JPS60169618A - Environment protection type gas turbine - Google Patents
Environment protection type gas turbineInfo
- Publication number
- JPS60169618A JPS60169618A JP59024390A JP2439084A JPS60169618A JP S60169618 A JPS60169618 A JP S60169618A JP 59024390 A JP59024390 A JP 59024390A JP 2439084 A JP2439084 A JP 2439084A JP S60169618 A JPS60169618 A JP S60169618A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- turbine
- gas turbine
- exhaust gas
- gas
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、低ＮＯＸ燃焼器を設けたガスタービンの排気
ガス中のＣＯおよび）ＩＣの濃度を低減するに好適な環
境対策型ガスタービンに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an environmentally friendly gas turbine suitable for reducing the concentration of CO and IC in the exhaust gas of a gas turbine provided with a low NOx combustor.
近年のガスタービンの問題点としては、高温燃焼によっ
て生ずる窒素酸化物（ＮＯＸ）の低減が重視されている
。ＮＯＸの低減の手段としては、脱硝装置によりＮＯＸ
を還元させるもの、ｕＯＸ燃焼器などを用いて燃焼パタ
ーンを変えるものや、水噴射によって燃焼温度を下げる
ものなどが採用されている。し力為しながら、後に説明
する如く、脱硝装置によるものは設備が高価となると共
に圧力損失が大となる欠点を泪し、燃焼パターンを変え
るものは排気ガス中に有害のＣＯおよびｌ−１０が多く
なシ、この処理に高価の設備を必要とし、かつ圧力損失
も大となる欠点を肩し、水噴射によるものはタービン効
率が低下する欠点が上げられる。As a problem with gas turbines in recent years, emphasis has been placed on reducing nitrogen oxides (NOX) produced by high-temperature combustion. As a means of reducing NOX, a denitrification device is used to reduce NOX.
Some methods have been adopted, such as those that reduce combustion, those that change the combustion pattern using a uOX combustor, and those that lower the combustion temperature using water injection. However, as will be explained later, those using denitrification equipment have the drawbacks of expensive equipment and large pressure loss, while those that change the combustion pattern produce harmful CO and l-10 in the exhaust gas. In many cases, this process requires expensive equipment and has a large pressure loss, while those using water injection have the disadvantage of reducing turbine efficiency.
従って、重要課題であるＮＯＸの低減化のためには、圧
力損失を生じさせることなく、簡便の手段によシＣＯお
よびＨＣの濃度を低減させる手段が要請さ゛れる。Therefore, in order to reduce NOX, which is an important issue, there is a need for a means to reduce the concentration of CO and HC by a simple means without causing pressure loss.
第１図に示す如く、横軸に空燃比（Ｆ／Ａ ）をとり、
縦軸にＮＯＸ、ＣＯ（騨）をとると、ＮＯｘとＣＯとの
間には相反する傾向がある。すなわち、ＮＯＸを低減し
ようとすると、ガスタービンの排気ガス中のＣＯＯ量が
増加する。又、■１０についても図示していないが、Ｃ
Ｏと同じく増加する。As shown in Figure 1, the horizontal axis represents the air-fuel ratio (F/A),
When NOX and CO are plotted on the vertical axis, there is a tendency for NOx and CO to contradict each other. That is, when attempting to reduce NOX, the amount of COO in the exhaust gas of the gas turbine increases. Also, regarding ■10, although not shown, C
It increases like O.
第２図には、ＮＯｘを低減させる脱硝装置を示している
。FIG. 2 shows a denitrification device that reduces NOx.
