CN115682746B - Negative electrode material graphitizing furnace system and process easy to collect and treat tail gas - Google Patents
Negative electrode material graphitizing furnace system and process easy to collect and treat tail gas Download PDFInfo
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Abstract
The invention provides a negative electrode material graphitizing furnace system and a process for easily carrying out tail gas collection treatment, wherein the negative electrode material graphitizing furnace system comprises a graphitizing furnace device, a smoke collecting main pipe in a heating stage, a smoke collecting main pipe in a cooling stage, a dust remover, a variable-frequency smoke discharging induced draft fan, a spray tower and a PLC component; the graphitizing furnace device comprises a graphitizing furnace body, a smoke exhaust hole, a side wall, a smoke collecting chamber, a furnace cover, a flue, an electric gate valve and a micro differential pressure transmitter, and comprises a plurality of groups of graphitizing furnace devices which are arranged in parallel in a system; the PLC is adopted to control the frequency conversion smoke exhaust induced draft fan and other parts, so that the labor intensity of field operators is reduced, the corrosion of a furnace cover is reduced, the integral sealing effect of the furnace body is improved, the dissipation of tail gas into a factory building is reduced, and the quality of a working environment is improved; meanwhile, the heating stage and the cooling stage are respectively processed, so that the working efficiency of the processing is improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of carbon material treatment, in particular to a negative electrode material graphitization furnace system and process easy to collect and treat tail gas.
Background
The cathode material is an important raw material of the lithium ion battery, the main component is artificial high-purity graphite, and the large-scale production in the industry at present mainly depends on an Acheson graphitization furnace, so that the cathode material is the graphitization furnace most widely applied at present. The artificial graphite is pre-carbonized at 1200 deg.c in roasting furnace to form semi-product and high temperature treatment at 2300 deg.c to form graphite product.
The graphitization furnace not only needs to electrify and heat pre-carbonized artificial graphite in the production process, but also heats calcined petroleum coke and carbon black serving as heat insulation materials, and the raw materials and the heat insulation materials can generate a large amount of tail gas in the heating and cooling processes, and the main components in the tail gas are carbon ash smoke dust, sulfur dioxide, carbon monoxide, carbon dioxide, benzopyrene and the like, so that the working environment and the natural environment can be seriously polluted if the emission of the raw materials and the heat insulation materials is not controlled or treated.
At present, the main flow of tail gas of a graphitizing furnace is collected into an arc-shaped smoke hood arranged on the graphitizing furnace, and a pipeline is arranged on the smoke hood and used for pumping and processing the tail gas collected in the smoke hood. The process of connecting the pipelines needs manual operation, so that the labor intensity is high and dangerous; because the tail gas contains sulfur dioxide, the tail gas has corrosion to the fume hood and needs to be frequently maintained and replaced.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a negative electrode material graphitization furnace system and a process which are easy to collect and treat tail gas.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a negative electrode material graphitizing furnace system easy to carry out tail gas collection treatment comprises a graphitizing furnace device, a smoke collecting main pipe in a heating stage, a smoke collecting main pipe in a cooling stage, a dust remover, a variable-frequency smoke discharging induced draft fan, a spray tower and a PLC component;
the graphitizing furnace device comprises a graphitizing furnace body, a smoke exhaust hole, a side wall, a smoke collecting chamber, a furnace cover, a flue, an electric gate valve and a micro differential pressure transmitter; the graphitizing furnace device comprises a plurality of groups of graphitizing furnace devices which are arranged in parallel in the system;
the two sides of the graphitizing furnace body are provided with side walls, smoke exhaust holes are formed in the side walls, a sealed cavity-shaped smoke collecting chamber is formed in the outer side of the side walls, a furnace cover is covered above the graphitizing furnace body, the smoke exhaust holes are communicated with the graphitizing furnace body and the smoke collecting chamber, two ends of the graphitizing furnace body are respectively provided with a flue communicated with the smoke collecting chamber, and the flues at the two ends are respectively connected to a heating stage smoke collecting main pipe and a cooling stage smoke collecting main pipe; a micro-pressure transmitter is also arranged in the smoke collecting chamber;
the smoke collecting main pipe in the temperature rising stage is sequentially connected to the dust remover, and the variable-frequency smoke discharging induced draft fan passes through a chimney after spraying the tower;
the smoke collecting main pipe in the cooling stage is sequentially connected to a dust remover, a variable-frequency smoke discharging induced draft fan and then tail gas is connected to a chimney;
and the PLC component is electrically connected with the micro-pressure transmitter and the variable-frequency smoke exhaust induced draft fan.
