JPS61516A - Atmospheric gas generator - Google Patents
Atmospheric gas generatorInfo
- Publication number
- JPS61516A JPS61516A JP12107984A JP12107984A JPS61516A JP S61516 A JPS61516 A JP S61516A JP 12107984 A JP12107984 A JP 12107984A JP 12107984 A JP12107984 A JP 12107984A JP S61516 A JPS61516 A JP S61516A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- catalyst chamber
- catalyst
- combustion
- pipe
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
- C21D1/763—Adjusting the composition of the atmosphere using a catalyst
Abstract
Description
【発明の詳細な説明】
本発明は加熱炉において使用する熱処理用保護雰囲気ガ
スの発生装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for generating a protective atmosphere gas for heat treatment used in a heating furnace.
従来、加熱炉における金属の保護雰囲気ガスは、メタン
系炭化水素ガスと空気との混合ガスを吸熱型ガス発生用
触媒に通して変成することにより生成しており、例えば
鉄の保護雰囲気は前記混合ガスを、加熱装置により１０
５０℃以上に加熱した触媒を通して変成生成されている
。Conventionally, the protective atmosphere gas for metals in a heating furnace has been generated by passing a mixed gas of methane-based hydrocarbon gas and air through an endothermic gas generation catalyst to transform it. The gas was heated by a heating device for 10 minutes.
It is metamorphosed through a catalyst heated to 50°C or higher.
しかしながら、従来の保護雰囲気ガスの発生装置では、
触媒を加熱するための加熱装置は、この触媒加熱以外の
目的には使用されておらず省エネルギー上不効率なもの
となっていた。又、触媒に送り込むメタン系炭化水素ガ
スを多量に必要とする上、触媒の加熱温度も高轡を必要
とするものであった。However, with conventional protective atmosphere gas generators,
The heating device for heating the catalyst is not used for purposes other than heating the catalyst, making it inefficient in terms of energy conservation. In addition, a large amount of methane-based hydrocarbon gas is required to be fed to the catalyst, and the heating temperature of the catalyst is also high.
この発明は、上記事情に鑑がみなされたものであって、
保護雰囲気ガスの生成において使用される触媒の加熱装
置を有効に利用できるようにすると共にメタン系炭化水
素ガスの必要量を減少させ且つ触媒の加熱温度を低下さ
せうるところの雰囲気ガス発生装置を提供することを目
的としており、先端にガス燃焼バーナーを装備した燃焼
筒を設けると共にこの燃焼筒の外周に該燃焼筒によって
加熱される吸熱型ガス発生用触媒を充填した触媒室を周
設してなる変成器を形成し、前記燃焼筒と接続し燃焼筒
における燃焼排ガスを変成器外・へ送り出す排ガス管を
設け、この排ガス管とメタン系炭化水素ガスを送り込む
生ガス管を連結し、この連結部と前記変成器内の触媒室
とを接続して排ガスとメタン系炭化水素ガスの混入ガス
を触媒室内に送り込む混入ガス管を設け、前記触媒によ
って変成された雰囲気ガスを変成器外へ送り出す送出管
を設けたことを特徴とする雰囲気ガス発生装置を要旨と
している。This invention was made in consideration of the above circumstances, and
Provided is an atmosphere gas generation device that enables effective use of a heating device for a catalyst used in generating a protective atmosphere gas, reduces the required amount of methane-based hydrocarbon gas, and lowers the heating temperature of the catalyst. The combustion tube is equipped with a combustion tube equipped with a gas combustion burner at the tip, and a catalyst chamber filled with an endothermic gas generation catalyst heated by the combustion tube is installed around the outer circumference of the combustion tube. A transformer is formed, an exhaust gas pipe is provided which is connected to the combustion cylinder and sends the combustion exhaust gas in the combustion cylinder to the outside of the transformer, and this exhaust gas pipe is connected to a raw gas pipe through which methane-based hydrocarbon gas is sent, and this connecting portion is provided. and a catalyst chamber in the shift converter, and a mixed gas pipe for sending mixed gas of exhaust gas and methane-based hydrocarbon gas into the catalyst chamber, and a delivery pipe for sending atmospheric gas transformed by the catalyst to the outside of the shift converter. The gist of the present invention is an atmospheric gas generator characterized by being provided with.