すなわち、圧縮機ＩＫよって圧縮された空気は２燃焼室
２に入り燃焼し、その排気′ガスによってタービン３が
回転する。タービン３の排気ガスは排気ディフューザ４
ｆ：通り、圧力を回復した後、サイレンサ５により減音
され、脱硝装置の気相還元装置６に導入される。気相還
元装置６には、ＮＨ３注入装置７およびＨ２Ｏ３注入装
置８からＮ ＨｓおよびＨ２０ｚの如き還元剤が注入さ
れる。反応装置９によシ、ＮＯＸはＮＨｓおよびＨ＊
０２によυ下式の如く還元されて低減される。That is, air compressed by the compressor IK enters the two combustion chambers 2 and is combusted, and the turbine 3 is rotated by the exhaust gas. The exhaust gas of the turbine 3 is passed through the exhaust diffuser 4
f: After the pressure is restored, the sound is reduced by the silencer 5 and introduced into the gas phase reduction device 6 of the denitrification device. Reducing agents such as NHs and H2Oz are injected into the gas phase reduction device 6 from an NH3 injection device 7 and a H2O3 injection device 8. In reactor 9, NOx is NHs and H*
02 is reduced and reduced as shown in the equation below.
Ｈ２Ｏ，→２０）Ｉ
Ｎ）（３＋０Ｈ＝ＮＨｔ ＋Ｈ２Ｏ
Ｎ０十ＮＨ２＝Ｎ＋＋ ＋Ｈ，ｘＯ
ＮＯ＋ＮＯｘ ＋２ＮＨｓ →２Ｎｚ ＋３１（ｚＯ上
記の如き反応が行われた排気ガスは感温器１０内に入シ
冷却され、煙突１１から大気に放出される。H2O, →20)I N) (3+0H=NHt +H2O N0 ten NH2=N++ +H, xO NO+NOx +2NHs →2Nz +31(zO) The exhaust gas in which the above reaction has taken place enters the temperature sensor 10 and is cooled. It is released into the atmosphere from the chimney 11.
以上によシ、排気ガス中のＮＯＸは還元されるが、図示
する如く気相還元装置６、ＮＪＩｇ注入装置７、）（２
０，注入装置８および反応装置９等を必要とし、構造が
極めて複雑のものとなり、かつ高価、大型のものとなる
。更に、第３図に示すコンバインドプラントに上記脱硝
装置を利用する場合にはガスタービン３と次系統のボイ
ラ５１７７１の排気ダクト内に上記設備を必要とするた
め圧力損失が大となり、タービン効率を低下せしめる欠
点が生ずる。As described above, NOX in the exhaust gas is reduced, but as shown in the figure, the gas phase reduction device 6, the NJIg injection device 7, ) (2
0. It requires an injection device 8, a reaction device 9, etc., making the structure extremely complicated, expensive, and large. Furthermore, when the above denitrification equipment is used in the combined plant shown in Fig. 3, the above equipment is required in the exhaust duct of the gas turbine 3 and the boiler 51771 in the next system, resulting in a large pressure loss and reducing turbine efficiency. This results in disadvantages.
又、図示していないが、低ＮＯＸ燃焼器を用いて、排気
ガス中のＮＯＸを低減せしめると、上記の如＜ＣＯおよ
びＨＣの濃度が上昇し、これ等を酸化触媒等によシ反応
させて低減するには、従来技術では上記脱硝装置の如き
装置を必要とする不具合が生ずる。Although not shown in the figure, when a low NOX combustor is used to reduce NOX in exhaust gas, the concentration of CO and HC increases as described above, and these are caused to react with an oxidation catalyst. In order to reduce this, the conventional technology has a problem in that it requires a device such as the above-mentioned denitrification device.
本発明は、上記欠点等を解決するもので、その目的は、
ＮＯｘによって生ずる排気ガス中のＣＯおよびＨＣの濃
度を、簡便、安価の手段によシ圧力損失を生ずることな
く低減させる環境対策型ガスタービンを提供することに
ある。The present invention solves the above-mentioned drawbacks, and its purpose is to:
An object of the present invention is to provide an environmentally friendly gas turbine that reduces the concentration of CO and HC in exhaust gas caused by NOx by a simple and inexpensive means without causing pressure loss.
