CN114684806B - Carbon composite rotary heating process and device - Google Patents
Carbon composite rotary heating process and device Download PDFInfo
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- CN114684806B CN114684806B CN202210437389.0A CN202210437389A CN114684806B CN 114684806 B CN114684806 B CN 114684806B CN 202210437389 A CN202210437389 A CN 202210437389A CN 114684806 B CN114684806 B CN 114684806B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 132
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000010439 graphite Substances 0.000 claims abstract description 85
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 85
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 74
- 239000010959 steel Substances 0.000 claims abstract description 74
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 77
- 238000007599 discharging Methods 0.000 claims description 38
- 239000011810 insulating material Substances 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010000 carbonizing Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 description 9
- 238000003763 carbonization Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
- F27B7/3205—Charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
Abstract
The invention relates to a carbon composite rotary heating process and a device, wherein the device comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod and an externally heating heat-resistant steel rotary cylinder, the self-heating graphite tube rotary cylinder is connected with the externally heating heat-resistant steel rotary cylinder in series, the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with electric slip rings, the two ends of the graphite tube are electrified and heated through the power receiving electrode rod, the inner cylinder of the externally heating heat-resistant steel rotary cylinder is a heat-resistant steel cylinder, and the heat-resistant steel cylinder is connected with the graphite tube through an electric insulation short tube. The invention adopts a heat-resistant steel cylinder external heating mode to complete low-temperature heating at a low temperature section, heats the carbon material from room temperature to 500-1000 ℃, adopts carbide graphite self-heating at a high temperature section, and heats the material to more than 2000 ℃. The graphite tube and the heat-resistant steel rotary cylinder are integrated into a whole to finish the heating of the carbon material from low temperature to high temperature. The heat efficiency of the invention is more than 2 times of that of the tunnel kiln or the push plate kiln, and the yield is about 2 times of that of the tunnel kiln or the push plate kiln under the same investment condition.
Description
Technical Field
The invention relates to industrial furnace equipment, in particular to a carbon composite rotary heating process and a device.
Background
The cathode carbon material in the current battery material is generally required to be coated with petroleum coke or asphalt coke, the coated cathode carbon material is subjected to low-temperature carbonization, graphitization and coating after graphitization, and is further subjected to high-temperature carbonization, the low-temperature carbonization is generally heated by adopting a periodic heating tank or a metal cylinder rotary kiln, the heating temperature is generally not more than 800 ℃, and the metal tank or the cylinder can also finish the heating task at the temperature. Because the metal cylinder is limited by the heating temperature, the maximum allowable heating temperature can only reach 1000 ℃ under the carbonization condition, the high-temperature carbonization temperature is generally required to be 1150-1250 ℃ or even higher, and the pure metal cylinder or the pure metal cylinder rotary kiln cannot complete the heating task. The most common high temperature carbonization furnace at present adopts a tunnel kiln or a push plate kiln, carbon materials are filled into a heating pot body to be heated along with the kiln, the heating mode is that at least 40 percent of heat is given to the pot body to do idle work, and in addition, the cooling energy consumption is increased, and the end result is high equipment complex investment cost and high energy consumption.
Disclosure of Invention
The invention aims to provide a carbon composite rotary heating process and a device, which adopt a mode of integrating a low-temperature heating section and a high-temperature heating section, can finish the cladding, heating and carbonizing processes of a carbon material from low temperature to high temperature at one time, and have the heating temperature range from room temperature to above 2000 ℃, high thermal efficiency and high productivity.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a carbon composite rotary heating process, comprising: the carbon material is firstly sent into a low-temperature section to be heated through a screw feeder, the low-temperature section adopts a heat-resistant steel cylinder external heating mode to heat the carbon material from room temperature to 500-1000 ℃, then the carbon material enters a high-temperature heating section, and the high-temperature heating section adopts a graphite tube self-heating type direct heating mode to heat the material to more than 2000 ℃;
the rotary device is in a downward inclination angle from the charging end to the discharging end, the inclination angle is between 1 and 5 degrees, the rotary device is driven by adopting variable frequency speed regulation, and the speed of conveying materials of the rotary kiln is regulated by regulating the rotating speed.
