CN111847442A - High-temperature furnace capable of continuously producing artificial graphite - Google Patents
High-temperature furnace capable of continuously producing artificial graphite Download PDFInfo
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- CN111847442A CN111847442A CN202010856832.9A CN202010856832A CN111847442A CN 111847442 A CN111847442 A CN 111847442A CN 202010856832 A CN202010856832 A CN 202010856832A CN 111847442 A CN111847442 A CN 111847442A
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- temperature
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- continuously producing
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- 229910021383 artificial graphite Inorganic materials 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 25
- 239000010439 graphite Substances 0.000 claims abstract description 25
- 238000009826 distribution Methods 0.000 claims abstract description 16
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 24
- 239000010431 corundum Substances 0.000 claims description 24
- 239000011819 refractory material Substances 0.000 claims description 22
- 239000000779 smoke Substances 0.000 claims description 13
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052863 mullite Inorganic materials 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003575 carbonaceous material Substances 0.000 claims description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005087 graphitization Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- C01B32/20—Graphite
- C01B32/205—Preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses a high-temperature furnace capable of continuously producing artificial graphite, which comprises a furnace lining, wherein a water cooling sleeve, a low-temperature light heat-insulating layer, a medium-temperature layer and a high-temperature layer are sequentially arranged on a working layer of the furnace lining from outside to inside; the device uses the characteristics of a high-temperature fluidized bed for reference, changes the production mode of the traditional graphitization furnace kiln, adopts a masonry or pouring process with a multilayer structure, adopts a water cooling sleeve on the outer layer to improve the operation of the working environment, and can introduce inert gas into the first distribution valve and the second distribution valve which are arranged at the bottom of the negative pole of the graphite electrode, thereby reducing the temperature of discharged materials and simultaneously increasing the temperature of the inert gas entering the furnace, ensuring that the energy consumption can not be greatly increased, and the discharged materials are cooled again by the heat energy recovery device to obtain the requirement of proper temperature.
Description
Technical Field
The invention relates to a high-temperature furnace, in particular to a high-temperature furnace capable of continuously producing artificial graphite.
Background
The existing graphitizing furnace basically adopts a structure that the material is fed from the upper part and discharged from the bottom, and the high-temperature area in the middle part is calcined and graphitized. The furnace top is provided with a graphite electrode anode, and the furnace cathode is arranged in the bottom area of the furnace side.
The furnace has the advantages of low construction difficulty and relatively poor heat preservation effect of a furnace lining, the graphite electrode of the furnace core is often aggravated in electrode loss due to side oxidation and electric spark generation, the temperature uniformity of the furnace core is not ideal, and therefore the quality fluctuation of the produced products is often large.
The graphite electrode cathode also causes furnace shutdown maintenance frequency to not meet the expected requirement due to oxidation loss, thereby influencing the production rhythm and causing yield to slide down.
Disclosure of Invention
The invention provides a high-temperature furnace capable of continuously producing artificial graphite, which is used for overcoming the defect of large product quality fluctuation caused by non-ideal temperature uniformity of a furnace core of a graphitization furnace in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses a high-temperature furnace capable of continuously producing artificial graphite, which comprises a furnace lining, wherein a water cooling sleeve, a low-temperature light heat-insulating layer, a medium-temperature layer and a high-temperature layer are sequentially arranged on a working layer of the furnace lining from outside to inside; and a graphite electrode cathode is arranged on the inner wall of the high-temperature layer.
Furthermore, the low-temperature light heat-insulating layer is insulated by adopting heat-insulating cotton.
Furthermore, the bottom of the furnace lining is connected with a conveying device for conveying finished product materials.
Furthermore, the furnace lining adopts a multi-layer structure design, and the low-temperature light heat-insulating layer adopts an aluminum silicate cotton/blanket material; the middle temperature layer is made of semi-light mullite and heavy mullite refractory materials; the high-temperature layer and the medium-temperature layer are connected by a carbon material in a corundum/high-corundum refractory material and carbon ramming material/cold ramming paste composite mode.
Furthermore, the furnace cover adopts a multi-layer structure design, and the first layer is made of refractory materials such as corundum, zirconia corundum and chrome corundum; the second layer is made of refractory materials of chrome corundum/corundum and mullite; the third layer is made of a refractory material of corundum hollow spheres; the fourth layer is made of semi-light mullite refractory material, and an electrode hole, a smoke exhaust hole, a temperature measuring hole and a blanking hole are reserved.