本発明は、上記目的を達成するために、ガスタービンと
ボイラおよび蒸気タービンの如き次系統との間に設けら
れ、排気ガスの圧力回復、整流および消音などをする排
気装置および排気通路内に、排気ガス中のＣｏおよびＨ
Ｃと反応する触媒を所望面積だけ塗布する箇所を設ける
と共に、上記排気装置および排気通路を、該排気装置お
よび排気通路内を上記排気ガスが通過する間に排気ガス
中の酸素により上記ＣＯおよびＨＣが酸化されるに必要
な容積を有するべく形成せしめる環境対策型ガスタービ
ンを特徴としたものである。In order to achieve the above object, the present invention provides an exhaust system and an exhaust passage that are provided between a gas turbine and a next system such as a boiler and a steam turbine, and that perform pressure recovery, rectification, and muffling of exhaust gas. Co and H in exhaust gas
In addition to providing a location where a desired area is coated with a catalyst that reacts with C, the exhaust system and exhaust passage are heated so that the CO and HC are removed by the oxygen in the exhaust gas while the exhaust gas passes through the exhaust system and the exhaust passage. The environmentally friendly gas turbine is designed to have a volume necessary for oxidation of the gas.
以下、本発明の実施例を図面に基づき説明する。 Embodiments of the present invention will be described below based on the drawings.
まず、本実施例の概要を説明する。First, an outline of this embodiment will be explained.
第３図のコンバインドプラントにおけるガスタービン３
と次系統の１つであるボイラ１２間には、排気装置１３
および排気通路１４が介設されている。Gas turbine 3 in the combined plant shown in Figure 3
An exhaust system 13 is installed between the boiler 12 and the boiler 12, which is one of the next systems.
and an exhaust passage 14 are provided.
又、圧縮機１とガスタービン１間には低ＮＯＸ燃焼器２
ａが介設される。In addition, a low NOx combustor 2 is installed between the compressor 1 and the gas turbine 1.
a is interposed.
後に詳説するが、排気装置１３内には、ア゛ウタシリン
ダ２０、インナシリンダ２１、ターニングバーン２３、
排気ダクト２５および高周波、低周波サイレンサバネル
２６．２７が形成され、排気ガスが接触し得る十分な面
積を有する箇所が設けられている。又図示しない排気通
路１４内も、排気ガスが接触し得る十分な面積が形成さ
れる。そこで排気装置１３および排気通路１４内にｃｏ
およびＨＣと反応する触媒、例えば酸化触媒を所望面積
だけ塗布する箇所を形成する。As will be explained in detail later, the exhaust system 13 includes an outer cylinder 20, an inner cylinder 21, a turning burn 23,
An exhaust duct 25 and high-frequency and low-frequency silencer panels 26, 27 are formed, and a portion having a sufficient area with which exhaust gas can come into contact is provided. Also, in the exhaust passage 14 (not shown), a sufficient area with which exhaust gas can come into contact is formed. Therefore, the exhaust system 13 and the exhaust passage 14 are
Then, a portion is formed where a desired area of a catalyst that reacts with HC, such as an oxidation catalyst, is applied.