以下、本発明のによる雰囲気ガス発生装置４
を図示した実施例に基づいて説明する。Hereinafter, the atmospheric gas generator 4 according to the present invention will be described.
will be explained based on the illustrated embodiment.
第１図及び第２図は本発明による雰囲気ガス発生装置の
第１実施例を示している。１は変成器であり、該変成器
１は中央部の燃焼筒２の外周に触媒室３を周設した構成
となっている。変成器ｌの周壁４と前記触媒室３の間に
は触媒室３の底面から突出した燃焼筒２の下端部と接続
し燃焼排ガスを集捉する通路５が配管されている。前記
燃焼筒２は上端部にガス燃焼バーナー６を装備しており
、該バーナー６には混合ガス管７が接続され、プロパン
やブタン等のメタン系炭化水素ガスと空気の混合ガスを
バーナー６に送り込んでいる（図中矢符Ａ）。触媒室３
は下方部分３Ｃを除いた部分が仕切板８によって仕切ら
れており、この仕切板８を境にして第−触媒室３ａ及び
第二触媒室３ｂに分割されている。そして、第−触媒室
３ａ及び第二触媒室３ｂにはそれぞれ前記燃焼筒により
加熱される吸熱型ガス発生用触媒が充填されており、下
方部分３ｃは空間部分となっている。９は熱電対であり
、該熱電対９により検知される触媒温度値によりバーナ
ー６に送られる前記混合ガスの混合比が調整される。前
記燃焼排ガスの通路５の上方は、この燃焼排ガスを変成
器１外へ送り出す（図中矢符Ｂ）排ガス管１０と接続し
ており、この排ガス管１０はメタン系炭化水素ガスを送
り込む（図中矢符Ｃ）生ガス管１１と変成器１外で連結
している。尚、生ガス管１１から送り込まれるメタン系
炭化水素ガスの量は、加熱炉の雰囲気のカーボンポテン
シャルをフィードバンクすることによりその雰囲気に合
わせて調整されている。前記排ガス管ｌＯと生ガス管１
１の連結部１２は、前記第−触媒室３ａ上部と混入ガス
層重３によって接続しており、排ガスとメタン系炭化水
素ガスの混入ガスはこの混入ガス管１３を通って、第−
触媒室３ａ内に送り込まれている（図中矢符Ｄ）。一方
、第二触媒室３ｂの上部には送出管１４が設けられてお
り、この送出管１４は図外の加熱炉に連結されている。1 and 2 show a first embodiment of an atmospheric gas generator according to the present invention. Reference numeral 1 denotes a shift converter, and the shift converter 1 has a structure in which a catalyst chamber 3 is provided around the outer periphery of a combustion cylinder 2 in the center. A passage 5 is piped between the peripheral wall 4 of the shift converter 1 and the catalyst chamber 3, and is connected to the lower end of the combustion cylinder 2 protruding from the bottom of the catalyst chamber 3 to collect combustion exhaust gas. The combustion tube 2 is equipped with a gas combustion burner 6 at its upper end, and a mixed gas pipe 7 is connected to the burner 6 to supply a mixed gas of air and methane-based hydrocarbon gas such as propane or butane to the burner 6. (arrow mark A in the figure). Catalyst chamber 3
A portion other than the lower portion 3C is partitioned by a partition plate 8, and is divided into a first catalyst chamber 3a and a second catalyst chamber 3b with this partition plate 8 as a border. The first catalyst chamber 3a and the second catalyst chamber 3b are each filled with an endothermic gas generating catalyst heated by the combustion cylinder, and the lower portion 3c is a space. Reference numeral 9 denotes a thermocouple, and the mixing ratio of the mixed gas sent to the burner 6 is adjusted based on the catalyst temperature value detected by the thermocouple 9. The upper part of the combustion exhaust gas passage 5 is connected to an exhaust gas pipe 10 that sends this combustion exhaust gas out of the transformer 1 (arrow B in the figure), and this exhaust gas pipe 10 sends methane-based hydrocarbon gas (arrow B in the figure). C) It is connected to the raw gas pipe 11 outside the transformer 1. The amount of methane-based hydrocarbon gas sent from the raw gas pipe 11 is adjusted according to the atmosphere of the heating furnace by feeding the carbon potential of the atmosphere. The exhaust gas pipe IO and the raw gas pipe 1
The connecting portion 12 of No. 1 is connected to the upper part of the first catalyst chamber 3a by a mixed gas layer 3, and the mixed gas of exhaust gas and methane-based hydrocarbon gas passes through this mixed gas pipe 13 to the second catalyst chamber 3a.