The process is suitable for coating carbon materials, low-temperature carbonization, high-temperature carbonization and high-temperature and low-temperature heating of other materials.
The device comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod and an externally heating heat-resistant steel rotary cylinder, wherein the self-heating graphite tube rotary cylinder is connected with the externally heating heat-resistant steel rotary cylinder in series, an inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power receiving electrode rod, the inner cylinder of the externally heating heat-resistant steel rotary cylinder is a heat-resistant steel cylinder, and the heat-resistant steel cylinder is connected with the graphite cylinder through an electric insulation short tube.
The self-heating graphite tube rotary cylinder comprises a self-heating graphite tube rotary cylinder, and is characterized by further comprising a feeding fixed end, a discharging fixed end, a self-adapting multi-layer sealing device and a sealing aligning device, wherein the discharging fixed end is connected with the discharging end of the self-heating graphite tube rotary cylinder, the feeding fixed end is connected with the feeding end of the self-heating graphite tube rotary cylinder, the self-adapting multi-layer sealing device is arranged at the joint of the self-heating graphite tube rotary cylinder and the discharging fixed end, and the self-adapting multi-layer sealing device is arranged at the joint of the feeding end and the feeding fixed end of the self-heating graphite tube rotary cylinder or the self-heating heat-resisting steel rotary cylinder through the sealing aligning device.
The discharging fixed end comprises a steel structure shell, a refractory heat-insulating material layer, a gate valve, a rotary discharger and a corrugated discharge expander, wherein the steel structure shell is wrapped outside the refractory heat-insulating material layer, a discharging cavity is formed in the refractory heat-insulating material layer, the discharging end of the self-heating graphite tube rotary cylinder is inserted into the discharging cavity, and the gate valve, the rotary discharger and the corrugated discharge expander are sequentially arranged at the bottom of the discharging cavity.
The feeding fixed end comprises a steel structure shell, a fire-resistant heat-insulating material layer, a screw feeder, a discharging pipe and a gate valve, wherein the steel structure shell is wrapped outside the fire-resistant heat-insulating material layer, a feeding cavity is formed in the fire-resistant heat-insulating material layer, the feeding end of the externally-heated heat-resistant steel rotary drum is inserted into the feeding cavity, the screw feeder is connected with the feeding end of the externally-heated heat-resistant steel rotary drum, the discharging pipe is arranged at the bottom of the feeding cavity, and the gate valve is arranged on the discharging pipe.
The self-adaptive multi-layer sealing device comprises a flexible sealing ring, a graphite sealing ring, an outer fixing tube and an inner sealing tube, wherein the inner sealing tube is connected with a self-heating graphite tube rotary cylinder or an external heating heat-resistant steel rotary cylinder through a sealing aligning device, a multi-layer flexible sealing ring is axially arranged between the inner sealing tube and the outer fixing tube, the graphite sealing ring is arranged at the innermost side of the multi-layer flexible sealing ring, and the outer fixing tube is connected with a discharging fixed end or a feeding fixed end.
The bottom of material loading stiff end and ejection of compact stiff end is installed gyro wheel and track, material loading stiff end and ejection of compact stiff end are connected the weight through wire rope respectively.
The sealing aligning device comprises a distance adjusting screw rod and a ripple expander, the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder is connected with the self-adaptive multi-layer sealing device through the distance adjusting screw rod, and the ripple expander for sealing is further arranged between the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder and the self-adaptive multi-layer sealing device.
The self-heating graphite tube rotary cylinder comprises a graphite tube, a fireproof insulating heat-insulating material layer wrapped on the outer side of the graphite tube and a steel shell fixed on the outer portion of the fireproof insulating heat-insulating material layer.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a heat-resistant steel cylinder external heating mode to complete low-temperature heating at a low temperature section, can heat the carbon material from room temperature to 1000 ℃, adopts the graphite self-heating type at a high temperature section, and can heat the material to more than 2000 ℃. The graphite tube and the heat-resistant steel rotary drum are connected in series and integrated into a whole, so that the carbon material is heated from low temperature to high temperature, and the heating temperature ranges from room temperature to more than 2000 ℃. The heat efficiency of the invention is more than 2 times of that of the tunnel kiln or the push plate kiln, and the yield is about 2 times of that of the tunnel kiln or the push plate kiln under the same investment condition.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the adaptive multi-layer sealing device of the present invention.