ガスタービン３から排出される排気ガスの温度は５５０
２１１’程度で、ボイラ１２人口の温度もほぼ同温度で
あるため、排気カス中のＣＯおよびＨＣは、上記酸化触
媒と効率よく反応し酸化されて濃度が低減される。又、
排気ガス内には酸素がある程度（１５％）含まれている
ため、排気装置１３および排気通路１４を適宜の容積に
形成すれば、これ等を通過する際にこの酸素とＣＯおよ
びＨＣとが反応し、これ等を酸化すると共に熱量を発生
し、この発熱量が次系統に有効に使用される。なお、排
気装置１３および排気通路１４が上記酸化触媒を所望面
積だけ塗布し得るに十分の大きさがあれば、上記酸素と
ＣＯおよびＨＣが反応する容積は、普通必然的に十分に
確保される。The temperature of the exhaust gas discharged from the gas turbine 3 is 550
211' and the temperature of the boiler 12 is also approximately the same temperature, so the CO and HC in the exhaust gas efficiently react with the oxidation catalyst and are oxidized to reduce their concentration. or,
Since exhaust gas contains a certain amount of oxygen (15%), if the exhaust device 13 and exhaust passage 14 are formed to have appropriate volumes, this oxygen will react with CO and HC when passing through them. However, as these are oxidized, heat is generated, and this heat is effectively used in the next system. Note that if the exhaust device 13 and the exhaust passage 14 are large enough to apply the oxidation catalyst to a desired area, a sufficient volume for the reaction of the oxygen with CO and HC will normally be ensured. .
次に、本実施例を更に詳細に説明する。Next, this embodiment will be explained in more detail.
まず、低ＮＯＸ燃焼器２ａを有するコンバインドプラン
トの構成を第３図に示す。First, FIG. 3 shows the configuration of a combined plant having a low NOX combustor 2a.
圧縮機１とガスタービン３間には低ＮＯＸ燃焼器２ａが
介設される。ガスタービン３からの排気ガスは排気装置
１３および排気通路１４を通シ、次系統のボイラ１２に
導入される。排気ガスと熱交換して生じた蒸気は蒸気タ
ービン１５に導入され、発電機１６を回転せしめた後、
復水器１７で復水され、給水ポンプ１．８ Ｋより、再
びボイラー１２に戻入される。A low NOx combustor 2a is interposed between the compressor 1 and the gas turbine 3. Exhaust gas from the gas turbine 3 passes through an exhaust device 13 and an exhaust passage 14 and is introduced into a boiler 12 in the next system. The steam generated by exchanging heat with the exhaust gas is introduced into the steam turbine 15, rotates the generator 16, and then
The water is condensed in the condenser 17 and returned to the boiler 12 via the water supply pump 1.8K.
低ＮＯＸ燃焼器２ａにより燃焼ガスのＮＯＸは低減され
るが、上記の如く、ガスタービン３からの排気ガスのＣ
ＯおよびＨＣの濃度は上昇する。Although NOx in the combustion gas is reduced by the low NOx combustor 2a, as mentioned above, the carbon dioxide in the exhaust gas from the gas turbine 3 is reduced.
The concentration of O and HC increases.
第４図に排気装置１３の詳細を示す。FIG. 4 shows details of the exhaust device 13.
ガスタービン３からの排気ガスはタービンパケット１９
を通り、アウタシリンダ２０とインナバケツ）２１の間
を流れ、両者を連結するエアーホイルスラット２２の表
面を縫って内部に向って流れ、整流のために設けられた
ターニングベーン２３間を流れて排気ダクト２４の表面
に接触して流れる。又、複数列のターニングベーン２３
はパイプ２４により結合される。The exhaust gas from the gas turbine 3 is transferred to the turbine packet 19
The flow flows between the outer cylinder 20 and the inner bucket) 21, flows inward through the surface of the air foil slat 22 that connects the two, flows between the turning vanes 23 provided for rectification, and flows into the exhaust duct. It flows in contact with the surface of 24. Also, multiple rows of turning vanes 23
are connected by a pipe 24.
排気ダクト２４内には消音のだめの高周波サイレンサバ
ネル２６と低周波サイレンサバネル２７が多数列設けら
れ、排気ガスはこれ等に接しながら排気ダクト２５内を
流れる。次に、排気ガスは排気通路工４を通り、ボイラ
１２に導入される。Inside the exhaust duct 24, a large number of rows of high-frequency silencer panels 26 and low-frequency silencer panels 27 for muffling noise are provided, and the exhaust gas flows through the exhaust duct 25 while coming into contact with these panels. Next, the exhaust gas passes through the exhaust passageway 4 and is introduced into the boiler 12.
