JPS61128002A - Boiler device - Google Patents
Boiler deviceInfo
- Publication number
- JPS61128002A JPS61128002A JP25137284A JP25137284A JPS61128002A JP S61128002 A JPS61128002 A JP S61128002A JP 25137284 A JP25137284 A JP 25137284A JP 25137284 A JP25137284 A JP 25137284A JP S61128002 A JPS61128002 A JP S61128002A
- Authority
- JP
- Japan
- Prior art keywords
- air
- secondary air
- primary
- air heater
- heater
- 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
- 239000000295 fuel oil Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000010742 number 1 fuel oil Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 101100296182 Caenorhabditis elegans paf-2 gene Proteins 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Air Supply (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はボイラ装置に係り、特に石炭専焼および重油専
焼が可能な混焼型のボイラ装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a boiler system, and particularly to an improvement of a mixed-fired boiler system capable of exclusively firing coal and heavy oil.
従来例に係る石炭専焼および重油専焼のどちらも可能な
混焼型のボイラ装置の全体構成を第２図に示す。この図
に示すように、従来のボイラ装置では、供給系が２次空
気系と１次空気系とから構成されている。２次空気系は
燃料の燃焼用２次空気をボイラ１０に供給するものであ
り、その２次空気供給系路１２には押込送風器（以下Ｆ
ＤＰという）１４、蒸気式空気加熱器（以下ＢＡＨとい
う）１６および前記ボイラ１０の排ガス系路１８との間
で熱交換を行う２次空気加熱器２０を設置し、燃焼用２
次空気を予熱しなからボイラ１０に供給するようにして
いる。また、１次空気系は石炭専焼時のみ運用される系
統でちり、燃料である石炭とともに燃焼用１次空気とし
てボイラ１０のバーナ２２に供給するものである。この
ため、１次空気供給系統２４には１次燃焼用空気ファン
（以下ＰＡＦという）２６、前記排ガス系統１８の上流
側で熱交換を行う１次空気加熱器２８および燃料用石炭
を粉砕するミル５０を設置し予熱１次空気と微粉炭をバ
ーナ２２に供給させるようにしている。さらに、この１
次空気供給系路２４には１次空気加熱器２日のパイ・イ
ス系路５２を設は冷空気をミル３０に供給しうるように
している。FIG. 2 shows the overall configuration of a conventional mixed-fired boiler device capable of burning only coal and burning only heavy oil. As shown in this figure, in the conventional boiler device, the supply system is composed of a secondary air system and a primary air system. The secondary air system supplies secondary air for fuel combustion to the boiler 10, and a forced air blower (hereinafter referred to as F) is installed in the secondary air supply line 12.
DP) 14, a steam air heater (hereinafter referred to as BAH) 16, and a secondary air heater 20 that performs heat exchange with the exhaust gas line 18 of the boiler 10.
Next, the air is supplied to the boiler 10 without being preheated. Further, the primary air system is a system that is operated only when burning coal exclusively, and supplies dust and coal, which is a fuel, to the burner 22 of the boiler 10 as primary air for combustion. Therefore, the primary air supply system 24 includes a primary combustion air fan (hereinafter referred to as PAF) 26, a primary air heater 28 that performs heat exchange on the upstream side of the exhaust gas system 18, and a mill that crushes fuel coal. 50 is installed to supply preheated primary air and pulverized coal to the burner 22. Furthermore, this one
A primary air heater 2-day pipe/chair system 52 is provided in the secondary air supply system 24 so that cold air can be supplied to the mill 30.
そしてミル５０の上流側で１次供給系路２４とバイパス
系路３２とにはそれぞれダン１４５４．５６を設けてい
る。Further, on the upstream side of the mill 50, the primary supply line 24 and the bypass line 32 are each provided with a Dan 1454.56.
