CN106521711B - A kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive - Google Patents
A kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive Download PDFInfo
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- CN106521711B CN106521711B CN201610979298.4A CN201610979298A CN106521711B CN 106521711 B CN106521711 B CN 106521711B CN 201610979298 A CN201610979298 A CN 201610979298A CN 106521711 B CN106521711 B CN 106521711B
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- graphite
- direct current
- furnace
- carbon black
- graphite heater
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 55
- 239000010439 graphite Substances 0.000 claims abstract description 55
- 239000006229 carbon black Substances 0.000 claims abstract description 23
- 239000012774 insulation material Substances 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000462 isostatic pressing Methods 0.000 claims abstract description 5
- 238000005087 graphitization Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
Abstract
The invention discloses a kind of horizontal continuous superhigh temperature graphitizing furnaces of direct current resistive, and warmed operating temperature is at 2400~3000 DEG C, including graphite heater, protection sleeve pipe, copper electrode, thermal insulation material, furnace shell, thermometer hole, hydraulicefficiency elevation structure and supporting rack.Entire furnace body is horizontal type structure, graphite heater is connected through a screw thread by three sections of isometric isostatic pressing formed graphite pipes and is formed, water-cooled copper electrode is installed at the both ends of graphite heater, graphite bush is installed outside graphite heater, it is carbon black-filled between graphite bush and furnace shell to be used as thermal insulation material, it is reserved with thermometer hole on furnace shell, hydraulicefficiency elevation structure and supporting rack are installed below entire furnace body.The present invention is greatly improved heat-insulating property, significantly reduces thermal losses using carbon black as thermal insulation material；Hydraulicefficiency elevation structure is installed below furnace body convenient for filling and replacement heat preservation carbon black；It is easily achieved the replacement of rapid wear section graphite heater, significantly reduces operating cost, realizes industrial applications.
Description
Technical field
The invention belongs to Carbon fibe continuous filament yarn high temperature graphitization processing equipment fields, and in particular to a kind of horizontal direct current
The continuous superhigh temperature graphitizing furnace of resistive, the graphitization of the critical process Carbon fibe in being prepared for high-modulus Carbon fibe continuous filament yarn
Processing.
Background technology
So-called high-modulus Carbon fibe refers to the Carbon fibe handled by 2000~3000 DEG C of high temperature graphitizations, because it has
The speciality such as excellent rigidity and dimensional stability, the space environment big especially suitable for day and night temperature, using it as reinforcement can
To prepare the various structural types and functional material that coefficient of thermal expansion is zero, it has also become solve outer space structure and work(
It can the indispensable crucial reinforcement of composite material.
And the preparation of high-modulus Carbon fibe be unable to do without continuous superhigh temperature graphitization equipment, China's independent development at present
Superhigh temperature graphitizing furnace thermal insulation material is usually using (such as the Chinese invention patent such as PAN based carbon fiber felts body, carbon carbon composite
CN102797075A carbon felt content of ashes), but currently on the market is high, usually in 1000ppm or more, what hot stage overflowed
Volatile matter meeting heavy corrosion graphite heater, greatly reduces the service life of graphitizing furnace.And carbon black passes through 2300 DEG C or more
Purity height (≤40ppm) after graphitization processing, heat insulation effect is good.But rarely have graphitizing furnace using high-purity carbon black as heat preservation at present
Material, it is because carbon black granularity causes it not answer extensively on a large scale compared with small, dust is big, fill, replacement is not easy to trace it to its cause
With.
It can be seen that the material selection of the superhigh temperature graphitizing furnace insulating layer of current China independent development and structure design side
Face causes its superhigh temperature service life short there are still shortcoming, cannot still fully meet and prepare high-modulus Carbon fibe and continuously grow
It is prepared by the requirement of silk, the production domesticization and industrialization for seriously having constrained China's high-modulus Carbon fibe.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of horizontal direct current
The continuous superhigh temperature graphitizing furnace of resistance-type.The characteristics of equipment, can be significantly carried using high-purity carbon black as thermal insulation material
High heat preservation performance significantly reduces thermal losses；The graphite hair that protection sleeve pipe is conveniently replaceable damage is installed outside graphite heater
Hot body；Hydraulicefficiency elevation structure is installed below furnace body convenient for filling and replacement heat preservation carbon black；Three-stage screw connection structure is easy to
It realizes the replacement of rapid wear section graphite heater, significantly reduces operating cost, realize industrial applications.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive, warmed operating temperature is at 2400~3000 DEG C.Including
Graphite heater, protection sleeve pipe, copper electrode, thermal insulation material, furnace shell, thermometer hole, hydraulicefficiency elevation structure and supporting rack.Its feature exists
In：Entire furnace body is horizontal type structure, and graphite heater is connected through a screw thread by three sections of isometric isostatic pressing formed graphite pipes and is formed, in stone
The both ends of black heater are equipped with water-cooled copper electrode, and graphite protective sleeve pipe is equipped with outside graphite heater, and graphite is protected
High-purity carbon black is filled between protecting pipe and furnace shell and is used as thermal insulation material, and thermometer hole is reserved on furnace shell, is installed below entire furnace body
There are hydraulicefficiency elevation structure and supporting rack.
The graphite heater is connected through a screw thread by three sections of isometric isostatic pressing formed graphite pipes, and wherein interlude is work temperature
Area, temperature is up to 3000 DEG C, and front and back two sections are auxiliary warm area, and temperature is no less than 300mm up to 2600 DEG C, per segment length.
The copper electrode is for giving graphite heater galvanization itself.
The material of the protection sleeve pipe is isostatic pressed fine grained high purity graphite.
The thermal insulation material is the high-purity carbon black by 2300 DEG C of graphitization processings.
The thermometer hole is connected to graphite heater by the graphite siphunculus being embedded in carbon black insulating layer.
The hydraulicefficiency elevation structure and supporting rack when replacing, is carbon black-filled for tilting furnace body.
Compared with the prior art, the present invention has the following advantages：
1, using carbon black as thermal insulation material, heat-insulating property can not only be greatly improved, significantly reduce thermal losses, together
When can significantly extend the service life of graphitizing furnace.2600 DEG C of continuous operating times can be stablized more than March.
2, the graphite heater that protection sleeve pipe is conveniently replaceable damage is installed outside graphite heater；It is installed below furnace body
Hydraulicefficiency elevation structure and supporting rack are convenient for filling and replacement heat preservation carbon black.
3, graphite heater is easily achieved the replacement of rapid wear section graphite heater using three-stage screw connection structure, significantly
Operating cost is reduced, realizes industrial applications.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the furnace body and hydraulicefficiency elevation structure, support frame structure diagram of the present invention.
Reference sign:
| 1-furnace shell； | 2-thermometer holes； | 3-protection sleeve pipes； |
| 4-graphite heaters； | 5-thermal insulation materials； | 6-copper electrodes； |
| 7-hydraulicefficiency elevation structures； | 8-supporting racks； |
Specific implementation mode
Embodiment 1
As shown in Figure 1, the present invention includes graphite heater 4, protection sleeve pipe 3, copper electrode 6, thermal insulation material 5, furnace shell 1, surveys
Warm hole 2, hydraulicefficiency elevation structure 7 and supporting rack 8.Entire furnace body is horizontal type structure, and graphite heater 4 is by three sections of isometric isostatic presseds
Graphite-pipe is connected through a screw thread composition, water-cooled copper electrode 6 is equipped at the both ends of graphite heater 4, in graphite heater 4
Outside is equipped with graphite protective sleeve pipe 3, and high-purity carbon black is filled between graphite protective sleeve pipe 3 and furnace shell 1 as thermal insulation material 5, stove
It is reserved with thermometer hole 2 on shell 1, hydraulicefficiency elevation structure 7 and supporting rack 8 are installed below entire furnace body.
Graphite heater 4 is connected through a screw thread by three sections of isometric isostatic pressing formed graphite pipes, and wherein interlude is operation temperature area,
Temperature is up to 3000 DEG C, and front and back two sections are auxiliary warm area, and temperature is up to 2600 DEG C, wherein being no less than 300mm per segment length.Copper electricity
Pole 6 is mainly used for giving graphite heater 4 galvanization itself.The material of protection sleeve pipe 3 is isostatic pressed fine grained high purity graphite.Heat preservation
Material 5 is the high-purity carbon black by 2300 DEG C of graphitization processings.
The present embodiment is the specific embodiment of the present invention, specially following steps：
Step 1：First with high-purity argon gas to the air in graphite heater and insulating layer into line replacement, wait for each position in stove
Oxygen content≤5ppm when dew point≤- 40 DEG C, starts to heat up to electricity；
Step 2：Using the direct-fired form of resistance, graphite heater is integrally heated with the rate of heat addition of 5 DEG C/min
To 2600 DEG C, then keep the temperature；
Step 3：Carbon fibe is entered into graphite muffle thorax with the speed of 2m/min from the left end of graphitizing furnace, by 2600
DEG C continuous processing, treated, and Carbon fibe leaves from right end fire door, into lower one for the treatment of process, the Carbon fiber prepared with this technique
Dimension modulus can be up to 600GPa or more, and the continuous operation service life is up to more than March.
Step 4：When heat preservation carbon black damage needs replacing, one end that hydraulicefficiency elevation structure lifts furnace body is enabled, carbon black is made
It is thoroughly flowed out from burner hearth, while also allowing for filling, closely knit newer carbon black.
Embodiment 2
The present embodiment is the specific embodiment of the present invention, specially following steps：
The entirety of graphite heater will be heated to 2800 DEG C in step 2 in embodiment 1, then kept the temperature；With this technique system
Standby Carbon fibe modulus can be up to 800GPa or more, and the continuous operation service life is up to more than January.When graphitizing furnace heater damages
After, it is only necessary to the part damaged in three sections of Muffles is replaced, then can be reactivated.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention
In the protection domain of art scheme.
Claims (7)
1. a kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive, it is characterised in that：Including graphite heater (4), protection
Casing (3), copper electrode (6), thermal insulation material (5), furnace shell (1), thermometer hole (2), hydraulicefficiency elevation structure (7) and supporting rack (8), it is whole
A furnace body is horizontal type structure, and graphite heater (4) is connected through a screw thread by three sections of isometric isostatic pressing formed graphite pipes and is formed, in graphite
The both ends of heater (4) are equipped with water-cooled copper electrode (6), and graphite protective sleeve pipe is equipped with outside graphite heater (4)
(3), carbon black-filled between protection sleeve pipe (3) and furnace shell (1) to be used as thermal insulation material (5), it is reserved with thermometer hole (2) on furnace shell (1),
Hydraulicefficiency elevation structure (7) and supporting rack (8) are installed below entire furnace body, warmed operating temperature is at 2400~3000 DEG C.
2. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
The interlude of graphite heater (4) is operation temperature area, and temperature is up to 3000 DEG C, and front and back two sections are auxiliary warm area, and temperature is reachable
2600 DEG C, 300mm is no less than per segment length.
3. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
Copper electrode (6) is for giving graphite heater galvanization itself.
4. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
Graphite protective sleeve pipe (3) material be isostatic pressed fine grained high purity graphite.
5. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
Thermal insulation material (5) is the high-purity carbon black by 2300 DEG C of graphitization processings.
6. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
Thermometer hole (2) is that the graphite siphunculus by being embedded in carbon black thermal insulation material (5) is connected to graphite heater (4).
7. a kind of horizontal continuous superhigh temperature graphitizing furnace of direct current resistive according to claim 1, it is characterised in that：It is described
Hydraulicefficiency elevation structure (7) and supporting rack (8) when replacing, is carbon black-filled for tilting furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979298.4A CN106521711B (en) | 2016-11-08 | 2016-11-08 | A kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979298.4A CN106521711B (en) | 2016-11-08 | 2016-11-08 | A kind of continuous superhigh temperature graphitizing furnace of horizontal direct current resistive |
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| Publication Number | Publication Date |
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| CN106521711A CN106521711A (en) | 2017-03-22 |
| CN106521711B true CN106521711B (en) | 2018-10-19 |
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| DE102018108291A1 (en) * | 2018-04-09 | 2019-10-10 | Eisenmann Se | oven |
| 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 |
| CN112408379B (en) * | 2020-10-22 | 2022-04-22 | 中钢新型材料股份有限公司 | Temperature measuring tube arrangement method and temperature control method for isostatic pressing graphite production by Acheson furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN203021698U (en) * | 2012-09-06 | 2013-06-26 | 广州赛奥碳纤维技术有限公司 | Continuous graphitization superhigh-temperature tube furnace |
| CN104386682B (en) * | 2014-11-19 | 2017-01-11 | 宜宾天原集团股份有限公司 | Graphitization furnace and method for heat treatment of graphite powder by virtue of graphitization furnace |
| CN105036125B (en) * | 2015-09-08 | 2017-08-29 | 耿巨泉 | Lithium cell cathode material graphitizing furnace and graphitization technique |
| CN106498563B (en) * | 2016-11-08 | 2018-10-26 | 湖南东映碳材料科技有限公司 | A kind of continuous superhigh temperature graphitizing furnace of induction auxiliary resistance formula |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171115 Address after: 410000 Hunan province Changsha Wenxuan High-tech Development Zone, Road No. 27 building 2202 room Yuyuan Lu Valley F1 Applicant after: HUNAN DONGYING CARBON MATERIAL TECHNOLOGY CO.,LTD. Address before: Yuelu District City, Hunan province 410082 Changsha Lushan Road No. 2 Applicant before: Hunan University |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Horizontal direct-current resistance type continuous ultrahigh temperature graphitizing furnace Effective date of registration: 20190731 Granted publication date: 20181019 Pledgee: Bank of Changsha Limited by Share Ltd. science and Technology Branch Pledgor: HUNAN DONGYING CARBON MATERIAL TECHNOLOGY CO.,LTD. Registration number: 2019430000072 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 2202, building F1, Lugu Yuyuan, No.27 Wenxuan Road, high tech Development Zone, Changsha City, Hunan Province Patentee after: Hunan Dongying Carbon Materials Technology Co.,Ltd. Address before: Room 2202, building F1, Lugu Yuyuan, No.27 Wenxuan Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN DONGYING CARBON MATERIAL TECHNOLOGY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 410000, No. 467 Xianjiahu West Road, Lugu Street, Xiangjiang New District, Changsha City, Hunan Province Patentee after: Hunan Dongying Carbon Materials Technology Co.,Ltd. Country or region after: China Address before: Room 2202, building F1, Lugu Yuyuan, No.27 Wenxuan Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: Hunan Dongying Carbon Materials Technology Co.,Ltd. Country or region before: China |
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