JPS5855677A - Heat treatment furnace incorporating endothermic type gas generator - Google Patents
Heat treatment furnace incorporating endothermic type gas generatorInfo
- Publication number
- JPS5855677A JPS5855677A JP15676881A JP15676881A JPS5855677A JP S5855677 A JPS5855677 A JP S5855677A JP 15676881 A JP15676881 A JP 15676881A JP 15676881 A JP15676881 A JP 15676881A JP S5855677 A JPS5855677 A JP S5855677A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- retort
- furnace
- heat treatment
- treatment furnace
- 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
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- 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】
本発明は、吸熱型ガスを雰囲気ガスとする熱処理炉に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat treatment furnace using an endothermic gas as an atmospheric gas.
従来、吸熱型ガスを炉内雰囲気ガスとして使用 −する
場合には、別途設けられる変成炉内にニッケル系等の触
媒を充填したガス変成レトルトを配置し、メタン、ブタ
ン、プロパンなどの炭化水素ガスと所定比率の空気との
原料ガスを前記レトルト内に供給し、所定温度に保持さ
れた触媒に前記原料ガスを接触させることにより、変成
ガスとし、これを冷却装置で冷却したうえで熱処理炉に
供給している。Conventionally, when endothermic gas is used as the furnace atmosphere gas, a gas shift retort filled with a nickel-based catalyst is installed in a separately installed shift furnace, and hydrocarbon gases such as methane, butane, and propane are used. A raw material gas containing air and air at a predetermined ratio is supplied into the retort, and the raw material gas is brought into contact with a catalyst maintained at a predetermined temperature to produce a converted gas, which is cooled by a cooling device and then sent to a heat treatment furnace. supplying.
このように、吸熱型ガスを変成して、炉内雰囲気として
使用するには、変成炉のみならず冷却装置を必要として
高価になるという欠点を有していた。As described above, converting endothermic gas and using it as the atmosphere in the furnace requires not only a converting furnace but also a cooling device, which is expensive.
本発明は、吸熱型ガスを熱処理炉で使用するにあたって
は前記冷却装置が不要であること、および炉内の高温雰
囲気をガス変成レトルトの熱源として使用することがで
きないかを種々検討の結果なされたもので、熱処理炉内
にニッケル系、ロジｚ７．４系の触媒を充填したガス変
成レトルトを設け、前記原料ガスをレトルト内に装入し
、炉内の高温雰囲気およびレトルト内部に設けた加熱手
段で加熱することにより触媒を所定温度に保持して変成
ガスとし、この変成ガスを直接炉内に噴出するようにし
て、従来のものに比べて省エネルギーを図るとともに、
冷却装置を不要とした吸熱型ガス発生機を内蔵した熱処
理炉を提供しようとするものである。The present invention was made as a result of various studies to find out whether the cooling device is unnecessary when using an endothermic gas in a heat treatment furnace, and whether the high-temperature atmosphere inside the furnace can be used as a heat source for a gas conversion retort. A gas conversion retort filled with a nickel-based and Logi Z7.4-based catalyst is installed in the heat treatment furnace, and the raw material gas is charged into the retort, and the high-temperature atmosphere inside the furnace and heating means provided inside the retort are By heating the catalyst at a predetermined temperature, the catalyst is maintained at a predetermined temperature to produce a converted gas, and this converted gas is directly injected into the furnace, which saves energy compared to conventional systems.
The present invention aims to provide a heat treatment furnace with a built-in endothermic gas generator that does not require a cooling device.
つぎに、本発明を一実施例である添付図面にしたがって
説明する。Next, the present invention will be explained with reference to the accompanying drawings, which are one embodiment of the present invention.
第１図は本発明にかかる熱処理炉Ｔの断面図であって、
炉内にはラジアントチューブ１が、天井壁２には雰囲気
循環ファン３と、下記するガス変成レトルト５が設けら
れ、炉内に装入された支持構造４上の処理材Ｗは、炉内
雰囲気（吸熱型ガス）中で加熱されて熱処理されるもの
である。FIG. 1 is a sectional view of a heat treatment furnace T according to the present invention,
A radiant tube 1 is installed in the furnace, an atmosphere circulation fan 3 is provided on the ceiling wall 2, and a gas conversion retort 5 as described below is provided, and the processing material W on the support structure 4 charged into the furnace is controlled by the atmosphere inside the furnace. (endothermic gas) and undergoes heat treatment.
前記ガス変成レトルト５は、第２図に示すように、耐熱
合金製または耐熱セラミック製の外部レトルト６と、該
外部レトルト６内に内装され、内部に発熱体８と熱電対
９とからなる加熱手段１゜を内蔵した耐熱合金製または
耐熱セラミック製の内部レトルト７と、前記外部レトル
ト６と内部レトルト７との間で形成される空間１１に充
填されたニッケル系またはロジュウム系触媒層１．２と
からなる。As shown in FIG. 2, the gas conversion retort 5 includes an external retort 6 made of a heat-resistant alloy or a heat-resistant ceramic, and a heating element 8 and a thermocouple 9 housed inside the external retort 6. An internal retort 7 made of a heat-resistant alloy or heat-resistant ceramic and incorporating a means 1°, and a nickel-based or rhodium-based catalyst layer 1.2 filled in a space 11 formed between the external retort 6 and the internal retort 7. It consists of
なお、１３は触媒保持および予熱用の粒状耐火材からな
る充填層である。Note that 13 is a packed bed made of granular refractory material for catalyst retention and preheating.