Further, a furnace top flue is also arranged on the smoke exhaust port, the furnace top flue is made of an acid-resistant and alkali-resistant aluminum-silicon refractory material, and a flue gas inlet and outlet channel, an observation hole and a dust deposition cleaning port are reserved.
The invention has the following beneficial effects: the device uses the characteristics of a high-temperature fluidized bed for reference, changes the production mode of the traditional graphitization furnace kiln, adopts a masonry or pouring process with a multilayer structure, adopts a water cooling sleeve on the outer layer to improve the operation of the working environment, and can introduce inert gas into the first distribution valve and the second distribution valve which are arranged at the bottom of the negative pole of the graphite electrode, thereby reducing the temperature of discharged materials and simultaneously increasing the temperature of the inert gas entering the furnace, ensuring that the energy consumption can not be greatly increased, and the discharged materials are cooled again by the heat energy recovery device to obtain the requirement of proper temperature.
The multilayer structure sets up the sealing performance that makes the furnace body better, and the interior inert gas of stove has protected graphite electrode positive pole and graphite electrode negative pole and has been difficult for by the oxidation, and the structure similar to the fluidized bed has played the effect of evenly distributed stove internal temperature, and slight rising and descending motion appear in the regional material of high temperature, have improved the graphitization degree of material. The whole furnace wall is a power supply cathode, so that the service life is greatly prolonged. The water cooling jacket can be used for thermal power generation or other purposes, and energy consumption is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a graphite electrode positive electrode; 2. a smoke outlet; 3. a furnace top blanking hole; 4. a furnace cover; 5. a graphite electrode negative electrode; 6. a high temperature layer; 7. a middle temperature layer; 8. a low-temperature light insulating layer; 9. heat preservation cotton; 10. water cooling jacket; 11. a first dispensing valve; 12. a second dispensing valve; 13. a transportation device; 14. a heat energy recovery device; 15. a high temperature zone; 16. a transition zone; 17. a mixing zone.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1, a high temperature furnace capable of continuously producing artificial graphite comprises a furnace lining, wherein a working layer of the furnace lining is sequentially provided with a water cooling jacket 10, a low temperature light insulating layer 8, an intermediate temperature layer 7 and a high temperature layer 6 from outside to inside, and the upper part of the furnace lining is provided with a furnace cover 4 matched with the furnace lining;
the furnace cover 4 is respectively provided with a smoke outlet 2, a graphite electrode anode 1 and a furnace top blanking hole 3;
the inner wall of the high-temperature layer 6 is provided with a graphite electrode cathode 5;
a first distribution valve 11 and a second distribution valve 12 are arranged at the bottom of the graphite electrode cathode 5, and inert gas can be introduced;
the bottom of the graphite electrode cathode 5 is also provided with a heat energy recovery device 14 which is positioned between the first distribution valve 11 and the second distribution valve 12;
graphite electrode negative pole 5's inner chamber from top to bottom is set gradually as: a high temperature zone 15, a transition zone 16 for the graphitized material, and a mixing zone 17 for the inert gas and the material.
The bottom of the furnace lining is connected with a conveying device 13 for conveying finished product materials.
And the low-temperature light heat-insulating layer 8 is insulated by adopting heat-insulating cotton 9.
The furnace lining adopts a multi-layer structure design, and the low-temperature light heat-insulating layer 8 adopts an aluminum silicate cotton/blanket material; the middle temperature layer 7 is made of semi-light mullite and heavy mullite refractory materials; the high-temperature layer 6 and the medium-temperature layer 7 are connected by carbon materials through a corundum/high-corundum refractory material and a carbon ramming material/cold ramming paste composite mode.
The furnace cover 4 is designed by adopting a multi-layer structure, and the first layer is made of corundum, zirconia corundum and chrome corundum refractory materials; the second layer is made of chrome corundum/corundum, mullite and hollow sphere refractory materials; the third layer is made of corundum hollow sphere refractory material; the fourth layer is made of semi-light mullite refractory material, and an electrode hole, a smoke exhaust hole, a temperature measuring hole, a blanking hole and the like are reserved.
The smoke outlet 2 is also provided with a furnace top flue, the furnace top flue is made of an acid-resistant and alkali-resistant aluminum-silicon refractory material, and a smoke inlet and outlet channel, an observation hole, a dust deposition cleaning port and the like are reserved.