The catalyst is fed into the catalyst chamber 3a (arrow D in the figure). On the other hand, a delivery pipe 14 is provided in the upper part of the second catalyst chamber 3b, and this delivery pipe 14 is connected to a heating furnace (not shown).
即ち、第−触媒室３ａに送り込まれた混入ガスは該第−
触媒室３ａ、下方部分３Ｃ１第二触媒室、３ｂの順に触
媒室３内を通過しく図中矢符Ｅ）、第−触媒室３ａ及び
第二触媒室３ｂに充填された吸熱型ガス発生用触媒によ
って吸熱変成されたのち、この送出管１４から変成器１
外へ送り出され（図中矢符Ｆ）、図外の加熱炉内へ噴出
されるのである。尚、１５は昇温時間短縮用のヒーター
であるが、必要がなければ設けなくてもよい。That is, the mixed gas sent into the first catalyst chamber 3a is
The catalyst chamber 3a, the lower part 3C1, the second catalyst chamber, and 3b pass through the catalyst chamber 3 in this order (arrow E in the figure), and the endothermic gas generation catalyst filled in the first catalyst chamber 3a and the second catalyst chamber 3b. After being endothermically transformed, this delivery pipe 14 is connected to the transformer 1.
It is sent out (arrow F in the figure) and ejected into a heating furnace (not shown). Note that 15 is a heater for shortening the heating time, but it may not be provided if it is not necessary.
次に、第３図及び第４図は本発明による雰囲気ガス発生
装置の第２実施例を示しており、前記第１実施例と対応
する部材には同一符合を付しである。変成器１゛は中央
部の燃焼筒２”の外周に該燃焼筒２゛によって加熱され
る吸熱型ガス発生用触媒を充填した触媒室３を周設した
構成となっている。本実施例においては燃焼排ガスの通
路５”は触媒室３の内側に形成されている。即ち、燃焼
筒２゛の内部は、内筒２ａ”によって下方において内外
が連通している二重構造になっており、内筒２ａ’ の
上方にガス燃焼バーナー６を装備し、内筒２ａ’ の外
側を燃焼排ガスの通路５”としている。触媒室３は前述
した第１実施例と同様の構成で仕切板８によって第−触
媒室３ａと第二触媒室３ｂに分割されており、又、混合
ガス管７、排ガス管１０、生ガス管Ｉｆ ｆｆｉ人ガス
管１３、送出管１４の配管は上述第一実施例と同様であ
る。この第２実施例に示すような雰囲気ガス発生装置は
触媒室３が変成器１°の周壁４と接した構造となってい
るため、触媒の吸熱反応に要した熱量の余裕分を外部に
発散することができ、従って第５図に示すようにコンヘ
ア一式の連続光輝焼入炉へのワーク加熱終端部等に取り
つけることにより炉Ａの保温に寄与することができる。Next, FIGS. 3 and 4 show a second embodiment of the atmospheric gas generator according to the present invention, in which members corresponding to those in the first embodiment are given the same reference numerals. The shift converter 1'' has a structure in which a catalyst chamber 3 filled with an endothermic gas generating catalyst heated by the combustion tube 2'' is provided around the outer periphery of a combustion tube 2'' in the center.In this embodiment, A combustion exhaust gas passage 5'' is formed inside the catalyst chamber 3. That is, the inside of the combustion tube 2'' has a double structure in which the inside and outside are connected to each other at the bottom by an inner tube 2a'', and a gas combustion burner 6 is installed above the inner tube 2a'. The outside of the cylinder is used as a combustion exhaust gas passage 5''. The catalyst chamber 3 has the same structure as the first embodiment described above, and is divided into a first catalyst chamber 3a and a second catalyst chamber 3b by a partition plate 8, and also has a mixed gas pipe 7, an exhaust gas pipe 10, and a raw gas pipe. If ffi The piping of the gas pipe 13 and the delivery pipe 14 is the same as in the first embodiment described above. Since the atmospheric gas generator shown in this second embodiment has a structure in which the catalyst chamber 3 is in contact with the peripheral wall 4 of the shift converter at 1°, the excess amount of heat required for the endothermic reaction of the catalyst can be dissipated to the outside. Therefore, as shown in FIG. 5, it is possible to contribute to the heat retention of the furnace A by attaching it to the workpiece heating terminal end of the continuous bright quenching furnace of the conhair set.