In the figure: the device comprises a 1-powered electrode rod, a 2-powered electric brush, a 3-electric slip ring, a 4-explosion-proof valve, a 5-supporting roller set, a 6-transmission system, a 7-graphite pipe, an 8-electric insulation short pipe, a 9-heat-resistant steel cylinder, a 10-externally heated heat-resistant steel rotary cylinder seal, a 11-graphite seal ring, a 12-feeding fixed end, a 13-hopper, a 14-screw feeder, a 15-discharging fixed end, a 16-gate valve, a 17-rotary discharger, a 18-ripple discharging expander, a 19-ripple expander, a 20-flexible seal ring, a 21-external fixed pipe, a 22-internal seal pipe, a 23-distance adjusting screw, a 24-fixed wheel, a 25-steel wire rope, a 26-guide wheel, a 27-heavy hammer, a 28-guide wheel fixing frame, a 29-discharging fixed end side bracket, 30-rollers and 31-rails.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
referring to fig. 1-2, a carbon composite rotary heating process includes: the carbon material is firstly sent into a low-temperature section to be heated through a screw feeder, the low-temperature section adopts a heat-resistant steel cylinder external heating mode to heat the carbon material from room temperature to 500-1000 ℃, then the carbon material enters a high-temperature heating section, and the high-temperature heating section adopts a graphite tube self-heating type direct heating mode to heat the material to more than 2000 ℃;
the rotary device is in a downward inclination angle from the charging end to the discharging end, the inclination angle is between 1 and 5 degrees, the rotary device is driven by adopting variable frequency speed regulation, and the speed of conveying materials of the rotary kiln is regulated by regulating the rotating speed.
The heat-resistant steel cylinder 9 of the low temperature section is heated by external indirect heating, such as by resistance wire, or resistance belt, or by gas.
The two ends of the high-temperature section graphite tube 7 adopt the power receiving electrode rod 1, the power supplying electric brush 2 and the electric slip ring 3 to convey electricity into the graphite tube 7, the graphite tube 7 generates heat under the action of current, and the graphite can bear the high temperature of more than 3000 ℃ under the condition of isolating air, so that the graphite rotary cylinder can bear the high temperature of more than 2000 ℃.
The device comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod 1 and an externally heating heat-resistant steel rotary cylinder, wherein the self-heating graphite tube rotary cylinder is connected with the externally heating heat-resistant steel rotary cylinder in series, the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube 7, two ends of the graphite tube 7 are connected with an electric slip ring 3 and are electrified and heated through the power receiving electrode rod 1, the inner cylinder of the externally heating heat-resistant steel rotary cylinder is a heat-resistant steel cylinder 9, and the heat-resistant steel cylinder 9 is connected with the graphite cylinder 7 through an electric insulation short tube 8. The power receiving electrode bar 1 is provided with a water cooling device.
Still include material loading stiff end 12, ejection of compact stiff end 15, self-adaptation multilayer sealing device, sealed aligning device, ejection of compact stiff end 15 is connected to the ejection of compact end of self-heating graphite tube rotary drum, the material loading stiff end 12 is connected to the feed end of externally heating heat-resistant steel rotary drum, is provided with self-adaptation multilayer sealing device in the junction of self-heating graphite tube rotary drum and ejection of compact stiff end 15, is provided with self-adaptation multilayer sealing device in the junction of feed end and material loading stiff end 12 of externally heating heat-resistant steel rotary drum, self-adaptation multilayer sealing device adjusts the concentricity with self-heating graphite tube rotary drum or externally heating heat-resistant steel rotary drum through sealed aligning device.
