JPH0428035B2 - - Google Patents
Info
- Publication number
- JPH0428035B2 JPH0428035B2 JP26229284A JP26229284A JPH0428035B2 JP H0428035 B2 JPH0428035 B2 JP H0428035B2 JP 26229284 A JP26229284 A JP 26229284A JP 26229284 A JP26229284 A JP 26229284A JP H0428035 B2 JPH0428035 B2 JP H0428035B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- exothermic
- combustion
- furnace
- heating
- 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.)
- Expired
Links
- 239000007789 gas Substances 0.000 claims description 71
- 238000010438 heat treatment Methods 0.000 claims description 47
- 238000002485 combustion reaction Methods 0.000 claims description 46
- 238000001816 cooling Methods 0.000 claims description 19
- 239000002737 fuel gas Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Furnace Details (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
【発明の詳細な説明】
［従来技術］
本発明は加熱炉で雰囲気熱処理に用いられる発
熱型ガスを発生する発熱型ガス発生設備の構造に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Prior Art] The present invention relates to the structure of exothermic gas generation equipment that generates exothermic gas used for atmospheric heat treatment in a heating furnace.
［背景技術］
従来の発熱型ガス発生設備は第２図に示すよう
に燃料ガスと空気とを燃焼炉１に供給して燃焼炉
１で理論空気比以下で燃焼させ、冷却用熱交換器
２や冷凍機３よりなる冷却部４にて冷却して脱水
することにより発熱型ガスを発生するようになつ
ていた。しかしかかる従来例で形成される発熱型
ガスは冷却部４で冷却されたままであるので温度
が低く加熱炉に雰囲気ガスとして供給すると加熱
炉の温度を低下させるため加熱炉を加熱するため
の加熱燃焼装置で多くの燃焼ガスを要し、エネル
ギーの無駄となるという欠点があり、また雰囲気
を作るための発熱型ガスを発生するのに多くの燃
料ガスを必要とするという欠点があつた。[Background Art] As shown in FIG. 2, conventional exothermic gas generation equipment supplies fuel gas and air to a combustion furnace 1 and burns the fuel gas and air at a ratio below the stoichiometric air ratio. Exothermic gas is generated by cooling and dehydrating in a cooling section 4 consisting of a refrigerator 3 and a refrigerator 3. However, since the exothermic gas formed in such a conventional example remains cooled in the cooling section 4, its temperature is low and if it is supplied as atmospheric gas to the heating furnace, the temperature of the heating furnace is lowered by heating combustion to heat the heating furnace. This method has the drawback that the device requires a large amount of combustion gas, which wastes energy, and it also requires a large amount of fuel gas to generate the exothermic gas used to create the atmosphere.
［発明の目的］
本発明は叙述の点に鑑みてなされたものであつ
て、本発明の目的とするところは加熱炉で発生し
た燃焼排ガスで発熱型ガスを加熱して加熱した発
熱型ガスを加熱炉に供給できて加熱炉の加熱燃焼
装置で使用する燃料ガスを少なくして省エネルギ
ー化が図れ、しかも燃焼排ガスを燃焼炉に供給し
て燃焼炉に供給する燃料ガスを少なくできてこの
点でも省エネルギー化が図れる発熱型ガス発生設
備を提供するにある。[Object of the Invention] The present invention has been made in view of the above points, and the object of the present invention is to heat the exothermic gas by heating the exothermic gas with the combustion exhaust gas generated in the heating furnace. It can be supplied to the heating furnace, reducing the amount of fuel gas used in the heating and combustion equipment of the heating furnace, resulting in energy savings.Furthermore, it is possible to reduce the amount of fuel gas supplied to the combustion furnace by supplying combustion exhaust gas to the combustion furnace. The purpose of the present invention is to provide exothermic gas generating equipment that can save energy.