更に、第５図のようにして使用すれば、発生した雰囲気
ガスを送り出す送出管１４の配管距離が短くてすむとい
う利点もある。Furthermore, when used as shown in FIG. 5, there is an advantage that the length of the delivery pipe 14 for sending out the generated atmospheric gas can be shortened.
次表は、触媒の変成温度７８０℃〜９５０ ℃において
上述したごとき本発明の実施に用いた装置によって生成
された雰囲気ガスの成分を（オｔエイ、７あ。。The following table shows the components of the atmospheric gas produced by the apparatus used in the practice of the invention as described above at a catalyst transformation temperature of 780 DEG C. to 950 DEG C.
表に示すようにＣＯ２の含有量は１％以内、ＨＬＯの露
点温度は１０℃以内の数値を示しており、加熱炉の雰囲
気として十分良好な数値となっており、従来のように触
媒にメタン系炭化水素ガスと水素の混合ガスを送り込み
１０５０℃以上で加熱変成した場合の数値と比べ何等遜
色のない数値となっている。As shown in the table, the CO2 content is within 1% and the dew point temperature of HLO is within 10℃, which is a sufficiently good value for the atmosphere of the heating furnace, and methane is not used in the catalyst as in the conventional method. The values are comparable to those obtained when a mixed gas of hydrocarbon gas and hydrogen is fed and heated to 1050° C. or higher for metamorphosis.
以上に説明したような雰囲気ガス発生装置によれば、従
来触媒の加熱以外に利用されていなかった触媒用加熱装
置を有効に利用し、この加熱装置の排ガスを雰囲気ガス
生成の原料として用いるようにしたから、省エネルギー
に著しい効果を奏することができる。又、雰囲気ガスを
発生させるために必要とするメタン系炭化水素ガスの使
用量を極めて少量にすることができ、しかも触媒におけ
る雰囲気ガスへの変成（吸熱反応）に必要な温度も従来
に比べて塵かに低い温度でよい。従って、この面からも
省エネルギー上著しい効果を奏することができ、且つ発
生される雰囲気ガスは極めて良質なものである。According to the atmospheric gas generating device as described above, the catalyst heating device, which has conventionally not been used for anything other than heating the catalyst, can be effectively used, and the exhaust gas of this heating device can be used as a raw material for generating the atmospheric gas. Therefore, it can have a significant effect on energy saving. In addition, the amount of methane-based hydrocarbon gas required to generate atmospheric gas can be reduced to an extremely small amount, and the temperature required for transformation (endothermic reaction) into atmospheric gas in the catalyst is also lower than before. A very low temperature is sufficient. Therefore, from this point of view as well, a remarkable effect can be achieved in terms of energy saving, and the atmospheric gas generated is of extremely high quality.
尚、本発明装置により発生する雰囲気ガスに少量のメタ
ン系炭化水素ガスを添加することにより浸炭雰囲気を容
易に生成できる。Note that a carburizing atmosphere can be easily generated by adding a small amount of methane-based hydrocarbon gas to the atmospheric gas generated by the apparatus of the present invention.
第１図は本発明装置の第１実施例の縦断面説明図、第２
図は第１図のＸ−Ｘ断面図、第３図は本発明装置の第２
実施例の縦断面説明図、第４図は第３図のＹ−Ｙ断面図
、第５図は第２実施例装置の使用状態説明図。
２．２° ・・・燃焼筒 ３・・・触媒室６・・・ガ
ス燃焼バーナーFIG. 1 is an explanatory longitudinal cross-sectional view of the first embodiment of the device of the present invention, and the second
The figure is a sectional view taken along the line XX in Fig. 1, and Fig. 3 is a sectional view taken along the line XX of Fig.
