of employees, thus making it inconvenient to solve problems such as low exhaust gas treatment efficiency, resource waste, and secondary pollution in the prior art.

[0006] The technical solution of the utility model is: an exhaust gas treatment device for the production of lithium battery negative electrode materials, including a ventilation duct, a gas collection box, mounting ears, a waste gas collection component, a pretreatment component, a catalytic combustion component, a waste heat recovery component, and a discharge component; mounting ears are arranged above the gas collection box, and multiple groups of mounting ears are provided. A waste gas collection component is arranged below the gas collection box. A ventilation duct is arranged on one side of the gas collection box. A pretreatment component is arranged on one side of the ventilation duct. A catalytic combustion component is arranged on one side of the pretreatment component. A waste heat recovery component is arranged on one side of the catalytic combustion component. A discharge component is arranged on one side of the waste heat recovery component.

[0007] Preferably, when the lithium battery production equipment is in use, the waste gas is first inhaled into the pretreatment component through the waste gas collection component. After dust removal and washing treatment, it enters the catalytic combustion component. In the catalytic combustion unit, the organic solvents in the waste gas undergo a combustion reaction under the action of a catalyst to generate harmless substances. At the same time, the high-temperature gas generated by combustion heats process gases such as newly produced nitrogen through the waste heat recovery component to achieve waste heat utilization. Finally, the treated waste gas is discharged through the discharge component.

[0008] Preferably, the waste gas collection component includes a rotating motor, a rotating shaft, rotating fan blades, and a mounting bracket; a mounting bracket is arranged inside the gas collection box, a rotating motor is arranged above the mounting bracket, the output end of the rotating motor is provided with a rotating shaft, and one end of the rotating shaft is provided with rotating fan blades.

[0009] Preferably, the waste gas collection component further includes a gas collection hood and a filter plate; a gas collection hood is arranged below the gas collection box, and a filter plate is arranged inside the gas collection hood.

[0010] Preferably, the pretreatment component includes a cyclone dust collector and a scrubbing tower; a cyclone dust collector is arranged on the side wall of the ventilation duct, and a scrubbing tower is arranged at one end of the ventilation duct.

[0011] Preferably, the catalytic combustion component includes a catalytic reactor and a heater; a catalytic reactor is arranged on one side of the scrubbing tower, and a heater is arranged on the side wall of the catalytic reactor.

[0012] Preferably, the waste heat recovery component includes a heat exchanger and a cooler; a heat exchanger is arranged on one side of the catalytic reactor, and a cooler is arranged on the side wall of the heat exchanger.

[0013] Preferably, the discharge component includes a discharge pipe, an exhaust fan, and a support frame; a discharge pipe is arranged on one side of the heat exchanger, a support frame is arranged inside the exhaust duct, and an exhaust fan is arranged on the side wall of the support frame.

[0014] Advantages of the present utility model:

[0015] 1. When the lithium battery production equipment is in use, the waste gas is first inhaled into the pretreatment component through the waste gas collection component. After dust removal and washing treatment, it enters the catalytic combustion component. In the catalytic combustion unit, the organic solvents in the waste gas undergo a combustion reaction under the action of a catalyst to generate harmless substances. At the same time, the high-temperature gas generated by combustion heats process gases such as newly produced nitrogen through the waste heat recovery component to achieve waste heat utilization. Finally, the treated waste gas is discharged through the discharge component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a first three-dimensional structural schematic diagram of the waste gas treatment equipment for the production of lithium battery negative electrode materials of the present utility model;

[0017] Figure 2 Shown is a first partial three-dimensional structural schematic diagram of an exhaust gas treatment device for the production of a lithium battery anode material according to the present utility model;

[0018] Figure 3 Shown is a second partial three-dimensional structural schematic diagram of an exhaust gas treatment device for the production of a lithium battery anode material according to the present utility model;

[0019] Figure 4 Shown is a third partial three-dimensional structural schematic diagram of an exhaust gas treatment device for the production of a lithium battery anode material according to the present utility model;

[0020] Description of reference numerals: 1, ventilation duct; 2, air collection box; 3, mounting ear; 101, rotating motor; 102, rotating shaft; 103, rotating fan blade; 104, mounting frame; 105, air collection hood; 106, filter plate; 201, cyclone dust collector; 202, scrubbing tower; 301, catalytic reactor; 302, heater; 401, heat exchanger; 402, cooler; 501, discharge duct; 502, exhaust fan; 503, support frame. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Please refer to Figures 1-4 , the present utility model provides an embodiment: an exhaust gas treatment device for the production of a lithium battery anode material, including a ventilation duct 1, an air collection box 2, a mounting ear 3, an exhaust gas collection component, a pretreatment component, a catalytic combustion component, a waste heat recovery component, and a discharge component; mounting ears 3 are provided above the air collection box 2, and multiple groups of mounting ears 3 are provided. An exhaust gas collection component is provided below the air collection box 2, a ventilation duct 1 is provided on one side of the air collection box 2, a pretreatment component is provided on one side of the ventilation duct 1, a catalytic combustion component is provided on one side of the pretreatment component, a waste heat recovery component is provided on one side of the catalytic combustion component, and a discharge component is provided on one side of the waste heat recovery component.

[0023] Please refer to Figure 2, the exhaust gas collection component includes a rotating motor 101, a rotating shaft 102, a rotating fan blade 103 and a mounting bracket 104; a mounting bracket 104 is arranged inside the gas collection box 2, a rotating motor 101 is arranged above the mounting bracket 104, the output end of the rotating motor 101 is provided with a rotating shaft 102, and one end of the rotating shaft 102 is provided with a rotating fan blade 103; through the rotating fan blade 103, the exhaust gas can be sucked into the inside of the gas collection box 2 under the action of negative pressure; the exhaust gas collection component further includes a gas collection hood 105 and a filter plate 106; a gas collection hood 105 is arranged below the gas collection box 2, and a filter plate 106 is arranged inside the gas collection hood 105; starting the rotating motor 101 can drive the rotating fan blade 103 to rotate through the rotating shaft 102, and through the rotating fan blade 103, the exhaust gas can be sucked into the inside of the gas collection hood 105 under the action of negative pressure and be conveyed to the subsequent treatment unit through the ventilation duct 1; the pretreatment component includes a cyclone dust collector 201 and a scrubbing tower 202; a cyclone dust collector 201 is arranged on the side wall of the ventilation duct 1, and a scrubbing tower 202 is arranged at one end of the ventilation duct 1; the exhaust gas first enters the cyclone dust collector 201, and the dust particles therein are removed by centrifugal force. Then, the exhaust gas after dust removal treatment enters the scrubbing tower 202, contacts and reacts with the scrubbing liquid to remove the acidic substances and part of the organic solvents therein.

[0024] Please refer to Figures 3-4 , in this embodiment, the catalytic combustion component includes a catalytic reactor 301 and a heater 302; a catalyst reactor is arranged on one side of the scrubbing tower 202, and a heater 302 is arranged on the side wall of the catalyst reactor; the exhaust gas contacts the catalyst in the catalytic reactor 301 and undergoes a combustion reaction under the action of the catalyst to oxidize and decompose the organic solvent into carbon dioxide and water vapor. Moreover, the heater 302 provides the necessary heat to ensure that the catalytic combustion reaction proceeds within a suitable temperature range; the waste heat recovery component includes a heat exchanger 401 and a cooler 402; a heat exchanger 401 is arranged on one side of the catalyst reactor, and a cooler 402 is arranged on the side wall of the heat exchanger 401; the high-temperature gas exchanges heat with the process gas to be heated through the heat exchanger 401 to realize the recovery and utilization of waste heat. Moreover, the cooler 402 dissipates heat from the gas after heat exchange to ensure the safe operation of the equipment; the discharge component includes a discharge pipe 501, an exhaust fan 502 and a support frame 503; a discharge pipe 501 is arranged on one side of the heat exchanger 401, a support frame 503 is arranged inside the exhaust duct, and an exhaust fan 502 is arranged on the side wall of the support frame 503; the treated exhaust gas is discharged into the atmosphere through the discharge pipe 501 under the action of the exhaust fan 502.

