JPS62129683A - Method of thermally treating atmosphere - Google Patents
Method of thermally treating atmosphereInfo
- Publication number
- JPS62129683A JPS62129683A JP26815985A JP26815985A JPS62129683A JP S62129683 A JPS62129683 A JP S62129683A JP 26815985 A JP26815985 A JP 26815985A JP 26815985 A JP26815985 A JP 26815985A JP S62129683 A JPS62129683 A JP S62129683A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- raw material
- material gas
- stirring fan
- supply port
- 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.)
- Granted
Links
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- Furnace Details (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は雰囲気熱処理方法に関し、特に原料ガスを直接
炉内に供給する熱処理方法において。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an atmospheric heat treatment method, and particularly to a heat treatment method in which raw material gas is directly supplied into a furnace.
スーテイングを防止するとともに原料ガスの熱分解促進
を図ったものである。This is intended to prevent sooting and promote thermal decomposition of the raw material gas.
従来、雰囲気熱処理方法として種々の方法が提供されて
いるが、そのほとんどは原料ガスを変成炉で変成させて
得た変成ガスを使用するものであった。Conventionally, various methods have been provided as atmospheric heat treatment methods, but most of them use a metamorphosed gas obtained by metamorphosing a raw material gas in a metamorphosis furnace.
近時、上記変成炉使用に伴う不経済を考え。Recently, I have been thinking about the uneconomical effects of using the above-mentioned converter furnace.
変成炉を使用せず、原料ガス（炭化水素ガスと酸化性ガ
ス等）を直接雰囲気炉内に供給する方法が提供されてい
る（特開昭５１−７０１３６号公報、特開昭５９−２２
２５７を号公報、特公昭５５−２４５００号公報参照）
。A method has been proposed in which raw material gases (hydrocarbon gas, oxidizing gas, etc.) are directly supplied into an atmosphere furnace without using a conversion furnace (Japanese Patent Laid-Open No. 51-70136, Japanese Patent Laid-open No. 59-22).
(See Publication No. 257 and Special Publication No. 55-24500)
.
上記従来の各種熱処理方法においては２ア３図示のごと
く、原料ガスの供給口＋ｔｎを専ら炉内の上部、すなわ
ち、炉天井に設けた攪拌ファンＯ２の回転ＩＩＩ］（１
３１部あるいは攪拌ファンａｚに近接させた地点に設け
ていた。In the various conventional heat treatment methods described above, as shown in Figure 2A3, the raw material gas supply port +tn is exclusively provided at the upper part of the furnace, that is, the rotation of the stirring fan O2 on the furnace ceiling.
It was installed at the 31st part or at a point close to the stirring fan az.
しかしながら、被処理品装入時には炉温が急激に降下し
、攪拌ファンａ２の回転により、さらに炉温か降下させ
られる欠点があった。図中０４）はヒーターである。However, there is a drawback that the furnace temperature drops rapidly when the articles to be processed are charged, and the rotation of the stirring fan a2 causes the furnace temperature to drop further. 04) in the figure is a heater.
そこで１本件発明者は炉内温度の降下を防ぎ。Therefore, the inventor of the present invention prevents the temperature inside the furnace from dropping.
供給された原料ガス等の熱分解を促進するため被処理品
装入時に攪拌ファンを一時停止させることを提案した（
特願昭５９−１５０９０２号参照）。In order to promote the thermal decomposition of the supplied raw material gas, etc., it was proposed to temporarily stop the stirring fan when loading the materials to be processed (
(See Japanese Patent Application No. 150902/1983).
しかし々から、その場合には炉内の上部から供給された
原料ガスは冷えた状態で重いため同図示の矢印のごとく
、被処理品の上面に流入して直接被処理品（Ｙ）に接触
して分解したのち対流し、スーテイングの原因となる欠
点があった。However, in that case, the raw material gas supplied from the upper part of the furnace is cold and heavy, so it flows into the top surface of the workpiece (Y) as shown by the arrow in the figure, and comes into direct contact with the workpiece (Y). It has the disadvantage that convection occurs after decomposition, causing sooting.
