CN216431754U - Flue gas treatment system for carbonization production of lithium battery cathode material - Google Patents
Flue gas treatment system for carbonization production of lithium battery cathode material Download PDFInfo
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Abstract
The utility model discloses a flue gas treatment system for carbonization production of lithium battery cathode materials, which comprises a treatment furnace, a first treatment module, a second treatment module and a smoke exhaust module, wherein the first treatment module is connected with the treatment furnace, the first treatment module and the second treatment module are used for treating tar-containing flue gas in the treatment furnace, the second treatment module comprises a reducing agent spray gun, and a reducing solvent is directly injected into the treatment furnace through compressed air by the reducing agent spray gun, so that the effect of eliminating nitrogen oxides is achieved. The device can be used for simultaneously treating tar and nitrogen oxides generated in the production process of lithium battery cathodes of various roller kilns, tunnel kilns or rotary furnaces, has the advantages of simple structure, high efficiency, environmental protection, energy conservation and low cost, and can automatically adjust the nitrogen oxide treatment effect according to the national environmental protection on-line system monitoring data and protect the system operation.
Description
Technical Field
The utility model relates to the field of lithium battery production equipment, in particular to a flue gas treatment system for carbonization production of lithium battery cathode materials.
Background
With the rapid development of the new energy automobile industry in China, the power lithium battery industry for new energy automobiles is also in vigorous development. Graphite is commonly used as a main material in the negative electrode of the lithium battery in the industry at present, and the carbonization production process of the negative electrode material of the lithium battery usually comprises the following main processes: firstly filling the crushed raw materials, then carrying out high-temperature carbonization at 1200 ℃ under the protection of nitrogen, introducing the tar-containing flue gas generated in the process into a treatment furnace for combustion treatment, and then discharging. In actual production, substances such as tar and nitric oxide are generated in the carbonization process, and the tar and the nitric oxide not only pollute the environment, but also harm the health of human bodies, so that smoke pollutants generated in the carbonization production process of the lithium battery cathode material must be treated, and the design of a smoke treatment system for the production of the lithium battery cathode material is urgent.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a system for treating flue gas generated in the carbonization production of lithium battery cathode materials, which can treat tar and nitric oxide generated in the production process and has the advantages of simple structure, high efficiency, environmental protection and energy conservation.
The utility model aims to solve the technical problem of providing a system for treating flue gas generated in carbonization production of a lithium battery cathode material, which can automatically protect the operation of the system, can be butted with a national environment-friendly online monitoring device, automatically adjust the filling amount of a reducing agent solution to achieve the best effect, and has the advantages of automatic adjustment, safety, reliability and low cost.
In order to solve the technical problem, the utility model provides a flue gas treatment system for carbonization production of lithium battery cathode materials, which comprises a treatment furnace, a first treatment module, a second treatment module and a smoke discharge module, wherein the first treatment module is connected with the treatment furnace, and the first treatment module and the second treatment module are used for treating tar-containing flue gas in the treatment furnace.
The first treatment module comprises a natural gas pipe, a combustion-supporting pipe and a combustion spray gun, the natural gas pipe is communicated with an external natural gas source, the combustion-supporting pipe is communicated with the external combustion-supporting air source, the natural gas pipe is communicated with the combustion-supporting pipe, natural gas and combustion-supporting air are introduced into the combustion spray gun, and the combustion spray gun is communicated with the treatment furnace.
First processing module still includes cooling air pipe, cooling air pipe and outside normal atmospheric temperature air source or low temperature air source intercommunication, cooling air pipe inserts inside the treatment furnace.
The smoke exhaust module is communicated with the rear end of the treatment furnace and used for exhausting the treated smoke.
The second treatment module comprises a reducing agent spray gun, the reducing agent spray gun is inserted into the treatment furnace to fill the treatment furnace with a reducing agent, and the reducing agent spray gun and the combustion spray gun are arranged at positions of the treatment furnace far away from the rear end of the treatment furnace.
Wherein, the treatment furnace divide into first section, middle section and end, the end is close to the module of discharging fume, the first section is kept away from the module of discharging fume, the middle section is located the first section with between the end, the burning spray gun is located and is close to the first section or the position of middle section, the reducing agent spray gun is located the first section court the position of end direction skew or the middle section court the position of end direction skew.