排気装置１３のアウタシリンダ２０．インナシリンダ２
１、ターニングベーン２３、排気ダクト２５、高周波サ
イレンサバネル２６および低周波サイレンサバネル２７
等の全部又は１部には酸化触媒が塗布される。又、排気
装置１３の上記塗布面積で不足の場合には排気通路１４
内にも酸化触媒が塗布される。これ等の所望の塗布面積
は後に説明する如く、２０ｏｏ−程度あればよく、この
面積は普通上記の排気装置１３により十分に確保される
。Outer cylinder 20 of exhaust device 13. Inner cylinder 2
1, turning vane 23, exhaust duct 25, high frequency silencer panel 26, and low frequency silencer panel 27
An oxidation catalyst is applied to all or part of the oxidation catalyst. In addition, if the above coating area of the exhaust device 13 is insufficient, the exhaust passage 14
An oxidation catalyst is also applied inside. As will be explained later, the desired coating area may be about 200 mm, and this area is usually sufficiently secured by the above-mentioned exhaust device 13.
又、排気ガス内には１５チ以上の酸素が含まれ、排気装
置１３および排気通路１４を排気ガスが通過する際に、
この酸素はｃｏおよびＨｃと反応し、これ等を酸化する
。Furthermore, the exhaust gas contains 15 or more oxygen, and when the exhaust gas passes through the exhaust device 13 and the exhaust passage 14,
This oxygen reacts with co and Hc and oxidizes them.
第５図において、横軸に上記酸化触媒の反応温度１）を
とり、縦軸にｃｏの反応率（チ）をとると、反応温度が
３５０ｔｌ’以上では反応率が９０チ以上の良好の値を
示すことがわかる。In Figure 5, if the horizontal axis represents the reaction temperature 1) of the oxidation catalyst and the vertical axis represents the reaction rate of co (chi), when the reaction temperature is 350 tl' or higher, the reaction rate is a good value of 90 tl or more. It can be seen that this shows that
一般に、ガスタービンの排気＋ｍＷは３５０ｃよυ高く
、排気装置１３のタービンパケット１９の出口温度は５
５０ｃ程度あり、又、ボイラ１２の入口温度も同程度の
温度に保持される。従って、排気装置１３および排気通
路１４内におりて、塗布された酸化触媒とＣＯガスは極
めてよい反応をすることになる。又、ＨＣについても図
示していないが同様な反応率が上げられる。Generally, the exhaust +mW of the gas turbine is as high as 350c, and the outlet temperature of the turbine packet 19 of the exhaust system 13 is 5
50c, and the inlet temperature of the boiler 12 is also maintained at about the same temperature. Therefore, the applied oxidation catalyst and CO gas react very well in the exhaust device 13 and the exhaust passage 14. Further, although not shown in the figure, a similar reaction rate can be achieved with HC.
次に、本実施例の作用を説明する。Next, the operation of this embodiment will be explained.
一般に、ＣＯ酸化に１吏用される酸化触媒は、１−の接
触面積に対し、５０ＯＮｍ３／ｈの排気ガス中のＣＯを
８０％ＣＯ２に酸化することが知られている。Generally, it is known that an oxidation catalyst used for CO oxidation oxidizes 50 ONm3/h of CO in exhaust gas to 80% CO2 based on a contact area of 1.
今、出力１０万ＫＷ級のガスタービンについて、ＣＯを
酸化するに必要な酸化触媒の塗布面積を下式により算出
する。上記ガスタービンの排気ガス重量流量Ｇは１．２
Ｘ１０”Ｋｇ／ｈで、定格負荷時にはその中に１０−の
ＣＯが含まれている。Now, for a gas turbine with an output of 100,000 kW, the application area of the oxidation catalyst required to oxidize CO is calculated using the following formula. The exhaust gas weight flow rate G of the above gas turbine is 1.2
X10''Kg/h, and at the rated load, 10- of CO is included in it.