Furthermore, the micro-pressure transmitter penetrates through the side wall through the pressure taking pipe and stretches into the space below the furnace cover.
Further, a plurality of smoke exhaust holes are arranged at the upper end of the side wall in a transverse mode.
Further, electric gate valves are respectively arranged at the joints of the flue, the heating stage smoke collecting main pipe and the cooling stage smoke collecting main pipe, and the electric gate valves are electrically connected with the PLC component.
Furthermore, the smoke collecting chamber is formed by brick-concrete masonry or concrete pouring.
Further, at least eight groups of graphitizing furnace devices are arranged between the smoke collecting main pipe in the heating stage and the smoke collecting main pipe in the cooling stage.
Furthermore, the inner wall of the furnace cover is sprayed with a high-temperature-resistant acid-corrosion-resistant coating, the outer surface of the furnace cover is coated with aluminum silicate fibers, and a lifting hook is arranged above the furnace cover.
A negative electrode material graphitization furnace process easy to collect and treat tail gas comprises the following steps:
s1: and (3) feeding: adding raw materials into a graphitizing furnace body, wherein the raw materials comprise sulfur-containing compounds, carbon-containing compounds and moisture;
s2: and (3) heating stage reaction: heating the graphitizing furnace body and the raw materials, wherein the raw materials release carbon-containing smoke dust in the graphitizing furnace body, sulfur dioxide generated after sulfur-containing compounds in the raw materials are oxidized, water vapor generated after water in the raw materials is evaporated, carbon monoxide generated after carbon-containing compounds in the raw materials are oxidized, carbon dioxide and benzopyrene substances generated by decomposing residual components of the raw materials at high temperature are combined into first tail gas containing gaseous substances and smoke dust;
s3: and (3) heating stage treatment: opening a corresponding electric gate valve connected to a heating stage smoke collecting main pipe through the PLC component, opening a variable-frequency smoke discharging induced draft fan of the heating stage smoke collecting main pipe, generating negative pressure in a space formed between the inner side of a furnace cover and the surface of a material in a graphitizing furnace body, sucking first tail gas in the heating process into a smoke collecting chamber through a smoke discharging hole, entering a flue, entering the heating stage smoke collecting main pipe through the electric gate valve in an opened state, performing dust fall treatment on the first tail gas through a dust remover, and then pressurizing the first tail gas through the variable-frequency smoke discharging induced draft fan to a spray tower to further adsorb toxic and harmful substances in the first tail gas; finally, discharging the mixture into the atmosphere after reaching the standard through detection; delivering the sewage of the spray tower to a sewage treatment facility for pollution-free treatment;
s4: and (3) cooling stage reaction: in the cooling stage of the graphitizing furnace body, the raw materials still release carbon-containing smoke dust, the volatilization of sulfur-containing compounds, moisture, benzopyrene and the like in the raw materials is completed, and the carbon-containing compounds in the raw materials still generate carbon monoxide and carbon dioxide to form second tail gas;
s5: and (3) cooling stage treatment: the electric gate valve connected to the cooling stage smoke collecting main pipe is opened through the PLC component, the variable-frequency smoke discharging induced draft fan of the cooling stage smoke collecting main pipe is opened, negative pressure is generated in the space formed between the inner side of the furnace cover and the surface of the material in the graphitizing furnace body, second tail gas in the cooling process is pumped into the smoke collecting chamber through the smoke discharging hole, then enters the flue to enter the cooling stage smoke collecting main pipe through the electric gate valve in the opened state, dust fall treatment is carried out on the second tail gas through the dust remover, and then the second tail gas is pressurized and conveyed through the variable-frequency smoke discharging induced draft fan and is discharged into the atmosphere after reaching the detection standards.
