JPS6170313A - Radiation burner - Google Patents
Radiation burnerInfo
- Publication number
- JPS6170313A JPS6170313A JP19231184A JP19231184A JPS6170313A JP S6170313 A JPS6170313 A JP S6170313A JP 19231184 A JP19231184 A JP 19231184A JP 19231184 A JP19231184 A JP 19231184A JP S6170313 A JPS6170313 A JP S6170313A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- porous body
- fuel
- radiation
- burning section
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/16—Radiant burners using permeable blocks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は特に低発熱量ガスを効率良く燃焼できる輻射バ
ーナに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention particularly relates to a radiant burner that can efficiently burn low calorific value gas.
(従来の技術)
暖房用、乾燥用等の目的で使用される従来の輻射バーナ
はガラス繊維やセラミック繊維等の多孔体を燃焼部とし
、その外表面で燃焼を行わせるようにしたものが普通で
ある。(例えば、特開昭52−7037号公報、特開昭
56−16018号公報)
(発明が解決しようとする問題点)
ところが上記のような従来の表面燃焼式の輻射バーナは
、LPGのような高発熱量ガスを燃料とし燃焼温度を8
00℃以上として使用した場合には安定した燃焼を行わ
せることができるが、コークス炉ガス、転炉ガス、石炭
ガス化ガスのような発熱量が5000 kcal/Nイ
以下の低発熱量ガスを燃料として使用すると燃焼による
発熱量が小さいために、燃焼温度が800℃以上になら
ず多量のC01HCを発注するとともに燃焼が不安定と
なり、燃焼効率が著しく低下する欠点があった。(Prior art) Conventional radiant burners used for purposes such as heating and drying usually have a porous material such as glass fiber or ceramic fiber as the combustion part, and combustion occurs on the outer surface of the porous material. It is. (For example, JP-A-52-7037, JP-A-56-16018) (Problems to be Solved by the Invention) However, the conventional surface combustion type radiant burner as described above is Using high calorific value gas as fuel, the combustion temperature is 8.
Stable combustion can be achieved when used at temperatures above 00℃, but low calorific value gases such as coke oven gas, converter gas, and coal gasification gas with a calorific value of less than 5000 kcal/N When used as a fuel, since the calorific value generated by combustion is small, the combustion temperature does not reach 800° C. or higher, which requires a large amount of CO1HC to be ordered, resulting in unstable combustion and a significant reduction in combustion efficiency.
従って燃料ガスの発熱量の大小にかかわらず安定した燃
焼を行わせることができ、しかも効率良く赤外線を輻射
することができる輻射バーナが求められていた。Therefore, there has been a need for a radiant burner that can perform stable combustion regardless of the calorific value of fuel gas and can efficiently radiate infrared rays.
(問題点を解決するための手段)
本発明はこのような従来の問題点を解消するために完成
されたものであり、セラミック多孔体からなる燃焼部の
外表面上に、空隙部を介してセラミック多孔体からなる
輻射板を形成したことを特徴とするものである。(Means for Solving the Problems) The present invention has been completed in order to solve the problems of the conventional art, and it is possible to apply heat to the outer surface of the combustion section made of a porous ceramic material through the voids. It is characterized in that a radiation plate made of a ceramic porous body is formed.
(実施例)
次に本発明を図示の実施例について詳細に説明すれば、
(1)は燃料供給口(2)を備えたバーナ主体、(3)
は該バーナ主体(1)に取付けられた金網、パンチング
プレートのような保形材、(4)は該保形材(3)に支
持されたセラミック多孔体からなる燃焼部である。燃焼
部(4)を構成するセラミック多孔体はムライト、アル
ミナ、ジルコニア等の粒状体を焼結したものでもよいが
、圧損を小さくするとともに逆火防止のために内部熱伝
導率の低いセラミックファイバーを用いることが好まし
く、この場合には例えば1000℃以上の温度に耐える
5iOz−A l 20 :I系あるいはA l z
O:l系等のセラミックファイバーを用いることができ
る。燃焼部(4)の厚みは薄すぎると逆火の危険があり
、厚すぎると圧損が大きくなるため5〜25mm程度が
適当であり、また、その充填密度は燃料の種類や燃焼条
件によっても異なるが0.05〜0.35 g / c
ra、より好ましくは0.15〜0.30g/cwtと
するのがよい。燃料供給口(2)から供給された燃料ガ
スと空気の混合気は燃焼部(4)を通過したうえで燃焼
部(4)の外表面で燃焼して燃焼面(5)を形成するこ
ととなる。(6)は燃焼部(4)の外表面上に空隙部(
7)を介して形成されたセラミック多孔体からなる輻射
板である。輻射板(6)は外側に向って有効的に赤外線
を輻射するとともに燃焼部(4)に向って内側へ熱線が
輻射して燃焼面(5)の温度を上昇させる役割を有する
から輻射出車が大きいことが望まれ、しかも燃焼排ガス
を円滑に外部へ放出することができるものである必要が
あるので、燃焼部(4)と同様にセラミック粒状体ある
いはセラミックファイバーからなるものが好ましい。ま
た、輻射板(6)を構成す7セラミツク多孔体には未燃
燃料やCO等を除去するために触媒成分を含ませておい
てもよい。空隙部(7)は図示のように略均一な幅に形
成されるものであり、幅が小さすぎると燃焼面(5)が
ドリフトして輻射板(6)の表面で燃焼が起こることが
あり、逆にその幅が大きすぎると輻射板(6)から燃焼
面(5)への輻射が弱くなるので5〜25fi程度の幅
が適当である。なお、この空隙部(7)には0.01〜
0.05g/cnl程度の充填物が存在しても差し支え
ない。また、この空隙部(7)には支柱(8)のほかに
市販の点火源(9)が挿入されており、着火後に必要に
応じて抜き取ることができるものとする。本考案の輻射
バーナの全体形状は第1図のような平面型とするほか、
第2図のように円筒型としてもよくその他任意の形状と
することができる。(Example) Next, the present invention will be explained in detail with reference to the illustrated example.
(1) is a burner body equipped with a fuel supply port (2), (3)
is a shape retaining member such as a wire mesh or a punching plate attached to the burner main body (1), and (4) is a combustion section made of a ceramic porous body supported by the shape retainer (3). The ceramic porous body constituting the combustion section (4) may be made by sintering granular materials such as mullite, alumina, or zirconia, but ceramic fibers with low internal thermal conductivity are preferably used to reduce pressure loss and prevent backfire. It is preferable to use, in this case, for example, 5iOz-A120:I system or A1z that can withstand temperatures of 1000°C or higher.
Ceramic fibers such as O:l type can be used. If the thickness of the combustion part (4) is too thin, there is a risk of backfire, and if it is too thick, the pressure drop will increase, so a thickness of about 5 to 25 mm is appropriate, and its packing density also varies depending on the type of fuel and combustion conditions. is 0.05~0.35 g/c
ra, more preferably 0.15 to 0.30 g/cwt. The mixture of fuel gas and air supplied from the fuel supply port (2) passes through the combustion section (4) and burns on the outer surface of the combustion section (4) to form a combustion surface (5). Become. (6) is a void (
7) is a radiant plate made of a ceramic porous body formed through a ceramic porous body. The radiation plate (6) has the role of effectively radiating infrared rays outward and radiating heat rays inward toward the combustion section (4) to increase the temperature of the combustion surface (5). It is desired that the combustion chamber be large, and the combustion exhaust gas must be able to be smoothly discharged to the outside, so it is preferable that the combustion section be made of ceramic particles or ceramic fibers like the combustion section (4). Further, the 7-ceramic porous body constituting the radiant plate (6) may contain a catalyst component in order to remove unburned fuel, CO, and the like. The gap (7) is formed to have a substantially uniform width as shown in the figure; if the width is too small, the combustion surface (5) may drift and combustion may occur on the surface of the radiant plate (6). On the other hand, if the width is too large, the radiation from the radiating plate (6) to the combustion surface (5) will be weakened, so a width of about 5 to 25 fi is appropriate. In addition, this void part (7) has a content of 0.01 to
There is no problem even if there is a filler of about 0.05 g/cnl. Furthermore, in addition to the support column (8), a commercially available ignition source (9) is inserted into this cavity (7), and can be removed as necessary after ignition. The overall shape of the radiant burner of the present invention is a flat type as shown in Fig. 1.
It may have a cylindrical shape as shown in FIG. 2, or any other shape.
(作用)
このように構成されたものは、燃料供給口(2)から燃
料ガスと空気との予混合気を供給すれば、予混合気はセ
ラミック多孔体からなる燃焼部(4)を通過したうえで
その外表面で燃焼して燃焼面(5)を形成することは従
来の輻射バーナと同様であるが、本発明においては燃焼
部(4)の外表面上に空隙部(7)を介して輻射出車が
大きいセラミック多孔体からなる輻射板(6)が形成さ
れているので、燃焼面(5)により加熱された輻射板(
6)は外側に向って効率良く赤外線を輻射するとともに
内側に向っても輻射熱を発して燃焼部(4)の燃焼面(
5)を加熱し、その温度を高めることとなる。従って低
発熱量ガスを燃料として用いた場合にも燃焼面(5)の
温度を高温に維持して安定燃焼を行わせることができ、
しかも外部被加熱体に対し、輻射板(6)より加熱に最
適の波長の赤外線を効率良く輻射することができる。な
お、本発明の輻射バーナは低発熱量ガスのみならず、高
発熱量ガスを燃料として用いることもできることは言う
までもない。(Function) With this configuration, when a premixture of fuel gas and air is supplied from the fuel supply port (2), the premixture passes through the combustion part (4) made of a porous ceramic body. It is the same as a conventional radiation burner that burns on the outer surface of the burner to form the combustion surface (5), but in the present invention, the burner is burned on the outer surface of the combustion section (4) to form the combustion surface (5). Since the radiation plate (6) made of a large ceramic porous body is formed with a large radiation wheel, the radiation plate (6) heated by the combustion surface (5) is heated by the combustion surface (5).
6) efficiently radiates infrared rays toward the outside, and also emits radiant heat toward the inside to burn the combustion surface (4) of the combustion section (4).
5) to raise its temperature. Therefore, even when a low calorific value gas is used as fuel, the temperature of the combustion surface (5) can be maintained at a high temperature and stable combustion can be performed.
Moreover, infrared rays of the optimum wavelength for heating can be efficiently radiated from the radiation plate (6) to the external heated object. It goes without saying that the radiant burner of the present invention can use not only low calorific value gas but also high calorific value gas as fuel.
次に本発明の輻射バーナと、従来の表面燃焼バーナと、
市販のシュバンクバーナとを理論空気比1.0の転炉ガ
スを燃料として燃焼させ性能試験を行った結果を示す。Next, the radiant burner of the present invention and the conventional surface combustion burner,
The results of a performance test are shown in which a commercially available Schbank burner is burned using converter gas at a stoichiometric air ratio of 1.0 as fuel.
本発明の輻射バーナとしては第1図に示される1 5
Q龍X 150+uの平型のもので、燃焼部(4)の厚
さ1.5 (J!l充填密度0.25g/d、空隙部(
7)の幅0.5 am、輻射板(6)の厚さ0.5 a
m、充填密度0.25g/cnlのものを用いた。また
、従来の表面燃焼バーナとしてはS i Oz A
1 z O3系のセラミックファイバーからなる厚さ2
.5 cm充填密度0.25g/cdの燃焼部を有する
同形状のものを用いた。The radiation burner of the present invention is shown in FIG.
Q-Ryu
7) width 0.5 am, radiator plate (6) thickness 0.5 am
m, and a packing density of 0.25 g/cnl was used. In addition, as a conventional surface combustion burner, S i Oz A
1 z Thickness 2 made of O3 ceramic fiber
.. A 5 cm cylinder having the same shape and a combustion section with a packing density of 0.25 g/cd was used.
(発明の効果)
本発明は以上の説明からも明らかなように、燃料ガスの
発熱量が小さい場合にも安定した燃焼を行わせることが
でき、しかも表面温度を赤外線発生に好適な温度に維持
して効率良く赤外線輻射を行わせることができるもので
あるから、従来の輻射バーナの問題点を一掃したものと
して産業の発展に寄与するところは極めて大きいものが
ある。(Effects of the Invention) As is clear from the above description, the present invention can perform stable combustion even when the calorific value of the fuel gas is small, and maintain the surface temperature at a temperature suitable for infrared generation. Since it is capable of efficiently emitting infrared radiation, it can greatly contribute to the development of industry by eliminating the problems of conventional radiation burners.
第1図は本発明の実施例を示す一部切欠正面図、第2図
は他の実施例を示す一部切欠正面図である。
(3):保形材、(4):燃焼部、(6)二輻射板、(
7):空隙部。
ヰ二す!と一焼IFチ
第2図FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway front view showing another embodiment. (3): Shape retaining material, (4): Combustion part, (6) Two radiation plates, (
7): Void. Win two! Figure 2
Claims (1)
に、空隙部(7)を介してセラミック多孔体からなる輻
射板(6)を形成したことを特徴とする輻射バーナ。 2、燃焼部(4)がセラミック多孔体を支持する保形材
(3)を備えたものである特許請求の範囲第1項記載の
輻射バーナ。 3、セラミック多孔体がセラミックファイバーからなる
ものである特許請求の範囲第1項または第2項記載の輻
射バーナ。 4、空隙部(7)が5〜25mmの略均一な幅に形成さ
れたものである特許請求の範囲第1項または第2項また
は第3項記載の輻射バーナ。[Claims] 1. A radiation plate (6) made of a porous ceramic material is formed on the outer surface of the combustion part (4) made of a porous ceramic material with a gap (7) interposed therebetween. Radiant burner. 2. The radiation burner according to claim 1, wherein the combustion section (4) is provided with a shape retaining material (3) that supports the ceramic porous body. 3. The radiation burner according to claim 1 or 2, wherein the ceramic porous body is made of ceramic fibers. 4. The radiant burner according to claim 1, 2, or 3, wherein the cavity (7) is formed to have a substantially uniform width of 5 to 25 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19231184A JPS6170313A (en) | 1984-09-13 | 1984-09-13 | Radiation burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19231184A JPS6170313A (en) | 1984-09-13 | 1984-09-13 | Radiation burner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6170313A true JPS6170313A (en) | 1986-04-11 |
Family
ID=16289161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19231184A Pending JPS6170313A (en) | 1984-09-13 | 1984-09-13 | Radiation burner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6170313A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272217A (en) * | 1989-02-06 | 1990-11-07 | Carrier Corp | Infrared ray burner |
US5165887A (en) * | 1991-09-23 | 1992-11-24 | Solaronics | Burner element of woven ceramic fiber, and infrared heater for fluid immersion apparatus including the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4327273Y1 (en) * | 1966-01-17 | 1968-11-11 | ||
JPS60178208A (en) * | 1984-02-23 | 1985-09-12 | Osaka Gas Co Ltd | Far infrared ray radiation burner |
-
1984
- 1984-09-13 JP JP19231184A patent/JPS6170313A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4327273Y1 (en) * | 1966-01-17 | 1968-11-11 | ||
JPS60178208A (en) * | 1984-02-23 | 1985-09-12 | Osaka Gas Co Ltd | Far infrared ray radiation burner |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272217A (en) * | 1989-02-06 | 1990-11-07 | Carrier Corp | Infrared ray burner |
JPH0769045B2 (en) * | 1989-02-06 | 1995-07-26 | キャリア コーポレーション | Infrared burner manufacturing method |
US5165887A (en) * | 1991-09-23 | 1992-11-24 | Solaronics | Burner element of woven ceramic fiber, and infrared heater for fluid immersion apparatus including the same |
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