排気ガス温度Ｔを５５０ｒ（８２３Ｘ）とすると排気ガ
ス流量Ｑは下式によりまる。When the exhaust gas temperature T is 550r (823X), the exhaust gas flow rate Q is determined by the following formula.
ここで、Ｇは排気ガス重量流量で１．２Ｘ１０’Ｋｇ／
ｈＸＰは排気ガス圧力で１．０３３＋０．０６３５（温
度換算） ＝ １．０９６５ ａｔａ 、 Ｒは気体定
数で標準状態１５Ｕ（２８８″Ｋ）における排気ガスＫ
ｙ／Ｎ ｍ ”のため下式によりまる。Here, G is the exhaust gas weight flow rate, 1.2X10'Kg/
hXP is exhaust gas pressure, 1.033 + 0.0635 (temperature conversion) = 1.0965 ata, R is gas constant, exhaust gas K in standard state 15U (288″K)
y/Nm'', it is determined by the following formula.
従って、必要の塗布面積Ｓは下式の如くなる。Therefore, the required coating area S is as shown in the following equation.
上式により、所望の塗布面積は上記の如く約２０００？
ｌｌ’あれば十分となり、排気ガス中のＣＯは排気装置
１３等の上記酸化触媒によりＣ０１１に酸化され、無害
となって、ボイラ１２側に送られる。According to the above formula, the desired coating area is approximately 2000?
ll' is sufficient, and the CO in the exhaust gas is oxidized to CO11 by the oxidation catalyst in the exhaust device 13 or the like, becomes harmless, and is sent to the boiler 12 side.
コンバインドプラント等において、排気装置１３および
排気通路１４は常設されるもので、本実施例は、単にこ
れ等に酸化触媒を塗布するＩＣけの簡単のもので、従来
技術の如く、特別の装置を必要としない。従って、簡便
、安価に実施することができ、圧力損失も生じない。In a combined plant or the like, the exhaust system 13 and the exhaust passage 14 are permanently installed, and this embodiment is simply a simple IC that coats these with an oxidation catalyst, and requires special equipment as in the prior art. do not need. Therefore, it can be carried out simply and inexpensively, and no pressure loss occurs.
次に、排気ガス中の酸素により、ＣＯが酸化される状態
を上記例の場合について説明する。部分負葡時とし、排
気ガス重量流量Ｇ１．２ＸＩＯ’１ＱＺｈ内に含まれる
ＣＯ排出ａ度を１５ｊ％ｍとする。Next, the state in which CO is oxidized by oxygen in the exhaust gas will be described with reference to the above example. It is assumed that the exhaust gas weight flow rate G1.2XIO'1QZh is partially negative, and the CO exhaust a degree contained in the exhaust gas weight flow rate G1.2XIO'1QZh is 15j%m.
ＣＯの流量Ｑｃｏは下式の如くなる。The flow rate Qco of CO is as shown in the equation below.
Ｑｃｏ ＝ＱＸ１５０ Ｘ １０”’ ＝ ２．６４Ｘ
１０’刈５０刈００−６＝ａ９ａ”／ｈ
従って、ＣＯの重量流量Ｇｃｏは次の如くなる。Qco = QX150 x 10”' = 2.64X
10' mowing 50 mowing 00-6=a9a''/h Therefore, the weight flow rate Gco of CO is as follows.
Ｇｃｏ ＝Ｑｃｏ Ｘ ｒ ＝３９６ Ｘｏ、４５５
＝ １８０１９／ ｈＣＯの酸素は下式の如く反応し２
４１０Ｋｃａｌ／Ｋｇの熱量を発する。すなわち
従って、Ｇｃｏの重量流量のＣＯの場合の発熱量Ｈは次
の如くなる。Gco = Qco X r = 396 Xo, 455
= 18019/ hCO oxygen reacts as shown in the formula below 2
It emits 410Kcal/Kg of heat. That is, the calorific value H in the case of CO at the weight flow rate of Gco is as follows.
