JPS63120115A - Heat-treating apparatus - Google Patents
Heat-treating apparatusInfo
- Publication number
- JPS63120115A JPS63120115A JP26395486A JP26395486A JPS63120115A JP S63120115 A JPS63120115 A JP S63120115A JP 26395486 A JP26395486 A JP 26395486A JP 26395486 A JP26395486 A JP 26395486A JP S63120115 A JPS63120115 A JP S63120115A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- liquid
- core tube
- furnace core
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims 1
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 8
- 239000004917 carbon fiber Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007770 graphite material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は熱処理装置、特に繊維糸条を雰囲気ガス中、約
３００〜３０００’Ｃで連続的に焼成処理する炭素繊維
おるいは黒鉛繊維の製造用熱処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat treatment apparatus, particularly for the treatment of carbon fibers or graphite fibers in which fiber yarns are continuously fired at about 300 to 3000'C in an atmospheric gas. The present invention relates to a manufacturing heat treatment apparatus.
［従来の技術］
一般に炭素繊維ないし黒鉛ｐＪ、維（以下、単に炭素繊
維という）をｒ！！Ａ造する際の焼成工程では、プリカ
ーサを約３００〜３０００℃の高温雰囲気ガス中にて焼
成する。この熱処理装置には竪型と横型とがある。何ず
れの熱処理装置にあっても炉内の雰囲気ガスとして窒素
やアルゴン等が用いられ、その使用但を節減するために
、炉の繊維糸条出口部には主として液シールによるシー
ル手段が採用されている（例えば特公昭４７−２４９６
９号公報、同５３−７５３７号公報など）。[Prior Art] Carbon fiber or graphite pJ, fiber (hereinafter simply referred to as carbon fiber) is generally referred to as r! ! In the firing step when manufacturing A, the precursor is fired in a high-temperature atmospheric gas of about 300 to 3000°C. This heat treatment apparatus has a vertical type and a horizontal type. In any heat treatment equipment, nitrogen, argon, etc. are used as the atmospheric gas in the furnace, and in order to reduce the amount of gas used, a liquid seal is mainly used at the fiber outlet of the furnace. (For example, Special Publick No. 47-2496
No. 9, No. 53-7537, etc.).
［発明が解決しようとする問題点］
しかしながら、上記熱処理装置、特に黒鉛材を炉芯管と
する炉において、シール液として水を採用する場合、炉
芯管の輻射熱によって気化した水蒸気か炉芯管内へ進入
し、それが炉芯管の寿命を短縮させるのみならず、得ら
れる炭素繊維の品質を著しく低下させるという問題があ
った。[Problems to be Solved by the Invention] However, when water is used as a sealing liquid in the above-mentioned heat treatment apparatus, especially in a furnace whose core tube is made of graphite material, water vapor vaporized by the radiant heat of the furnace core tube or vaporized inside the furnace core tube. There was a problem in that this not only shortened the life of the furnace core tube but also significantly degraded the quality of the obtained carbon fiber.
すなわち、黒鉛材を炉芯管とする炉では、その炉芯管に
水蒸気が進入すると、約３５０℃以上の領域で酸化反応
が起こり、黒鉛材が消耗する。従って、該炉芯管はその
水蒸気の進入次第で、寿命が著しく短縮すると共に、そ
の停機経理に伴う稼効率の低下は避けられなかった。That is, in a furnace whose furnace core tube is made of graphite material, when water vapor enters the furnace core tube, an oxidation reaction occurs in a region of about 350° C. or higher, and the graphite material is consumed. Therefore, depending on the ingress of water vapor into the furnace core tube, the lifespan is significantly shortened, and a decrease in operating efficiency due to the shutdown of the furnace core tube is unavoidable.
一方、炉芯管の酸化消耗は管壁の肉厚斑をもたらし、こ
のことが直ちに被処理糸条に対する焼成炭となって、炭
素繊維の品質斑を惹起していた。On the other hand, oxidative wear and tear of the furnace core tube resulted in uneven thickness of the tube wall, which immediately turned into burnt charcoal against the yarn to be treated, causing uneven quality of the carbon fibers.
本発明の目的は、上記従来技術の問題点を排除し、熱処
理装置において液シール手段を採用する場合の、炉芯管
の寿命延長と、得られる炭素繊維の品質向上を図ること
にある。An object of the present invention is to eliminate the above-mentioned problems of the prior art, and to extend the life of the furnace core tube and improve the quality of the obtained carbon fiber when a liquid sealing means is employed in a heat treatment apparatus.