The working process is as follows: the raw materials enter the furnace body through the blanking system, the positive electrode 1 of the graphite electrode enters the furnace through the furnace cover 4, and the current is transmitted to the negative electrode 5 of the graphite electrode through the raw materials to form a circuit cycle. The current passes through the raw materials (petroleum coke, calcined coal or other carbonaceous materials) and generates a large amount of heat, the temperature of the raw materials is raised, and after reaching a certain temperature (such as 2100 ℃), sulfur dioxide in the materials passes through the smoke outlet 2 of the furnace cover 4 to the flue and then enters the smoke discharge pipeline. After the material is calcined and graphitized, the material descends through a discharge opening, meanwhile, the inert gas passes through the first distribution valve 11 and the second distribution valve 12 and enters the material 15 in the high temperature region, the material is heated and enters the high temperature layer 6, a material movement mode or trajectory similar to that of a fluidized bed is generated in the material movement process, and thus the material is driven by the gas to move up and down, and the purposes of uniform heating and uniform graphitization of the material are achieved. And the bottom discharge hole is cooled by inert gas and then continuously reaches the water cooling jacket 10 at the bottom, and the temperature is continuously reduced to obtain the required finished product.
The device uses the characteristics of a high-temperature fluidized bed for reference, changes the production mode of the traditional graphitization furnace kiln, adopts a masonry or pouring process with a multilayer structure, adopts a water cooling sleeve 10 on the outer layer to improve the environmental operation, and can introduce inert gas into the first distribution valve 11 and the second distribution valve 12 which are arranged at the bottom of the graphite electrode cathode 5, reduce the temperature of discharged materials and simultaneously increase the temperature of the inert gas entering the furnace, ensure that the energy consumption can not be greatly increased, and the discharged materials are cooled again through the heat energy recovery device 14 to obtain the requirement of proper temperature.
The multilayer structure makes the sealing performance of furnace body better. Inert gas in the furnace protects the graphite electrode anode 1 and the graphite electrode cathode 5 from being oxidized easily, the structure similar to a fluidized bed has the effect of uniformly distributing the temperature in the furnace, the materials 15 in a high-temperature area slightly rise and fall, and the graphitization degree of the materials is improved. The whole furnace wall is a power supply cathode, so that the service life is greatly prolonged. The water cooling jacket 10 can be used for thermal power generation or other purposes, and energy consumption is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A high-temperature furnace capable of continuously producing artificial graphite is characterized by comprising a furnace lining, wherein a water cooling sleeve, a low-temperature light heat-insulating layer, a medium-temperature layer and a high-temperature layer are sequentially arranged on a working layer of the furnace lining from outside to inside, and a furnace cover matched with the furnace lining is arranged at the upper part of the furnace lining;
the furnace cover is respectively provided with a smoke outlet, a graphite electrode anode and a furnace top blanking hole;
the inner wall of the high-temperature layer is provided with a graphite electrode cathode;
a first distribution valve and a second distribution valve are arranged at the bottom of the graphite electrode cathode and can be filled with inert gas;
the bottom of the graphite electrode negative electrode is also provided with a heat energy recovery device which is positioned between the first distribution valve and the second distribution valve;
the inner chamber of graphite electrode negative pole from top to bottom is set gradually into: a high temperature zone, a transition zone of the graphitized material and a mixing zone of the inert gas and the material.
2. The high-temperature furnace kiln capable of continuously producing the artificial graphite as claimed in claim 1, wherein the low-temperature light-weight heat-insulating layer is heat-insulated by heat-insulating cotton.
3. The high-temperature furnace kiln capable of continuously producing artificial graphite according to claim 1, wherein a conveying device is connected to the bottom of the furnace lining for conveying finished materials.
4. The high-temperature furnace kiln capable of continuously producing the artificial graphite according to claim 1, characterized in that the furnace lining is designed by adopting a multi-layer structure, and the low-temperature light heat-insulating layer is made of aluminum silicate cotton/blanket material; the middle temperature layer is made of semi-light mullite refractory materials and heavy mullite refractory materials; the high-temperature layer and the medium-temperature layer are connected by a carbon material in a corundum/high-corundum refractory material and carbon ramming material/cold ramming paste composite mode.