このような従来のボイラ装置では、まず石炭専焼時にお
いて２次空気系では、ＦＤＦ１４より送風された冷空気
は２次空気加熱器２０でボイラ排ガスと熱交換され熱空
気となって燃焼用２次空気としてバーナ２２に供給され
る。一方、１次空気系では、ＰＡＦ２６によυ送風され
た冷空気は１次空気加熱器２８でボイラ排ガスと熱交換
されて熱空気となる一方、ＰＡＦ２（５の出口より分岐
した冷空気と混合しミル５０に至シ、燃料である石炭と
ともに１次空気としてバーナ２２に供給される。そして
、重油専焼時には１次空気系は１次空気系ダンノ４５４
およびミル冷空気ダンパ５６が閉とされ、供給を停止し
て２次空気系のみ運用して行われる。すなわち、ＦＤＦ
１４よシ送風された冷空気はＢＡＨｊ６によシ予熱され
るとともに２次空気加熱器２０にてさらに加熱されて熱
空気となり、２次空気としてバーナ２２に供給されるの
である。In such a conventional boiler device, first, during coal-only combustion, in the secondary air system, the cold air blown from the FDF 14 is heat exchanged with the boiler exhaust gas in the secondary air heater 20, and becomes hot air, which is then sent to the secondary air system for combustion. It is supplied to the burner 22 as air. On the other hand, in the primary air system, the cold air blown by the PAF 26 exchanges heat with the boiler exhaust gas in the primary air heater 28 to become hot air, and mixes with the cold air branched from the outlet of PAF 2 (5). It is supplied to the burner 22 as primary air together with coal as fuel to the mill 50.When burning only heavy oil, the primary air system is connected to the primary air system Danno 454.
Then, the mill cold air damper 56 is closed, the supply is stopped, and only the secondary air system is operated. That is, F.D.F.
The cold air blown by the BAHj 6 is preheated by the BAHj 6 and further heated by the secondary air heater 20 to become hot air, which is then supplied to the burner 22 as secondary air.
ところで、上記従来のボイラ装置では、重油専焼時に２
次空気加熱器２０の低温腐食発生の問題があるため、当
該２次空気加熱器２０への導入空気温度を低温腐食が発
生しない温度以上に保つ必要があり、このため２次空気
加熱器２０の前段にＢＡＨｉ （Ｓを設置し、ＦＤＦ１
４よシ送風された冷空気を予熱することで対処している
。このため、８ＡＨ１６への加熱蒸気供給のための熱源
が別に必要となシ、２次空気加熱器２ａのメタル温度を
低温腐食が発生しない温度以上に保つためにのみＥＩＡ
Ｈ１６を設置しなければならず、設備負荷となっていた
。By the way, in the above-mentioned conventional boiler equipment, when burning only heavy oil, 2
Since there is a problem of low-temperature corrosion occurring in the secondary air heater 20, it is necessary to maintain the temperature of the air introduced into the secondary air heater 20 above a temperature at which low-temperature corrosion does not occur. BAHi (S is installed in the front stage, FDF1
This is dealt with by preheating the cold air that is blown out. Therefore, a separate heat source for supplying heating steam to 8AH16 is required, and EIA is used only to keep the metal temperature of secondary air heater 2a above the temperature at which low-temperature corrosion does not occur.
H16 had to be installed, which was a burden on the equipment.
また、１次空気供給系易２４に配置されるＰＡＦ２６は
、ミル５０の前段に配置されたダンパ５４．５６を閉状
態で起動するため、サージングの問題が生じ、との丈−
ジング防止のためにダン／４’５８を介在した再循環系
路４０を設置していたところである。このような再循環
系路４０もＰＡＦ ２６の起動時にのみ必要とされるも
のでラシ、本来的なボイラ装置の運転には寄与せずやは
り設備上の負荷となっていたところである。In addition, since the PAF 26 placed in the primary air supply system 24 starts the dampers 54 and 56 placed in the front stage of the mill 50 in a closed state, a surging problem occurs.
A recirculation system line 40 with a Dan/4' 58 interposed therebetween was being installed to prevent damage. Such a recirculation system path 40 is also required only when starting up the PAF 26, and does not contribute to the essential operation of the boiler apparatus and is a load on the equipment.
本発明は、上記従来の問題点に着目し、２次空気供給系
路中に設置された２次空気加熱器の入口側にＢＡＨを設
置４することなく、２次空気加熱器の入口温度を低温腐
食が発生しない温度以上に保つことができるようくし、
同時に１次空気供給系路に設置されたＰＡＦのサージン
グ防止を再循環系路を設ける必要がなくサージングを防
止できるようにしたボイラ装置を提供することを目的と
する。The present invention has focused on the above-mentioned conventional problems, and has made it possible to control the inlet temperature of the secondary air heater without installing a BAH on the inlet side of the secondary air heater installed in the secondary air supply system. It is possible to maintain the temperature above which low-temperature corrosion does not occur.
At the same time, an object of the present invention is to provide a boiler device that can prevent surging of a PAF installed in a primary air supply system without the need to provide a recirculation system.
上記目的を達成するために、本発明に係るボイラ装置は
、石炭専焼および重油専焼が可能なボイラ装置において
、排ガス経路との間で１次空気加熱をなす１次空気加熱
器の出口部と２次空気加熱をなす２次空気加熱器の入口
部とをダンパを介在した連絡通路により接続し、１次空
気側の熱空気を２次側の供給系に流入可能に構成したも
のである〇
〔作 用〕
上記構成によシ、２次空気加熱器の入口側に１次空気加
熱器を通して加熱された１次側の熱空気の一部を流入さ
せることにより、２次空気加熱器の入口温度を低温腐食
が発生しない温度まで高めることができ、別にＥＩＡＨ
を設置することなく低温腐食−１ｉ発生しない温度以上
に高めることができるのである。また、ＰＡＦ２６の起
動時において、前記連絡通路に介在したダン／４を開放
することによｆｉ、ＦＡＩＦの出側通路が２次空気供給
系路に開放することになるため、サー）ング防止のため
の再循環系路を設けることが不要となるのである。In order to achieve the above object, the boiler device according to the present invention is a boiler device capable of exclusively burning coal and heavy oil. The inlet of the secondary air heater that heats the primary air is connected through a communication passage with a damper interposed, so that the hot air on the primary air side can flow into the supply system on the secondary side.〇〇 Effect] According to the above configuration, a part of the hot air on the primary side heated through the primary air heater flows into the inlet side of the secondary air heater, thereby reducing the inlet temperature of the secondary air heater. can be raised to a temperature at which low-temperature corrosion does not occur, and separately EIAH
It is possible to raise the temperature above the temperature at which low-temperature corrosion-1i does not occur without installing a Furthermore, when the PAF 26 is activated, by opening the D/4 interposed in the communication passage, the outlet passage of the FAIF is opened to the secondary air supply system passage, which prevents surging. This eliminates the need to provide a recirculation system for this purpose.
〔実施例〕
以下に本発明に係るボイラ装置の実施例を第１図を参照
して詳細に説明する。[Example] Hereinafter, an example of a boiler apparatus according to the present invention will be described in detail with reference to FIG.
第１図は実施例のボイラ装置を示す全体構成図でちる。FIG. 1 is an overall configuration diagram showing a boiler apparatus according to an embodiment.
この図に示されるように、このボイラ装置はボイラ１０
のバーナ（２（２に接続される２次空気供給系路１２に
ＦＤＦ １４を設置し、２次空気をハニナ２２に向けて
供給するようにしている。As shown in this figure, this boiler device has a boiler 10
An FDF 14 is installed in the secondary air supply line 12 connected to the burner 2 (2) to supply secondary air toward the burner 22.