Further, in the S3 and S5 processes, the PLC component respectively and independently controls the starting and closing of the electric gate valve and the variable-frequency smoke exhaust induced draft fan which are respectively connected with the two sides of the plurality of graphitization furnace bodies according to the actual reaction conditions of the raw materials in the plurality of graphitization furnace bodies in the system.
Compared with the prior art, the invention has the beneficial effects that: (1) Compared with the conventional graphitizing furnace, the novel furnace body structure of the graphitizing furnace has the advantages that the tail gas collecting process is simpler and more efficient, the labor intensity of field operators is reduced, the corrosion of a furnace cover is reduced, the integral sealing effect of the furnace body is improved, the dissipation of tail gas into a factory building is reduced, and the quality of a working environment is improved; (2) The exhaust gas collecting process adopts a PLC to control a variable-frequency smoke exhaust induced draft fan, and negative pressure is automatically adjusted under the conditions of different exhaust gas flow rates at different temperatures, so that exhaust gas in different states at high temperature and low temperature is respectively treated, and when a plurality of groups of graphitization furnace devices are arranged, the efficient treatment is realized, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the whole system of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the graphitizing furnace body according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of the process flow in embodiment 2 of the present invention;
description of the reference numerals: the graphitizing furnace comprises a graphitizing furnace body, a 2-smoke exhaust hole, a 3-side wall, a 4-smoke collecting chamber, a 5-furnace cover, a 6-flue, a 7-heating stage smoke collecting main pipe, an 8-cooling stage smoke collecting main pipe, a 9-electric gate valve, a 10-dust remover, a 11-variable-frequency smoke exhaust induced draft fan, a 12-spray tower, a 13-micro differential pressure transmitter and a 14-PLC component.
Description of the embodiments
For a further understanding of the objects, construction, features, and functions of the invention, reference should be made to the following detailed description of the preferred embodiments.
Embodiment 1, as shown in fig. 1 and 2, a graphitizing furnace system for anode materials, which is easy to collect and treat tail gas, comprises a graphitizing furnace device, a heating stage fume collecting main pipe 7, a cooling stage fume collecting main pipe 8, a dust remover 10, a variable-frequency fume exhausting induced draft fan 11, a spray tower 12 and a PLC component 14.
The graphitizing furnace device comprises a graphitizing furnace body 1, a smoke exhaust hole 2, a side wall 3, a smoke collecting chamber 4, a furnace cover 5, a flue 6, an electric gate valve 9 and a micro differential pressure transmitter 13; comprises a plurality of groups of graphitizing furnace devices which are arranged in parallel in the system.
The two sides of the graphitizing furnace body 1 are provided with side walls 3, the side walls 3 are provided with smoke exhaust holes 2, the outer sides of the side walls 3 are provided with sealed cavity-shaped smoke collecting chambers 4, a furnace cover 5 is covered above the graphitizing furnace body 1, the smoke exhaust holes 2 are communicated with the graphitizing furnace body 1 and the smoke collecting chambers 4, two ends of the graphitizing furnace body 1 are respectively provided with a flue 6 communicated with the smoke collecting chambers 4, and the flues 6 at the two ends are respectively connected to a heating stage smoke collecting main pipe 7 and a cooling stage smoke collecting main pipe 8; a micropressure transmitter is also arranged in the smoke collecting chamber 4.
The top of the side wall 3 on two sides of the graphitization furnace body 1 is provided with a sand seal groove, and in order to avoid influencing the product quality, the filler in the sand seal groove is heat-insulating material particles and can be recycled.
The smoke collecting main pipe 7 in the heating stage is sequentially connected to a dust remover 10, a variable-frequency smoke discharging induced draft fan 11 and a chimney after a spray tower 12;
the smoke collecting main pipe 8 in the cooling stage is sequentially connected to a dust remover 10, a variable-frequency smoke discharging induced draft fan 11 and then tail gas is connected to a chimney;
the PLC component 14 is electrically connected with the micro-pressure transducer and the variable-frequency smoke exhaust induced draft fan 11.
The micro differential pressure transducer 13 arranged on the smoke collecting chamber 4 measures the hearth pressure in the lower space of the furnace cover 5, the PLC component 14 judges the hearth pressure, and the hearth pressure is compared with the preset ideal pressure ratio to control the frequency of the smoke discharging induced draft fan.
Compared with the conventional graphitization furnace design, the tail gas collecting process is simpler and more efficient, the labor intensity of field operators is reduced, the corrosion of the furnace cover 5 is reduced, the integral sealing effect of the furnace body is improved, the dissipation of tail gas into a factory building is reduced, and the quality of a working environment is improved.
In this embodiment, the micro-pressure transmitter penetrates through the side wall 3 through the pressure taking pipe and extends into the space below the furnace cover 5, so that the pressure in the furnace can be maintained and simultaneously can be controlled by matching with the PLC component 14.
In this embodiment, a plurality of smoke exhaust holes 2 are arranged transversely at the upper end of the side wall 3, and are generally square holes.
In this embodiment, further, the connection parts between the flue 6 and the fume collecting main pipe 7 in the heating stage and the connection parts between the flue 6 and the fume collecting main pipe 8 in the cooling stage are respectively provided with an electric gate valve 9, and the electric gate valves 9 are electrically connected with the PLC component 14.
Further in this embodiment, the smoke collecting chamber 4 is formed by brick-concrete masonry or concrete casting.
In this embodiment, at least eight groups of graphitizing furnace devices are arranged between the fume collecting main pipe 7 in the heating stage and the fume collecting main pipe 8 in the cooling stage.
In this embodiment, further, a high temperature resistant acid corrosion resistant coating is sprayed on the inner wall of the furnace cover 5, aluminum silicate fibers are coated on the outer surface of the furnace cover to improve heat insulation performance, and a lifting hook is arranged above the furnace cover to facilitate lifting.
In example 2, as shown in fig. 3, graphitization furnace apparatuses generally exist in the form of furnace groups, at least one group has 8 or more, and in order to improve production efficiency, different furnaces in the same group are in different production stages, and the following 2 cases are mainly used for tail gas.
A negative electrode material graphitization furnace process easy to collect and treat tail gas comprises the following steps:
s1: and (3) feeding: adding raw materials into a graphitizing furnace body 1, wherein the raw materials comprise sulfur-containing compounds, carbon-containing compounds and moisture;
s2: and (3) heating stage reaction: heating the graphitizing furnace body 1 and raw materials, wherein the raw materials release carbon-containing smoke dust in the graphitizing furnace body 1, sulfur dioxide generated after sulfur-containing compounds in the raw materials are oxidized, water vapor generated after water in the raw materials is evaporated, carbon monoxide generated after the carbon-containing compounds in the raw materials are oxidized, carbon dioxide and benzopyrene substances generated by decomposing residual components of the raw materials at high temperature are combined into first tail gas containing gaseous substances and smoke dust;
s3: and (3) heating stage treatment: opening a corresponding electric gate valve 9 connected to the heating stage smoke collecting main pipe 7 through a PLC component 14, opening a variable-frequency smoke discharging induced draft fan 11 of the heating stage smoke collecting main pipe 7, generating negative pressure in a space formed between the inner side of a furnace cover 5 and the surface of a material in the graphitizing furnace body 1, sucking first tail gas in the heating process into the smoke collecting chamber 4 through a smoke discharging hole 2, entering a flue 6, entering the heating stage smoke collecting main pipe 7 through the electric gate valve 9 in an open state, performing dust fall treatment on the first tail gas through a dust remover 10, and then pressurizing through the variable-frequency smoke discharging induced draft fan 11 to send the first tail gas to a spray tower 12 for further adsorption treatment on toxic and harmful substances in the first tail gas; finally, discharging the mixture into the atmosphere after reaching the standard through detection; the sewage of the spray tower 12 is sent to a sewage treatment facility for pollution-free treatment;
s4: and (3) cooling stage reaction: in the cooling stage of the graphitizing furnace body 1, the raw materials still release carbon-containing smoke dust, the volatilization of sulfur-containing compounds, moisture, benzopyrene and the like in the raw materials is completed, and the carbon-containing compounds in the raw materials still generate carbon monoxide and carbon dioxide to form second tail gas;
s5: and (3) cooling stage treatment: the corresponding electric gate valve 9 connected to the cooling stage smoke collecting main pipe 8 is opened through the PLC component 14, the variable-frequency smoke discharging induced draft fan 11 of the cooling stage smoke collecting main pipe 8 is opened, negative pressure is generated in the space formed between the inner side of the furnace cover 5 and the surface of the material in the graphitizing furnace body 1, second tail gas in the cooling process is pumped into the smoke collecting chamber 4 through the smoke discharging hole 2, then enters the flue 6, enters the cooling stage smoke collecting main pipe 8 through the electric gate valve 9 in the opened state, and the second tail gas is subjected to dust fall treatment through the dust remover 10, is pressurized and conveyed through the variable-frequency smoke discharging induced draft fan 11, and is discharged into the atmosphere after reaching the detection standard.