［問題点を解決するための手段］
本発明の上記目的は、繊維糸条を連続的に処理する熱処
理装置において、該炉下部の繊維糸条取出用開口部に液
シール部を設けると共に、該液シール部のシール液を冷
却することによって達成できる。[Means for Solving the Problems] The above-mentioned object of the present invention is to provide a heat treatment apparatus for continuously treating fiber threads, in which a liquid seal portion is provided at the opening for taking out the fiber threads in the lower part of the furnace; This can be achieved by cooling the sealing liquid in the liquid sealing part.
以下、本発明を図面を参照しながら具体的に説明する。Hereinafter, the present invention will be specifically explained with reference to the drawings.
第１図は本発明に係る熱処理装置を示す概略図である。FIG. 1 is a schematic diagram showing a heat treatment apparatus according to the present invention.
図において、１は被処理糸条であり、２の炉芯管内を下
方へ向かって進行し、３のシール槽中のシール水４を通
過して系外へ取出される。In the figure, 1 is a yarn to be treated, which travels downward in the furnace core tube 2, passes through seal water 4 in a seal tank 3, and is taken out of the system.
なあ、５は下部シール管、６は不活性ガス供給ノズル、
７は不活性ガス吸引ノズル、８はヒーター、９は炉体で
ある。By the way, 5 is the lower seal pipe, 6 is the inert gas supply nozzle,
7 is an inert gas suction nozzle, 8 is a heater, and 9 is a furnace body.
本発明の熱処理装置には、炉下部の繊維糸条取出用開口
部に設けられた液シール部におけるシール液を冷却する
ところに発明の特徴がある。The heat treatment apparatus of the present invention is characterized in that the sealing liquid in the liquid sealing section provided at the fiber thread take-out opening in the lower part of the furnace is cooled.
すなわち、熱処理装置にあける液シール部の水温と炉芯
管内の水分率との関係は、第２図に示すとおり、水温が
上昇するにつれて炉芯管内の水分率は上昇し、炉芯管内
は高湿化する。例えば、１９℃のシール水では炉芯管内
の水分率が約２０ｐｐｍに止どまるのに対して、冷却す
ることなく用いた常温（３５℃）のシール水では水分率
が約１１０ ｐｐｍと著しく上昇する。In other words, the relationship between the water temperature at the liquid seal part in the heat treatment equipment and the moisture content in the furnace core tube is as shown in Figure 2.As the water temperature rises, the moisture content in the furnace core tube increases; moisten. For example, with seal water at 19°C, the moisture content in the furnace core tube remains at about 20 ppm, whereas with seal water at room temperature (35°C) used without cooling, the moisture content increases significantly to about 110 ppm. do.
もちろん、炉芯管内の高湿化は、前述したように、炉芯
管の構造材である黒鉛質の酸化消耗を促進させるよう作
用し、かかる現象は高温焼成における程顕著でおる。Of course, as mentioned above, the high humidity inside the furnace core tube acts to accelerate the oxidative consumption of graphite, which is the structural material of the furnace core tube, and this phenomenon becomes more pronounced the higher the temperature is fired.
このためシール液として水を用いる際には、それを低温
に保つことが不可欠となり、これによって炉芯管の酸化
消耗が防止できることになる。Therefore, when using water as a sealing liquid, it is essential to keep it at a low temperature, thereby preventing oxidative consumption of the furnace core tube.
この際の冷却手段としては、シール液が常時所望の温度
範囲に保ち得る冷却手段であれば、何ら制限なく公知の
冷却手段が適用できる。またその水温は２５℃以下が好
ましく、これより高温になると、炉芯管内の低湿化が不
充分となって黒鉛質からなる炉芯管の寿命を他の構造材
である１例えば断熱レンガなどと同程度にまで延長させ
ることが出来難い。As the cooling means at this time, any known cooling means can be used without any restriction as long as it can keep the sealing liquid within a desired temperature range at all times. In addition, the water temperature is preferably 25 degrees Celsius or lower. If the water temperature is higher than this, the humidity inside the furnace core tube will be insufficiently reduced, and the life of the graphite furnace core tube will be reduced compared to other structural materials such as insulation bricks. It is difficult to extend it to the same extent.