［発明の開示］
本発明発熱型ガス発生設備は、燃料ガスと空気
とを理論空気比以下で燃焼させる燃料炉１と、燃
焼炉１で発生したガスを冷却して脱水することに
より発熱型ガスを形成する冷却部４とより成る発
熱型ガス発生設備において、冷却部４と加熱炉５
との間の発熱型ガスの供給経路に加熱炉５の燃焼
排ガスと上記発熱型ガスとの熱交換をして発熱型
ガスを加熱する加熱用熱交換器６を配置し、上記
燃焼排ガスを上記燃焼炉１に供給するようにして
成ることを特徴とするものであつて、上述のよう
に構成することにより従来例の欠点を解決したも
のである。つまり冷却部４と加熱炉５との間の発
熱型ガスの供給経路に加熱炉５の燃焼排ガスと上
記発熱型ガスとの熱交換をして発熱型ガスを加熱
する加熱用熱交換器６を配置したことにより加熱
炉５の燃焼排ガスにて発熱型ガスを加熱して加熱
炉５に供給できて加熱炉５を加熱する加熱燃焼装
置に使用する燃料ガスを節約して省エネルギー化
が図れ、また燃焼排ガスを燃焼炉１に供給したこ
とにより発熱型ガスを形成するための原料となる
燃料ガスの使用量を少なくしてこの点でも省エネ
ルギー化が図れるようになつたものである。[Disclosure of the Invention] The exothermic gas generation equipment of the present invention includes a fuel furnace 1 that burns fuel gas and air at a stoichiometric air ratio or lower, and a gas generated in the combustion furnace 1 that cools and dehydrates the gas to generate exothermic gas. In exothermic gas generation equipment consisting of a cooling section 4 forming a cooling section 4 and a heating furnace 5,
A heating heat exchanger 6 for heating the exothermic gas by exchanging heat between the combustion exhaust gas of the heating furnace 5 and the exothermic gas is arranged in the exothermic gas supply path between the This is characterized in that it is supplied to the combustion furnace 1, and by configuring it as described above, the drawbacks of the conventional example are solved. In other words, a heating heat exchanger 6 is installed in the exothermic gas supply path between the cooling unit 4 and the heating furnace 5 to heat the exothermic gas by exchanging heat between the combustion exhaust gas of the heating furnace 5 and the exothermic gas. Due to this arrangement, the exothermic gas can be heated with the combustion exhaust gas of the heating furnace 5 and supplied to the heating furnace 5, and the fuel gas used in the heating combustion device that heats the heating furnace 5 can be saved, thereby saving energy. By supplying combustion exhaust gas to the combustion furnace 1, the amount of fuel gas used as a raw material for forming exothermic gas can be reduced, and energy savings can also be achieved in this respect.
以下本発明を実施例により詳述する。 The present invention will be explained in detail below with reference to Examples.
発熱型ガス発生経路７には順に燃焼炉１、冷却
用熱交換器２と冷凍機３とよりなる冷却部４、加
熱用熱交換器６、加熱炉５を順に配置してある。
燃焼炉１は燃料ガスと空気とを混合して理論空気
比以下で燃焼させて変成ガスを形成するようにな
つている。例えばCO2＋CO＋H2Oのような変成
ガスが形成される。このガスが冷却部４の冷却用
熱交換器２に送られて水で冷却されて脱水され、
さらに冷凍機３に送られて冷却されて脱水される
ようになつている。加熱炉５では加熱燃焼装置に
て燃料ガスが燃焼させられて加熱炉５内が一定の
温度になるように加熱されている。加熱燃焼装置
で発生した燃焼排ガスは燃焼排ガス経路８を通つ
て上記燃焼炉１に供給されるようになつている。
また燃焼排ガス経路８は加熱用熱交換器６を通つ
て冷却部４で冷却されたガスと熱交換して加熱さ
れた発熱型ガスが形成される。この発熱型ガスが
加熱炉５に供給されて加熱炉５内を還元雰囲気の
ような雰囲気に保つようになつている。 In the exothermic gas generation path 7, a combustion furnace 1, a cooling section 4 comprising a cooling heat exchanger 2 and a refrigerator 3, a heating heat exchanger 6, and a heating furnace 5 are arranged in this order.