The first tail gas and the second tail gas are different in composition components, different paths are used for processing, the whole process is automatically processed by the PLC component 14, the processing efficiency is fully improved, and the environmental pollution is reduced.
In this patent, the heating stage and the cooling stage of the graphitizing furnace body 1 are both performed by a temperature measuring device preset in the graphitizing furnace body 1 to obtain the temperature of the graphitizing furnace body 1.
In the embodiment, further, in the processes of S3 and S5, the PLC component 14 separately controls the start and close of the electric gate valve 9 and the variable-frequency smoke exhaust induced draft fan 11 respectively connected to two sides of the plurality of graphitization furnace bodies 1 according to actual reaction conditions of the raw materials in the plurality of graphitization furnace bodies 1 in the system.
The exhaust gas quantity of each furnace is calculated according to the exhaust gas quantity of 100m3/h produced by 100 tons/year unit, the ventilation exhaust gas quantity on each side wall 3 is half of the total quantity, the exhaust gas holes 2 are calculated according to the outflow speed of 10m/s, the exhaust gas holes 2 are preferably square holes, the construction is convenient, the lower surface is required to be not less than 200mm away from the upper surface of the heat preservation material, the clear distance between every two exhaust gas holes 2 is not less than 2 times of the width of the exhaust gas holes 2 for ensuring the strength, and the height of each exhaust gas hole 2 is 1-2 times of the width and is optimal.
The length and the height of the smoke collecting chamber 4 are flush with the length and the height of the furnace body, the internal width of the smoke collecting chamber 4 should ensure that the flow speed of the tail gas is not higher than 5m/s, and the cross section area of the joint of the smoke collecting chamber and the smoke collecting main pipe should ensure that the flow speed of the tail gas is not higher than 10m/s. And the whole flow resistance is checked by professional software to select the diameter of the adaptive smoke collecting main pipe.
The invention has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. A negative electrode material graphitization furnace process easy to collect and treat tail gas is characterized in that: including easily carrying out negative pole material graphitization stove system of tail gas collection treatment, easily carry out negative pole material graphitization stove system of tail gas collection treatment includes:
the device comprises a graphitizing furnace device, a smoke collecting main pipe in a heating stage, a smoke collecting main pipe in a cooling stage, a dust remover, a variable-frequency smoke discharging induced draft fan, a spray tower and a PLC component;
the graphitizing furnace device comprises a graphitizing furnace body, a smoke exhaust hole, a side wall, a smoke collecting chamber, a furnace cover, a flue, an electric gate valve and a micro differential pressure transmitter; the graphitizing furnace device comprises a plurality of groups of graphitizing furnace devices which are arranged in parallel in the system;
the two sides of the graphitizing furnace body are provided with side walls, smoke exhaust holes are formed in the side walls, a sealed cavity-shaped smoke collecting chamber is formed in the outer side of the side walls, a furnace cover is covered above the graphitizing furnace body, the smoke exhaust holes are communicated with the graphitizing furnace body and the smoke collecting chamber, two ends of the graphitizing furnace body are respectively provided with a flue communicated with the smoke collecting chamber, and the flues at the two ends are respectively connected to a heating stage smoke collecting main pipe and a cooling stage smoke collecting main pipe; a micro-pressure transmitter is also arranged in the smoke collecting chamber;
the smoke collecting main pipe in the temperature rising stage is sequentially connected to the dust remover, and the variable-frequency smoke discharging induced draft fan passes through a chimney after spraying the tower;
the smoke collecting main pipe in the cooling stage is sequentially connected to a dust remover, a variable-frequency smoke discharging induced draft fan and then tail gas is connected to a chimney;
the PLC component is electrically connected with the micro-pressure transmitter and the variable-frequency smoke exhaust induced draft fan;
the specific process comprises the following steps:
s1: and (3) feeding: adding raw materials into a graphitizing furnace body, wherein the raw materials comprise sulfur-containing compounds, carbon-containing compounds and moisture;