5. The high-temperature furnace kiln capable of continuously producing the artificial graphite according to claim 1, wherein the furnace cover is designed in a multi-layer structure, and the first layer is made of refractory materials such as corundum, zirconia corundum and chrome corundum; the second layer is made of refractory materials of chrome corundum/corundum and mullite; the third layer is made of a refractory material of corundum hollow spheres; the fourth layer is made of semi-light mullite refractory material, and an electrode hole, a smoke exhaust hole, a temperature measuring hole and a blanking hole are reserved.
6. The high-temperature furnace kiln capable of continuously producing the artificial graphite according to claim 1, wherein a furnace top flue is further arranged on the smoke outlet, the furnace top flue is made of an acid-resistant alkali-resistant aluminum-silicon refractory material, and a smoke inlet and outlet channel, an observation hole and an accumulated dust cleaning port are reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010856832.9A CN111847442A (en) | 2020-08-24 | 2020-08-24 | High-temperature furnace capable of continuously producing artificial graphite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010856832.9A CN111847442A (en) | 2020-08-24 | 2020-08-24 | High-temperature furnace capable of continuously producing artificial graphite |
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| Publication Number | Publication Date |
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| CN111847442A true CN111847442A (en) | 2020-10-30 |
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| CN202010856832.9A Pending CN111847442A (en) | 2020-08-24 | 2020-08-24 | High-temperature furnace capable of continuously producing artificial graphite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264523A (en) * | 2021-06-28 | 2021-08-17 | 江苏润美新材料有限公司 | Hollow continuous high-temperature graphitizing furnace |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894122A (en) * | 1987-06-22 | 1990-01-16 | Instituto Mexicano De Investigaciones Siderurgicas | Continuous process for the desulphurization of carbonaceous residuals from distillation of petroleum using a plurality of fluidized beds |
| JPH11302009A (en) * | 1998-04-22 | 1999-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Graphitization electric furnace |
| CN201497336U (en) * | 2009-07-30 | 2010-06-02 | 株洲红亚电热设备有限公司 | Horizontal type continuous high temperature graphitizing furnace |
| CN105073637A (en) * | 2013-03-29 | 2015-11-18 | 吉坤日矿日石能源株式会社 | Method for producing graphite and particles for graphite production |
| CN110055621A (en) * | 2019-05-15 | 2019-07-26 | 西安富瑞达科技发展有限公司 | A kind of superhigh temperature graphitizing furnace |
| CN110437856A (en) * | 2019-07-30 | 2019-11-12 | 华南理工大学 | A kind of combustible solid wastes by utilizing rapid pyrolysis method and device based on zeolite porous media and more physical chemistry fields |
| CN111043858A (en) * | 2019-12-31 | 2020-04-21 | 江苏润美新材料有限公司 | But continuous production's high temperature graphitization stove |
| CN212374889U (en) * | 2020-08-24 | 2021-01-19 | 江苏润美新材料有限公司 | High-temperature furnace capable of continuously producing artificial graphite |
-
2020
- 2020-08-24 CN CN202010856832.9A patent/CN111847442A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894122A (en) * | 1987-06-22 | 1990-01-16 | Instituto Mexicano De Investigaciones Siderurgicas | Continuous process for the desulphurization of carbonaceous residuals from distillation of petroleum using a plurality of fluidized beds |
| JPH11302009A (en) * | 1998-04-22 | 1999-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Graphitization electric furnace |
| CN201497336U (en) * | 2009-07-30 | 2010-06-02 | 株洲红亚电热设备有限公司 | Horizontal type continuous high temperature graphitizing furnace |
| CN105073637A (en) * | 2013-03-29 | 2015-11-18 | 吉坤日矿日石能源株式会社 | Method for producing graphite and particles for graphite production |
| CN110055621A (en) * | 2019-05-15 | 2019-07-26 | 西安富瑞达科技发展有限公司 | A kind of superhigh temperature graphitizing furnace |
| CN110437856A (en) * | 2019-07-30 | 2019-11-12 | 华南理工大学 | A kind of combustible solid wastes by utilizing rapid pyrolysis method and device based on zeolite porous media and more physical chemistry fields |
| CN111043858A (en) * | 2019-12-31 | 2020-04-21 | 江苏润美新材料有限公司 | But continuous production's high temperature graphitization stove |
| CN212374889U (en) * | 2020-08-24 | 2021-01-19 | 江苏润美新材料有限公司 | High-temperature furnace capable of continuously producing artificial graphite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264523A (en) * | 2021-06-28 | 2021-08-17 | 江苏润美新材料有限公司 | Hollow continuous high-temperature graphitizing furnace |
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