CN109081336B - Electric calcining high-temperature graphitization furnace - Google Patents
Electric calcining high-temperature graphitization furnace Download PDFInfo
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- CN109081336B CN109081336B CN201811241455.7A CN201811241455A CN109081336B CN 109081336 B CN109081336 B CN 109081336B CN 201811241455 A CN201811241455 A CN 201811241455A CN 109081336 B CN109081336 B CN 109081336B
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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
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- 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
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Abstract
The invention relates to a graphitization furnace, in particular to an electric calcining high-temperature graphitization furnace for high-temperature resistance heating calcining graphitization production in carbon production. The furnace comprises a lower electrode, an inner water cooling sleeve and a material distributing ring, wherein the lower electrode is built by annular graphite, the inner water cooling sleeve is annular hollow, the material distributing ring is circular heat-resistant cast iron, the lower electrode is arranged in the middle of a lining wall body embedded in a furnace body, the inner water cooling sleeve is arranged under the center of the furnace body, the material distributing ring is arranged at the top of the inner water cooling sleeve, an outer water cooling sleeve is arranged under the furnace body, and the upper electrode is arranged at the center of the top of the furnace body. The invention has simple structure construction, lower implementation cost, stable service performance, long service life, high utilization rate of electric heat energy and low operation and maintenance cost, and basically eliminates the coking phenomenon of the inner wall, and ensures the product quality and the productivity.
Description
Technical Field
The invention relates to a graphitization furnace, in particular to an electric calcining high-temperature graphitization furnace for high-temperature resistance heating calcining graphitization production in carbon production.
Background
At present, the high-temperature electric calcining graphitization production in carbon production requires that the coke after low-temperature calcination is calcined to the high temperature of more than 2300 ℃ and graphitized. In the prior art, the structural form of a low-temperature electric calcining furnace is generally adopted, and only the innermost lining is changed into a carbonaceous material, and the thickness of the lining is increased correspondingly. The consequences of this are: 1. under the action of high temperature of nearly 3000 ℃ in the furnace, the carbonaceous material lining bears huge temperature pressure, and the adjacent outer lining still needs to consider adopting a high-temperature-resistant heat-insulating material, so that the construction cost is increased; 2. the carbonaceous material lining is graphitized at high temperature, so that the conductivity is greatly improved, and the phenomenon of short circuit of current in the furnace through the lining is caused, thereby bringing disorder of the thermal regulation in the furnace; 3. for the raw materials with high ash content such as calcined anthracite, ash melting and coking are easy to occur in the furnace and are adhered to the furnace wall, so that the drift diameter of the furnace is smaller and smaller, the productivity is influenced, and accidents such as furnace spraying and even explosion occur. Obviously, the existing production device of the electric calcining graphitization furnace is not ideal enough.
Disclosure of Invention
The invention provides an electric calcining high-temperature graphitization furnace structure for solving the technical problems, and aims to enable the structure to be simple to manufacture, lower in implementation cost, stable in service performance, long in service life, guaranteed in product quality and capacity, high in utilization rate of electric heat energy and low in operation and maintenance cost, and the inner wall coking phenomenon is basically eliminated.
The invention relates to an electric calcining high-temperature graphitization furnace, which comprises a lower electrode 2, an inner water cooling sleeve 5 and a material distribution ring 6, wherein the lower electrode 2 is built by annular graphite, the inner water cooling sleeve 5 is annular hollow, the material distribution ring 6 is circular ring-shaped heat-resistant cast iron, the lower electrode is arranged in the middle of a lining wall body embedded in a furnace body 3, the inner water cooling sleeve 5 is arranged under the center of the furnace body 3, the material distribution ring 6 is arranged at the top of the inner water cooling sleeve 5, an outer water cooling sleeve 4 is arranged under the furnace body 3, and an upper electrode 1 is arranged at the center of the top of the furnace body 3.
The height of the material distributing ring 6 is 200-500 mm.
The diameter ratio of the inner water cooling jacket 5 to the outer water cooling jacket 4 is 0.25-0.5.
The distance between the upper electrode 1 and the lower electrode 2 is 2000-4000 mm.
The upper electrode 1 is a graphite electrode with the diameter phi of 400-phi 700mm, adopts a hanging mode, and the upper end of the upper electrode is movably connected with the positive bus.
The lower electrode 2 is uniformly led out of the furnace to the periphery, then is converged and is connected with the negative bus.