The combustion furnace 1 is configured to mix fuel gas and air and combust the mixture at a ratio below the stoichiometric air ratio to form a converted gas. For example, metamorphic gases such as CO 2 + CO + H 2 O are formed. This gas is sent to the cooling heat exchanger 2 of the cooling section 4, cooled with water, and dehydrated.
It is further sent to a refrigerator 3 to be cooled and dehydrated. In the heating furnace 5, fuel gas is combusted in a heating combustion device to heat the inside of the heating furnace 5 to a constant temperature. The combustion exhaust gas generated by the heating combustion device is supplied to the combustion furnace 1 through the combustion exhaust gas path 8.
Further, the combustion exhaust gas path 8 passes through the heating heat exchanger 6 and exchanges heat with the gas cooled by the cooling unit 4 to form heated exothermic gas. This exothermic gas is supplied to the heating furnace 5 to maintain the inside of the heating furnace 5 in a reducing atmosphere.
上記のように本発明発熱型ガス発生設備が構成
され、次のような動作をする。燃料ガスと空気と
が混合されて燃焼炉１で理論空気比以下で燃焼さ
せられると共に燃焼炉１で燃焼排ガスが混合され
て変成ガスが形成され、このガスが冷却部４の冷
却用熱交換器２と冷凍機３を通つて脱水され、水
分が除去されたガスが加熱用熱交換器６で燃焼排
ガスと熱交換して加熱された発熱型ガスが形成さ
れ、発熱型ガスが加熱炉５に供給されて加熱炉５
内の雰囲気を作る。なお燃焼炉１では燃料ガスと
空気とが理論空気比以下の空気比に設定される
が、加熱炉５の燃焼排ガス中の酸素量を考慮した
空気比に設定する必要がある。換言すれば燃焼用
空気の酸素量と燃焼排ガス中の酸素量を加えた量
がちようど雰囲気ガス組成になるために必要な酸
素量とする必要がある。この場合もし燃焼排ガス
中の残存酸素濃度が高くて燃焼炉１中の酸素濃度
を零に抑えることができない倍には冷却用熱交換
器２と冷凍機３との間に酸化触媒層９を設置して
その酸化触媒層９の直前にガスを供給することに
よつてガス中の酸素をなくすることが可能であ
る。 The exothermic gas generation equipment of the present invention is configured as described above and operates as follows. The fuel gas and air are mixed and burned in the combustion furnace 1 at a ratio below the stoichiometric air ratio, and the combustion exhaust gas is mixed in the combustion furnace 1 to form a converted gas, and this gas is sent to the cooling heat exchanger of the cooling section 4. 2 and a refrigerator 3, the gas from which moisture has been removed exchanges heat with the combustion exhaust gas in a heating heat exchanger 6 to form heated exothermic gas, and the exothermic gas is transferred to a heating furnace 5. Supplied heating furnace 5
Create an atmosphere inside. In the combustion furnace 1, the fuel gas and air are set at an air ratio that is less than or equal to the stoichiometric air ratio, but it is necessary to set the air ratio in consideration of the amount of oxygen in the combustion exhaust gas of the heating furnace 5. In other words, the sum of the amount of oxygen in the combustion air and the amount of oxygen in the combustion exhaust gas needs to be the amount of oxygen necessary to achieve a similar atmospheric gas composition. In this case, if the residual oxygen concentration in the combustion exhaust gas is too high to reduce the oxygen concentration in the combustion furnace 1 to zero, an oxidation catalyst layer 9 is installed between the cooling heat exchanger 2 and the refrigerator 3. By supplying gas immediately before the oxidation catalyst layer 9, oxygen in the gas can be eliminated.