The discharging fixed end 15 comprises a steel structure shell, a fire-resistant heat-insulating material layer, a gate valve 16, a rotary discharger 17 and a corrugated discharge expander 18, wherein the steel structure shell is wrapped outside the fire-resistant heat-insulating material layer, a discharging cavity is formed in the fire-resistant heat-insulating material layer, the discharging end of the self-heating graphite tube rotary cylinder is inserted into the discharging cavity, and the gate valve 16, the rotary discharger 17 and the corrugated discharge expander 18 are sequentially arranged at the bottom of the discharging cavity. The discharge fixed end 15 is also provided with an explosion-proof valve 4 and an observation temperature measuring hole.
The feeding fixed end 12 comprises a steel structure shell, a fire-resistant heat-insulating material layer, a screw feeder 14, a blanking pipe and a gate valve, wherein the steel structure shell is wrapped outside the fire-resistant heat-insulating material layer, a feeding cavity is formed in the fire-resistant heat-insulating material layer, the feeding end of the external heating heat-resistant steel rotary drum is inserted into the feeding cavity, the screw feeder 14 is connected with the feeding end of the external heating heat-resistant steel rotary drum, the blanking pipe is arranged at the bottom of the feeding cavity, and the gate valve is arranged on the blanking pipe. The feeding fixed end 12 is also provided with an air outlet. The screw feeder 14 extends into the feeding cavity from the side face of the feeding fixed end 12 and is connected with the heat-resistant steel cylinder 9, and a ripple compensator is arranged between the part of the screw feeder 14 outside the feeding fixed end 12 and used for feeding sealing. The feed opening of the screw feeder 14 is connected to the hopper 13.
The self-adaptive multi-layer sealing device comprises a flexible sealing ring 20, a graphite sealing ring 11, an outer fixing tube 21 and an inner sealing tube 22, wherein the inner sealing tube 22 is connected with a self-heating graphite tube rotary drum or an external heating heat-resistant steel rotary drum through a sealing aligning device, a multi-layer flexible sealing ring 20 is axially arranged between the inner sealing tube 22 and the outer fixing tube 21, the graphite sealing ring 11 is arranged at the innermost side of the multi-layer flexible sealing ring 20, and the outer fixing tube 21 is connected with a discharging fixing end 15 or a feeding fixing end 12 through bolts.
Referring to fig. 2, rollers 30 and rails 31 are mounted at the bottoms of the feeding fixed end 12 and the discharging fixed end 15, and the feeding fixed end 12 and the discharging fixed end 15 are respectively connected with a heavy hammer 27 through a steel wire rope 25. Fixed wheel 24 is fixed on the steel structure shell of material loading stiff end 12 and ejection of compact stiff end 15, and the one end fixed connection fixed wheel 24 of wire rope 25, the other end is walked around leading wheel 26 and is connected weight 27.
The outer side of the flexible sealing ring 20 is connected with an outer fixed pipe 21, and contact sealing is formed between the flexible sealing ring 20 and an inner sealing pipe 22. The outside of graphite sealing washer 11 is connected outer fixed pipe 21, and the inside is connected inner seal pipe 22, and the centre is the axial contact sealed face, because long-time work wearing and tearing can produce the clearance in the axial contact sealed face department of graphite sealing washer 11, can make material loading stiff end 12 or ejection of compact stiff end 15 drive outer fixed pipe 21 and produce the displacement through weight 27, carries out automatic fine motion compensation to the clearance of graphite sealing washer 11 axial contact sealed face.
When the friction sealing surface of the graphite sealing ring 11 is worn to generate a gap, the self-adaptive multi-layer sealing device can enable the feeding fixed end 12 and the discharging fixed end 15 to automatically and slightly compensate the worn gap by running on the track 31 through the roller 30 under the action of the heavy hammer 27. By adjusting the weight of the weight 27 and applying a constant pressure to the friction sealing surface, the sealing surface is kept to be always zero clearance, so that the requirement of automatic self-adaptive sealing is met.
The sealing aligning device comprises a distance adjusting screw rod 23 and a corrugated expander 19, wherein the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder is connected with the self-adaptive multi-layer sealing device through the distance adjusting screw rod 23, and the corrugated expander 19 for sealing is further arranged between the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder and the self-adaptive multi-layer sealing device.