ＦＤＦ ｊ ４の下流側にはボイラ１０の排ガス糸路１
日との間で２次空気加熱をなす２次空気加熱器２０が設
置され、従来設けられていたＳＡ■１６゛を省略してい
る。従って、Ｆ’ＤＦ１４により直接２次空気加熱器２
０に導入されて２次空気が予熱されバーナ２２に供給さ
れるのである。また、バーナ２２には１次供給糸路２４
が接続されているが、この糸路２４にはＰＡＦ ２６と
前記２次空気加熱器２０の前段側に配置されやはシ・排
ガス系路１８との間で熱交換をなす１次空気加熱器２日
とを設置し、予熱された１次空気をさらに下流側のミル
５０に供給するようにし、ミル５０から燃料微粉炭とと
もに１次空気をバーナ２２に供給するようにしている。The exhaust gas line 1 of the boiler 10 is located downstream of the FDF j 4.
A secondary air heater 20 is installed to perform secondary air heating between the air and the sun, and the conventional SA 16 is omitted. Therefore, the secondary air heater 2 is directly controlled by F'DF14.
0, the secondary air is preheated and supplied to the burner 22. The burner 22 also includes a primary supply yarn path 24.
is connected to this yarn path 24, and a primary air heater that performs heat exchange between the PAF 26 and the exhaust gas system path 18, which is disposed on the upstream side of the secondary air heater 20, is connected to the yarn path 24. The preheated primary air is supplied to the mill 50 on the downstream side, and the primary air is supplied from the mill 50 to the burner 22 together with the fuel pulverized coal.
ミル５０の上流部において１次空気加熱器２日のパイ・
９ス系路５２が設けられ、ミル３０には加熱器２８を経
た熱空気とバイノ臂ス糸路３２を経た冷空気とが同時に
供給されるものとなっている。また１次空気加熱器２８
からのミル３０への供給路とパイ／４ス系路５２からの
ミル５０への供給系路中にはそれぞれダンパ５４．５６
が配置され、通路の開閉をなすようにしている。In the upstream part of the mill 50, the primary air heater
A nine thread line 52 is provided, and the mill 30 is supplied with hot air that has passed through the heater 28 and cold air that has passed through the binosu thread line 32 at the same time. Also, the primary air heater 28
A damper 54,56 is provided in the supply line to the mill 30 from the pipe line 52 and the supply line to the mill 50 from the pi/quarter line 52, respectively.
are arranged to open and close the passage.
ここで、本発明に係る実施例では、１次空気供給糸路２
４における１次空気加熱器２日の出口部と、２次空気供
給糸路１２における２次空気加熱器２００Å口部とを直
結する連絡通路５０を設けたものである０そしてこの連
絡通路５０にはダン・ダ５２を配置し、１次空気供給糸
路２４と２次空気供給糸路１２との間を断続しうるもの
としている。Here, in the embodiment according to the present invention, the primary air supply line 2
A communication passage 50 is provided which directly connects the outlet of the primary air heater 2 in 4 and the mouth of the secondary air heater 200 Å in the secondary air supply line 12. A dan 52 is arranged to connect and connect the primary air supply line 24 and the secondary air supply line 12.
なお、第１図中４２はサイレンサであり、４４は煙突で
ある。In addition, 42 in FIG. 1 is a silencer, and 44 is a chimney.
このように構成されたボイラ装置によれば、まず、石炭
専焼時には、２次空気系にてＦＤＦ １４よシ送風され
た冷空気は２次空気加熱器２０にて加熱され、熱空気と
なって燃焼用２次空気としてノンーナ２２に供給される
。１次空気系においては、ＰＡＰ２６によシ送風された
冷空気が１次空気加熱器２日で加熱され、熱空気となる
一方、ＰＡＩＦ２６の出口より分岐した冷空気と混合し
、ミル５０へ至り燃料である石炭とともに１次空気とし
てバーナ２２に供給されるものとなる０この石炭専焼時
には連絡通路５０におけるダン／＃５２は閉状態とされ
る。According to the boiler device configured in this way, first, during coal-only combustion, the cold air blown through the FDF 14 in the secondary air system is heated in the secondary air heater 20 and becomes hot air. It is supplied to the nonna 22 as secondary air for combustion. In the primary air system, the cold air blown by the PAP 26 is heated by the primary air heater 2 days and becomes hot air, while it mixes with the cold air branched from the outlet of the PAIF 26 and reaches the mill 50. At the time of exclusive coal combustion, which is supplied to the burner 22 as primary air together with the coal that is the fuel, the Dan/#52 in the communication passage 50 is in a closed state.
これに対し重油専焼時には、１次空気系にて、１次空気
ダン・＃５４およびミル冷空気ダン１４５６が閉となシ
停止状態とし、１’ＡＩＰ２５＞よび１次空気加熱器２
日を運転する。そして、ＰＡＦ２１Ｓによシ送風された
冷空気は１次空気加熱６２Ｂで予熱されて熱空気となり
、前記連絡通路５０のダン”５２を開き、当該連絡通路
５０を通じて２次空気加熱器２００Å口側に供給される
０そしてＩＦＤＩＦ ｊ ４により送風された冷空気と
混合させ、２次空気加熱器２０の入口空気を予熱し、予
熱状態でさらに２次空気加熱器２０によシ加熱し、燃焼
用２次空気としてバーナ２２に供給されるのである。On the other hand, when burning heavy oil only, the primary air system is in a stopped state with the primary air dan #54 and the mill cold air dan 1456 closed, and the primary air heater 2
Driving the day. The cold air blown by the PAF 21S is preheated by the primary air heater 62B and becomes hot air, which opens the Dan 52 of the communication passage 50 and flows through the communication passage 50 to the outlet side of the secondary air heater 200A. The inlet air of the secondary air heater 20 is mixed with the supplied cold air and the cold air blown by the IFDIF j 4, and the inlet air of the secondary air heater 20 is preheated, further heated in the preheated state by the secondary air heater 20, and then It is supplied to the burner 22 as secondary air.
このように、当該実施例で１次空気加熱器２日の出口と
２次空気加熱器２０の入口とを連絡する連絡通路５０を
設けて空気を予熱し、予熱空気を２次空気加熱器２０に
供給させることができるので、２次空気加熱器２０の低
温腐食防止の観点から設けなければならなかった５ＡＨ
１６（第２図参照）を省略することができ、重油専焼時
の低温腐食を防止しうる２次空気加熱器２０のメタル温
度を確保することができるのである。In this embodiment, air is preheated by providing the communication passage 50 that connects the outlet of the primary air heater 2 and the inlet of the secondary air heater 20, and the preheated air is transferred to the secondary air heater 20. 5AH, which had to be provided from the viewpoint of preventing low-temperature corrosion of the secondary air heater 20.
16 (see FIG. 2) can be omitted, and it is possible to ensure a metal temperature of the secondary air heater 20 that can prevent low-temperature corrosion during heavy oil-only combustion.
また、本実施例によればダ７ ｔ４５２を介在した連絡
通路５０を設けたことによｐｐｈｙ２６のサージング防
止用に利用されていた再循環系路４０およびそのダン／
４５８を省略することができる。In addition, according to this embodiment, the recirculation system path 40 used for preventing surging of the pphy 26 and its dan /
458 can be omitted.
すなわち、ＰＡＦ２６の起動時など、低風量域で使用さ
れる際に、連絡通路５０のダン・−５２を開け、ＰＡＩ
Ｆ２６の最小風量を当該連絡通路５０を通して２次空気
供給糸路１２に逃がすものとし、サージングを防止する
ことができるのである。That is, when the PAF 26 is used in a low air volume region such as when starting up, the Dan-52 of the communication passage 50 is opened and the PAI
The minimum air volume of F26 is allowed to escape to the secondary air supply line 12 through the communication passage 50, and surging can be prevented.
このように本実施例によれば、従来必要とされていた２
次空気供給糸路１２中の’＋３ＡＨ１６の省略ができる
と同時に、ＰＡＦ循環系路糸路とそのダンパ３８を省略
することが可能となる０〔発明の効果〕
以上説明したように、本発明に係るボイラ装置によれば
、石炭専焼および重油専焼のどちらも可能なボイラ装置
にて、１次空気加熱器の出口部と２次空気加熱部の入口
部とをダン・ｆを介在した連絡通路により接続し、１次
空気供給系路を経て予熱された熱空気の一部を２次空気
供給系路に流入させることができるので、従来必要とさ
れたＳＡＨを省略することができ、かつ１次供給系路中
のＰＡＦサージング防止のために設けていた再循環系路
も省略することができ、もってこの種のボイラ装置の設
備負荷を軽減することができるという優れた効果を秦す
る。In this way, according to this embodiment, two
The '+3AH16 in the next air supply yarn path 12 can be omitted, and at the same time, the PAF circulation path and its damper 38 can be omitted.0 [Effects of the Invention] As explained above, the present invention According to this boiler device, in which both coal-fired and heavy oil-fired boiler devices are possible, the outlet of the primary air heater and the inlet of the secondary air heating section are connected by a communication passage with a dan-f interposed therebetween. Since a part of the preheated hot air can flow into the secondary air supply system through the primary air supply system, the SAH that was conventionally required can be omitted, and the The recirculation line provided to prevent PAF surging in the supply line can also be omitted, resulting in the excellent effect of reducing the equipment load of this type of boiler equipment.
第１図は本実施例に係るボイラ装置の全体構成図、第２
図は従来例に係るボイラ装置の全体構成図である。
１０・・・ボイラ、
１２・・・２次空気供給系路、
１４・・・押込送風器（ＦＤ？ ）、
１６・・・蒸気式空気加熱器（ＢＡＲ）、１８・・・排
ガス系路、 ２０・・・２次空気加熱器、２２・・・
バーナ、 ２４・・・１次空気供給系路、２６・
・・１次燃焼用空気ファン（ＰＡ１＝）、２８・・・１
次空気加熱器、
５０・・・ミル、
５４．５６．３８．５２・・・ダンノダ、４０・・・再
循環系路、 ５０・・・連絡通路。Fig. 1 is an overall configuration diagram of the boiler device according to this embodiment, and Fig. 2
The figure is an overall configuration diagram of a boiler device according to a conventional example. 10... Boiler, 12... Secondary air supply system line, 14... Forced blower (FD?), 16... Steam air heater (BAR), 18... Exhaust gas system line, 20...Secondary air heater, 22...
burner, 24... primary air supply system path, 26...
・Primary combustion air fan (PA1=), 28...1
Secondary air heater, 50... Mil, 54.56.38.52... Dannoda, 40... Recirculation system path, 50... Communication passage.
Claims (1)
いて、排ガス系路との間で１次空気加熱をなす１次空気
加熱器の出口部と２次空気加熱をなす２次空気加熱器の
入口部とをダンパを介在した連絡通路により接続し、１
次側の熱空気を２次側の供給系に流入可能ならしめたこ
とを特徴とするボイラ装置。(1) In a boiler device capable of exclusively firing coal or heavy oil, the outlet of the primary air heater that performs primary air heating between the exhaust gas line and the inlet of the secondary air heater that performs secondary air heating 1 through a communication passage with a damper in between.
A boiler device characterized in that hot air on the next side can flow into a supply system on the secondary side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25137284A JPS61128002A (en) | 1984-11-28 | 1984-11-28 | Boiler device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25137284A JPS61128002A (en) | 1984-11-28 | 1984-11-28 | Boiler device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61128002A true JPS61128002A (en) | 1986-06-16 |
| JPH0474602B2 JPH0474602B2 (en) | 1992-11-26 |
Family
ID=17221849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25137284A Granted JPS61128002A (en) | 1984-11-28 | 1984-11-28 | Boiler device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61128002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014514134A (en) * | 2011-03-04 | 2014-06-19 | フォスター ホイーラ ノース アメリカ コーポレイション | Selective catalyst NOX reduction method and apparatus in power generation boiler |
-
1984
- 1984-11-28 JP JP25137284A patent/JPS61128002A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014514134A (en) * | 2011-03-04 | 2014-06-19 | フォスター ホイーラ ノース アメリカ コーポレイション | Selective catalyst NOX reduction method and apparatus in power generation boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0474602B2 (en) | 1992-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |