CN203820968U - Carbonization furnace for carbon fiber production - Google Patents
Carbonization furnace for carbon fiber production Download PDFInfo
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- CN203820968U CN203820968U CN201420144069.7U CN201420144069U CN203820968U CN 203820968 U CN203820968 U CN 203820968U CN 201420144069 U CN201420144069 U CN 201420144069U CN 203820968 U CN203820968 U CN 203820968U
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- furnace
- carbon fiber
- heat
- graphite
- furnace shell
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Abstract
The utility model discloses a carbonization furnace for carbon fiber production. The carbonization furnace comprises a hearth, heating electrodes, a thermal preservation system and a furnace shell, wherein the hearth is a cavity formed by lap joint of graphite plates in a sectional mode; the multiple heating electrodes are arranged around the hearth from the outer periphery of a longitudinal section at intervals; the thermal preservation system consists of a ceramic fiber felt, a thermal insulation coating, a graphite hard felt and a high-temperature infrared reflective coating from exterior to interior; the high-temperature infrared reflective coating is coated between the heating electrodes and the graphite hard felt; the thermal insulation coating is coated between the ceramic fiber felt and the graphite hard felt; the thickness of the thermal insulation coating is between 8mm and 18mm; the outer layer of the thermal preservation system is coated by the furnace shell. The temperature of the hearth is independently controlled by the heating electrodes in a sectional mode, the operating temperature of the hearth is in a range from 800 to 1700 DEG C due to the ingenious design of the thermal insulation coating, the graphite hard felt and the high-temperature infrared reflective coating, and the carbonization furnace has the advantages of high operating temperature, stable performance, low energy consumption, convenience in maintenance and the like.
Description
Technical field
The utility model relates to a kind of carbide furnace, particularly relates to a kind of high temperature carbonization furnace, be applicable to pre-oxidation precursor high temperature cabonization operation carbon fiber large-scale production; Belong to high-temperature heating device technical field.
Background technology
The excellent properties such as that carbon fiber and carbon fiber product have is lightweight, intensity is high, Heat stability is good and dimensionally stable, so be widely used in space vehicle and field of aerospace as the reinforcing material of primary structure.
In carbon fiber production process, high temperature cabonization equipment is extremely crucial.Carbide furnace is high because have operating temperature, large to the performance impact of carbon fiber, and comprehensive technical level requires high, becomes the key equipment in large-scale production line.Because carbon-fiber high-temperature carbonizing apparatus is started late in China, developed country carries out technical limitations to China's high temperature cabonization equipment and has seriously hindered China's carbon fiber industry sound development.
The carbide furnace of producing for carbon fiber at present, the material of heating element heater is silicon-carbon or silicon molybdenum, and burner hearth is carborundum or corundum material, and insulation material is aluminium silicate wool, and furnace shell is individual layer carbon steel.Maximum operation (service) temperature is no more than 1400 ℃; Type of furnace heat-insulating property is poor, and power consumption is serious; Body of heater poor air-tightness, the burner hearth life-span is short, can not meet and prepare the more demand of high modulus carbon fiber.
Utility model content
The purpose of this utility model is to overcome present technical deficiency, and a kind of large-scale production that is applicable to is provided, and operating temperature is high, and the high temperature carbonization furnace of the carbon fiber of good heat insulating can meet the needs that scale carbon fiber is produced.
The utility model object realizes by following technical scheme:
A carbide furnace of producing for carbon fiber, comprises burner hearth, heating electrode, heat-insulation system and furnace shell; The cavity that burner hearth is formed by graphite cake segmentation overlap joint, a plurality of heating electrodes interval is from outside, longitudinal cross-section around burner hearth setting, and burner hearth at least arranges 2 warm areas; Heat-insulation system consists of ceramic fiber blanket, heat insulating coat, the hard felt of graphite and high-temperature infrared ray heat-reflective coating from outside to inside; Coated with high temperature infrared heat reflectance coating between the hard felt of heating electrode and graphite, the coating thickness of high-temperature infrared ray heat-reflective coating is between 5mm～20mm; Between the hard felt of ceramic fiber blanket and graphite, apply heat insulating coat; The thickness of heat insulating coat is between 8mm～18mm; Heat-insulation system skin is wrapped up by furnace shell, and furnace shell is bubble-tight sandwich, internal layer hollow; Furnace shell is provided with cooling water inlet and coolant outlet, is provided with cooling-water duct in furnace shell; High temperature carbonization furnace lateral cross section direction is interval with a plurality of carbon fibers gateway, and carbon fiber gateway is provided with sealing device.