Wherein the combustion spray gun and the reducing agent spray gun are positioned on the same side in the treatment furnace, and the cooling air pipe is positioned on the opposite side of the treatment furnace from the reducing agent spray gun.
The second processing module further comprises a compressed air pipeline and a reducing agent pipeline, and the compressed air pipeline and the reducing agent pipeline are connected into the reducing agent spray gun at the same time.
Wherein, the treatment furnace is of a horizontal structure.
The treatment furnace is of a vertical structure, the first section of the treatment furnace is positioned at the lower part of the treatment furnace, and a sewage draining outlet is formed in the bottom of the first section.
And a safety feedback device is arranged beside the sewage draining exit and is used for detecting the opening and closing conditions of the sewage draining exit and sending a feedback signal.
The flue gas treatment system for the carbonization production of the lithium battery cathode material further comprises a pretreatment module, wherein the pretreatment module comprises a deionized water preparation device, a reducing agent adding device, a storage bin and a filtering device, the deionized water preparation device and the reducing agent adding device are sequentially communicated, the storage bin is provided with a stirring mechanism, the storage bin is used for storing a reducing agent raw material after dissolution, and the filtering device is located between the reducing agent nozzle and the storage bin and communicated with a reducing agent pipeline.
The flue gas treatment system for the carbonization production of the lithium battery cathode material further comprises a reducing agent adjusting module, the reducing agent adjusting module comprises a detection chimney and a flow adjusting device, the detection chimney is electrically connected with the flow adjusting device, the detection chimney is used for detecting flue gas parameters after treatment, and the flow adjusting device can control the flow of the reducing agent pipeline.
The flue gas treatment system for the carbonization production of the lithium battery cathode material further comprises a safety module, the safety module comprises a temperature control device, a detection pressure relief device, an ignition recovery device and a leakage stopping device, the detection pressure relief device is communicated with the treatment furnace, the ignition recovery device is connected with the combustion spray gun and used for reigniting the treatment furnace after flameout, and the leakage stopping device is connected with the natural gas pipe and used for detecting the leakage condition of the natural gas pipe and closing the combustion spray gun and the natural gas pipe.
Wherein the reducing agent is one or more of urea, ammonia water or liquid ammonia.
The implementation of the utility model has the following beneficial effects:
the smoke treatment system for the carbonization production of the lithium battery cathode material is provided with a treatment furnace, a natural gas pipe, a combustion-supporting pipe, a combustion spray gun and a reducing agent spray gun, and the negative lithium battery needs to be protected by introducing nitrogen in the production process, so that the treatment furnace contains a large amount of nitrogen, and if tar is to be treated by combustion, a large amount of air and natural gas need to be introduced for combustion, wherein the natural gas pipe is used for filling natural gas into the treatment furnace, the combustion-supporting pipe is used for filling air into the treatment furnace, the air and the natural gas are mixed in the combustion spray gun and then enter the treatment furnace for combustion, and therefore the treatment of the tar is completed. The reducing agent spray gun fills the reducing agent into the treatment furnace, nitrogen oxide is reduced into nitrogen and water under the action of the reducing agent, and the water is evaporated and discharged along with the nitrogen and the flue gas, so that the aim of treating the nitrogen oxide is fulfilled.
In addition, the air introduced from the cooling air pipe has the effect of cooling flue gas, under the condition that a reducing agent is not used, the air introduced from the cooling air pipe is more, and after the reducing agent is used, the reducing agent is in a solution state and can also play a cooling role, so that the burden of air cooling is reduced, the air flow and the fan power in the cooling air pipe are reduced, and the effects of environmental protection and energy conservation are achieved.
