JP2838843B2 - Method and apparatus for heat exchange performed while suppressing generation of NOx and CO - Google Patents
Method and apparatus for heat exchange performed while suppressing generation of NOx and COInfo
- Publication number
- JP2838843B2 JP2838843B2 JP5306809A JP30680993A JP2838843B2 JP 2838843 B2 JP2838843 B2 JP 2838843B2 JP 5306809 A JP5306809 A JP 5306809A JP 30680993 A JP30680993 A JP 30680993A JP 2838843 B2 JP2838843 B2 JP 2838843B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- flame
- heat
- nox
- burner
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＮＯｘとＣＯの発生を
抑制しながら行う熱交換方法及び装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for exchanging heat while suppressing generation of NOx and CO.
【０００２】[0002]
【従来の技術】水管をバーナ近傍に位置させることで火
炎冷却により低ＮＯｘ化を図ることができることは知ら
れている。この場合、バーナに水管を近づければ、近づ
けるほどＣＯの発生量が多くなり、且つ水管の局所加熱
が起こるとの観点から、熱交換装置において、バーナと
水管との間に１００ｍｍ程度の特別の燃焼空間を構成し
ていた。2. Description of the Related Art It is known that NOx reduction can be achieved by flame cooling by positioning a water pipe near a burner. In this case, when the water pipe is brought closer to the burner, the amount of generated CO becomes larger as the water pipe is brought closer, and a local heating of the water pipe occurs. It constituted the combustion space.
【０００３】[0003]
【発明が解決しようとする課題】前記した熱交換装置に
おいて、窒素酸化物（ＮＯｘ）とＣＯの発生を抑制しつ
つ熱交換を実行し、且つ特別な燃焼空間等を必要としな
いコンパクトな熱交換装置の出現が熱望されている。SUMMARY OF THE INVENTION In the above-mentioned heat exchange apparatus, heat exchange is performed while suppressing generation of nitrogen oxides (NOx) and CO, and a compact heat exchange that does not require a special combustion space or the like. The emergence of the device is eager.
【０００４】[0004]
【課題を解決するための手段】火炎形成面である表面が
平坦な多孔質表面燃焼バーナを配置すると共に、この表
面燃焼バーナの火炎形成面に略接触させて抜熱体を配設
し、前記表面燃焼バーナによる火炎を該抜熱体に接触通
過させることで火炎温度を低下させてＮＯｘの発生を抑
制し、次いで、前記火炎温度を低下させることで生じた
ＣＯを、所定温度以上で所定時間滞留させることで完全
燃焼させ、その後熱交換部を通過させて熱交換を行うよ
うにしたことを特徴とするものである。Means for Solving the Problems The surface which is the flame forming surface is
Place a flat porous surface combustion burner and use this table
A heat removal body is installed in almost contact with the flame forming surface of the surface combustion burner
The flame from the surface combustion burner is passed through the heat removal body.
To lower the flame temperature and suppress the generation of NOx
Caused by reducing the flame temperature
Complete by retaining CO at a specified temperature or higher for a specified time
It burns and then passes through the heat exchange section for heat exchange.
This is a feature of the present invention.
【０００５】また、本発明は、火炎形成面である表面が
平坦な多孔質表面燃焼バーナを配置すると共に、この表
面燃焼バーナの火炎形成面に略接触させて冷却用流体を
流すようにした抜熱体を配設し、該抜熱体の下流側に、
火炎温度を低下させることで生じたＣＯを、所定温度以
上で所定時間滞留させて完全燃焼させる断熱空間を構成
し、該断熱空間の下流側に熱交換部を構成したことを特
徴とするものである。Further, according to the present invention, the flame forming surface
Place a flat porous surface combustion burner and use this table
The cooling fluid is brought into almost contact with the flame forming surface of the surface burner.
Arranging a heat removal body that is made to flow, on the downstream side of the heat removal body,
The CO generated by lowering the flame temperature is
A heat insulation space is configured to stay there for a predetermined time to perform complete combustion, and a heat exchange unit is formed downstream of the heat insulation space.
【０００６】[0006]
【作用】表面燃焼バーナにおける平坦な表面に形成され
る火炎を、抜熱体に接触通過させるので、抜熱体の局所
的過熱が生ずることはなく、極端な火炎温度の低下を抑
えることができる。従って、表面燃焼バーナと抜熱体と
の間に特別な燃焼空間がなくても、ＣＯ等の未燃分の発
生を抑えると共にＮＯｘの発生を抑制し、次いで、前記
火炎温度を低下させることで生じたＣＯ等の未燃分を、
所定温度以上で所定時間滞留させることで完全燃焼さ
せ、その後熱交換部を通過させて熱交換を行うことがで
きる。 [Function] Formed on a flat surface in a surface combustion burner
The flame that passes through the heat sink is passed through
Overheating does not occur and the extreme decrease in flame temperature is suppressed.
Can be obtained. Therefore, the surface combustion burner and the heat removal body
Even if there is no special combustion space between
Control the generation of NOx and the production of
Unburned components such as CO generated by lowering the flame temperature
Complete combustion by staying at a specified temperature or higher for a specified time
And then pass through the heat exchange section for heat exchange.
Wear.
【０００７】[0007]
【実施例】符号１は熱交換装置であって、２はその一端
部に設けた多孔質表面燃焼バーナである。多孔質表面燃
焼バーナ２はセラミックス製又は金属製のもので、その
平坦な表面に膜状に火炎を形成するバーナである。かか
る表面燃焼バーナ２に略接触させて抜熱体３を設置す
る。抜熱体３は、水管その他の流体が通過するものでよ
い。かかる抜熱体３の下流側には断熱空間４を構成す
る。この断熱空間４は、１０００°Ｃ以上で、１０００
分の１秒以上の滞留時間を有するように設定されてい
る。断熱空間４において完全燃焼した燃焼ガスは熱交換
部５に入り、熱交換に供される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a heat exchange device, and reference numeral 2 denotes a porous surface combustion burner provided at one end thereof. The porous surface combustion burner 2 is made of ceramics or metal.
This is a burner that forms a flame in a film on a flat surface. The heat removal body 3 is installed in substantially contact with the surface combustion burner 2. The heat removal body 3 may be a water pipe or another material through which a fluid passes. A heat insulating space 4 is formed downstream of the heat removal body 3. This heat insulating space 4 is not less than 1000 ° C.
It is set to have a residence time of one second or more. The combustion gas completely burned in the heat insulating space 4 enters the heat exchange unit 5 and is subjected to heat exchange.
【０００８】表面燃焼バーナ２における平坦な表面に形
成される火炎を、抜熱体３に接触通過させるので、抜熱
体３の局所的過熱が生ずることはなく、極端な火炎温度
の低下を抑えることができる。従って、表面燃焼バーナ
２と抜熱体３との間に特別な燃焼空間は不要であり、バ
ーナ本体をコンパクト化することができる。しかして、
図２および図３に示す通り、全発熱量の約１５％を熱吸
収するように設計された抜熱体３により抜熱されると、
火炎温度は約１２００°Ｃ程度以下に抑制される。その
結果、ＮＯｘ値は３０ｐｐｍ以下程度に抑制されると同
時に、前記火炎温度は、抜熱体３の許容吸熱量となり、
これにより抜熱体３の過熱は防止でき、寿命も長くな
る。また、抜熱体３とバーナ２が略接触状態にあるにも
かかわらず、抜熱量は、間隔を設けて設置した場合より
も低下しており、このことは、同時に、図４に示す通
り、ＣＯの発生も抑制されていることが理解できる。Ｎ
ＯｘとＣＯの発生量を抑制された火炎は、前記した構成
の断熱空間４内に入り、完全酸化され、その後、熱交換
部５において熱交換に供される。 The flat surface of the surface combustion burner 2 is shaped
Since the formed flame is passed through the heat removal body 3, the heat removal
No local overheating of the body 3 and extreme flame temperatures
Can be suppressed. Therefore, surface burning burners
No special combustion space is required between
Can be made compact. Then
As shown in FIGS. 2 and 3, when the heat is removed by the heat removal body 3 designed to absorb about 15% of the total heat generation,
The flame temperature is suppressed to about 1200 ° C. or less. As a result, the NOx value is suppressed to about 30 ppm or less, and at the same time, the flame temperature becomes the allowable heat absorption of the heat extraction body 3,
Thereby, overheating of the heat removal body 3 can be prevented, and the life is prolonged. Further, even though the heat removal body 3 and the burner 2 are substantially in contact with each other, the amount of heat removal is lower than that in the case where the heat removal body 3 is provided with an interval, and this is the same as FIG. It can be understood that the generation of CO is also suppressed. N
The flame in which the generation amounts of Ox and CO are suppressed enters the heat insulating space 4 having the above-described configuration, is completely oxidized, and is then subjected to heat exchange in the heat exchange unit 5.
【０００９】[0009]
【発明の効果】本発明は以上の通りであるので、ＮＯｘ
とＣＯの発生量を抑制しながら熱交換することができ、
且つ特別な燃焼空間等を必要としないコンパクトな熱交
換装置とすることができるという、優れた効果がある。The present invention is as described above, and therefore NOx
Heat exchange while suppressing the generation of CO and CO,
Compact heat exchange that does not require special combustion space
There is an excellent effect of being able to be a conversion device .