Ｈ＝ ２４１０Ｘ Ｇｃｏ Ｘ ８０ ％ ＝ ３４７
０４０ Ｋｃａｌ／ｈ４０３ＫＷ
この発熱量Ｈがボイラ１２に使用され、この分だけター
ビン効率を向上することができる。H = 2410X Gco X 80% = 347
040 Kcal/h403KW This calorific value H is used in the boiler 12, and the turbine efficiency can be improved by this amount.
以上の如く、ガスタービン３とボイラ１２間忙酸化触媒
を塗布することにより、特別の装置を設けることなく、
ＣＯの酸化が行われ、かつ、発熱量Ｈによシ０．４チ程
度タービン効率を向上することができる。As described above, by applying a busy oxidation catalyst between the gas turbine 3 and the boiler 12, the
CO is oxidized, and the turbine efficiency can be improved by about 0.4 inches depending on the calorific value H.
又、■（Ｃについても同様に、酸化触媒によりＣ０２に
酸化することができ濃度低減される。すなわち、
ＣＨａ ＋ Ｏｚ→ＣＯｓ ＋４ｈＯ
の如くなる。Similarly, (C) can be oxidized to CO2 by an oxidation catalyst and its concentration is reduced. That is, CHa + Oz→COs + 4hO.
以上の説明によって明らかの如く、本発明によれば、簡
便、安価の手段により、排気ガス中のＣＯおよびＨＣの
濃度を低減すると共に、タービン効率を高めることがで
き、タービンの低ＮＯＸ化を図ることができる。As is clear from the above description, according to the present invention, the concentration of CO and HC in exhaust gas can be reduced by simple and inexpensive means, and the turbine efficiency can be increased, thereby reducing NOx in the turbine. be able to.
第１図は空燃比とＣＯおよびＮＯＸとの関係を示す線図
、第２図はＮＯＸを低減するための従来技術における脱
硝装置の構成図、第３図は本発明実施例の適用されるコ
ンバインドプラントの構成図、第４図は排気装置の断面
図、第５図は触媒の反応温度とＣＯ反応率との関係を示
す線図である。
１・・・圧縮機、２・・・燃焼器、２ａ・・・低ＮＯＸ
燃焼器、３・・・ガスタービン、４・・・排気ディフュ
ーザ、５・・・サイレンサ、６・・・気相還元装置、７
・・・ＮＨ３注入装置、８・・・Ｈ２Ｏ２注入装置、９
・・・反応装置、１０・・・感温器、１１・・・煙突、
１２・°・ボイラ、１３・・・排気装ｄ、１４・・・排
気通路、１５・・・蒸気タービン、工６・・・発電機、
１７・・・復水器、１８・・・給水ポンプ、１９・・・
タービンパケット、２０・・・アウタシリンダ、２１・
・・インナシリンダ、２２・・・エアーホイルストラッ
ト、２３・・・ターニングベーン、２４・・・パイプ、
２５・・・排気ダクト、２６・・・高周波サイレンサ、
２７・・・低周波サイレンサ。
千庁図Fig. 1 is a diagram showing the relationship between air-fuel ratio and CO and NOX, Fig. 2 is a block diagram of a conventional denitrification device for reducing NOx, and Fig. 3 is a diagram showing a combination to which an embodiment of the present invention is applied. FIG. 4 is a sectional view of the exhaust system, and FIG. 5 is a diagram showing the relationship between catalyst reaction temperature and CO reaction rate. 1...Compressor, 2...Combustor, 2a...Low NOX
Combustor, 3... Gas turbine, 4... Exhaust diffuser, 5... Silencer, 6... Gas phase reduction device, 7
...NH3 injection device, 8...H2O2 injection device, 9
... Reactor, 10... Temperature sensor, 11... Chimney,
12.° Boiler, 13... Exhaust system d, 14... Exhaust passage, 15... Steam turbine, Engineering 6... Generator,
17...Condenser, 18...Water pump, 19...