The middle of the distance-adjusting screw rod 23 is provided with a nut, the two ends of the distance-adjusting screw rod are provided with screw rods with positive and negative threads, and the length of the distance-adjusting screw rod 23 is adjusted by screwing the screw nuts, so that the radial distance between the self-adaptive multi-layer sealing device and the self-heating graphite tube rotary drum or the external heating heat-resistant steel rotary drum is adjusted, the concentricity of the sealing surface cylinder body and the rotary kiln is achieved in the circumferential direction through the adjustment of the screw rods, and the corrugated expander 19 plays a sealing role inside and outside the kiln and can provide position compensation during debugging.
The self-heating graphite tube rotary drum or the externally heating heat-resistant steel rotary drum is installed in place and then is subjected to manual sealing surface alignment, namely concentricity of the multi-layer sealing device and the rotary drum is adjusted, a plurality of distance adjusting screws 23 play a role in adjusting concentricity and supporting the multi-layer sealing device, the purpose of aligning during construction adjustment is achieved, and after adjustment, the external fixing tube 21 is fixedly connected with a feeding fixed end or a discharging fixed end of the rotary kiln through bolts.
The self-heating graphite tube rotary cylinder comprises a graphite tube 7, a fireproof insulating heat-insulating material layer wrapped on the outer side of the graphite tube and a steel shell fixed on the outer portion of the fireproof insulating heat-insulating material layer.
The carbon composite rotary heating process and the device are suitable for heating treatment of carbon (graphite) materials, have no pollution and oxidation, and can realize high-temperature heating.
Claims (9)
1. The carbon composite rotary heating process is characterized by comprising the following steps of: the carbon material is firstly sent into a low-temperature section to be heated through a screw feeder, the low-temperature section adopts a heat-resistant steel cylinder external heating mode to heat the carbon material from room temperature to 500-1000 ℃, then the carbon material enters a high-temperature heating section, and the high-temperature heating section adopts a graphite tube self-heating type direct heating mode to heat the material to more than 2000 ℃;
the rotary device is in a downward inclination angle from the charging end to the discharging end, the inclination angle is between 1 and 5 degrees, the rotary device is driven by adopting variable frequency speed regulation, and the speed of conveying materials of the rotary kiln is regulated by regulating the rotating speed;
the device adopted by the carbon composite rotary heating process comprises a self-heating graphite tube rotary cylinder, a power-receiving electrode rod and an external heating heat-resistant steel rotary cylinder, wherein the self-heating graphite tube rotary cylinder is connected with the external heating heat-resistant steel rotary cylinder in series, the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power-receiving electrode rod, the inner cylinder of the external heating heat-resistant steel rotary cylinder is a heat-resistant steel cylinder, and the heat-resistant steel cylinder is connected with the graphite cylinder through an electric insulation short tube.
2. The process for carbon composite rotary heating according to claim 1, wherein the process is suitable for cladding and carbonizing a carbon material.
3. The carbon composite rotary heating process according to claim 1, further comprising a feeding fixed end, a discharging fixed end, a self-adaptive multi-layer sealing device and a sealing aligning device, wherein the discharging end of the self-heating graphite tube rotary cylinder is connected with the discharging fixed end, the feeding end of the externally heating heat-resistant steel rotary cylinder is connected with the feeding fixed end, the self-adaptive multi-layer sealing device is arranged at the joint of the self-heating graphite tube rotary cylinder and the discharging fixed end, and the self-adaptive multi-layer sealing device is arranged at the joint of the feeding end of the externally heating heat-resistant steel rotary cylinder and the feeding fixed end, and the concentricity of the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder is adjusted through the sealing aligning device.
4. The carbon composite rotary heating process according to claim 3, wherein the discharge fixed end comprises a steel structure shell, a refractory heat-insulating material layer, a gate valve, a rotary discharger and a corrugated discharge expander, the steel structure shell is wrapped outside the refractory heat-insulating material layer, a discharge cavity is formed in the refractory heat-insulating material layer, the discharge end of the self-heating graphite tube rotary drum is inserted into the discharge cavity, and the gate valve, the rotary discharger and the corrugated discharge expander are sequentially arranged at the bottom of the discharge cavity.