【図１】本発明熱交換装置の平面的説明図である。FIG. 1 is an explanatory plan view of a heat exchange device of the present invention.
【図２】抜熱体の位置表わす模式図と燃焼ガス温度との
関係を表わす説明図である。FIG. 2 is an explanatory diagram showing a relationship between a schematic diagram showing a position of a heat removal body and a combustion gas temperature.
【図３】抜熱量とＮＯｘ抑制値との関係を表わす説明図
である。FIG. 3 is an explanatory diagram showing a relationship between a heat removal amount and a NOx suppression value.
【図４】抜熱量とＣＯ抑制値との関係を表わす説明図で
ある。FIG. 4 is an explanatory diagram showing a relationship between a heat removal amount and a CO suppression value.
１ 熱交換装置 ２ 表面燃焼バーナ ３ 抜熱体 ４ 断熱空間 ５ 熱交換部 DESCRIPTION OF SYMBOLS 1 Heat exchange apparatus 2 Surface combustion burner 3 Heat extraction body 4 Insulated space 5 Heat exchange part
Claims (2)
表面燃焼バーナを配置すると共に、この表面燃焼バーナ
の火炎形成面に略接触させて抜熱体を配設し、前記表面
燃焼バーナによる火炎を該抜熱体に接触通過させること
で火炎温度を低下させてＮＯｘの発生を抑制し、次い
で、前記火炎温度を低下させることで生じたＣＯを、所
定温度以上で所定時間滞留させることで完全燃焼させ、
その後熱交換部を通過させて熱交換を行うようにしたこ
とを特徴とするＮＯｘとＣＯの発生を抑制しながら行う
熱交換方法。1. A porous material having a flat surface which is a flame forming surface.
A surface-burning burner is arranged and this surface-burning burner
A heat-dissipating body is disposed substantially in contact with the flame-forming surface of
Contacting and passing the flame from the combustion burner to the heat removal body
To lower the flame temperature to suppress the generation of NOx.
The CO generated by lowering the flame temperature is
Complete combustion by staying at a certain temperature or higher for a predetermined time,
A method of performing heat exchange while suppressing generation of NOx and CO, characterized by performing heat exchange after passing through a heat exchange section .
表面燃焼バーナを配置すると共に、この表面燃焼バーナ
の火炎形成面に略接触させて冷却用流体を流すようにし
た抜熱体を配設し、該抜熱体の下流側に、火炎温度を低
下させることで生じたＣＯを、所定温度以上で所定時間
滞留させて完全燃焼させる断熱空間を構成し、該断熱空
間の下流側に熱交換部を構成したことを特徴とするＮＯ
ｘとＣＯの発生を抑制しながら行う熱交換装置。2. A porous material having a flat surface as a flame forming surface.
A surface-burning burner is arranged and this surface-burning burner
The cooling fluid is allowed to flow almost in contact with the flame forming surface
A heat removal body, and lower the flame temperature downstream of the heat removal body.
The CO generated by lowering is kept at a predetermined temperature or higher for a predetermined time.
NO, characterized in that a heat insulating space for stagnation and complete combustion is formed, and a heat exchange section is formed downstream of the heat insulating space.
A heat exchange device that performs while suppressing the generation of x and CO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5306809A JP2838843B2 (en) | 1993-12-07 | 1993-12-07 | Method and apparatus for heat exchange performed while suppressing generation of NOx and CO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5306809A JP2838843B2 (en) | 1993-12-07 | 1993-12-07 | Method and apparatus for heat exchange performed while suppressing generation of NOx and CO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07158817A JPH07158817A (en) | 1995-06-20 |
| JP2838843B2 true JP2838843B2 (en) | 1998-12-16 |
Family
ID=17961529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5306809A Expired - Lifetime JP2838843B2 (en) | 1993-12-07 | 1993-12-07 | Method and apparatus for heat exchange performed while suppressing generation of NOx and CO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2838843B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4635636B2 (en) * | 2005-02-10 | 2011-02-23 | 三浦工業株式会社 | Boiler and low NOx combustion method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108916A (en) * | 1985-11-08 | 1987-05-20 | Matsushita Electric Ind Co Ltd | Burner unit |
| JP2673640B2 (en) * | 1991-09-04 | 1997-11-05 | リンナイ株式会社 | Hot water heater combustion control method |
-
1993
- 1993-12-07 JP JP5306809A patent/JP2838843B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07158817A (en) | 1995-06-20 |
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