JP2664984B2 - Flame retardant low calorific value gas combustion device - Google Patents
Flame retardant low calorific value gas combustion deviceInfo
- Publication number
- JP2664984B2 JP2664984B2 JP1045410A JP4541089A JP2664984B2 JP 2664984 B2 JP2664984 B2 JP 2664984B2 JP 1045410 A JP1045410 A JP 1045410A JP 4541089 A JP4541089 A JP 4541089A JP 2664984 B2 JP2664984 B2 JP 2664984B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- flame
- gas
- side wall
- mixture
- 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 - Fee Related
Links
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- Incineration Of Waste (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、低発熱量ガスのような難燃性ガスの燃焼装
置に関する。Description: TECHNICAL FIELD The present invention relates to a device for burning a flame-retardant gas such as a low calorific value gas.
第４図は従来の難燃性ガス燃焼装置の一例を示す縦断
面図、第５図は第４図のＶ−Ｖ断面図である。これらの
図において、燃焼筒（２）は側壁部（３）、底部
（４）、連接部（５）から成る。図示例では側壁部
（３）が３分割されている。そしてこの燃焼筒（２）
は、外筒（１）の内部にあり、燃焼炉（７）の前壁
（６）に接続している。外筒（１）は、燃料と空気との
混合体（８）を透過しない、鋼材・耐火材で作られてお
り、燃焼筒（２）は通気性のある多孔性固体で作られて
いる。FIG. 4 is a longitudinal sectional view showing an example of a conventional flame-retardant gas combustion apparatus, and FIG. 5 is a sectional view taken along line VV of FIG. In these figures, the combustion cylinder (2) is composed of a side wall (3), a bottom (4), and a connecting part (5). In the illustrated example, the side wall (3) is divided into three parts. And this combustion cylinder (2)
Is inside the outer cylinder (1) and is connected to the front wall (6) of the combustion furnace (7). The outer cylinder (1) is made of a steel material or a refractory material that does not permeate a mixture (8) of fuel and air, and the combustion cylinder (2) is made of a porous solid having air permeability.
燃料と空気との混合体（8a），（8b）は、燃焼筒
（２）の外側から内側へ供給され、燃焼し火炎（10）と
なる。混合体の一部（8c）は直接、燃焼炉（７）で燃焼
する。The mixture of fuel and air (8a), (8b) is supplied from the outside to the inside of the combustion tube (2) and burns to form a flame (10). Part of the mixture (8c) is burned directly in the combustion furnace (7).
前記従来の燃焼装置においては、燃焼筒（２）の側壁
部（３）を通過する混合体（８′）の流速が速くなる
と、側壁部（３）への保炎性能が劣化する。すなわち、
火炎（10）の根本が側壁部（３）へ密着せずリフト炎に
なって、いわゆる吹き消えが生じる、という問題点があ
った。In the conventional combustion apparatus, when the flow velocity of the mixture (8 ') passing through the side wall (3) of the combustion tube (2) increases, the flame holding performance on the side wall (3) deteriorates. That is,
There has been a problem that the root of the flame (10) does not adhere to the side wall (3) and becomes a lift flame, so that a so-called blowout occurs.
本発明は、前記従来の課題を解決するために、一端が
燃焼炉の前壁に接続された外筒と、同外筒内に収めら
れ、一部が多孔性固体製、他の一部が不透過性耐火物製
で、一端が閉塞して底壁を形成するとともに、他端が開
放されて上記燃焼炉の前壁に連接された燃焼筒とを具え
たことを特徴とする難燃性低発熱量ガスの燃焼装置を提
案するものである。In order to solve the conventional problem, the present invention has an outer cylinder connected at one end to a front wall of a combustion furnace, and is housed in the outer cylinder. And a combustion tube connected to the front wall of the combustion furnace, with one end closed and a bottom wall formed at the other end and open at the other end. It is intended to propose a combustion device for a low calorific value gas.
本発明においては、燃焼筒の側壁部または底壁部の一
部を不透過性にしたので、燃料ガス混合体が吹き出ず、
火炎が吹き飛んだり、不安定な振動燃焼をしたりせず、
安定する。In the present invention, a part of the side wall or the bottom wall of the combustion cylinder is made impermeable, so that the fuel gas mixture does not blow out,
The flame does not blow off and does not perform unstable vibration combustion,
Stabilize.