[0025] When the lithium battery production equipment is in use, starting the rotating motor 101 can drive the rotating fan blade 103 to rotate through the rotating shaft 102. Through the rotating fan blade 103, the waste gas can be sucked into the interior of the air collecting hood 105 under the action of negative pressure and be transported to the subsequent treatment unit through the ventilation duct 1;

[0026] Then, the waste gas enters the cyclone dust collector 201, and the dust particles therein are removed through centrifugal force. The waste gas that has undergone dust removal treatment then enters the scrubbing tower 202, comes into contact and reacts with the scrubbing liquid to remove the acidic substances and part of the organic solvents therein;

[0027] Subsequently, the waste gas comes into contact with the catalyst in the catalytic reactor 301, and a combustion reaction occurs under the action of the catalyst to oxidize and decompose the organic solvents into carbon dioxide and water vapor. In addition, the heater 302 provides the necessary heat to ensure that the catalytic combustion reaction proceeds within an appropriate temperature range;

[0028] Moreover, the high-temperature gas exchanges heat with the process gas to be heated through the heat exchanger 401 to achieve the recovery and utilization of waste heat. In addition, the cooler 402 dissipates heat from the gas after heat exchange to ensure the safe operation of the equipment;

[0029] Finally, the treated waste gas is discharged into the atmosphere through the discharge pipe 501 under the action of the exhaust fan 502.

[0030] Through the above steps, when the lithium battery production equipment is in use, the waste gas is first sucked into the pretreatment assembly through the waste gas collection assembly. After dust removal and scrubbing treatment, it enters the catalytic combustion assembly. In the catalytic combustion unit, the organic solvents in the waste gas undergo a combustion reaction under the action of the catalyst to generate harmless substances. At the same time, the high-temperature gas generated by combustion heats process gases such as newly prepared nitrogen through the waste heat recovery assembly to achieve waste heat utilization. Finally, the treated waste gas is discharged through the discharge assembly.

[0031] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. An exhaust gas treatment device for the production of a negative electrode material for a lithium battery, comprising a ventilation duct (1); characterized in that: It also includes a gas collecting box (2), mounting ears (3), an exhaust gas collection component, a pretreatment component, a catalytic combustion component, a waste heat recovery component, and an emission component; mounting ears (3) are provided above the gas collecting box (2), and multiple groups of mounting ears (3) are provided. An exhaust gas collection component is provided below the gas collecting box (2), a ventilation duct (1) is provided on one side of the gas collecting box (2), a pretreatment component is provided on one side of the ventilation duct (1), a catalytic combustion component is provided on one side of the pretreatment component, a waste heat recovery component is provided on one side of the catalytic combustion component, and an emission component is provided on one side of the waste heat recovery component.

2. The waste gas treatment equipment for the production of the negative electrode material of a lithium battery according to claim 1, characterized in that: The exhaust gas collection component includes a rotating motor (101), a rotating shaft (102), rotating fan blades (103), and a mounting frame (104); a mounting frame (104) is provided inside the gas collecting box (2), a rotating motor (101) is provided above the mounting frame (104), a rotating shaft (102) is provided at the output end of the rotating motor (101), and rotating fan blades (103) are provided at one end of the rotating shaft (102).

3. The waste gas treatment equipment for the production of the negative electrode material of a lithium battery according to claim 1, wherein: The exhaust gas collection component also includes a gas collecting hood (105) and a filter plate (106); a gas collecting hood (105) is provided below the gas collecting box (2), and a filter plate (106) is provided inside the gas collecting hood (105).

4. An exhaust gas treatment device for the production of a lithium battery anode material according to claim 1, characterized in that: The pretreatment component includes a cyclone dust collector (201) and a scrubbing tower (202); a cyclone dust collector (201) is provided on the side wall of the ventilation duct (1), and a scrubbing tower (202) is provided at one end of the ventilation duct (1).

5. An exhaust gas treatment device for the production of a lithium battery anode material according to claim 4, characterized in that: The catalytic combustion component includes a catalytic reactor (301) and a heater (302); a catalyst reactor is provided on one side of the scrubbing tower (202), and a heater (302) is provided on the side wall of the catalyst reactor.

6. The waste gas treatment equipment for the production of the anode material of a lithium battery according to claim 5, characterized in that: The waste heat recovery component includes a heat exchanger (401) and a cooler (402); a heat exchanger (401) is provided on one side of the catalyst reactor, and a cooler (402) is provided on the side wall of the heat exchanger (401).

7. An exhaust gas treatment device for the production of a lithium battery anode material according to claim 6, characterized in that: The emission component includes an emission duct (501), an exhaust fan (502), and a support frame (503); an emission duct (501) is provided on one side of the heat exchanger (401), a support frame (503) is provided inside the exhaust duct, and an exhaust fan (502) is provided on the side wall of the support frame (503).

Images