Preferably, described cooling water inlet is arranged on the left side of furnace shell, and coolant outlet is arranged on the right side of furnace shell.Described cooling water inlet is arranged on the lower floor of furnace shell, and coolant outlet is arranged on the upper strata of furnace shell.Described cooling-water duct is serpentine channel.The hard felt of described graphite cross section is rectangle, and corner is fillet.The cross section of described high-temperature infrared ray heat-reflective coating is rectangle, and corner is circle.
With respect to prior art, the utlity model has following beneficial effect:
1) temperature of the utility model the utility model burner hearth is independently controlled by heating electrode segmentation, burner hearth at least arranges 2 warm areas, and by the ingehious design of heat insulating coat, the hard felt of graphite and high-temperature infrared ray heat-reflective coating, guarantee that burner hearth operating temperature is between 800 ℃～1700 ℃, there is operating temperature high, stable performance, the advantage such as energy consumption is little, easy to maintenance.
2) the utility model compared with prior art, for large-scale production high-performance carbon fibre provides a kind of low energy consumption, high-temperature, stable performance, safe and reliable, easy to maintenance high temperature cabonization equipment.
3) the utility model can meet the demand of large-scale production high-performance carbon fibre, has driven the fast development of domestic carbon fiber equipment, technology.
Accompanying drawing explanation
Fig. 1 is the structural representation for the carbide furnace of carbon fiber production;
Fig. 2 be in Fig. 1 A ?the sectional view in A cross section;
Shown in figure: cooling water inlet 1, furnace shell 2, ceramic fiber blanket 3, heat insulating coat 4, the hard felt 5 of graphite, high-temperature infrared ray heat-reflective coating 6, heating electrode 7, graphite cake 8, burner hearth 9, carbon fiber 10, coolant outlet 11 and sealing device 12.
The specific embodiment
For understanding better the utility model, below in conjunction with accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
As shown in Figure 1, 2, a kind of carbide furnace of producing for carbon fiber, comprises burner hearth 9, heating electrode 7, heat-insulation system and furnace shell; The cavity that burner hearth 9 is formed by graphite cake 8 segmentation overlap joints, a plurality of heating electrodes 7 intervals arrange around burner hearth 9 from longitudinal (left and right directions Fig. 1) outside, cross section, to burner hearth 9 heating; Heat-insulation system from outside to inside, by ceramic fiber blanket 3, heat insulating coat 4, the hard felt 5 of graphite and high-temperature infrared ray heat-reflective coating 6 forms; Coated with high temperature infrared heat reflectance coating 6 between the hard felt 5 of heating electrode 7 and graphite, the coating thickness of high-temperature infrared ray heat-reflective coating is between 5mm～20mm; The hard felt of graphite 5 cross sections are rectangle, and corner is fillet.High-temperature infrared ray heat-reflective coating 6 cross sections are rectangle, and corner is fillet.Between the hard felt 5 of ceramic fiber blanket 3 and graphite, apply heat insulating coat 4; The thickness of heat insulating coat 4 is between 8mm～18mm; Heat-insulation system skin is wrapped up by furnace shell 2, and furnace shell 2 is bubble-tight sandwich, internal layer hollow; Furnace shell is provided with cooling water inlet 1 and coolant outlet 11, in furnace shell 2, is provided with cooling-water duct, interior logical cooling water; High temperature carbonization furnace lateral cross section direction is interval with a plurality of carbon fibers gateway, and carbon fiber gateway is provided with sealing device 12; Carbon fiber 10 enters from the carbon fiber entrance of high temperature carbonization furnace lateral cross section direction (fore-and-aft direction Fig. 1), connects burner hearth 9, from carbon fiber outlet, draws.Fire door is wide fire door, and the width of fire door is between 0.8m～2.2m.
Preferably, cooling water inlet 1 is arranged on carbide furnace left side, and coolant outlet 11 is arranged on carbide furnace right side; Cooling water inlet 1 is arranged on carbide furnace lower floor, and coolant outlet 11 is arranged on carbide furnace upper strata.It is waterway channel that furnace shell 2 inside arrange snakelike, and cooling water carries out cooling along waterway channel to body of heater.
Sealing device 12 is air curtain sealing devices, at the upper and lower side of sealing device, gas curtain is set and meets and discusses, and high pressure industrial nitrogen produces gas curtain from shower nozzle ejection, makes carbide furnace internal atmosphere and extraneous air isolated, reaches sealing effectiveness.Sealing device is used more at the equipment of high melt.
Heat insulating coat 4 is ZS-1 thermostable heat-isolating materials of Beijing will Sheng Weihua Chemical Co., Ltd., is a kind of pulverous complex phase silicon polymer material, can form good faying face with the hard felt 5 of graphite and ceramic fiber blanket 3.
High-temperature infrared ray heat-reflective coating 6 is ZS-1061 high-temperature-resistant far infrared radiation coatings of Beijing will Sheng Weihua Chemical Co., Ltd., and a kind of operating temperature can reach 1700 ℃ of nano silicate materials.
Graphite cake 8 is separated into a plurality of warm areas burner hearth 9, and the temperature of burner hearth 9 is independently controlled by heating electrode 7 segmentations; Burner hearth 9 is at least separated 2 warm areas, is conventionally separated into 5 warm areas, is respectively: 800 ℃, 1200 ℃, 1500 ℃, 1200 ℃, 800 ℃.It is for the burner hearth 9 at carbide furnace forms the temperature field slowly changing that a plurality of warm areas are set, and is beneficial to the transformation of carbon fiber interior molecules structure.The operating temperature of burner hearth 9 is between 800 ℃～1700 ℃.
High temperature carbonization furnace is heated by 7 pairs of stove inner chambers of heating electrode, and after heating, burner hearth 9 operating temperatures, between 800 ℃～1700 ℃, are controlled the heating-up temperature of heating electrode 7, at least two warm areas of the interior formation of burner hearth 9.Carbon fiber 10 is inner through being heated from burner hearth 9.Heat-insulation system is incubated stove cavity high-temperature region, and heat-insulation system is outward furnace shell 2, and high temperature carbonization furnace two ends fire door is established sealing device 12, as shown in Figure 2, prevents that extraneous gas from entering.
Between heating electrode 7 and the hard felt 5 of graphite, apply one deck high-temperature infrared ray heat-reflective coating 6, the infrared ray that high-temperature infrared ray heat-reflective coating has made to carry large energy can reflect and prevent that energy from escaping at stove cavity.In order to make infrared reflection more fully and furnace chamber heating-up temperature stable and uniform, the inner surface in the hard felt of graphite and high-temperature infrared ray heat-reflective coating cross section is round rectangle.The hard felt 5 of ceramic fiber blanket 3 and graphite, for heat-insulation and heat-preservation, applies one deck complex phase silicon polymer heat insulating coat 4 in addition between ceramic fiber blanket and the hard felt of graphite, forms good faying face with ceramic fiber blanket 3 and the hard felt 5 of graphite, plays better effect of heat insulation.
The airtight sandwich that furnace shell 2 is steel, interior logical cooling water to be to reduce the temperature of furnace body outer wall, and cooling water 1 enters from cooling water inlet, from coolant outlet 12, flows out.
Claims (6)
1. a carbide furnace of producing for carbon fiber, is characterized in that, comprises burner hearth, heating electrode, heat-insulation system and furnace shell; The cavity that burner hearth is formed by graphite cake segmentation overlap joint, a plurality of heating electrodes interval is from outside, longitudinal cross-section around burner hearth setting, and burner hearth at least arranges 2 warm areas; Heat-insulation system consists of ceramic fiber blanket, heat insulating coat, the hard felt of graphite and high-temperature infrared ray heat-reflective coating from outside to inside; Coated with high temperature infrared heat reflectance coating between the hard felt of heating electrode and graphite, the coating thickness of high-temperature infrared ray heat-reflective coating is between 5mm～20mm; Between the hard felt of ceramic fiber blanket and graphite, apply heat insulating coat; The thickness of heat insulating coat is between 8mm～18mm; Heat-insulation system skin is wrapped up by furnace shell, and furnace shell is bubble-tight sandwich, internal layer hollow; Furnace shell is provided with cooling water inlet and coolant outlet, is provided with cooling-water duct in furnace shell; High temperature carbonization furnace lateral cross section direction is interval with a plurality of carbon fibers gateway, and carbon fiber gateway is provided with sealing device.
2. the carbide furnace of producing for carbon fiber according to claim 1, is characterized in that; Described cooling water inlet is arranged on the left side of furnace shell, and coolant outlet is arranged on the right side of furnace shell.
3. the carbide furnace of producing for carbon fiber according to claim 2, is characterized in that; Described cooling water inlet is arranged on the lower floor of furnace shell, and coolant outlet is arranged on the upper strata of furnace shell.
4. the carbide furnace of producing for carbon fiber according to claim 1, is characterized in that; Described cooling-water duct is serpentine channel.
5. the carbide furnace of producing for carbon fiber according to claim 1, is characterized in that; The hard felt of described graphite cross section is rectangle, and corner is fillet.
6. the carbide furnace of producing for carbon fiber according to claim 1, is characterized in that; The cross section of described high-temperature infrared ray heat-reflective coating is rectangle, and corner is fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144069.7U CN203820968U (en) | 2014-03-27 | 2014-03-27 | Carbonization furnace for carbon fiber production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144069.7U CN203820968U (en) | 2014-03-27 | 2014-03-27 | Carbonization furnace for carbon fiber production |
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| Publication Number | Publication Date |
|---|---|
| CN203820968U true CN203820968U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420144069.7U Withdrawn - After Issue CN203820968U (en) | 2014-03-27 | 2014-03-27 | Carbonization furnace for carbon fiber production |
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| CN (1) | CN203820968U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898634A (en) * | 2014-03-27 | 2014-07-02 | 华南理工大学 | High-temperature carbonizing furnace for carbon fiber production |
| CN104266470A (en) * | 2014-09-28 | 2015-01-07 | 南京同皓干燥设备有限公司 | Far-infrared tunnel drying oven |
| SE2250768A1 (en) * | 2022-06-22 | 2023-12-23 | Stora Enso Oyj | Furnace configured for treatment of particulate matter in a controlled gaseous environment |
-
2014
- 2014-03-27 CN CN201420144069.7U patent/CN203820968U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898634A (en) * | 2014-03-27 | 2014-07-02 | 华南理工大学 | High-temperature carbonizing furnace for carbon fiber production |
| CN103898634B (en) * | 2014-03-27 | 2015-09-16 | 华南理工大学 | A kind of carbon fiber production high temperature carbonization furnace |
| CN104266470A (en) * | 2014-09-28 | 2015-01-07 | 南京同皓干燥设备有限公司 | Far-infrared tunnel drying oven |
| SE2250768A1 (en) * | 2022-06-22 | 2023-12-23 | Stora Enso Oyj | Furnace configured for treatment of particulate matter in a controlled gaseous environment |
| WO2023248097A1 (en) * | 2022-06-22 | 2023-12-28 | Stora Enso Oyj | Furnace configured for treatment of particulate matter in a controlled gaseous environment |
| SE545807C2 (en) * | 2022-06-22 | 2024-02-06 | Stora Enso Oyj | Furnace configured for treatment of particulate matter in a controlled gaseous environment |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20150916 |
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| RGAV | Abandon patent right to avoid regrant |