第１図は本発明の第１実施例を示す縦断面図、第２図
は第１図のII−II断面図である。これらの図において、
前記第４図および第５図によって説明した従来のものと
同様の部分については、同一の符号を付け、詳しい説明
を省略する。FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In these figures,
Parts similar to those of the related art described with reference to FIGS. 4 and 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.
本実施例では、燃焼筒（２）は側壁部（3a），（3
b），（3c），底部（４）、連接部（５）から成り、透
過性の多孔性固体と、不透過性の耐火物とで形成されて
いる。図示例では側壁部（3c）が不透過性で、他は透過
性の多孔性固体である。ただし、側壁部（3b）または底
部（４）が不透過性でも良いし、側壁部（3a），（3b）
が不透過性でも良い。外筒（１）は、内部に燃焼筒
（２）があり、燃焼炉（７）の前壁（６）に接続してい
る。In the present embodiment, the combustion cylinder (2) has side wall portions (3a), (3
b), (3c), a bottom part (4), and a connecting part (5), which are formed of a permeable porous solid and an impermeable refractory. In the illustrated example, the side wall (3c) is impermeable and the others are permeable porous solids. However, the side wall (3b) or the bottom (4) may be impermeable, or the side walls (3a), (3b)
May be impermeable. The outer cylinder (1) has a combustion cylinder (2) inside and is connected to a front wall (6) of a combustion furnace (7).
ガス燃料と空気との混合体、揮発性油燃料と空気との
混合体、または工場プロセスで発生する低カロリ（1500
kcal/Nm3以下を目安とする）の廃ガス等の難燃性の混合
体（８）は、外筒（１）を通り、混合体（8a），（8
b），（8c）に分岐される。この燃料混合体（8a），（8
b），（8c）は、10m/s以下の低流速で多孔性固体（3
a），（3b），（４）を通過し、燃焼筒（２）の内側で
自燃を開始する。側壁部（3c）は耐火材で、混合体（8
a）を通さないので、火炎（10）の根本は側壁部（3c）
から発生し、保炎が良く安定に燃焼する。連接部（５）
を通った混合体（8c）は燃焼炉（７）内で燃焼する。A mixture of gaseous fuel and air, a mixture of volatile oil fuel and air, or low calories (1500
The flame-retardant mixture (8), such as waste gas of about kcal / Nm 3 or less, passes through the outer cylinder (1) and passes through the mixture (8a), (8
The process branches to (b) and (8c). This fuel mixture (8a), (8
b) and (8c) are porous solids (3
After passing through a), (3b) and (4), self-combustion starts inside the combustion tube (2). The side wall (3c) is made of refractory material and the mixture (8
The base of the flame (10) is the side wall (3c) because it does not pass through a)
, And stably burns with good flame holding. Connecting part (5)
The mixture (8c) passed through is burned in the combustion furnace (7).
本実施例では、側壁部（3c）が不透過性なので、火炎
が保炎する。供給する燃料混合体（８）の流量が増え、
流速が増加しても、火炎が吹き飛んだり、不安定な振動
燃焼することがない。保炎性を更に良くするには、側壁
部（3b），（3c）を同時に不透過性にするなどして、不
透過な部分を調整すれば良い。In the present embodiment, since the side wall (3c) is impermeable, the flame is held. The flow rate of the supplied fuel mixture (8) increases,
Even if the flow velocity is increased, the flame does not blow off or unstable vibration combustion occurs. In order to further improve the flame holding property, the opaque portion may be adjusted by simultaneously making the side walls (3b) and (3c) impermeable.
上記実施例の作用効果を更に詳しく説明する。第６図
はガスバーナにおける燃料ガス流量、燃焼速度と火炎の
状況との関係を示す図である。ガスバーナでは、火炎が
上流に向かって伝播する速度（燃焼速度）と燃料ガスが
下流に向かって流れる流速とが釣合った時には安定燃焼
するが、ガス流速の方が速いと吹き消え（リフト炎）に
なり、反応に火炎伝播速度の方が速いと逆火を起こす。
したがって、燃料流量（ガス流速）を増加させる場合、
燃焼速度が一定のままだと吹き消えてしまうので、安定
燃焼させるためには、ガスの燃焼速度を強制的に増加さ
せる必要がある。The operation and effect of the above embodiment will be described in more detail. FIG. 6 is a diagram showing the relationship between the fuel gas flow rate, the burning speed and the state of the flame in the gas burner. In gas burners, stable combustion occurs when the speed at which the flame propagates upstream (burning speed) and the flow rate at which fuel gas flows downstream are balanced, but if the gas flow rate is faster, the gas blows out (lift flame). If the flame propagation speed is faster than the reaction, a flashback occurs.
Therefore, when increasing the fuel flow rate (gas flow rate),
If the combustion speed is kept constant, the gas will blow out. For stable combustion, it is necessary to forcibly increase the gas combustion speed.
ガスは、供給温度を高くしておくと、燃焼速度が増加
する。本発明が対象とする難燃性ガス燃焼装置では、ガ
ス予熱器は使用せず、高温の多孔性セラミック材を通過
させてガスを加熱するものである。ところが、多孔性セ
ラミックの表面は80〜90％は空間で残りが実体的なセラ
ミック材（固体）である。したがって、輻射熱を受けて
セラミック材が昇温していても、ガス流量が多ければガ
ス（常温〜100℃）は僅かしか昇温せず、燃焼速度は増
加しない（保炎性能が劣化する。）。If the supply temperature of the gas is kept high, the burning rate increases. In the flame-retardant gas combustion apparatus to which the present invention is applied, the gas is heated by passing through a high-temperature porous ceramic material without using a gas preheater. However, 80-90% of the surface of the porous ceramic is a space and the remainder is a substantial ceramic material (solid). Therefore, even if the ceramic material is heated by radiant heat, if the gas flow rate is large, the temperature of the gas (normal temperature to 100 ° C.) rises only slightly, and the combustion speed does not increase (flame holding performance is deteriorated). .
そこで、セラミック材を通過するガスを十分に加熱昇
温させるためには、セラミック材の量を増やし、輻射熱
を蓄熱しておけば良い。そのために多孔セラミックのメ
ッシュを細かくしたり、層を厚くすることも考えられる
が、前者ではバーナ表面積が増え大形化するし、後者で
は圧損が増えるので好ましくない。Therefore, in order to sufficiently heat and raise the temperature of the gas passing through the ceramic material, the amount of the ceramic material may be increased and the radiant heat may be stored. To this end, it is conceivable to make the porous ceramic mesh finer or thicker, but the former is not preferable because the burner surface area increases and the size increases, and the latter increases pressure loss.
本実施例では、混合体が吹き出さない所（不透過部）
を増したため、その不透過部（燃焼筒側壁）が輻射熱を
蓄熱することになり、その表面は火炎温度と同等の高温
度に保たれる。したがって、その表面の近傍を流れるガ
スの境界層は昇温し、ガスの燃焼速度が増加する。こう
して保炎性能が良くなり安定するのである。In this embodiment, a place where the mixture does not blow out (impermeable part)
As a result, the opaque portion (combustion cylinder side wall) stores radiant heat, and the surface thereof is maintained at a high temperature equivalent to the flame temperature. Accordingly, the temperature of the boundary layer of the gas flowing near the surface increases, and the burning speed of the gas increases. Thus, the flame holding performance is improved and stabilized.
次に第３図は、本発明の第２実施例を示す縦断面図で
ある。第３図でも、前記従来のもの、および第１実施例
における説明と同様の部分については同一の符号を付
け、詳しい説明を省略する。Next, FIG. 3 is a longitudinal sectional view showing a second embodiment of the present invention. In FIG. 3, the same reference numerals are given to the same parts as those in the conventional one and the description in the first embodiment, and the detailed description is omitted.
本実施例では、燃焼炉（７）の前壁（６）と接続し
て、末広がりの外筒（11a），（11b），（11c）があ
り、外筒の内側に燃焼筒（２）がある。燃焼筒（２）
は、末広がりの側壁部（13a），（13b），（13c），底
部（４）および連接部（５）から成る。図示例では、側
壁部（13a），（13b）および底部（４）が多孔性固体で
形成されて透過性があり、側壁部（13c）および連接部
（５）が耐火材等で形成され、不透過性である。In this embodiment, there are flared outer cylinders (11a), (11b) and (11c) connected to the front wall (6) of the combustion furnace (7), and the combustion cylinder (2) is located inside the outer cylinder. is there. Combustion cylinder (2)
Consists of flared side walls (13a), (13b) and (13c), a bottom (4) and a connecting part (5). In the illustrated example, the side walls (13a) and (13b) and the bottom (4) are formed of a porous solid and are permeable, and the side walls (13c) and the connecting portion (5) are formed of a refractory material or the like. Impermeable.
燃料ガス混合体（８）は、多孔性固体製の側壁部（13
a），（13b）および底部（４）を通過し、燃焼筒（２）
の内側で自燃を開始し、燃焼可能な温度に保たれる。側
壁部（13c）は不透過性なので、燃料ガス混合体（８）
が通過せず、火炎（10）の根元が側壁部（13c）から発
生し、保炎性の良い燃焼となる。The fuel gas mixture (8) is made of a porous solid side wall (13).
a), (13b) and the bottom (4), and the combustion cylinder (2)
Self-combustion starts inside the chamber and is maintained at a temperature at which combustion is possible. Since the side wall (13c) is impermeable, the fuel gas mixture (8)
Does not pass, and the base of the flame (10) is generated from the side wall (13c), resulting in combustion with good flame holding properties.
本発明においては、燃焼筒の一部が不透過性耐火物製
で、その良好な保炎性のため、燃料ガスの流量が増加し
ても、火炎の吹き飛びや振動燃焼のない安定燃焼ができ
る。In the present invention, a part of the combustion cylinder is made of an impervious refractory, and because of its good flame holding property, even if the flow rate of the fuel gas is increased, stable combustion without blow-out of the flame and vibration combustion can be performed. .
第１図は本発明の第１実施例を示す縦断面図、第２図は
第１図のII−II断面図である。第３図は本発明の第２実
施例を示す縦断面図である。第４図は従来の難燃性ガス
燃焼装置の一例を示す縦断面図、第５図は第４図のＶ−
Ｖ断面図である。第６図はガスバーナにおける燃焼ガス
流量、燃焼速度と火炎の状況との関係を示す図である。 （１）……外筒，（２）……燃焼筒， （３），（3a），（3b），（3c）……側壁部， （４）……底部，（５）……連接部， （６）……燃焼炉前壁，（７）……燃焼炉， （８），（8a），（8b），（8c）……（燃料ガス）混合
体， （10）……火炎， （11a），（11b），（11c）……外筒， （13a），（13b），（13c）……側壁部。FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a longitudinal sectional view showing a second embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing an example of a conventional flame-retardant gas combustion device, and FIG.
It is V sectional drawing. FIG. 6 is a diagram showing the relationship between the combustion gas flow rate, the combustion speed and the state of the flame in the gas burner. (1) ... outer cylinder, (2) ... combustion cylinder, (3), (3a), (3b), (3c) ... side wall, (4) ... bottom, (5) ... connecting part , (6)… front wall of combustion furnace, (7)… combustion furnace, (8), (8a), (8b), (8c)… (fuel gas) mixture, (10)… flame, (11a), (11b), (11c) ... outer cylinder, (13a), (13b), (13c) ... side wall.
Claims (1)
同外筒内に収められ、一部が多孔性固体製、他の一部が
不透過性耐火物製で、一端が閉塞して底壁を形成すると
ともに、他端が開放されて上記燃焼炉の前壁に連接され
た燃焼筒とを具えたことを特徴とする難燃性低発熱量ガ
スの燃焼装置。An outer cylinder having one end connected to a front wall of the combustion furnace;
The combustion furnace is housed in the outer cylinder, a part of which is made of a porous solid, and another part is made of an impermeable refractory, one end of which is closed to form a bottom wall, and the other end of which is opened. And a combustion tube connected to the front wall of the combustion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1045410A JP2664984B2 (en) | 1989-02-28 | 1989-02-28 | Flame retardant low calorific value gas combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1045410A JP2664984B2 (en) | 1989-02-28 | 1989-02-28 | Flame retardant low calorific value gas combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02225905A JPH02225905A (en) | 1990-09-07 |
| JP2664984B2 true JP2664984B2 (en) | 1997-10-22 |
Family
ID=12718486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1045410A Expired - Fee Related JP2664984B2 (en) | 1989-02-28 | 1989-02-28 | Flame retardant low calorific value gas combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2664984B2 (en) |
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| US8095240B2 (en) | 2004-11-18 | 2012-01-10 | Applied Materials, Inc. | Methods for starting and operating a thermal abatement system |
| US7682574B2 (en) | 2004-11-18 | 2010-03-23 | Applied Materials, Inc. | Safety, monitoring and control features for thermal abatement reactor |
| BRPI1008485B1 (en) | 2009-02-26 | 2020-06-02 | Palmer Labs, Llc | APPARATUS AND METHOD FOR COMBUSTING A FUEL IN HIGH PRESSURE AND HIGH TEMPERATURE AND ASSOCIATED SYSTEM AND DEVICE. |
| US10018115B2 (en) | 2009-02-26 | 2018-07-10 | 8 Rivers Capital, Llc | System and method for high efficiency power generation using a carbon dioxide circulating working fluid |
| US8596075B2 (en) * | 2009-02-26 | 2013-12-03 | Palmer Labs, Llc | System and method for high efficiency power generation using a carbon dioxide circulating working fluid |
| MX345755B (en) | 2011-11-02 | 2017-02-15 | 8 Rivers Capital Llc | Power generating system and corresponding method. |
| JP6250332B2 (en) | 2013-08-27 | 2017-12-20 | ８ リバーズ キャピタル，エルエルシー | Gas turbine equipment |
| TWI657195B (en) | 2014-07-08 | 2019-04-21 | 美商八河資本有限公司 | A method for heating a recirculating gas stream,a method of generating power and a power generating system |
| US11231224B2 (en) | 2014-09-09 | 2022-01-25 | 8 Rivers Capital, Llc | Production of low pressure liquid carbon dioxide from a power production system and method |
| JP6629843B2 (en) | 2014-09-09 | 2020-01-15 | ８ リバーズ キャピタル，エルエルシー | Production of low pressure liquid carbon dioxide from power generation systems and methods |
| MA40950A (en) | 2014-11-12 | 2017-09-19 | 8 Rivers Capital Llc | SUITABLE CONTROL SYSTEMS AND PROCEDURES FOR USE WITH POWER GENERATION SYSTEMS AND PROCESSES |
| US10961920B2 (en) | 2018-10-02 | 2021-03-30 | 8 Rivers Capital, Llc | Control systems and methods suitable for use with power production systems and methods |
| MY188544A (en) | 2015-06-15 | 2021-12-21 | 8 Rivers Capital Llc | System and method for startup of a power production plant |
| US10634048B2 (en) | 2016-02-18 | 2020-04-28 | 8 Rivers Capital, Llc | System and method for power production including methanation |
| PL3420209T3 (en) | 2016-02-26 | 2024-02-05 | 8 Rivers Capital, Llc | Systems and methods for controlling a power plant |
| JP7366005B2 (en) | 2017-08-28 | 2023-10-20 | ８ リバーズ キャピタル，エルエルシー | Low-grade thermal optimization of recuperative supercritical CO2 power cycle |
| ES2970038T3 (en) | 2018-03-02 | 2024-05-24 | 8 Rivers Capital Llc | Systems and methods for energy production using a carbon dioxide working fluid |
| WO2021079324A1 (en) | 2019-10-22 | 2021-04-29 | 8 Rivers Capital, Llc | Control schemes for thermal management of power production systems and methods |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950012A (en) * | 1982-09-09 | 1984-03-22 | Motonori Oda | Manufacture of ash for activated carbon using waste pine enchroached by pine weevil |
| JPS6349616A (en) * | 1986-08-19 | 1988-03-02 | Toyo Mach Kk | Hot air device by exhaust gas combustion |
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1989
- 1989-02-28 JP JP1045410A patent/JP2664984B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02225905A (en) | 1990-09-07 |
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