Turbine packet, 20... Outer cylinder, 21...
... Inner cylinder, 22 ... Air foil strut, 23 ... Turning vane, 24 ... Pipe,
25...Exhaust duct, 26...High frequency silencer,
27...Low frequency silencer. Thousand offices map
Claims (1)
から次系続開に排気ダクト、サイレンサ。 ディフューザの如き排気装置および排気通路を有する環
境対策型ガスタービンにおいて、上記排気装置および排
気通路にＣＯおよびＨｅと反応する触媒を所望面積だけ
塗布する箇所を設けると共に、上記排気装置および排気
通路が、上記ＣＯおよびＨＣと排気ガス中の酸素が反応
し得る容積を有するように形成されることを特徴とする
環境対米型ガスタービン。 ２、上記ガスタービンが、上記次系統にボイラおよび蒸
気タービンを有するコンバインドプラントに用いられる
ものであることを特徴とする特許請求の範囲第１項に記
載の環境対策型ガスターヒフ６[Claims] 1. A low NOx combustor is provided, and an exhaust duct and silencer are connected to the next system from the exhaust side of the turbine. In an environment-friendly gas turbine having an exhaust device such as a diffuser and an exhaust passage, the exhaust device and the exhaust passage are provided with a portion where a desired area is coated with a catalyst that reacts with CO and He, and the exhaust device and the exhaust passage are An environmentally friendly gas turbine, characterized in that it is formed to have a volume that allows the CO and HC to react with oxygen in the exhaust gas. 2. The environmentally friendly gas turbine according to claim 1, wherein the gas turbine is used in a combined plant having a boiler and a steam turbine in the secondary system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59024390A JPH0617651B2 (en) | 1984-02-14 | 1984-02-14 | Environmentally friendly gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59024390A JPH0617651B2 (en) | 1984-02-14 | 1984-02-14 | Environmentally friendly gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169618A true JPS60169618A (en) | 1985-09-03 |
| JPH0617651B2 JPH0617651B2 (en) | 1994-03-09 |
Family
ID=12136835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59024390A Expired - Lifetime JPH0617651B2 (en) | 1984-02-14 | 1984-02-14 | Environmentally friendly gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617651B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH679236A5 (en) * | 1989-10-31 | 1992-01-15 | Asea Brown Boveri | Open-cycle gas-turbine - has ambient air injector in exhaust pipe upstream of catalytic unit |
| EP1507073A1 (en) * | 2003-08-12 | 2005-02-16 | J. Eberspächer GmbH Co. KG | Engine exhaust system |
| AT515277B1 (en) * | 2013-12-19 | 2018-12-15 | Ift Gmbh | catalytic converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426432U (en) * | 1977-07-22 | 1979-02-21 |
-
1984
- 1984-02-14 JP JP59024390A patent/JPH0617651B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426432U (en) * | 1977-07-22 | 1979-02-21 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH679236A5 (en) * | 1989-10-31 | 1992-01-15 | Asea Brown Boveri | Open-cycle gas-turbine - has ambient air injector in exhaust pipe upstream of catalytic unit |
| EP1507073A1 (en) * | 2003-08-12 | 2005-02-16 | J. Eberspächer GmbH Co. KG | Engine exhaust system |
| DE10337336B4 (en) * | 2003-08-12 | 2011-06-22 | J. Eberspächer GmbH & Co. KG, 73730 | Exhaust system for an internal combustion engine |
| AT515277B1 (en) * | 2013-12-19 | 2018-12-15 | Ift Gmbh | catalytic converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617651B2 (en) | 1994-03-09 |
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