Meanwhile, the flue gas treatment system for the carbonization production of the lithium battery cathode material is also provided with a safety module, wherein the safety module comprises a detection pressure relief device, an ignition recovery device and a leakage shutdown device, the detection pressure relief device can actively detect the pressure in the treatment furnace, and when the pressure in the treatment furnace exceeds a safety threshold value, the exhaust air volume is increased to actively relieve the pressure; when flameout and combustion incapability occur in the treatment furnace, the ignition recovery device restarts the combustion spray gun to enable the combustion in the treatment furnace to be combusted again; the leakage stopping device can detect dangerous gases such as natural gas, and when the natural gas pipe leaks, the leakage stopping device can automatically alarm and stop the combustion spray gun and cut off the supply of the natural gas, so that the safety of a working environment is ensured. Therefore, the utility model also has the advantages of safety and reliability.
Furthermore, the flue gas treatment system for the carbonization production of the lithium battery cathode material is also provided with a reducing agent adjusting module, the reducing agent adjusting module comprises a detection chimney and a flow adjusting device, the detection chimney can be connected with a data monitoring system of an environmental protection department, the parameters of the flue gas discharged by the treatment furnace are monitored on line, the concentration and the total amount of the nitrogen oxide can be known in real time, and the flow adjusting device can adjust the concentration of a reducing agent solution in real time according to the detected data, so that the emission of the nitrogen oxide is ensured to reach the standard.
Therefore, the utility model can simultaneously treat tar and nitrogen oxide generated in the production process of the negative lithium battery, has the advantages of simplicity, high efficiency, environmental protection, energy conservation, low cost and full-automatic operation, can also automatically protect the operation of a system, has the advantages of automatic adjustment, safety and reliability, and can be combined with a national online monitoring system to achieve the effect of automatic adjustment treatment.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a flue gas treatment system for carbonization production of a negative electrode material of a lithium battery in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a flue gas treatment system for carbonization production of a negative electrode material of a lithium battery in accordance with the present invention;
FIG. 3 is a schematic structural view of a process furnace, a first process module and a second process module according to a first embodiment of the present invention;
FIG. 4 is a schematic structural view of a treating furnace, a first treating module and a second treating module according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the utility model is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the utility model.
Referring to fig. 1, the embodiment of the utility model discloses a flue gas treatment system for carbonization production of a lithium battery anode material, which can be applied to production lines of a roller kiln, a tunnel kiln, a rotary furnace and the like for production of the lithium battery anode material. The flue gas processing system of lithium cell cathode material carbonization production is including handling stove 1, first processing module 2, second processing module 3 and module 4 of discharging fume, handle stove 1 and lithium cell cathode material's high temperature sintering section intercommunication, the flue gas that the high temperature sintering section produced can concentrate in handling stove 1, wherein harmful flue gas includes tar and nitrogen oxide. The first processing module 2 with processing furnace 1 is connected, first processing module 2 with second processing module 3 is used for the coprocessing flue gas in the processing furnace 1, wherein first processing module 2 is used for handling tar, second processing module 3 is used for handling nitrogen oxide. Because a large amount of nitrogen is needed to protect the raw materials during high-temperature sintering, and a large amount of nitrogen exists in the treatment furnace 1, measures need to be taken to enable the treatment furnace 1 to be capable of fully combusting so as to treat tar. The first treatment module 2 comprises a natural gas pipe 21, a combustion-supporting pipe 22 and a combustion spray gun 23, the natural gas pipe 21 is communicated with an external natural gas source and used for filling natural gas, the natural gas is filled to provide combustible substances, the combustion-supporting pipe 22 is communicated with the external combustion-supporting gas source and used for filling combustion-supporting air, the combustion-supporting air is filled to provide the combustion-supporting substances, the natural gas pipe 21 is communicated with the combustion-supporting pipe 22 and communicated with the combustion spray gun 23, the natural gas and the combustion-supporting air can be mixed in the combustion spray gun 23, the combustion spray gun 23 is communicated with the treatment furnace 1, and the combustion spray gun 23 can ignite the natural gas in the treatment furnace 1. This measure enables the combustion in the treatment furnace 1 to be sufficient, and the tar can be treated by a sufficient combustion method.