The furnace body 3 is cylindrical, the temperature of the inner wall is designed according to 1300-1400 ℃, the upper and lower combination parts of the furnace body 3 and the lower electrode 4 are built by carbon bricks, and the lining thickness of the furnace body 3 is 300-800 mm.
The outer water cooling jacket 4 is of an annular hollow structure, and the outer water cooling jacket 4 is connected with the furnace body 3 through a flange; the distance between the upper surface of the outer water cooling jacket 4 and the lower end of the lower electrode 2 is more than 3 meters, and the inner diameter and the outer diameter of the outer water cooling jacket 4 are phi 3400mm and phi 4000mm respectively; the inner water cooling jacket 5 is of an annular hollow structure and is concentrically arranged with the outer water cooling jacket 4, the vertical cooling height is the same as that of the outer water cooling jacket 4, and the inner diameter and the outer diameter of the inner water cooling jacket 5 are respectively phi 1000mm and phi 1600 mm.
The upper wall thickness of the furnace body 3 is 300mm, and the upper wall thickness of the furnace body 3 is 600 mm. The material distributing ring 6 is made of graphite or heat-resistant cast iron, is in a circular shape, has a regular triangular cross section, has a height of 200-500mm, and has a diameter matched with the inner water cooling jacket 5.
The invention has the advantages and effects that: compared with the prior art, the invention has the advantages of simple structure construction, lower implementation cost, basically eliminated inner wall coking phenomenon, stable service performance, long service life, ensured product quality and capacity, high utilization rate of electric heat energy and low operation and maintenance cost.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an upper electrode; 2. a lower electrode; 3. a furnace body; 4. an external water-cooling jacket; 5. an inner water-cooling jacket; 6. a material distribution ring; 7. isotherms.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in the figure, an electrically calcined high-temperature graphitization furnace comprises a lower electrode 2, an inner water cooling sleeve 5 and a material distribution ring 6, wherein the lower electrode 2 is built by annular graphite, the inner water cooling sleeve 5 is annular hollow, the material distribution ring 6 is circular heat-resistant cast iron, the lower electrode is arranged in the middle of a lining wall body embedded in a furnace body 3, the inner water cooling sleeve 5 is arranged under the center of the furnace body 3, the material distribution ring 6 is arranged at the top of the inner water cooling sleeve 5, an outer water cooling sleeve 4 is arranged below the furnace body 3, and an upper electrode 1 is arranged at the center of the top of the furnace body 3.
The height of the material distributing ring 6 is 200-500 mm.
The diameter ratio of the inner water cooling jacket 5 to the outer water cooling jacket 4 is 0.25-0.5.
The distance between the upper electrode 1 and the lower electrode 2 is 2000-4000 mm.
The upper electrode 1 is a graphite electrode with the diameter phi of 400-phi 700mm, adopts a hanging mode, and the upper end of the upper electrode is movably connected with the positive bus.
The lower electrode 2 is uniformly led out of the furnace to the periphery, then is converged and is connected with the negative bus.
The furnace body 3 is cylindrical, the temperature of the inner wall is designed according to 1300-1400 ℃, the upper and lower combination parts of the furnace body 3 and the lower electrode 4 are built by carbon bricks, and the lining thickness of the furnace body 3 is 300-800 mm.
The outer water cooling jacket 4 is of an annular hollow structure, and the outer water cooling jacket 4 is connected with the furnace body 3 through a flange; the distance between the upper surface of the outer water cooling jacket 4 and the lower end of the lower electrode 2 is more than 3 meters.
The inner water cooling jacket 5 is of an annular hollow structure and is concentrically arranged with the outer water cooling jacket 4, and the vertical cooling height is the same as that of the outer water cooling jacket 4.
The material distributing ring 6 is made of graphite or heat-resistant cast iron, is in a circular shape, has a regular triangular cross section, has a height of 200-500mm, and has a diameter matched with the inner water cooling jacket 5. The key function of the material distribution ring 6 is to divide the calcined material into a central high-temperature graphitized material and a peripheral common calcined material. The high-temperature material is subjected to high temperature of more than 2300 ℃ and largely graphitized, and is a main product of the invention; the calcined material is typically subjected to temperatures above about 1100 c and is a by-product of the present invention.
When the furnace is charged, the clinker is filled to a position 1000mm below the lower end surface of the upper electrode, and then the raw material is filled.
During normal operation, the temperature distribution between the two electrodes is shown as an isothermal line 7, the calcined material is continuously discharged downwards and is divided into a high-temperature graphitized material (center) and a normal calcined material (periphery) through a material distribution ring 6, and the two calcined materials are synchronously discharged by adopting two discharging systems so as to ensure that the furnace burden is uniformly reduced.
Claims (10)
1. The utility model provides an electric calcining high-temperature graphitization furnace, includes lower part electrode (2), interior water-cooling cover (5) and divides material ring (6), its characterized in that: the lower electrode (2) is built by annular graphite, the inner water cooling jacket (5) is annular hollow, the material distribution ring (6) is annular, and the section of the material distribution ring is in a regular triangle shape; the lower electrode is arranged in the middle of a lining wall body embedded in the furnace body (3), the inner water cooling sleeve (5) is arranged under the center of the furnace body (3), the material distribution ring (6) is arranged at the top of the inner water cooling sleeve (5), the outer water cooling sleeve (4) is arranged under the furnace body (3), and the upper electrode (1) is arranged at the center of the top of the furnace body (3).
2. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the height of the material distribution ring (6) is 200-500 mm.
3. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the diameter ratio of the inner water cooling jacket (5) to the outer water cooling jacket (4) is 0.25-0.5.
4. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the distance between the upper electrode (1) and the lower electrode (2) is 2000-4000 mm.
5. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the upper electrode (1) is a graphite electrode with the diameter phi of 400-phi 700mm, adopts a hanging mode, and the upper end of the upper electrode is movably connected with the positive bus.
6. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the lower electrode (2) is uniformly led out of the furnace to the periphery, then is converged and is connected with the negative bus.
7. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the furnace body (3) is cylindrical, the temperature of the inner wall is designed according to 1300-1400 ℃, the upper and lower combination parts of the furnace body and the lower electrode (2) are built by carbon bricks, and the lining thickness of the furnace body (3) is 300-800 mm.
8. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the outer water cooling jacket (4) is of an annular hollow structure, and the outer water cooling jacket (4) is connected with the furnace body (3) through a flange; the distance between the upper surface of the outer water cooling jacket (4) and the lower end of the lower electrode (2) is more than 3 meters, and the inner diameter and the outer diameter of the outer water cooling jacket (4) are phi 3400mm and phi 4000mm respectively; the inner water cooling jacket (5) and the outer water cooling jacket (4) are concentrically arranged, the vertical cooling height is the same as that of the outer water cooling jacket (4), and the inner diameter and the outer diameter of the inner water cooling jacket (5) are respectively phi 1000mm and phi 1600 mm.
9. An electrically calcined high temperature graphitization furnace as claimed in claim 7, wherein: the upper wall thickness of the furnace body (3) is 300 mm.
10. An electrically calcined high temperature graphitization furnace as claimed in claim 1, wherein: the material distribution ring (6) is made of graphite or heat-resistant cast iron, and the diameter of the material distribution ring is matched with that of the inner water cooling jacket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811241455.7A CN109081336B (en) | 2018-10-24 | 2018-10-24 | Electric calcining high-temperature graphitization furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811241455.7A CN109081336B (en) | 2018-10-24 | 2018-10-24 | Electric calcining high-temperature graphitization furnace |
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| Publication Number | Publication Date |
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| CN109081336A CN109081336A (en) | 2018-12-25 |
| CN109081336B true CN109081336B (en) | 2020-06-30 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159207B (en) * | 2011-12-14 | 2015-04-08 | 贵阳铝镁设计研究院有限公司 | An electric calcining furnace for a graphite carbon material |
| CN103896255B (en) * | 2012-12-26 | 2016-02-10 | 贵阳铝镁设计研究院有限公司 | Vertical continuous graphitizing furnace |
| JP6621603B2 (en) * | 2015-06-15 | 2019-12-18 | 日本電極株式会社 | Carbonaceous particle heat treatment apparatus and method |
| CN205045829U (en) * | 2015-10-20 | 2016-02-24 | 辽宁万鑫科技材料有限公司 | Cooling system of continuous graphitization electricity forge furnace |
| CN205933249U (en) * | 2016-07-26 | 2017-02-08 | 株洲晨昕中高频设备有限公司 | Distributing type powder heating furnace |
| CN108101048A (en) * | 2018-02-09 | 2018-06-01 | 李娟� | High temperature graphitization equipment |
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