そして、変成レトルト５の炉外部分に設けた供給口１４
から炭化水素ガス（プロパン、メタン、ブタン等）と空
気とを所定の割合となるように混合器１６で混合された
原料ガスが供給され、触媒層１２で吸熱型ガスに変成さ
れて噴出口１５から炉内に噴出し、炉内雰囲気ガスとな
る。１７．１８は流量計、１９は炭化水素ガス圧力調整
器である。A supply port 14 provided at the outside of the furnace of the metamorphic retort 5
A raw material gas in which hydrocarbon gas (propane, methane, butane, etc.) and air are mixed at a predetermined ratio in a predetermined ratio is supplied from the mixer 16 and is converted into an endothermic gas in the catalyst layer 12 and sent to the ejection port 15. The gas is ejected into the furnace and becomes the furnace atmosphere gas. 17 and 18 are flow meters, and 19 is a hydrocarbon gas pressure regulator.
前記触媒層１２で原料ガスを吸熱型ガスに変成するのに
必要な熱量は、炉内の高温雰囲気による外部レトルト６
への熱伝達と加熱手段１０による内部レトルト７とによ
る。また、ガス変成レトルト５内の温度は、内部レトル
ト７内に設けた熱電対９および温度調節計２０によって
、前記熱電対９からの信号と比較して開閉器２１を開閉
して制御し、前記触媒層の温度を原料ガスの反応を十分
に行なわせるに足る８２０〜１０００℃に維持されるよ
うになっている。The amount of heat required to convert the raw material gas into an endothermic gas in the catalyst layer 12 is determined by the external retort 6 due to the high temperature atmosphere inside the furnace.
by heat transfer to and internal retort 7 by means of heating means 10. The temperature inside the gas conversion retort 5 is controlled by a thermocouple 9 and a temperature controller 20 provided in the internal retort 7 by opening and closing a switch 21 in comparison with a signal from the thermocouple 9. The temperature of the catalyst layer is maintained at 820 to 1000°C, which is sufficient to cause a sufficient reaction of the raw material gas.
前記発熱体８は実施例の如くヒータに限らず、バーナと
してもよい。The heating element 8 is not limited to a heater as in the embodiment, but may be a burner.
以上の墾明で明らかなように、本発明によれば、吸熱型
ガス発生機である変成炉そのものを熱処理炉に組込んだ
構成とし、ガス変成に必要な熱源として炉内の高温雰囲
気を利用し、かつ従来においては冷却装置で一旦冷却し
た吸熱型ガスを昇温しでいた昇温工程が不要である。し
たがって、従来、変成炉加熱に約８００ Ｋｃａｌ ／
７？？、再加熱に約２５０ＫＧＬＩ／ｙｙｌ必要であっ
たものが、約２３０Ｋｃａｌ ／、１でよく、大巾な省
エネルギーを図ることができる。As is clear from the above description, according to the present invention, the conversion furnace itself, which is an endothermic gas generator, is incorporated into the heat treatment furnace, and the high temperature atmosphere inside the furnace is used as the heat source necessary for gas conversion. Furthermore, there is no need for a temperature raising process, which conventionally involves raising the temperature of endothermic gas that has been cooled once by a cooling device. Therefore, conventionally, about 800 Kcal /
7? ? , about 250 KGLI/yyl was required for reheating, but only about 230 Kcal/yyl is required, and a large amount of energy can be saved.
また、従来においては、熱処理炉の他に変成炉を設置し
なければならなかったが、本発明によれば、変成炉の設
置スペースが不要となり、スペースの有効利用をも可能
とするものである。Furthermore, in the past, it was necessary to install a shift furnace in addition to the heat treatment furnace, but according to the present invention, there is no need for installation space for a shift furnace, making it possible to use the space effectively. .
第１図は本発明にかかる熱処理炉の断面図で、第２図ｃ
−Ａ１図の変成レトルトの断面図である。
５・・・変成レトルト、６・・・外部レトルト、７・・
・内部レトルト、１０・・・加熱手段、１１・・・空間
、１２・・・触媒層、１４・・・供給口、１５・・・噴
出口、Ｔ・・・熱処理炉。
特 許 出 願 人 中外・嬉工業株式会社代理 人
弁理士 青白 葆 ほか２名第１図
手続補正書（自発）
１、事件の表示
昭和５６年特許願第 １５６７６８ 号２、発
明の名称
吸熱型ガス発生機を内蔵した熱処理炉
３、補正をする者
事件との関係 特許出願人
４、代理人
７、補正の内容
（１）明細書第５頁第５行「バーナとしてもよい。」と
あるを次のように訂正する。
「バーナとしてもよく、また、バッチ式熱処理炉のよう
に材料装入時に炉内温度が一時的に降下する場合には、
ガス変成レトルトの温度低下を防止するために前記ガス
変成レトルトの外周をカオウール等の断熱材で保温して
もよいものである。」以上Figure 1 is a sectional view of the heat treatment furnace according to the present invention, and Figure 2c
- It is a sectional view of the metamorphic retort of figure A1. 5... Metamorphic retort, 6... External retort, 7...