FIG. 4 is a longitudinal cross-sectional view of the embodiment, FIG. 4 is a YY cross-sectional view of FIG. 3, and FIG. 2.2°... Combustion tube 3... Catalyst chamber 6... Gas combustion burner
Claims (1)
ると共にこの燃焼筒の外周に該燃焼筒によって加熱され
る吸熱型ガス発生用触媒を充填した触媒室を周設してな
る変成器を形成し、前記燃焼筒と接続し燃焼筒における
燃焼排ガスを変成器外へ送り出す排ガス管を設け、この
排ガス管とメタン系炭化水素ガスを送り込む生ガス管を
連結し、この連結部と前記変成器内の触媒室とを接続し
て排ガスとメタン系炭化水素ガスの混入ガスを触媒室内
に送り込む混入ガス管を設け、前記触媒によって変成さ
れた雰囲気ガスを変成器外へ送り出す送出管を設けたこ
とを特徴とする雰囲気ガス発生装置。(1) A shift converter is formed by providing a combustion tube equipped with a gas combustion burner at the tip and surrounding the outer periphery of this combustion tube with a catalyst chamber filled with an endothermic gas generation catalyst that is heated by the combustion tube. An exhaust gas pipe is provided that connects to the combustion tube and sends the combustion exhaust gas in the combustion tube out of the transformer, and this exhaust gas pipe is connected to a raw gas pipe that feeds methane-based hydrocarbon gas, and this connecting part and the inside of the transformer are connected. A mixed gas pipe is provided which connects the catalyst chamber of the catalyst chamber and sends a mixed gas of exhaust gas and methane-based hydrocarbon gas into the catalyst chamber, and a delivery pipe is provided which sends the atmospheric gas transformed by the catalyst to the outside of the shift converter. Characteristic atmospheric gas generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107984A JPS61516A (en) | 1984-06-12 | 1984-06-12 | Atmospheric gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107984A JPS61516A (en) | 1984-06-12 | 1984-06-12 | Atmospheric gas generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61516A true JPS61516A (en) | 1986-01-06 |
| JPH0348121B2 JPH0348121B2 (en) | 1991-07-23 |
Family
ID=14802331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12107984A Granted JPS61516A (en) | 1984-06-12 | 1984-06-12 | Atmospheric gas generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61516A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62170490U (en) * | 1986-04-16 | 1987-10-29 | ||
| EP0261462A2 (en) * | 1986-09-25 | 1988-03-30 | Linde Aktiengesellschaft | Radiant tube burner comprising a catalyst bed for a heat treatment furnace |
| JP2005290509A (en) * | 2004-04-02 | 2005-10-20 | Chugai Ro Co Ltd | Gas production device for carburizing |
| JP2015533827A (en) * | 2012-10-09 | 2015-11-26 | ユニバーシティ オブ サザン カリフォルニア | Efficient and self-sufficient methanol production from methane source via oxidative twin reforming |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654204A (en) * | 1979-10-12 | 1981-05-14 | Kanto Yakin Kogyo Kk | Atmospheric gas generator for heat treatment |
-
1984
- 1984-06-12 JP JP12107984A patent/JPS61516A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654204A (en) * | 1979-10-12 | 1981-05-14 | Kanto Yakin Kogyo Kk | Atmospheric gas generator for heat treatment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62170490U (en) * | 1986-04-16 | 1987-10-29 | ||
| JPH0424240Y2 (en) * | 1986-04-16 | 1992-06-08 | ||
| EP0261462A2 (en) * | 1986-09-25 | 1988-03-30 | Linde Aktiengesellschaft | Radiant tube burner comprising a catalyst bed for a heat treatment furnace |
| 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 |
| JP2015533827A (en) * | 2012-10-09 | 2015-11-26 | ユニバーシティ オブ サザン カリフォルニア | Efficient and self-sufficient methanol production from methane source via oxidative twin reforming |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0348121B2 (en) | 1991-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |