JPS62112909A - Catalyst combustion device - Google Patents
Catalyst combustion deviceInfo
- Publication number
- JPS62112909A JPS62112909A JP25216185A JP25216185A JPS62112909A JP S62112909 A JPS62112909 A JP S62112909A JP 25216185 A JP25216185 A JP 25216185A JP 25216185 A JP25216185 A JP 25216185A JP S62112909 A JPS62112909 A JP S62112909A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- catalyst
- combustion catalyst
- holes
- heat
- 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.)
- Pending
Links
Landscapes
- Gas Burners (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分骨
本発明は、都市ガス、天然ガス、LPガス等の気体燃料
を燃焼用触媒体上に拡散させ、燃焼用空気によって前記
の気体燃料を触媒酸化反応させて、゛生成した反応熱を
利用する触媒燃焼装置に関する。Detailed Description of the Invention Industrial Application The present invention diffuses gaseous fuel such as city gas, natural gas, LP gas, etc. onto a combustion catalyst, and catalytically oxidizes the gaseous fuel with combustion air. This invention relates to a catalytic combustion device that utilizes the reaction heat generated by a reaction.
従来の技術
従来この種の触媒燃焼装置は、第3図に示すよ2へ−7
うに、バーナケース1aの底部にガス室2aを構成し、
その下流側にラス鋼等からなる仕切板3a。BACKGROUND OF THE INVENTION Conventionally, this type of catalytic combustion apparatus has a gas chamber 2a at the bottom of a burner case 1a, as shown in FIG.
A partition plate 3a made of lath steel or the like is provided on the downstream side thereof.
保温材4 a 、多孔質耐熱性セラミック繊維集合体3
″゛・′4・門等0酸化触媒を担持し“燃焼用触媒体5
aが積層されている。Heat insulating material 4a, porous heat-resistant ceramic fiber aggregate 3
``゛・'4・gate etc. 0 oxidation catalyst supported ``combustion catalyst body 5
a are stacked.
発明が解決しようとする問題点
しかしながら上記のような構成では、燃焼用触媒体5a
が比較的嵩比重の高い耐熱性繊維セラミック集合体から
なり、多数の透孔を有していないため、燃焼時の燃焼空
気の供給が耐熱性繊維間を拡散して燃焼用触媒体5a内
部に十分供給されず、空気不足となって完全なる触媒酸
化反応が成し得ず、未燃焼成ガスの発生、すなわちスリ
ップ率の増大や、−酸化炭素等の有害ガスの発生量が多
くなる欠点を有していた。Problems to be Solved by the Invention However, in the above configuration, the combustion catalyst body 5a
is made of a heat-resistant fiber ceramic aggregate with a relatively high bulk specific gravity and does not have many through holes, so that the combustion air supplied during combustion diffuses between the heat-resistant fibers and enters the inside of the combustion catalyst 5a. If sufficient air is not supplied, a complete catalytic oxidation reaction cannot be achieved due to lack of air, resulting in the generation of unburned gas, which increases the slip ratio, and increases the amount of harmful gases such as -carbon oxide. had.
本発明はかかる従来の問題点を解消するもので1、触媒
燃焼装置あ燃焼−における未燃焼ガスや一酸化炭素等の
不完全燃焼ガスの発生を抑制し、きれいな燃焼化を図る
ことを目的とする。The present invention solves these conventional problems, and aims to achieve clean combustion by suppressing the generation of unburned gas and incomplete combustion gas such as carbon monoxide in a catalytic combustion device. do.
問題点を解決するための手段
3ベーン
上記問題点を解決するために本発明の触媒燃焼装置は、
バーナケース内で多数の透孔を有した燃−焼用触媒体、
保温材、仕切板を順次積層し、燃焼用触媒体内で燃焼空
気と酸化反応させ燃焼を行う構成としたものである。Means for Solving the Problems Three Vanes In order to solve the above problems, the catalytic combustion apparatus of the present invention includes:
A combustion catalyst body with a large number of through holes inside the burner case,
The structure is such that heat insulating material and partition plates are sequentially laminated, and combustion occurs through an oxidation reaction with combustion air within the combustion catalyst body.
作 用
本発明は上記した構成によって、燃焼用触媒体上に多数
設けた透孔から、燃焼用触媒体内に十分なる拡散空気を
得て、触媒酸化反応を促進し、未燃焼ガスや一酸化炭素
の発生を抑制してクリーン燃焼化が図れるものである。Function: With the above-described configuration, the present invention obtains sufficient diffused air into the combustion catalyst body through the numerous through holes provided on the combustion catalyst body, promotes the catalytic oxidation reaction, and removes unburned gas and carbon monoxide. It is possible to achieve clean combustion by suppressing the generation of .
実施例
以下、本発明の実施例を添付図面にもとづいて説明する
。Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.
第1図、第2図において、耐熱性金属からなるバーナケ
ース1の底部には、ガス室2と燃料ガス流入口3があり
、ガス室2の下流側には金属製打゛ 抜板より構成し
た仕切板4、耐熱性繊維セラミ・ツク集合体よりなる保
温材5、ニクロムヒータ線から構成したヒータ体6、多
孔質耐熱性繊維セラミック集合体にRh、 Pd、 P
t等の酸化触媒を担持し、全面に多数の透孔7を有する
燃焼用触媒体8、前記燃焼…触媒体8のたわみ、位置ず
れを防止するための保護ネット9が順次積層され設置さ
れている。一方、燃焼用触媒体8の全面に設けた多数の
透孔7は、触媒燃焼に必要な燃焼用空気を燃焼用触媒体
8内に十分に供給し、しかも、未燃焼ガスが漏出しない
孔径、例えば2〜10tnWLの孔径に設定しである。In Figures 1 and 2, the bottom of a burner case 1 made of heat-resistant metal has a gas chamber 2 and a fuel gas inlet 3, and the downstream side of the gas chamber 2 is made of a stamped metal plate. A heat insulating material 5 made of a heat-resistant fiber-ceramic aggregate, a heater body 6 made of nichrome heater wire, and a porous heat-resistant fiber-ceramic aggregate containing Rh, Pd, and P.
A combustion catalyst body 8 supporting an oxidation catalyst such as T and having a large number of through holes 7 on the entire surface, and a protective net 9 for preventing deflection and displacement of the combustion catalyst body 8 are sequentially laminated and installed. There is. On the other hand, the large number of through holes 7 provided on the entire surface of the combustion catalyst body 8 supply a sufficient amount of combustion air necessary for catalytic combustion into the combustion catalyst body 8, and have a hole diameter that prevents unburned gas from leaking. For example, the pore diameter is set to 2 to 10 tnWL.
また燃焼用触媒体日内あるいは燃焼用触媒体8とヒータ
体6との間には、燃焼用触媒体8の燃焼温度を検知す、
る熱電対10がバーナケース1を貫通して設置されてい
る。 □上記構成において、ヒータ体6に通電すると
、ヒータ体6からの発熱が保温材5及び燃焼用触媒体8
の双方に伝熱され、燃焼用触媒体8の温度が活性化温度
、すなわち着火可能な温度に到達したことを熱電対10
が検知すると、電磁弁(図示せず)に通電され、燃料ガ
ス流入1」3よりガス室2内に燃料ガスが一定流量で供
給される。燃料ガスはある程度昇温しでいる保温材5内
を拡散するこ5 ページ
とにより、自らも昇温しで燃焼用触媒体8の温度をあま
り低下させることなく燃焼用触媒体8内に拡散する。こ
の際、燃焼用触媒体8内では、外気から対流して来た燃
焼用空気が多数の透孔7内に導かれ、耐熱性セラミック
繊維間隙より燃焼用触。In addition, between the combustion catalyst body 8 and the heater body 6, there is a device for detecting the combustion temperature of the combustion catalyst body 8.
A thermocouple 10 is installed passing through the burner case 1. □In the above configuration, when the heater body 6 is energized, the heat generated from the heater body 6 is transferred to the heat insulating material 5 and the combustion catalyst body 8.
The thermocouple 10 indicates that the temperature of the combustion catalyst 8 has reached the activation temperature, that is, the temperature at which ignition is possible.
When detected, a solenoid valve (not shown) is energized, and fuel gas is supplied into the gas chamber 2 from the fuel gas inflow 1'' 3 at a constant flow rate. The fuel gas diffuses inside the heat insulating material 5 whose temperature has risen to a certain extent, and as a result, the fuel gas also rises in temperature and diffuses into the combustion catalyst body 8 without significantly lowering the temperature of the combustion catalyst body 8. . At this time, within the combustion catalyst body 8, combustion air convected from the outside air is guided into a large number of through holes 7, and is passed through the gaps between the heat-resistant ceramic fibers.
媒体8内に十分に拡散し、保温材5内を拡散して来た燃
料ガスと触媒酸化反応を行い、二酸化炭素と水蒸気とな
って触媒燃焼が開始される。さらにこの様な触媒反応が
燃焼用触媒体8全体に”及び触媒反応は安定化する。こ
の時点で熱電対10は触媒燃焼の安定温度を温度上昇に
よって検知し、同時にヒータ体6への通電も停止きれ、
完全な賜燃焼による触媒燃焼状態が形成されて、燃焼用
触媒体8の温度が450〜600°C程度を保持し定常
燃焼が持続される。It sufficiently diffuses into the medium 8 and undergoes a catalytic oxidation reaction with the fuel gas that has diffused within the heat insulating material 5, turning into carbon dioxide and water vapor, and catalytic combustion begins. Furthermore, such a catalytic reaction spreads over the entire combustion catalyst body 8 and the catalytic reaction becomes stable. At this point, the thermocouple 10 detects the stable temperature of catalytic combustion by the temperature rise, and at the same time, the heater body 6 is also energized. Stop,
A catalytic combustion state is formed due to complete combustion, and the temperature of the combustion catalyst body 8 is maintained at about 450 to 600°C, and steady combustion is maintained.
一方、触媒燃焼装置では燃焼箱触媒体8の熱劣□
化と防止するため、燃料ガスと空気との予混合は行えず
全2次空気燃焼を行う必要性が有り、触媒燃焼体8内へ
の燃焼用空気の十分なる拡散を得る□ことが、完全燃焼
を行わしめる前提となる。On the other hand, in a catalytic combustion device, in order to prevent thermal deterioration of the combustion box catalyst body 8, premixing of fuel gas and air cannot be performed and it is necessary to perform all secondary air combustion. Obtaining sufficient diffusion of the combustion air □ is a prerequisite for complete combustion.
6ヘー/゛
本実施例では、燃焼用触媒体8の全面に渡って多数の透
孔7を設けているので、燃焼用触媒体8表面に沿って対
流してきた燃焼用空気が、透孔7を通して燃焼用触媒体
8の深部へと導かれ、燃焼用触媒体8の耐熱性、セラミ
ック繊維間を拡散して、燃焼用触媒体8内部に十分に拡
散して供給される。6 h/゛In this embodiment, a large number of through holes 7 are provided over the entire surface of the combustion catalyst body 8, so that the combustion air that has convected along the surface of the combustion catalyst body 8 flows through the through holes 7. It is guided deep into the combustion catalyst body 8 through the combustion catalyst body 8, diffuses between the heat-resistant ceramic fibers of the combustion catalyst body 8, and is sufficiently diffused and supplied into the combustion catalyst body 8.
この結果、保温材5を通じて拡散してきた燃料ガスと触
媒酸化反応が促進され未燃焼ガス発生によるスリップ率
の増大や、−酸化炭素等の有害ガスの発生を大巾に減少
したクリーン燃焼が成し得るものである。As a result, the catalytic oxidation reaction with the fuel gas diffused through the heat insulating material 5 is promoted, resulting in an increase in the slip ratio due to the generation of unburned gas and a clean combustion in which the generation of harmful gases such as -carbon oxide is greatly reduced. It's something you get.
発明の効果
以上のように本発明の触媒燃焼装置によれば次の効果が
ある。、すなわち、燃焼用触媒体の全面に渡って多数の
透孔を設けることで、燃焼用触媒体内への燃焼用空気の
拡散を促進し、未燃焼ガスや、−酸化炭素の発生を抑制
したクリーン燃焼が可能となる。Effects of the Invention As described above, the catalytic combustion apparatus of the present invention has the following effects. In other words, by providing a large number of holes throughout the combustion catalyst body, it is possible to promote the diffusion of combustion air into the combustion catalyst body, thereby suppressing the generation of unburned gas and carbon oxide. Combustion becomes possible.
第1図は本発明一実施例における触媒燃焼装置7 ペー
ジ
の縦断面図、第2図は第1図の要部切欠平面図、第3図
は従来の触媒燃焼装置の縦断面図である。
1・・・・バーナケース、5・・・・保温材、7・・・
・・・透孔、8・・・・燃焼用触媒体。FIG. 1 is a vertical cross-sectional view of page 7 of a catalytic combustion device according to an embodiment of the present invention, FIG. 2 is a cutaway plan view of the main part of FIG. 1, and FIG. 3 is a vertical cross-sectional view of a conventional catalytic combustion device. 1...Burner case, 5...Heat insulation material, 7...
...Through hole, 8...Catalyst for combustion.
Claims (2)
ると共に多数の透孔を有した燃焼用触媒体と、この上流
側に保温材と積層してバーナケース内に収納してなる触
媒燃焼装置。(1) A catalytic combustion device consisting of a combustion catalyst body that supports an oxidation catalyst on porous heat-resistant ceramic fibers and has a large number of through holes, and a heat insulating material layered on the upstream side of the combustion catalyst body and housed in a burner case. .
属の内1種以上、あるいはFe、Co、Ni等の遷移金
属の酸化物の内1種類以上を混入した特許請求の範囲第
1項記載の触媒燃焼装置。(2) As an oxidation catalyst, one or more of platinum group metals such as Pt, Pd, and Rh, or one or more of transition metal oxides such as Fe, Co, and Ni are mixed. Catalytic combustion device as described in section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25216185A JPS62112909A (en) | 1985-11-11 | 1985-11-11 | Catalyst combustion device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25216185A JPS62112909A (en) | 1985-11-11 | 1985-11-11 | Catalyst combustion device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62112909A true JPS62112909A (en) | 1987-05-23 |
Family
ID=17233333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25216185A Pending JPS62112909A (en) | 1985-11-11 | 1985-11-11 | Catalyst combustion device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62112909A (en) |
-
1985
- 1985-11-11 JP JP25216185A patent/JPS62112909A/en active Pending
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