And the smoke exhaust module 4 is communicated with the rear end of the treatment furnace 1 and is used for exhausting the treated smoke. The second treatment module 3 comprises a reducing agent spray gun 31, and the reducing agent spray gun 31 is inserted into the treatment furnace 1 to charge the treatment furnace 1 with a reducing agent solution, wherein the reducing agent solution is charged so that nitrogen oxides are subjected to a reduction reaction under a high-temperature combustion condition to reduce the nitrogen oxides into nitrogen and water. In order to sufficiently react nitrogen oxides, the reducing agent injection lance 31 and the combustion injection lance 23 are preferably provided in the treatment furnace 1 at a position away from the rear end of the treatment furnace 1, i.e., a sufficient space is reserved for combustion and reduction reactions. Meanwhile, since the reducing agent solution sprayed from the reducing agent spray gun 31 is liquid and the reduction reaction also generates water vapor, the reducing agent spray gun 31 should be kept at a certain distance from the combustion spray gun 23 in order to avoid affecting the treatment of tar by not affecting the combustion in the treatment furnace 1. Preferably, the reducing agent is one or more of urea, ammonia water or liquid ammonia, and for convenience of treatment, a urea solution obtained by dissolving urea in water is preferably used as the reducing agent solution in the present invention.
In order to cool off flue gas in the treatment furnace 1 makes the temperature of flue gas can accord with the exhaust requirement, the flue gas processing system of lithium cell negative pole material carbonization production still includes cooling air pipe 24, cooling air pipe 24 and outside normal atmospheric temperature air source or low temperature air source intercommunication, cooling air pipe 24 inserts inside the treatment furnace 1, can be right temperature in the treatment furnace 1 is controlled and is cooled off.
The embodiment of the utility model has the following beneficial effects:
the flue gas treatment system for the carbonization production of the lithium battery cathode material is provided with a treatment furnace 1, a natural gas pipe 21, a combustion-supporting pipe 22, a combustion spray gun 23 and a reducing agent spray gun 31, because the cathode lithium battery needs to be protected by introducing nitrogen gas in the production process, the treatment furnace 1 contains a large amount of nitrogen gas, if tar is to be treated by combustion, a large amount of air and natural gas need to be introduced for combustion, wherein the natural gas pipe 21 fills natural gas into the treatment furnace 1, the combustion-supporting pipe 22 fills air into the treatment furnace 1, the air and the natural gas are mixed in the combustion spray gun 23 and then enter the treatment furnace 1 for combustion, and therefore the treatment of the tar is completed. The reducing agent spray gun 31 fills the reducing agent into the treatment furnace 1, nitrogen oxide is reduced into nitrogen and water under the action of the reducing agent, and the water is evaporated and discharged along with the nitrogen and the flue gas, so that the aim of treating the nitrogen oxide is fulfilled. Therefore, the method can simultaneously treat tar and nitric oxide generated in the production process of the negative lithium battery, and has the advantages of high efficiency and environmental protection.
Referring to fig. 3, the treatment furnace 1 is divided into a first section 11, a middle section 12 and an end section 13. The end section 13 of handling stove 1 is close to smoke discharging module 4, the first section 11 of handling stove 1 is kept away from smoke discharging module 4, the middle section 12 of handling stove 1 is in between the first section 11 and the end section 13 of handling stove 1, in order to make the burning abundant, burning spray gun 23 is located and is close to the position of the first section 11 or the middle section 12 of handling stove 1, in order not to influence the burning and make the reduction reaction abundant, reducing agent spray gun 31 is located the position that the first section 11 of handling stove 1 leans on back or middle section 12. In this embodiment, the combustion lance 23 is disposed in the middle of the first section 11 and the middle section 12 of the treatment furnace 1, and the reducing agent lance 31 is disposed at a position behind the first section 11 and behind the middle section 12, and is kept at a certain distance from the combustion lance 23. In combustion, the temperature range in the treatment furnace 1 is 750-1100 ℃, which is the preferable temperature for the reduction reaction, and preferably, the combustion lance 23 and the reducing agent lance 31 are located on the same side of the treatment furnace 1, so that the tar can be treated by combustion of natural gas, and the preferable reaction temperature can be provided for the reduction reaction, so that the reduction reaction can be completed quickly and fully.