本発明は上記スーティングを防止し、さらに供給された
原料ガスの熱分解促進を図ったものである。The present invention aims to prevent the above-mentioned sooting and further promote thermal decomposition of the supplied raw material gas.
本発明は上記問題点を解決するため、炉内の上部及び底
部に原料ガスの供給口を設け、被処理品装入時には攪拌
ファンの回転を止めるとともに底部の供給口より原料ガ
スを供給し、昇温開始後は攪拌ファンを回転させるとと
もに上部の供給口から原料ガスを供給する方法を採用し
たもので桑、る。In order to solve the above-mentioned problems, the present invention provides supply ports for raw material gas at the top and bottom of the furnace, and when charging the objects to be processed, the rotation of the stirring fan is stopped and the raw material gas is supplied from the supply port at the bottom. After the temperature starts to rise, a method is adopted in which a stirring fan is rotated and raw material gas is supplied from the supply port at the top.
本発明では被処理品（Ｘ）の装入前にはヒータ（２）が
入れられ、さらに攪拌ファン（３）が回転させられて炉
内温度及び雰囲気が所定値に制御されている。In the present invention, a heater (2) is installed before charging the workpiece (X), and a stirring fan (3) is rotated to control the temperature and atmosphere inside the furnace to predetermined values.
つぎに、熱処理炉（υ内に被処理品（Ｘ）が装入される
が、装入時には第２図示のごとく、攪拌ファン（３）の
回転が一時止められる。Next, the product to be treated (X) is charged into the heat treatment furnace (υ), but at the time of charging, the rotation of the stirring fan (3) is temporarily stopped as shown in the second figure.
その結果、炉内温度の降下が押えられると同時に炉内が
自然対流となる。すなわち、ヒーター（２）と炉壁間（
Ｃ）（ｄ）が赤熱状態となっており、その間の雰囲気が
熱分解して上昇させられる。As a result, the fall in the temperature inside the furnace is suppressed and at the same time natural convection occurs inside the furnace. In other words, between the heater (2) and the furnace wall (
C) (d) is in a red-hot state, and the atmosphere therebetween is thermally decomposed and raised.
その状態で原料ガスが底部の供給口（５）から流入する
ため、流入した原料ガスは上記対流に沿って最も加熱さ
れているヒーター（２）と炉壁間（Ｃ）（ｄ）を通るこ
ととなり、直接被処理品（Ｘｌに接触することがないと
同時に原料ガスの熱分解が効率よく行われるものである
。In this state, the raw material gas flows in from the supply port (5) at the bottom, so the raw material gas flows along the convection and passes between the heater (2), which is heated the most, and the furnace wall (C) (d). Therefore, there is no direct contact with the product to be processed (Xl), and at the same time, the thermal decomposition of the raw material gas is carried out efficiently.
本発明の方法において使用される熱処理炉（りは従来の
この熱処理炉と同様に内部にヒーター（２）及び攪拌フ
ァン（３）が設けられて構成される。The heat treatment furnace used in the method of the present invention has a heater (2) and a stirring fan (3) installed therein, similar to the conventional heat treatment furnace.
そして、従来設けられていた炉内の上部の原料ガスの供
給口（４）の他、底部にも原料ガスの供給口（５）が設
けられ、それぞれの供給口（４）及び（５）から外部に
導出された供給管（６）及び（７）にそれぞれ開閉弁（
８）及び（９）を設け、それらを原料ガス供給源α０と
連通させて任意の供給口（４）及び（５）に原料ガスを
供給できるよう構成される。In addition to the conventional source gas supply port (4) at the top of the furnace, a source gas supply port (5) is also provided at the bottom, and from each supply port (4) and (5). On-off valves (
8) and (9) are provided and are configured to communicate with the raw material gas supply source α0 so that the raw material gas can be supplied to arbitrary supply ports (4) and (5).
図中◇ηは拡散板、（Ｘ）は被処理品である。In the figure, ◇η is a diffuser plate, and (X) is a processed product.
本発明の詳細な説明すると、被処理品（Ｘ）の装入前に
はヒーター（２）が入れられ、さらに攪拌ファン（３）
も回転させられて炉内温度及び炉内雰囲気が所定値に制
御されている。To explain the present invention in detail, a heater (2) is installed before charging the product to be processed (X), and a stirring fan (3) is installed.
The temperature and atmosphere inside the furnace are controlled to predetermined values by rotating the furnace.
本発明では被処理品（ＸＩの装入時に攪拌ファン（３）
の回転が止められる。In the present invention, the stirring fan (3) is used when charging the product to be processed (XI).
rotation is stopped.
その結果、炉内温度の降下が押えられる。すなわち、第
２図示のごとく、攪拌ファン（３）を回転しつづけると
同図に点線（ａ）で示すごとく下降するものが、攪拌フ
ァン（３）の回転を止めることにより同図に実線（ｈ）
で示すごとくその降下が押えられるものであり、原料ガ
スの熱分解を停滞させることがないものである。As a result, the fall in the temperature inside the furnace is suppressed. In other words, as shown in the second figure, if the stirring fan (3) continues to rotate, the object that descends as shown by the dotted line (a) in the same figure will fall as shown by the solid line (h) in the figure when the stirring fan (3) stops rotating. )
As shown in the figure, the drop is suppressed, and the thermal decomposition of the raw material gas does not stagnate.
本発明では被処理品（Ｘ）の装入及び攪拌ファン（３）
の回転の一時停止とともに炉内の底部の供給口（５）か
ら所定量の原料ガスが供給される。In the present invention, charging of the product to be processed (X) and stirring fan (3)
When the rotation of the furnace is temporarily stopped, a predetermined amount of raw material gas is supplied from the supply port (5) at the bottom of the furnace.
それらは開閉弁（９）及び（８）を操作することにより
行われる。These are performed by operating the on-off valves (9) and (8).
その結果１、底部の供給口（５）から供給された原料ガ
スはツ・１図示の実線矢印のごとく対流する。As a result 1, the raw material gas supplied from the bottom supply port (5) convects as shown by the solid line arrows in Figure 2-1.
すなわち、攪拌ファン（３）の回転が止められているた
め、自然対流となる。That is, since the rotation of the stirring fan (3) is stopped, natural convection occurs.
詳細に述べると、ヒーター（２）と炉壁間（Ｃ）ｃｄ）
が赤熱状態となっており、その間の雰囲気が熱分解して
上昇させられ、それに伴い底部の供給口（５）から流入
した原料ガスが徐々に加熱上昇させられて熱分解させら
れるものであり、攪拌ファン（３）の回転時とは逆方向
の対流となるものである。In detail, between the heater (2) and the furnace wall (C) cd)
is in a red-hot state, the atmosphere between them is thermally decomposed and raised, and the raw material gas flowing in from the supply port (5) at the bottom is gradually heated up and thermally decomposed. Convection occurs in the opposite direction to that when the stirring fan (3) rotates.
その結果、底部の供給口（５）から流入した原料ガスが
直接被処理品（力に接触することなく、被処理品（Ｘ）
には熱分解した雰囲気ガスが接触することになるもので
あり、スーティングが生ずることがないものである。As a result, the raw material gas flowing in from the supply port (5) at the bottom is directly transferred to the processed material (the processed material (X) without coming into contact with the force).
The pyrolyzed atmospheric gas comes into contact with the pyrolyzed gas, and sooting does not occur.
つぎに炉内温度が昇温状態となったら攪拌ファン（３）
を回転させるとともに原料ガスの供給を上部の供給口（
４）に切換えるものである。その結果、炉内雰囲気はツ
・１図示の一点鎖線矢印のごとき対流と々る。Next, when the temperature inside the furnace rises, turn on the stirring fan (3).