［発明の効果］
以上述べた如く、本発明の熱処理装置は炉下部におＣブ
る液シール部のシール液を、常時冷却しておくことによ
って、炉芯管内が低湿化され、炉芯管材でおる黒鉛質の
酸化消耗が抑制されるため、炉芯管の寿命が著しく延長
し、その稼動率が上昇する。また炉芯管の酸化消耗が抑
制されるため、被処理糸条に対する焼成炭が減少し、得
られる炭素繊維の物性２品位などのバラツキが大巾に減
少する等、顕著な効果を奏するのである。[Effects of the Invention] As described above, the heat treatment apparatus of the present invention constantly cools the sealing liquid in the liquid sealing part flowing in the lower part of the furnace, thereby reducing the humidity inside the furnace core tube and reducing the temperature of the furnace core tube material. Since the oxidative consumption of graphite is suppressed, the life of the furnace core tube is significantly extended and its operating rate is increased. In addition, since the oxidative wear and tear of the furnace core tube is suppressed, the amount of charcoal used in the yarn to be treated is reduced, and the variation in physical properties of the resulting carbon fibers is greatly reduced, resulting in remarkable effects. .
第１図は本発明に係る熱処理装置を示す概略図、第２図
は熱処理装置におりる液シール部の水温と。
炉芯管内の水分率との関係を示す図でおる。
１：被処理糸条
２；炉芯管
３；シール槽
４；シール水
５；下部シール管
６；不活性ガス供給ノズル
７；不活性ガス吸引ノズルFIG. 1 is a schematic diagram showing a heat treatment apparatus according to the present invention, and FIG. 2 shows the temperature of water at a liquid sealing part entering the heat treatment apparatus. This is a diagram showing the relationship with the moisture content in the furnace core tube. 1: yarn to be treated 2; furnace core tube 3; seal tank 4; seal water 5; lower seal tube 6; inert gas supply nozzle 7; inert gas suction nozzle
Claims (2)
、該炉下部の繊維糸条取出用開口部に液シール部を設け
ると共に、該液シール部のシール液を冷却することを特
徴とする熱処理装置。(1) A heat treatment apparatus that continuously processes fiber threads, characterized in that a liquid seal part is provided at the fiber thread take-out opening in the lower part of the furnace, and the sealing liquid in the liquid seal part is cooled. Heat treatment equipment.
水であり、その液温が２５℃以下である熱処理装置。(2) The heat treatment apparatus according to claim (1), wherein the sealing liquid is water and the temperature of the liquid is 25°C or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26395486A JPS63120115A (en) | 1986-11-07 | 1986-11-07 | Heat-treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26395486A JPS63120115A (en) | 1986-11-07 | 1986-11-07 | Heat-treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63120115A true JPS63120115A (en) | 1988-05-24 |
Family
ID=17396557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26395486A Pending JPS63120115A (en) | 1986-11-07 | 1986-11-07 | Heat-treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63120115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010065339A (en) * | 2008-09-10 | 2010-03-25 | Toray Ind Inc | Method and apparatus for producing carbon nanotube continuous fiber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131031A (en) * | 1978-03-25 | 1979-10-11 | Toho Rayon Co Ltd | Manufacturing device for graphite fibers |
| JPS58208421A (en) * | 1982-05-26 | 1983-12-05 | Toray Ind Inc | Upright heating furnace |
| JPS605683A (en) * | 1983-06-06 | 1985-01-12 | Fuji Photo Film Co Ltd | High resolution high sensitivity solid-state image sensor |
| JPS62162020A (en) * | 1985-12-30 | 1987-07-17 | Nikkiso Co Ltd | Water-sealing apparatus for carbonization furnace |
-
1986
- 1986-11-07 JP JP26395486A patent/JPS63120115A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131031A (en) * | 1978-03-25 | 1979-10-11 | Toho Rayon Co Ltd | Manufacturing device for graphite fibers |
| JPS58208421A (en) * | 1982-05-26 | 1983-12-05 | Toray Ind Inc | Upright heating furnace |
| JPS605683A (en) * | 1983-06-06 | 1985-01-12 | Fuji Photo Film Co Ltd | High resolution high sensitivity solid-state image sensor |
| JPS62162020A (en) * | 1985-12-30 | 1987-07-17 | Nikkiso Co Ltd | Water-sealing apparatus for carbonization furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010065339A (en) * | 2008-09-10 | 2010-03-25 | Toray Ind Inc | Method and apparatus for producing carbon nanotube continuous fiber |
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