The air introduced from the cooling air pipe 24 has the function of cooling flue gas, under the condition that a reducing agent is not used, the air introduced from the cooling air pipe 24 is more, and after the reducing agent is used, the reducing agent is in a solution state and can also play a cooling role, so that the burden of air cooling is reduced, the air flow and the fan power in the cooling air pipe 24 are reduced, and the effects of environmental protection and energy conservation are achieved.
Therefore, the combustion reaction in the treatment furnace 1 can provide better reaction conditions for the reduction reaction, and the reducing agent solution participating in the reaction in the reduction reaction and the water generated after the reaction can cool the flue gas combusted in the treatment furnace 1, so that the introduction of cooling air is reduced, and the reducing agent solution and the water have the synergistic effect, and the treatment efficiency is higher.
In order not to affect the initial combustion reaction and the reduction reaction, the cooling air pipe 24 is located at the opposite side of the treatment furnace 1 from the reducing agent injection lance 31, so that the cooling air pipe 24 is spaced from the combustion injection lance 23 and the reducing agent injection lance 31 by a sufficient distance, so that the cooling air does not affect the combustion reaction and the reduction reaction when being sprayed, and the reaction space and the reaction time are ensured.
In order to spray the reducing agent far enough, the second processing module 3 further includes a compressed air pipe 32 and a reducing agent pipe 33, the compressed air pipe 32 and the reducing agent pipe 33 are connected to the reducing agent spray gun 31 at the same time, and the compressed air pipe 32 is used for providing high-pressure air to mix and spray the reducing agent in the reducing agent pipe 33, so as to achieve the atomization effect. In order to protect the whole system, the flue gas treatment system for the carbonization production of the lithium battery cathode material further comprises a pretreatment module 5, wherein the pretreatment module 5 comprises a deionized water preparation device 51, a storage bin 52, a filtering device 53 and a reducing agent adding device 54 which are sequentially communicated, the deionized water preparation device 51 is used for removing metal ions such as calcium ions, magnesium ions and the like in tap water, so that the probability of agglomeration accumulation phenomenon generated when the reducing agent raw material is contacted with water is reduced, the reducing agent pipeline 33 can smoothly operate, the urea adding device 54 is used for adding a reducing agent to dissolve the reducing agent in deionized water, the storage bin 52 is used for storing the dissolved reducing agent raw material, and in order to enable the reducing agent solution not to be easily crystallized, the storage bin 52 is provided with a stirring mechanism for stirring the reducing agent solution. The filtering device 53 is used for filtering the reducing agent solution, so as to prevent impurities or crystallized reducing agent from entering the reducing agent pipeline 33 and further blocking the reducing agent spray gun 31. The filter device 53 is located between the reductant nozzle and the storage bin 52 and communicates with the reductant line 33.
Preferably, the treatment furnace 1 is a horizontal structure, and the first section 11, the middle section 12 and the final section 13 are horizontally arranged. The horizontal structure has better equipment stability, simple structure moreover, and shared layer height is lower, can reduce the whole height of the flue gas processing system of lithium cell cathode material carbonization production, installation and maintenance cost are lower.
Referring to fig. 2 and 4, in other embodiments, the treatment furnace 1 may also be a vertical structure, and the first section 11, the middle section 12 and the final section 13 are vertically arranged, because the flue gas is lifted from bottom to top, so that the first section 11 is located at the lower part of the treatment furnace 1, and the flue gas enters from the first section 11, rises to the middle section 12, and finally is discharged from the final end. The combustion spray gun 23 is arranged at a position close to the first section 11 or the middle section 12, and the reducing agent spray gun 31 is arranged at a position where the first section 11 deviates towards the direction of the last section 13 or a position where the middle section 12 deviates towards the direction of the last section 13. The bottom of the first section 11 is provided with a drain outlet 14, so that the redundant or crystallized reducing agent solution can be discharged from the drain outlet 14 by utilizing gravity, a better sewage discharging effect is achieved, and meanwhile, the impurity in the treatment furnace 1 is less, and the reaction efficiency is ensured. In order to prevent because forget to close the drain 14 leads to accidents such as flame leakage or even explosion, the other safety feedback device 15 that is equipped with of drain 14, safety feedback device 15 is used for detecting opening and the condition of closing of drain 14 can send feedback signal, in a single day drain 14 does not have well, safety feedback device 15 can send feedback signal and alarm, informs drain 14 does not close, and control the flue gas processing system automatic shutdown of lithium cell negative pole material carbonization production, thereby guarantees the flue gas processing system of lithium cell negative pole material carbonization production can the safe operation.
The flue gas treatment system of lithium cell cathode material carbonization production still includes reductant adjusting module 6, reductant adjusting module 6 is including detecting chimney 61 and flow control device 62, detect chimney 61 with flow control device 62 electricity is connected, flow control device 62 can control the flow of reductant pipeline 33. The smoke exhaust module 4 is provided with a fan guiding unit 41, an air inlet of the fan guiding unit 41 is communicated with the rear end of the treatment furnace 11, and an air outlet of the fan guiding unit 41 is communicated with the detection chimney 61. The detection chimney 61 can perform real-time data transmission with a pollution discharge online monitoring system of an environmental protection unit, can detect flue gas parameters discharged from an air outlet of the induced draft fan unit 41, and can detect the concentration and the flue gas quantity of the treated nitrogen oxides, if the concentration or the flue gas quantity of the nitrogen oxides exceeds a set value, the flow regulating device 62 can drive the reducing agent pipeline 33 to increase the flow of the reducing agent, so that more reducing agents are sprayed into the treatment furnace 11, and when the concentration or the flue gas quantity of the nitrogen oxides is smaller than the set value, the reducing agent pipeline 33 is controlled to keep or reduce the flow of the reducing agent, so that the concentration and the flue gas quantity of the nitrogen oxides are dynamically controlled, the nitrogen oxides are ensured to reach the emission standard, and the effects of intelligent regulation and energy conservation are achieved.
Meanwhile, the flue gas treatment system for the carbonization production of the lithium battery cathode material is also provided with a safety module 7, wherein the safety module 7 comprises a detection pressure relief device 71, an ignition recovery device 72, a leakage stopping device 73 and a temperature control device 74, the detection pressure relief device 71 can actively detect the pressure in the treatment furnace 1, the system can give an alarm when the pressure in the treatment furnace 1 exceeds 50MPa, and the rotation frequency of the air inducing fan unit 41 can be increased and the air exhausting amount can be increased when the pressure exceeds 100MPa, so that the pressure in the furnace can be reduced; the ignition recovery device 72 can detect the current flame state on line in the operation process, if a flameout condition occurs, a flameout signal is fed back to the control system in real time, and the combustion spray gun 23 is re-ignited, so that the smoke is prevented from being discharged into the air under the condition of not being incinerated or reduced; the leakage stopping device 73 can detect dangerous gases such as natural gas, when the natural gas pipe 21 leaks, the leakage stopping device 73 can automatically give an alarm, control the combustion spray gun 23 to automatically extinguish, and simultaneously cut off the main valve of the natural gas pipe 21, so that accidents caused by further leakage of the gas are avoided, and the safety of the working environment is ensured. The temperature control device 74 can automatically detect the temperature in the processing furnace 1 and control the cooling air duct 24 to control the temperature in the processing furnace 1 so that the temperature is within a safe range. Therefore, the utility model also has the advantages of safety and reliability.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the utility model, and such modifications and enhancements are also considered to be within the scope of the utility model.
Claims (10)
1. The flue gas treatment system for the carbonization production of the lithium battery cathode material is characterized by comprising a treatment furnace, a first treatment module, a second treatment module and a smoke exhaust module, wherein the first treatment module is connected with the treatment furnace, and the first treatment module and the second treatment module are used for treating tar-containing flue gas in the treatment furnace;
the first treatment module comprises a natural gas pipe, a combustion-supporting pipe and a combustion spray gun, the natural gas pipe is communicated with an external natural gas source, the combustion-supporting pipe is communicated with the external combustion-supporting air source, the natural gas pipe is communicated with the combustion-supporting pipe, natural gas and combustion-supporting air are introduced into the combustion spray gun, and the combustion spray gun is communicated with the treatment furnace;
the first treatment module further comprises a cooling air pipe, the cooling air pipe is communicated with an external normal-temperature air source or low-temperature air source, and the cooling air pipe is connected into the treatment furnace;
the smoke exhaust module is communicated with the rear end of the treatment furnace and is used for exhausting the treated smoke;
the second treatment module comprises a reducing agent spray gun, the reducing agent spray gun is inserted into the treatment furnace to fill reducing agent solution into the treatment furnace, and the reducing agent spray gun and the combustion spray gun are arranged at positions of the treatment furnace far away from the rear end of the treatment furnace.
2. The system of claim 1, wherein the furnace is divided into a first section, a middle section and a last section, the last section is close to the smoke exhaust module, the first section is far away from the smoke exhaust module, the middle section is located between the first section and the last section, the combustion spray gun is arranged at a position close to the first section or the middle section, and the reducing agent spray gun is arranged at a position where the first section deviates towards the last section or a position where the middle section deviates towards the last section.
3. The system for treating the flue gas generated by carbonizing the negative electrode material of the lithium battery according to claim 2, wherein the combustion spray gun and the reducing agent spray gun are located on the same side in the treatment furnace, and the cooling air pipe is located on the opposite side in the treatment furnace from the reducing agent spray gun.
4. The system for treating the flue gas generated by carbonizing the negative electrode material of the lithium battery as claimed in claim 2, wherein the second treatment module further comprises a compressed air pipeline and a reducing agent pipeline, and the compressed air pipeline and the reducing agent pipeline are simultaneously connected into the reducing agent spray gun.
5. The system for treating the flue gas generated by carbonizing the negative electrode material for the lithium battery of any one of claims 1 to 4, wherein the treatment furnace has a horizontal structure.
6. The system for treating the flue gas generated by carbonizing the negative electrode material of the lithium battery as claimed in any one of claims 1 to 4, wherein the treatment furnace is of a vertical structure, a first section of the treatment furnace is positioned at the lower part of the treatment furnace, and a sewage discharge outlet is formed in the bottom of the first section;
and a safety feedback device is arranged beside the sewage draining exit and is used for detecting the opening and closing conditions of the sewage draining exit and sending a feedback signal.
7. The system for treating the flue gas generated by carbonizing the negative electrode material of the lithium battery as claimed in claim 4, further comprising a pretreatment module, wherein the pretreatment module comprises a deionized water preparation device, a reducing agent adding device, a storage bin with a stirring mechanism and a filtering device, the deionized water preparation device, the reducing agent adding device, the storage bin and the filtering device are sequentially communicated, the storage bin is used for storing the dissolved reducing agent raw material, and the filtering device is located between the reducing agent spray gun and the storage bin and is communicated with the reducing agent pipeline.
8. The system for processing the flue gas generated by carbonizing the negative electrode material of the lithium battery as claimed in claim 4, further comprising a reducing agent adjusting module, wherein the reducing agent adjusting module comprises a detection chimney and a flow adjusting device, the detection chimney is electrically connected with the flow adjusting device, the detection chimney is used for detecting the processed flue gas parameters, and the flow adjusting device can control the flow of the reducing agent pipeline.
9. The system for processing the flue gas generated by carbonizing the negative electrode material of the lithium battery as claimed in claim 1, further comprising a safety module, wherein the safety module comprises a temperature control device, a detection pressure relief device, an ignition recovery device and a leakage shutdown device, the detection pressure relief device is communicated with the processing furnace, the ignition recovery device is connected with the combustion spray gun and used for reigniting the processing furnace after flameout, and the leakage shutdown device is connected with the natural gas pipe and used for detecting the leakage condition of the natural gas pipe and closing the combustion spray gun and the natural gas pipe.
10. The system for treating the flue gas generated by carbonizing the negative electrode material of the lithium battery according to claim 1, wherein the reducing agent is one or more of urea, ammonia water or liquid ammonia.
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| CN202121791183.5U CN216431754U (en) | 2021-08-02 | 2021-08-02 | Flue gas treatment system for carbonization production of lithium battery cathode material |
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| CN202121791183.5U CN216431754U (en) | 2021-08-02 | 2021-08-02 | Flue gas treatment system for carbonization production of lithium battery cathode material |
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