［発明の効果］
本発明は叙述のように冷却部と加熱炉との間の
発熱型ガスの供給経路に加熱炉の燃焼排ガスと発
熱型ガスとの熱交換をして発熱型ガスを加熱する
加熱用熱交換器を配置してあるので、加熱炉の燃
焼排ガスの熱で加熱して加熱した発熱型ガスを形
成して加熱炉に供給できるものであつて、従来の
ように加熱炉内の温度を下げることがなく加熱炉
を加熱する加熱燃焼装置に使用する燃料ガスの使
用量を少なくできて省エネルギー化が図れるもの
であり、しかも燃焼排ガスを燃焼炉に供給してい
るので、燃焼排ガスを発熱型ガスの一部に使用で
きて燃焼炉に供給する燃料ガスの使用量も少なく
できてこの点でも省エネルギー化が図れるもので
ある。[Effects of the Invention] As described above, the present invention heats the exothermic gas by exchanging heat between the combustion exhaust gas of the heating furnace and the exothermic gas in the exothermic gas supply path between the cooling section and the heating furnace. Since a heating heat exchanger is installed, it is possible to heat the combustion exhaust gas of the heating furnace to form heated exothermic gas and supply it to the heating furnace. This device can reduce the amount of fuel gas used in the heating combustion equipment that heats the heating furnace without lowering the temperature, resulting in energy savings.Furthermore, since combustion exhaust gas is supplied to the combustion furnace, combustion exhaust gas can be reduced. Since it can be used as a part of the exothermic gas, the amount of fuel gas supplied to the combustion furnace can be reduced, and energy savings can also be achieved in this respect.
第１図は本発明の一実施例の概略系統図、第２
図は従来例の概略系統図であつて、１は燃焼炉、
４は冷却部、５は加熱炉、６は加熱用熱交換器で
ある。
FIG. 1 is a schematic system diagram of one embodiment of the present invention, and FIG.
The figure is a schematic system diagram of a conventional example, in which 1 is a combustion furnace;
4 is a cooling section, 5 is a heating furnace, and 6 is a heating heat exchanger.
Claims (1)
せる燃焼炉と、燃焼炉で発生したガスを冷却して
脱水することにより発熱型ガスを形成する冷却部
とより成る発熱型ガス発生設備において、冷却部
と加熱炉との間の発熱型ガスの供給経路に加熱炉
の燃焼排ガスと上記発熱型ガスとの熱交換をして
発熱型ガスを加熱する加熱用熱交換器を配置し、
上記燃焼排ガスを上記燃焼炉に供給するようにし
て成ることを特徴とする発熱型ガス発生設備。1. In exothermic gas generation equipment consisting of a combustion furnace that burns fuel gas and air at a ratio below the stoichiometric air ratio, and a cooling section that forms exothermic gas by cooling and dehydrating the gas generated in the combustion furnace, A heating heat exchanger for exchanging heat between the combustion exhaust gas of the heating furnace and the exothermic gas to heat the exothermic gas is disposed in the exothermic gas supply path between the cooling section and the heating furnace,
A heat-generating gas generating equipment characterized in that the combustion exhaust gas is supplied to the combustion furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26229284A JPS61141792A (en) | 1984-12-12 | 1984-12-12 | Exothermic gas production plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26229284A JPS61141792A (en) | 1984-12-12 | 1984-12-12 | Exothermic gas production plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61141792A JPS61141792A (en) | 1986-06-28 |
| JPH0428035B2 true JPH0428035B2 (en) | 1992-05-13 |
Family
ID=17373753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26229284A Granted JPS61141792A (en) | 1984-12-12 | 1984-12-12 | Exothermic gas production plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61141792A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282518B (en) * | 2016-09-21 | 2018-10-26 | 北京科技大学 | The device and method of freezing dehumidification are carried out with coal gas to heater for rolling steel |
-
1984
- 1984-12-12 JP JP26229284A patent/JPS61141792A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61141792A (en) | 1986-06-28 |
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