5. The carbon composite rotary heating process according to claim 3, wherein the feeding fixed end comprises a steel structure shell, a refractory heat-insulating material layer, a screw feeder, a discharging pipe and a gate valve, the steel structure shell is wrapped outside the refractory heat-insulating material layer, a feeding cavity is formed in the refractory heat-insulating material layer, the feeding end of the external heating heat-resistant steel rotary cylinder is inserted into the feeding cavity, the screw feeder is connected with the feeding end of the external heating heat-resistant steel rotary cylinder, the discharging pipe is arranged at the bottom of the feeding cavity, and the gate valve is arranged on the discharging pipe.
6. The carbon composite rotary heating process according to claim 3, wherein the self-adaptive multi-layer sealing device comprises a flexible sealing ring, a graphite sealing ring, an outer fixing tube and an inner sealing tube, the inner sealing tube is connected with a self-heating graphite tube rotary drum or an external heating heat-resistant steel rotary drum through a sealing aligning device, a multi-layer flexible sealing ring is axially arranged between the inner sealing tube and the outer fixing tube, the graphite sealing ring is arranged at the innermost side of the multi-layer flexible sealing ring, and the outer fixing tube is connected with a discharge fixing end or a feeding fixing end.
7. The carbon composite rotary heating process according to claim 6, wherein rollers and rails are installed at bottoms of the feeding fixed end and the discharging fixed end, and the feeding fixed end and the discharging fixed end are respectively connected with a heavy hammer through a steel wire rope.
8. The carbon composite rotary heating process according to claim 3, wherein the sealing aligning device comprises a distance adjusting screw rod and a corrugated expander, the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder is connected with the self-adaptive multi-layer sealing device through the distance adjusting screw rod, and the corrugated expander for sealing is further arranged between the self-heating graphite tube rotary cylinder or the externally heating heat-resistant steel rotary cylinder and the self-adaptive multi-layer sealing device.
9. The carbon composite rotary heating process according to claim 1, wherein the self-heating graphite tube rotary cylinder comprises a graphite tube, a refractory insulating material layer wrapping the outer side of the graphite tube, and a steel shell fixed on the outer side of the refractory insulating material layer.
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| CN202210437389.0A CN114684806B (en) | 2022-04-22 | 2022-04-22 | Carbon composite rotary heating process and device |
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| CN202210437389.0A CN114684806B (en) | 2022-04-22 | 2022-04-22 | Carbon composite rotary heating process and device |
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| CN114684806B true CN114684806B (en) | 2024-03-26 |
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| DE3822475A1 (en) * | 1988-07-02 | 1990-01-04 | Harro J Dipl Ing Taubmann | Heating system for high-temperature rotary tubular kilns |
| CN2289184Y (en) * | 1996-09-24 | 1998-08-26 | 夏重力 | Ferrite presintering charge rotary-drum furnace |
| CN104534864A (en) * | 2014-12-01 | 2015-04-22 | 咸阳华光窑炉设备有限公司 | Electrically-heating continuous internal-heating high temperature rotary kiln |
| CN205784525U (en) * | 2016-07-08 | 2016-12-07 | 中国重型机械研究院股份公司 | A kind of pulverized coal pyrolysis kiln MULTILAYER COMPOSITE sealing device |
| CN206680187U (en) * | 2017-03-30 | 2017-11-28 | 顾齐航 | Efficient sealed continuous graphitizing furnace |
| CN113213449A (en) * | 2021-04-22 | 2021-08-06 | 湖南阿斯米科技有限公司 | Continuous reaction treatment method for graphite cathode material/phosphate and ternary anode material of lithium ion battery |
| CN113479873A (en) * | 2021-07-01 | 2021-10-08 | 海城申合科技有限公司 | Continuous graphitization and high-temperature carbonization integrated furnace and working method thereof |
| CN114060822A (en) * | 2021-11-29 | 2022-02-18 | 南京中船绿洲环保有限公司 | Rotary anaerobic pyrolysis device for small sealing surface |
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