s2: and (3) heating stage reaction: heating the graphitizing furnace body and the raw materials, wherein the raw materials release carbon-containing smoke dust in the graphitizing furnace body, sulfur dioxide generated after sulfur-containing compounds in the raw materials are oxidized, water vapor generated after water in the raw materials is evaporated, carbon monoxide generated after carbon-containing compounds in the raw materials are oxidized, carbon dioxide and benzopyrene substances generated by decomposing residual components of the raw materials at high temperature are combined into first tail gas containing gaseous substances and smoke dust;
s3: and (3) heating stage treatment: opening a corresponding electric gate valve connected to a heating stage smoke collecting main pipe through the PLC component, opening a variable-frequency smoke discharging induced draft fan of the heating stage smoke collecting main pipe, generating negative pressure in a space formed between the inner side of a furnace cover and the surface of a material in a graphitizing furnace body, sucking first tail gas in the heating process into a smoke collecting chamber through a smoke discharging hole, entering a flue, entering the heating stage smoke collecting main pipe through the electric gate valve in an opened state, performing dust fall treatment on the first tail gas through a dust remover, and then pressurizing the first tail gas through the variable-frequency smoke discharging induced draft fan to a spray tower to further adsorb toxic and harmful substances in the first tail gas; finally, discharging the mixture into the atmosphere after reaching the standard through detection; delivering the sewage of the spray tower to a sewage treatment facility for pollution-free treatment;
s4: and (3) cooling stage reaction: in the cooling stage of the graphitizing furnace body, the raw materials still release carbon-containing smoke dust, the sulfur-containing compound and the water in the raw materials and benzopyrene are volatilized, and the carbon-containing compound in the raw materials still generates carbon monoxide and carbon dioxide to form second tail gas;
s5: and (3) cooling stage treatment: the electric gate valve connected to the cooling stage smoke collecting main pipe is opened through the PLC component, the variable-frequency smoke discharging induced draft fan of the cooling stage smoke collecting main pipe is opened, negative pressure is generated in the space formed between the inner side of the furnace cover and the surface of the material in the graphitizing furnace body, second tail gas in the cooling process is pumped into the smoke collecting chamber through the smoke discharging hole, then enters the flue to enter the cooling stage smoke collecting main pipe through the electric gate valve in the opened state, dust fall treatment is carried out on the second tail gas through the dust remover, and then the second tail gas is pressurized and conveyed through the variable-frequency smoke discharging induced draft fan and is discharged into the atmosphere after reaching the detection standards.
2. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: in the S3 and S5 processes, the PLC component respectively and independently controls the starting and closing of the electric gate valve and the variable-frequency smoke discharging induced draft fan which are respectively connected with the two sides of the plurality of graphitization furnace bodies according to the actual reaction conditions of the raw materials in the plurality of graphitization furnace bodies in the system.
3. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: the micro-pressure transmitter penetrates through the side wall through the pressure taking pipe and stretches into the space below the furnace cover.
4. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: and a plurality of smoke exhaust holes are transversely arranged at the upper end of the side wall.
5. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: the flue with the stage of rising temperature collection house steward, the stage of lowering temperature collection house steward junction sets up electronic gate valve respectively, electronic gate valve with PLC part electric connection.
6. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: the smoke collecting chamber is formed by brick-concrete masonry or concrete pouring.
7. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: at least eight groups of graphitizing furnace devices are arranged between the smoke collecting main pipes in the heating stage and the smoke collecting main pipes in the cooling stage.
8. The anode material graphitizing furnace process easy to carry out tail gas collection treatment according to claim 1, wherein: the inner wall of the furnace cover is sprayed with a high-temperature-resistant acid corrosion-resistant coating, the outer surface of the furnace cover is coated with aluminum silicate fibers, and a lifting hook is arranged above the furnace cover.
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| CN115682746A (en) | 2023-02-03 |
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