- Internal retort, 10... Heating means, 11... Space, 12... Catalyst layer, 14... Supply port, 15... Spout port, T... Heat treatment furnace. Patent Applicant: Chugai & Kiyoshi Kogyo Co., Ltd. Agent: Patent Attorney: Seihaku Bo and 2 others Figure 1 Procedural amendment (voluntary) 1. Indication of the case: 1982 Patent Application No. 156768 2. Name of the invention: Endothermic gas Relationship between the heat treatment furnace 3 with a built-in generator and the case of the person making the amendment Patent applicant 4, attorney 7, contents of the amendment (1) Page 5, line 5 of the specification, “May be used as a burner.” Correct as follows. It can also be used as a burner, and in cases where the temperature inside the furnace temporarily drops when charging materials, such as in a batch-type heat treatment furnace,
In order to prevent the temperature of the gas conversion retort from decreasing, the outer periphery of the gas conversion retort may be insulated with a heat insulating material such as copper wool. "that's all
Claims (2)
トが炉壁を貫通して取付けられるとともに、前記変成レ
トルトの炉外側に炭化水素ガスと空気とが所定比率に混
合された原料ガスの供給口を、また炉内側に前記触媒に
より変成された変成ガスの噴出口を設けたことを特徴と
する吸熱型ガス発生、機を内蔵した熱処理炉。(1) A gas shift retort filled with an endothermic gas generation catalyst is installed through the furnace wall, and a raw material gas containing a mixture of hydrocarbon gas and air at a predetermined ratio is supplied to the outside of the furnace of the shift retort. 1. A heat treatment furnace equipped with an endothermic gas generator, characterized in that a spout is provided inside the furnace, and a spout for discharging the gas transformed by the catalyst is provided inside the furnace.
ガスの噴出口をもつ外部レトルトおよび加熱手段が配置
される内部レトルトからなり、レトルト間の空隙部に触
媒が充填されることを特徴とする特許 ス発生機を内蔵した熱処理炉。(2) The gas conversion retort is characterized by comprising an external retort having a source gas supply port and a conversion gas jet port, and an internal retort in which a heating means is disposed, and a catalyst is filled in the void between the retorts. A heat treatment furnace with a built-in patented heat generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15676881A JPS6045795B2 (en) | 1981-09-30 | 1981-09-30 | Heat treatment furnace with built-in endothermic gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15676881A JPS6045795B2 (en) | 1981-09-30 | 1981-09-30 | Heat treatment furnace with built-in endothermic gas generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5855677A true JPS5855677A (en) | 1983-04-02 |
| JPS6045795B2 JPS6045795B2 (en) | 1985-10-12 |
Family
ID=15634882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15676881A Expired JPS6045795B2 (en) | 1981-09-30 | 1981-09-30 | Heat treatment furnace with built-in endothermic gas generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045795B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075516A (en) * | 1983-09-09 | 1985-04-27 | Toyo Rokougiyou Kk | Atmosphere generating mechanism in heating furnace |
| JPS62285516A (en) * | 1986-06-03 | 1987-12-11 | Sony Corp | Output buffer circuit |
| JPS6490028A (en) * | 1987-09-29 | 1989-04-05 | Osaka Oxygen Ind | Method for stabilizing start-up of generator for gaseous rx, gaseous ax and the like |
| JP2005290509A (en) * | 2004-04-02 | 2005-10-20 | Chugai Ro Co Ltd | Gas production device for carburizing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009038598B4 (en) * | 2009-08-26 | 2017-06-22 | Ipsen International Gmbh | Process and device for the treatment of process gases for heat treatment of metallic materials / workpieces in industrial furnaces |
-
1981
- 1981-09-30 JP JP15676881A patent/JPS6045795B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6075516A (en) * | 1983-09-09 | 1985-04-27 | Toyo Rokougiyou Kk | Atmosphere generating mechanism in heating furnace |
| JPS62285516A (en) * | 1986-06-03 | 1987-12-11 | Sony Corp | Output buffer circuit |
| JPS6490028A (en) * | 1987-09-29 | 1989-04-05 | Osaka Oxygen Ind | Method for stabilizing start-up of generator for gaseous rx, gaseous ax and the like |
| JP2005290509A (en) * | 2004-04-02 | 2005-10-20 | Chugai Ro Co Ltd | Gas production device for carburizing |
| JP4488782B2 (en) * | 2004-04-02 | 2010-06-23 | 中外炉工業株式会社 | Carburizing gas production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6045795B2 (en) | 1985-10-12 |
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