JPS59109712A - Poor calorie gas burner - Google Patents
Poor calorie gas burnerInfo
- Publication number
- JPS59109712A JPS59109712A JP57218423A JP21842382A JPS59109712A JP S59109712 A JPS59109712 A JP S59109712A JP 57218423 A JP57218423 A JP 57218423A JP 21842382 A JP21842382 A JP 21842382A JP S59109712 A JPS59109712 A JP S59109712A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- combustion
- gas
- tube
- low
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
- Incineration Of Waste (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は低カロリーガス燃焼装置に係り、特に助燃料を
必要とすることなく、かつ排ガス中の窒素酸化物（以下
ＮＯ工と称する）の増加をともなうことなく低カロリー
オフガスの燃焼を行うことができる廃熱ボイラ装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low-calorie gas combustion device, which is capable of producing low-calorie gas without particularly requiring auxiliary fuel and without increasing nitrogen oxides (hereinafter referred to as NO gas) in exhaust gas. The present invention relates to a waste heat boiler device that can burn off gas.
各種産業プラント、特にアクリルニトリル製造プラント
等の化学プラントから排出されるオフガス中には一般に
有害成分が含まれており、これをそのまま大気放出する
ことは環境保全上好ましくない。有害成分の除去または
無害化に関して従来から種々の方法が試みられているが
、有害成分が可燃性のものである場合には、焼却により
無害化することが最も便利である。その際、十分な発熱
量を有するオフガスについてはこれを燃料源として再利
用することができるが、大部分のオフガスは自燃性のな
い低カロリーのものであるだめ、燃焼に際して助燃料の
使用を必要とする。Off-gas discharged from various industrial plants, especially chemical plants such as acrylonitrile manufacturing plants, generally contains harmful components, and it is not desirable from the viewpoint of environmental conservation to release this directly into the atmosphere. Various methods have been tried in the past to remove or render harmless harmful components, but when the harmful components are flammable, it is most convenient to render them harmless by incineration. In this case, off-gas with sufficient calorific value can be reused as a fuel source, but most off-gas is low-calorie and non-self-combustible, so it is necessary to use auxiliary fuel during combustion. shall be.
従来の低カロリーオフガス（以下、単にオフガスと称す
ることがある）の燃焼装置は一般に、第１図に示すよう
に、オフガス供給主配管７から多段（図では４段）に分
岐したオフガス供給口（ポート）６および助燃料配管８
に連通する助燃バーナ９を備えた燃焼筒１と、該燃焼筒
１の上部から排ガスダクト２を経て送られる高温燃焼排
ガスを案内するとともに、その顕熱を回収するだめのス
チーム過熱−ｔＥＩ３０を設けたスチーム過熱器３と、
該スチーム過熱管３０へ発生飽和スチームを供給する廃
熱ボイラ４とから主に構成されている。なお、図中、１
２は上ドラム、１３は下ドラム、１１は上ドラムＩ２と
下ドラム１３間に連設されたフィンチューブ、１４は廃
熱ボイラ４で発生するスチームをスチーム過熱−Ｗ２Ｏ
へ供給するだめのスチーム配管、１５は過熱スチーム取
出配管、５は廃熱ポ、イラ４の後流に設けられた排ガス
ダクトである。Conventional low-calorie off-gas (hereinafter sometimes simply referred to as off-gas) combustion devices generally have an off-gas supply port (4 stages in the figure) branched from the main off-gas supply pipe 7, as shown in FIG. port) 6 and auxiliary fuel piping 8
A combustion tube 1 equipped with an auxiliary combustion burner 9 communicating with the combustion tube 1, and a steam superheater tEI 30 for guiding the high temperature combustion exhaust gas sent from the upper part of the combustion tube 1 through the exhaust gas duct 2 and recovering the sensible heat thereof are provided. steam superheater 3,
It mainly consists of a waste heat boiler 4 that supplies generated saturated steam to the steam superheating tube 30. In addition, in the figure, 1
2 is an upper drum, 13 is a lower drum, 11 is a fin tube connected between the upper drum I2 and the lower drum 13, and 14 is a steam superheater for steam generated in the waste heat boiler 4 - W2O
15 is a superheated steam extraction pipe; 5 is a waste heat port; and 5 is an exhaust gas duct provided downstream of the blower 4.
このような構成において、オフガス給供口６から燃焼時
１の燃焼室１０へ噴入されたオフガスは、助燃バーナ９
で発生する燃焼熱により燃焼可能温度まで加熱されて燃
焼し、該燃焼後の高温排ガスは排ガスダクト２を経てス
チーム過熱器３および廃熱ボイラ４に送られて熱回収さ
れ、次いで排ガスダクト５を経て大気中へ放出される。In such a configuration, the off-gas injected from the off-gas supply port 6 into the combustion chamber 10 during combustion 1 is transferred to the auxiliary burner 9.
The combustion heat generated in the combustion chamber heats up to a combustible temperature and combusts, and the high-temperature exhaust gas after combustion is sent to a steam superheater 3 and a waste heat boiler 4 through an exhaust gas duct 2 for heat recovery, and then passed through an exhaust gas duct 5. It is then released into the atmosphere.
一方、廃熱ボイラ４で発生した飽和スチームは、スチー
人配α１４を経てスチーム過熱管３０へ送られ、過熱後
退熱スチーム過熱配σ１５を経て取出される。On the other hand, the saturated steam generated in the waste heat boiler 4 is sent to the steam superheating tube 30 via the steam pipe α14, and is taken out via the superheated receding heat steam superheating pipe σ15.
このように、従来の燃焼装置による場合でも低カロリー
オフガスの燃焼を行うことができ、まだ、オフガス供給
口を多段に設けたことにより、ＮＯ工抑制にとって有利
な比較的低温かつ均一な燃焼を行うことができるが、未
だ下記の問題があることが分った。その１つは、助燃料
の使用を要するので経済的に好ましくないことである。In this way, it is possible to burn low-calorie off-gas even when using a conventional combustion device, and by providing off-gas supply ports in multiple stages, it is possible to achieve relatively low-temperature and uniform combustion, which is advantageous for suppressing NO emissions. However, the following problems still exist. One is that it requires the use of auxiliary fuel, which is economically undesirable.
まだ第２は、燃焼温度の低温化はせいぜい８５０〜９０
０ ℃が限界であり、そのため排ガス中のＮＯ工濃度の
抑制にも限界があることである。ちなみに、ある種のＮ
成分含有オフガスを従来燃焼装置を用いて燃焼した場合
、排ガス中ＮＯ，濃度はせいぜい９５１１１ｍ程度まで
しか低減されないことが知られている。The second point is that the combustion temperature can only be lowered by 850~90℃ at most.
The limit is 0°C, and therefore there is a limit to the suppression of the NO concentration in the exhaust gas. By the way, some kind of N
It is known that when component-containing offgas is combusted using a conventional combustion device, the concentration of NO in the exhaust gas is reduced to about 95111 m at most.
本発明の目的は、上記した従来技術の欠点をなくシ、助
燃料の使用を要することなく、燃焼させることができ、
かつＮＯ，の低減が可能な低カロリーガスの燃焼装置を
提供することにある。The object of the present invention is to eliminate the drawbacks of the prior art described above, and to enable combustion without requiring the use of auxiliary fuel.
Another object of the present invention is to provide a low-calorie gas combustion device that can reduce NO.
上記の目的を達成するため、本発明は、上流側のスチー
ム過熱管とこれに発生飽和スチームを供給する後流側の
完熱ボイラとを備えだものにおいて、上記スチーム過熱
管を燃焼触媒被覆管とするとともに、これに低カロリー
ガスを接触、燃焼させるための低カロリーガス供給部と
、低カロリーガス燃焼開始用の加熱手段とを設けたこと
を特徴とする。In order to achieve the above object, the present invention provides an upstream steam superheating tube and a downstream completion boiler for supplying generated saturated steam to the steam superheating tube, in which the steam superheating tube is replaced with a combustion catalyst clad tube. The present invention is characterized in that it is provided with a low-calorie gas supply section for contacting and combusting the low-calorie gas, and a heating means for starting combustion of the low-calorie gas.
本発明において、スチーム過熱管に被覆する燃焼触媒（
以下、単に触媒と称することがある）は、従来公知の触
媒が広く適用ＯＴ能であるが、一般に３００〜６５０℃
の低温下で低カロリーガスを着火、燃焼継続できるもの
が好ましく、特に白金系およびパラジウム系の触媒は３
００℃程度の低温でも上記の機能を有するので特に好ま
しい。燃焼触媒のスチーム過熱管への被覆は特に制限は
なく、公知の任意方法に従えばよい。一般には、セラミ
ック系材料等の担体に触媒を含浸させたものを、スチー
ム過熱管表面に塗布まだは蒸着させることだより容易に
被覆することができる。その際、得られる被覆触媒の活
性（着火温度で代表される）は、第４図からも明らかな
ように、担体への触媒成分担持量や担持方式（図中のＡ
、ＢおよびＣ参照）の相異により変化するが、着火温度
として３００〜６５０℃、望ましくは５００〜６００℃
を示すものであれば上記触媒活性の変化に関係なく充分
に使用可能である。In the present invention, the combustion catalyst (
Conventionally known catalysts (hereinafter sometimes simply referred to as catalysts) have widely applicable OT performance, but are generally heated at temperatures of 300 to 650°C.
Catalysts that can ignite and continue burning low-calorie gas at low temperatures are preferred, and platinum-based and palladium-based catalysts are particularly preferred.
It is particularly preferable because it has the above function even at a low temperature of about 00°C. There is no particular restriction on the method of coating the steam superheating tube with the combustion catalyst, and any known method may be used. Generally, a carrier such as a ceramic material impregnated with a catalyst can be easily coated on the surface of the steam heating tube by coating or vapor depositing it. At that time, the activity of the resulting coated catalyst (represented by the ignition temperature) is determined by the amount of catalyst components supported on the carrier and the supporting method (A in the figure), as is clear from Figure 4.
, B and C), but the ignition temperature is 300 to 650°C, preferably 500 to 600°C.
If it shows this, it can be used satisfactorily regardless of the above-mentioned change in catalyst activity.
スチーム過熱管をこのような触媒被覆管とすることによ
り、定常運転時には、該触媒被覆管の内側に後流の廃熱
ボイラから供給されるスチームが、またその外側には低
カロリーガス供給部から導入される低カロリーガスか存
在することとなるが、上記触媒波ａ管の管壁は内側を流
れるスチームにより常時低カロリーガスの着火温度以上
に加熱されているので、外側に存在する低カロリーガス
は継続して燃焼することとなる。該燃焼によシ発生する
熱のうち、１部は発生後直ちに触媒被覆管の肉厚を通し
て管内のスチーム加熱に利用され、残部は排ガスの顕熱
となり後流の廃熱ボイラでスチーム発生熱源として利用
される。このように、燃焼熱の伝達や供与は極めて良好
に行われるので、触媒被覆管は過度に加熱されることな
く、常に管内スチーム温度と管外燃焼ガス温度の中間温
度に保たれ、その結果、低温の燃焼反応が継続して実施
される。By using such a catalyst clad tube as the steam superheating tube, during steady operation, the steam supplied from the waste heat boiler downstream is inside the catalyst clad tube, and the steam supplied from the low calorie gas supply section is outside the catalytic clad tube. However, since the wall of the catalytic wave a-tube is always heated above the ignition temperature of the low-calorie gas by the steam flowing inside, the low-calorie gas present on the outside will be present. will continue to burn. Of the heat generated by the combustion, a portion is immediately used to heat the steam inside the tube through the thickness of the catalyst cladding tube, and the remainder becomes sensible heat of the exhaust gas and is used as a steam generation heat source in the downstream waste heat boiler. used. In this way, combustion heat is transferred and provided extremely well, so the catalyst cladding tube is not overheated and is always maintained at a temperature between the steam temperature inside the tube and the combustion gas temperature outside the tube, and as a result, The low temperature combustion reaction continues.
ところで、起動時（燃焼開始時）には、触媒被覆管の温
度が低いので、これを低カロリーガスの着火温度以上に
まで昇温する必要がある。該昇温（加熱）手段としては
−１これを可能とする任意の手段でよいが、助燃バーナ
まだは過熱管へのスチーム供給弁が一般に好ましい。こ
れらの加熱手段を作動させることにより触媒被覆管は昇
温され、その結果、低カロリーガスは燃焼を開始するが
、該燃焼開始後は加熱手段の作動を停止することができ
る。By the way, at the time of startup (when combustion starts), the temperature of the catalyst cladding tube is low, so it is necessary to raise the temperature to the ignition temperature of the low calorie gas or higher. The temperature raising (heating) means may be any means that enables this, but a steam supply valve to an auxiliary burner or a superheating tube is generally preferred. By operating these heating means, the temperature of the catalyst cladding tube is raised, and as a result, the low-calorie gas starts to burn, but after the start of combustion, the operation of the heating means can be stopped.
本発明において、燃焼の対象となる低カロリーガスは、
低カロリーオフガスを始めとする非自然性の燃焼性ガス
を広く含む。また、廃熱ボイラーとしては、通常のパイ
ドラム−フィンチューブ屋のものを始め、公知の任意型
式のものが広く適する。触媒被覆庁は、スチーム過熱管
としての機能と低カロリーガスの燃焼を接触する機能と
を併せ有する限り任意の構造のものでよいが、一般に燃
焼ガスの流れ方向に浴って上下ジグザグ段状で多列状に
配設された構造のものが触媒表面積および伝熱面積を拡
大する上で特に好ましい。低カロリーガスの供給部分は
、１個の供給口により構成することもできるが、燃焼反
応をＮＯ工抑制上有利な低温かつ均一に行うため複数個
の供給口とし、それらを上記上下ジグザグ段状とされた
触媒被覆管の各段間に分割配設することもできる。なお
、触媒被覆管部の適宜位置にバーナを設けることもでき
るが、この場合には失火対策上の要請を満足することか
可能となるう
以下、図面に示す実施例によシ本発明をさらに詳しく説
明する。In the present invention, the low calorie gas to be combusted is
Contains a wide range of non-natural combustible gases, including low-calorie off-gases. Further, as the waste heat boiler, any known type is widely suitable, including the usual piedrum-fin tube type. The catalyst-coated chamber may have any structure as long as it has both the function of a steam superheating tube and the function of contacting the combustion of low-calorie gas, but it is generally shaped like a zigzag step in the direction of the flow of combustion gas. A structure in which the catalysts are arranged in multiple rows is particularly preferred in order to increase the catalyst surface area and heat transfer area. The low calorie gas supply section can be configured with one supply port, but in order to carry out the combustion reaction uniformly and at a low temperature that is advantageous for suppressing NO production, it is configured with multiple supply ports, and these are arranged in the above-mentioned upper and lower zigzag step shape. It is also possible to arrange the catalyst cladding tubes separately between each stage. Incidentally, it is also possible to provide a burner at an appropriate position in the catalyst cladding tube section, but in this case, it is possible to satisfy the requirements for preventing misfires. explain in detail.
第２図および第３図に示す装置は、第１図に示す符号と
その説明が同様に参照されるスチーム過熱器３および廃
熱ボイラ４の部分と、第１図に示すものと同様な構造の
スチーム過熱管の表面上に第５図に示すように燃焼触媒
１８を被覆した触媒被覆管３０Ａと、オフガス供給主配
管から分岐して過熱器３の対向側壁に達する各６本の枝
管１６と、それらの各先端部に設けられたオフガス供給
口６Ａと、助燃料配管８Ａを経て供給される助燃料を燃
焼するためスチーム過熱器３の上流側端部に設けられた
助燃バーナ９Ａと、触媒被覆・σ３゜Ａの入口側におい
てスチーム配管１４に付設されたスチーム供給弁１７と
から主に構成される。上記触媒被覆管３０Ａは、スチー
ム過熱器３の軸心方向（燃焼ガスの流れ方向）に歯って
上下ジグザグ段状で、かつ多列状に配設された構造とな
っており、また、オフガス供給口６Ａはそれぞれ上記触
媒被覆ｆ３０Ａの各段間に開口するように設けられてい
る。The apparatus shown in FIGS. 2 and 3 has a structure similar to that shown in FIG. 1, with parts of the steam superheater 3 and waste heat boiler 4 to which the numbers and descriptions shown in FIG. 1 are also referred to. As shown in FIG. 5, a catalyst cladding tube 30A coats a combustion catalyst 18 on the surface of the steam superheating tube, and six branch tubes 16 each branching from the off-gas supply main piping and reaching the opposite side wall of the superheater 3. , an off-gas supply port 6A provided at each tip thereof, and an auxiliary combustion burner 9A provided at the upstream end of the steam superheater 3 for burning the auxiliary fuel supplied via the auxiliary fuel pipe 8A. It mainly consists of a steam supply valve 17 attached to a steam pipe 14 on the inlet side of the catalyst coating and σ3°A. The catalyst cladding tubes 30A have a structure in which they are disposed in multiple rows in a vertical zigzag manner in the axial direction of the steam superheater 3 (flow direction of combustion gas). The supply ports 6A are provided so as to open between each stage of the catalyst coating f30A.
このような構成の装置において、燃焼開始時には、スチ
ーム供給弁１７を開操作してスチームを供給するか、ま
たは助燃バーナ９Ａを点火することにより触媒被覆−＃
３０ Ａの昇温（一般に３００〜６５０℃）が行われ
、その後、オフガス供給口６Ａからオフガスが噴入され
る。噴入後のオフガスは上記被覆触媒成分の接触作用を
受け、直ちに燃焼を開始する。In an apparatus having such a configuration, at the start of combustion, the steam is supplied by opening the steam supply valve 17, or the auxiliary combustion burner 9A is ignited to remove the catalyst coating.
The temperature is raised to 30 A (generally 300 to 650° C.), and then off-gas is injected from the off-gas supply port 6A. The off-gas after being injected is contacted by the coated catalyst component and immediately starts combustion.
上記燃焼にともない発生する熱の１部は排ガスとともに
後流の廃熱ボイラ４へ送られ、ここでフィンチュプ１１
を介してスチーム発生用熱源として利用される。一方、
残部の燃焼熱は、触媒被覆管３０Ａの肉厚を通して該管
内に達し、上記廃熱ボイラ４で発生したのちスチーム配
管１４を経て供給される飽和スチームの過熱用熱源とし
て利用される。なお、上記廃熱ボイラ４で熱回収後の排
ガスダクト５を経て大気中に放出され、また、触媒被覆
管３０Ａ内で過熱されたスチームは過熱スチーム取出管
１５を経て取出され、適宜の用途に利用される。A part of the heat generated by the combustion is sent to the downstream waste heat boiler 4 together with the exhaust gas, where it is sent to the fin chup 11.
It is used as a heat source for steam generation. on the other hand,
The remaining combustion heat reaches the inside of the catalyst cladding tube 30A through its wall thickness, and is used as a heat source for superheating the saturated steam generated in the waste heat boiler 4 and supplied via the steam pipe 14. In addition, the steam that is released into the atmosphere through the exhaust gas duct 5 after heat recovery in the waste heat boiler 4 and superheated within the catalyst cladding tube 30A is taken out through the superheated steam extraction tube 15 and used for appropriate purposes. used.
上記のように、一旦オフガスの燃焼が開始すると、燃焼
熱の伝達や供与が極めて良好に行われるので、触媒被覆
管３０Ａは比較的早期にオフガス燃焼にとって好適な低
温の燃焼温度に達し、かつこの状態が維持されることに
なる。このような安定しだ昇温状態においては助燃操作
を要せずに燃焼を継続することができるので、経済的に
不利をともなう外部スチームの供給（スチーム供給弁１
７の開操作によるスチームの供給）まだは助燃バーナ９
Ａによる助燃料の燃焼を省略することができる。また、
オフガスの燃焼は比較的低温で行われるので、ＮＯｘの
発生を抑制することができる。As mentioned above, once the combustion of off-gas starts, the transfer and provision of combustion heat is performed extremely well, so that the catalyst cladding tube 30A relatively quickly reaches a low combustion temperature suitable for off-gas combustion, and The condition will be maintained. In such a stable temperature rising state, combustion can be continued without the need for auxiliary combustion operation, so external steam supply (steam supply valve 1), which is economically disadvantageous, can be continued.
7) Supply of steam by opening operation of auxiliary combustion burner 9
Combustion of auxiliary fuel by A can be omitted. Also,
Since off-gas combustion is performed at a relatively low temperature, the generation of NOx can be suppressed.
さらに、本発明の実施列では、第６図からも明らかなよ
うに、燃焼ガスの流れ方向に浴って触媒被覆管３０Ａを
多段状に設け、それらの股間にオフガス供給口６Ａから
オフガスを噴出して燃焼するという一種の多段燃焼方式
を採用しているため、燃焼温度Ｔの変化からも分るよう
に局部的な高温燃焼はなく、比較的均一な燃焼が行われ
る。そのため、ＮＯｘの発生を一段と低減することがで
きる。Furthermore, in the embodiment of the present invention, as is clear from FIG. 6, the catalyst cladding tubes 30A are provided in multiple stages in the flow direction of the combustion gas, and offgas is ejected from the offgas supply port 6A between the crotches. Since a kind of multi-stage combustion method is adopted in which combustion is carried out at different temperatures, there is no localized high-temperature combustion, as can be seen from the change in combustion temperature T, and relatively uniform combustion occurs. Therefore, the generation of NOx can be further reduced.
以上、本発明によれば、廃熱ボイラの上流側に設けられ
る過熱管を低カロリーガスの燃焼を接触する燃焼触媒被
覆管としたことにより、低カロリーガスを燃焼時や経済
的に不利となる助燃操作を要することなく燃焼できる上
、低温燃焼がＯＴ能となるので、ＮＯ工を低減すること
ができる。As described above, according to the present invention, since the superheating tube provided on the upstream side of the waste heat boiler is a combustion catalyst clad tube that contacts the combustion of low-calorie gas, it becomes economically disadvantageous when low-calorie gas is combusted. In addition to being able to burn without requiring auxiliary combustion operations, low-temperature combustion becomes an OT function, so NO operations can be reduced.
第１図は、従来のオフガス燃焼装置を示す側断面図、第
２図は、本発明の実施列に係るオフガス燃焼装装置の側
断面図、第３図は、第２図に示すオフガス燃ｔ８装置の
平面図、第４図は、触媒担持方式の差が触媒性能１（与
える影響を説明する図、第５図は、第２図に示すオフガ
ス燃焼装置の主要部を構成する触媒被覆管の断面図、第
６図は、・第２図に示すオフガス燃焼装置を用いてオフ
ガスを燃焼する場合の触媒被覆管部における温度分布を
説明する図である。
３・・・スチーム過熱器、４・・・廃熱ボイラ・・・６
．６Ａ・・・オフガス供給口、７・・・オフガス供給主
配管、８．８Ａ・・・助燃料配管、９．９Ａ・・・助燃
バーナ、１１・・・フィンチューブ、１２・・・上ドラ
ム、１３・・・下ドラム、１４・・・スチーム配管、１
５・・・過熱スチーム取出配管、１６・・・枝管、１７
・・・スチーム供給弁、１８・・・燃焼触媒、３０・・
・スチーム過熱管、３ｏＡ・・・触媒被覆管。
代理人 弁理士 川 北 武 長
第１図
第 ２Ｗｊ
第３図FIG. 1 is a side sectional view showing a conventional off-gas combustion device, FIG. 2 is a side sectional view of an off-gas combustion device according to an embodiment of the present invention, and FIG. 3 is a side sectional view showing a conventional off-gas combustion device. A plan view of the device, FIG. 4, is a diagram explaining the effect of the difference in catalyst loading method on catalyst performance (1), and FIG. The cross-sectional view, FIG. 6 is a diagram illustrating the temperature distribution in the catalyst cladding tube section when off-gas is combusted using the off-gas combustion device shown in FIG. 2. 3. Steam superheater, 4. ...Waste heat boiler...6
．． 6A...Off gas supply port, 7...Off gas supply main pipe, 8.8A...Auxiliary fuel pipe, 9.9A...Auxiliary combustion burner, 11...Fin tube, 12...Upper drum, 13... Lower drum, 14... Steam piping, 1
5... Superheated steam extraction pipe, 16... Branch pipe, 17
...Steam supply valve, 18...Combustion catalyst, 30...
・Steam superheating tube, 3oA...Catalyst coated tube. Agent Patent Attorney Takenaga Kawakita Figure 1 Figure 2Wj Figure 3
Claims (1)
ムを供給する後流側の廃熱ボイラとを備えだものにおい
て、上記スチーム過熱管を燃焼触媒被覆管とするととも
に、これ忙低カロリーガスを接触、燃焼させるための低
カロリーガス供給部と、低カロリーガス燃焼開始用の加
熱手段とを設けたことを特徴とする低カロリーガス燃焼
装置。 （２、特許請求の範囲７ｓ１項において、前記低カロリ
ーガス燃焼開始用の加熱手段は助燃バーナであることを
特徴とする低カロリーガス燃焼装置。 （３）特許請求の範囲第１項において、前記低カロリー
ガス燃焼開始用の加熱手段はスチーム過熱管へのスチー
ム供給弁であることを特徴とする低カロリーガス燃焼装
置。 （４）特許請求の範囲ｓ１項において、前記スチーム過
熱管は燃焼ガスの流れ方向に沿って上下ジグザグ段状で
、かつ多列状に設けられたものであり、かつ前記低カロ
リーガス供給部は上記スチーム過熱管の各段間に分岐配
設されたものであることを特徴とする低カロリーガス燃
焼装置。[Scope of Claims] (1) A device comprising an upstream steam superheating tube and a downstream waste heat boiler for supplying generated saturated steam to the steam superheating tube, in which the steam superheating tube is a combustion catalyst clad tube; A low-calorie gas combustion device, characterized in that it is provided with a low-calorie gas supply section for contacting and burning the low-calorie gas, and a heating means for starting combustion of the low-calorie gas. (2. In claim 7s1, the low-calorie gas combustion device is characterized in that the heating means for starting combustion of the low-calorie gas is an auxiliary combustion burner. (3) In claim 1, A low calorie gas combustion device characterized in that the heating means for starting combustion of the low calorie gas is a steam supply valve to a steam superheating tube. The steam superheating tubes are arranged in vertical zigzag steps and in multiple rows along the flow direction, and the low calorie gas supply section is branched between each stage of the steam superheating tube. Characteristic low calorie gas combustion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57218423A JPS59109712A (en) | 1982-12-15 | 1982-12-15 | Poor calorie gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57218423A JPS59109712A (en) | 1982-12-15 | 1982-12-15 | Poor calorie gas burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59109712A true JPS59109712A (en) | 1984-06-25 |
| JPH0381047B2 JPH0381047B2 (en) | 1991-12-26 |
Family
ID=16719677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57218423A Granted JPS59109712A (en) | 1982-12-15 | 1982-12-15 | Poor calorie gas burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59109712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2900061A1 (en) * | 2006-04-21 | 2007-10-26 | Inst Francais Du Petrole | Concentrating carbon dioxide in discharged fumes by a generator, comprises compressing a fuel in the form of an air in a gas inlet, making a combustion of air and fuel in the inlet and evacuating the fumes produced by the combustion |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8844897B2 (en) | 2008-03-05 | 2014-09-30 | Southwire Company, Llc | Niobium as a protective barrier in molten metals |
| US8652397B2 (en) | 2010-04-09 | 2014-02-18 | Southwire Company | Ultrasonic device with integrated gas delivery system |
| KR102306057B1 (en) | 2013-11-18 | 2021-09-29 | 사우쓰와이어 컴퍼니, 엘엘씨 | Ultrasonic probes with gas oulets for degassing of molten metals |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151552U (en) * | 1974-10-18 | 1976-04-19 | ||
| JPS52102902A (en) * | 1976-02-24 | 1977-08-29 | Mitsubishi Heavy Ind Ltd | Boiler with dry type denitrator |
| JPS57196002A (en) * | 1981-05-25 | 1982-12-01 | Babcock Hitachi Kk | Boiler device for recovering waste heat |
-
1982
- 1982-12-15 JP JP57218423A patent/JPS59109712A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151552U (en) * | 1974-10-18 | 1976-04-19 | ||
| JPS52102902A (en) * | 1976-02-24 | 1977-08-29 | Mitsubishi Heavy Ind Ltd | Boiler with dry type denitrator |
| JPS57196002A (en) * | 1981-05-25 | 1982-12-01 | Babcock Hitachi Kk | Boiler device for recovering waste heat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2900061A1 (en) * | 2006-04-21 | 2007-10-26 | Inst Francais Du Petrole | Concentrating carbon dioxide in discharged fumes by a generator, comprises compressing a fuel in the form of an air in a gas inlet, making a combustion of air and fuel in the inlet and evacuating the fumes produced by the combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0381047B2 (en) | 1991-12-26 |
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