At the same time, the raw material gas is supplied through the upper supply port (
4). As a result, the atmosphere in the furnace undergoes convection as indicated by the dashed-dotted line arrow in Figure 2-1.
これはその後の熱処理工程における炉内雰囲気を攪拌に
より均一化させるためであり、それらは開閉弁（８）及
び（９）を操作することにより行われる。This is to make the atmosphere in the furnace uniform in the subsequent heat treatment step by stirring, and this is done by operating the on-off valves (8) and (9).
本発明によれば、原料ガスを直接炉内に供給する熱処理
方法において、被処理品装入時における炉内温度降下を
極力押えて原料ガスの熱分解を促進させることができる
と同時にスーテイングを完全防止できる効果を得ること
ができるものである。According to the present invention, in a heat treatment method in which raw material gas is directly supplied into the furnace, it is possible to suppress the temperature drop in the furnace as much as possible when charging the article to be treated and promote thermal decomposition of the raw material gas, and at the same time completely prevent sooting. It is possible to obtain a preventive effect.
図面は本発明の一実施例を示すもので、第１図は本発明
の方法を実施する熱処理炉の断面図、第２図は本発明の
タイムチャート、第３図は従来一般の熱処理炉の断面図
である。
（１）・・・熱処理炉、（２）・・・ヒーター、（３）
・・・攪拌ファン、（４）・・・（上部の原料ガスの）
供給口、（５）・・・（下部の原料ガスの〕供給口、（
６） （７）・・・供給管、（８） （９）・・・開閉
弁。The drawings show one embodiment of the present invention. Figure 1 is a cross-sectional view of a heat treatment furnace for implementing the method of the present invention, Figure 2 is a time chart of the present invention, and Figure 3 is a diagram of a conventional heat treatment furnace. FIG. (1) Heat treatment furnace, (2) Heater, (3)
... Stirring fan, (4) ... (for upper raw material gas)
Supply port, (5)... (lower raw material gas) supply port, (
6) (7)... Supply pipe, (8) (9)... Open/close valve.
Claims (1)
内の上部及び底部に上記原料ガスの供給口を設け、被処
理品装入時には攪拌ファンの回転を止めるとともに底部
の供給口より原料ガスを供給し、昇温開始後は攪拌ファ
ンを回転させるとともに上部の供給口から原料ガスを供
給することを特徴とする雰囲気熱処理方法。In a heat treatment method in which raw material gas is directly supplied into the furnace, supply ports for the raw material gas are provided at the top and bottom of the furnace, and when loading the objects to be processed, the rotation of the stirring fan is stopped and the raw material gas is supplied from the supply port at the bottom. An atmospheric heat treatment method characterized by supplying raw material gas from an upper supply port while rotating a stirring fan after the temperature starts to rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26815985A JPS62129683A (en) | 1985-11-28 | 1985-11-28 | Method of thermally treating atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26815985A JPS62129683A (en) | 1985-11-28 | 1985-11-28 | Method of thermally treating atmosphere |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129683A true JPS62129683A (en) | 1987-06-11 |
| JPH0524430B2 JPH0524430B2 (en) | 1993-04-07 |
Family
ID=17454722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26815985A Granted JPS62129683A (en) | 1985-11-28 | 1985-11-28 | Method of thermally treating atmosphere |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62129683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203888A (en) * | 1988-02-05 | 1989-08-16 | Murata Mfg Co Ltd | Heat treating furnace |
| JPH04151420A (en) * | 1989-12-20 | 1992-05-25 | Robert A Ritter | Poisonous waste incinerator |
-
1985
- 1985-11-28 JP JP26815985A patent/JPS62129683A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203888A (en) * | 1988-02-05 | 1989-08-16 | Murata Mfg Co Ltd | Heat treating furnace |
| JPH04151420A (en) * | 1989-12-20 | 1992-05-25 | Robert A Ritter | Poisonous waste incinerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524430B2 (en) | 1993-04-07 |
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