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JPS63259324A - Combustor for use in gas turbine - Google Patents

Combustor for use in gas turbine

Info

Publication number
JPS63259324A
JPS63259324A JP9321287A JP9321287A JPS63259324A JP S63259324 A JPS63259324 A JP S63259324A JP 9321287 A JP9321287 A JP 9321287A JP 9321287 A JP9321287 A JP 9321287A JP S63259324 A JPS63259324 A JP S63259324A
Authority
JP
Japan
Prior art keywords
combustor
air
compressed air
gas turbine
heated
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
Application number
JP9321287A
Other languages
Japanese (ja)
Other versions
JPH066906B2 (en
Inventor
Toshio Abe
安部 利男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP9321287A priority Critical patent/JPH066906B2/en
Publication of JPS63259324A publication Critical patent/JPS63259324A/en
Publication of JPH066906B2 publication Critical patent/JPH066906B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To perform the stable combustion in the combustor at the time of using a low calory gas fuel by supplying compressed air which contains no steam directly discharged from a compressor to a primary combustion chamber within the combustor. CONSTITUTION:Air A pressurized by a low-tension compressor 2 is cooled with water W in an intermediate cooler 6, and is introduced into a high-tension compressor 3. Approximately 80% of the compressed air A is sent to a heat exchanger 7 of a type directly contacting water W and is formed into compressed air containing steam. The compressed air is heated by a heat exchanger 8 heated by a waste gas E of a gas turbine, and thereafter is supplied to the combustor 4 as secondary air. Approximately 20% of the compressed air A is not passed through but is heated by a heat exchanger 9 heated by the waste gas E, and thereafter is supplied to a primary combustion region 4A to which a fuel F for the combustor 4 is injected as primary air. Accordingly, even a low-calory gas can be burned stably.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は主として低カロリーガスを燃料として安定した
燃焼を行なうガスタービン用燃焼器に関するものである
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a combustor for a gas turbine that performs stable combustion mainly using low-calorie gas as fuel.

〔従来技術〕[Prior art]

近年、低カロリーガスを燃料として燃焼器に使用してガ
スタービンを駆動する際に、その燃焼器内に水蒸気をた
くさん含んだ燃焼用空気を供給することにより、空気と
水蒸気とからなる燃焼空気が著しく増量して、ガスター
ビン発電システムの出力を増大できることが知られてい
る。
In recent years, when low-calorie gas is used as fuel in a combustor to drive a gas turbine, by supplying combustion air containing a lot of water vapor into the combustor, the combustion air consisting of air and water vapor is It is known that the output of gas turbine power generation systems can be increased significantly.

このような従来のガスタービン発電システムでは、水又
は水蒸気を多量に用いてコンプレッサの中間冷却と水蒸
気による排熱回収を行い、発電効率を高めている。
In such a conventional gas turbine power generation system, a large amount of water or steam is used to perform intermediate cooling of the compressor and exhaust heat recovery using the steam to improve power generation efficiency.

しかしながら、燃焼用空気流量の10%以上の水分を含
む燃焼空気を、低カロリーガス燃料を使用する燃焼器内
に供給した場合、特に−火燃焼領域で安定した燃焼が得
られないばかりか、失火してしまうという問題がある。
However, when combustion air containing moisture that is 10% or more of the combustion air flow rate is supplied into a combustor that uses low-calorie gas fuel, not only is stable combustion not achieved especially in the -flame combustion region, but also misfires occur. The problem is that it does.

〔発明の目的〕[Purpose of the invention]

本発明は前記のごとき従来の問題点を解消するためにな
されたものであり、燃焼器内で特に燃焼のために大切な
一次燃焼領域には、コンプレッサから吐出されて加熱さ
れた蒸気を含まない燃焼用空気を供給することにより、
低カロリーガス使用の場合でも安定した燃焼が得られる
ガスタービン用燃焼器を提供することを目的としている
The present invention was made in order to solve the above-mentioned conventional problems, and the primary combustion area in the combustor, which is particularly important for combustion, does not contain heated steam discharged from the compressor. By supplying combustion air,
An object of the present invention is to provide a combustor for a gas turbine that can provide stable combustion even when using low-calorie gas.

〔発明の構成〕[Structure of the invention]

上記の目的を達成するため、本発明にかかるガスタービ
ン用燃焼器は、コンプレ・7すから吐出された後、水蒸
気を含ませた圧縮空気を燃焼器内に供給しているガスタ
ービン用の燃焼器内の一次燃焼領域に、上記コンプレッ
サーから直接吐出された、水蒸気を含まない圧縮空気を
供給するように構成したものである。
In order to achieve the above object, the combustor for a gas turbine according to the present invention supplies compressed air containing water vapor into the combustor after being discharged from a compressor. It is configured to supply compressed air containing no water vapor, which is directly discharged from the compressor, to the primary combustion area within the vessel.

即ち、本発明のガスタービン用燃焼器器は、コンプレッ
サから吐出された後、水との直接接触式の熱交換器等を
通して水蒸気を含ませた圧縮空気を燃焼用空気や冷却用
空気及び希釈空気として燃焼器内に供給しているガスタ
ービン用の燃焼器内の一次燃焼領域には、コンプレッサ
から吐出されたままの水蒸気を含まない圧縮空気をガス
タービンからの排出ガスによる熱交換器を介して加熱し
た後、−火燃焼空気として供給するものである。
That is, in the gas turbine combustor of the present invention, after being discharged from a compressor, the compressed air impregnated with water vapor is passed through a direct contact type heat exchanger with water, etc., and then converted into combustion air, cooling air, and dilution air. The primary combustion area in the combustor for a gas turbine is supplied with compressed air that does not contain water vapor as it is discharged from the compressor through a heat exchanger using exhaust gas from the gas turbine. After heating, it is supplied as combustion air.

そして−火燃焼領域では水蒸気を含まない加熱された空
気を供給して低カロリー燃料でも安定した燃焼が得られ
、二次空気、冷却用空気及び希釈空気には蒸気を多量に
含む圧縮空気を供給することにより、燃焼器内の内筒な
どの冷却効果及びタービンの入口温度の調整効果をはだ
すと共に、空気に水蒸気を混合することにより風量を増
大してタービン出力を増大させることができる。
- In the fire combustion area, heated air that does not contain water vapor is supplied to achieve stable combustion even with low-calorie fuel, and compressed air containing a large amount of steam is supplied to the secondary air, cooling air, and dilution air. By doing so, it is possible to achieve a cooling effect for the inner cylinder in the combustor, etc. and an effect to adjust the temperature at the inlet of the turbine, and also increase the air volume by mixing water vapor with the air, thereby increasing the turbine output.

〔実 施 例〕〔Example〕

以下図面を参照して本発明の詳細な説明するが、図面は
本発明の一実施例におけるガスタービン用燃焼器の概略
系統図である。
The present invention will be described in detail below with reference to the drawings, which are schematic diagrams of a gas turbine combustor in one embodiment of the present invention.

図において、ガスタービンlと低圧コンプレフサ2及び
高圧コンプレッサ3との間にはこのガスタービン1に燃
焼ガスを供給する燃焼器4が配設され、更にガスタービ
ン1にはこれにより駆動される発電機5が設けられてい
る。
In the figure, a combustor 4 that supplies combustion gas to the gas turbine 1 is disposed between a gas turbine 1, a low-pressure compressor 2, and a high-pressure compressor 3, and the gas turbine 1 also has a generator driven by the combustor 4. 5 is provided.

低圧コンプレフサ2と高圧コンプレッサ3との間に、低
圧コンプレッサ2で加圧され高圧コンプレッサ3に導入
される空気Aを水Wで冷却する中間冷却器6が設けられ
、高圧コンプレッサ3からの圧縮空気の約80%は水W
との直接接触式の熱交換器7へ送られ、ここで水蒸気を
含む圧縮空気となり、ガスタービン1からの排ガスEで
加熱される熱交換器8で加熱された後、二次空気、冷却
用空気及び希釈空気として燃焼器4内に供給される。
An intercooler 6 is provided between the low-pressure compressor 2 and the high-pressure compressor 3, and cools the air A pressurized by the low-pressure compressor 2 and introduced into the high-pressure compressor 3 with water W. Approximately 80% is water
The air is sent to a direct contact type heat exchanger 7, where it becomes compressed air containing water vapor, and after being heated in a heat exchanger 8, which is heated with exhaust gas E from the gas turbine 1, secondary air is used for cooling. It is supplied into the combustor 4 as air and dilution air.

そこで、本実施例では、高圧コンプレッサ3から吐出さ
れた圧縮空気の約20%を熱交換器7を通さず、直接ガ
スタービン1からの排ガスEで加熱される熱交換器9で
加熱した後、燃焼器4の燃料Fが噴射される一次燃焼領
域4Aに一次燃焼空気として供給されている。
Therefore, in this embodiment, approximately 20% of the compressed air discharged from the high-pressure compressor 3 is heated directly in the heat exchanger 9 heated by the exhaust gas E from the gas turbine 1 without passing through the heat exchanger 7. The primary combustion area 4A in which the fuel F of the combustor 4 is injected is supplied as primary combustion air.

上記のごときガスタービン燃焼器で、その燃焼特性を決
定するのは一次燃焼領域4Aであり、従来のシステムで
は高圧コンプレフサ3から吐出した圧縮空気の全量が水
Wとの直接接触式の熱交換器7に流入し、水蒸気を多量
に含む燃焼空気となり、燃焼器4内に導入され、−火燃
焼領域4Aでの燃焼の安定性を欠いていたのに対し、本
発明では一次燃焼領域には水蒸気を含まない一次燃焼空
気が供給されている。
In the gas turbine combustor as described above, it is the primary combustion region 4A that determines its combustion characteristics, and in conventional systems, the entire amount of compressed air discharged from the high-pressure compressor 3 comes into contact with water W through a direct contact type heat exchanger. 7, the combustion air becomes combustion air containing a large amount of water vapor, and is introduced into the combustor 4, which lacks combustion stability in the combustion area 4A. Primary combustion air is supplied that does not contain

一方、−火燃焼領域4A以外の燃焼器4内への空気は、
直接接触式の熱交換器7を経由するために多量の水蒸気
を含んでおり、燃焼器4内の内筒を効率良く冷却すると
共に、タービン入口温度を適度に調整できる。
On the other hand, the air flowing into the combustor 4 other than the -flame combustion area 4A is
Since it passes through the direct contact type heat exchanger 7, it contains a large amount of water vapor, which allows the inner cylinder in the combustor 4 to be efficiently cooled and the turbine inlet temperature to be appropriately adjusted.

〔発明の効果〕〔Effect of the invention〕

以上に説明したごとく、本発明のガスタービン燃焼器で
は、燃焼上張も大切な一次燃焼領域には水蒸気を含まな
い燃焼空気が供給されるので、低カロリーガスでも安定
して燃焼できるという効果があり、また、ガスタービン
の排熱を燃焼用空気及び水蒸気によって回収することに
よっても発電効率が向上するという効果もある。
As explained above, in the gas turbine combustor of the present invention, combustion air that does not contain water vapor is supplied to the primary combustion region where combustion is important, so even low-calorie gas can be stably combusted. Furthermore, recovering the exhaust heat of the gas turbine using combustion air and steam also has the effect of improving power generation efficiency.

一方、水または水蒸気を多量に含む空気を燃焼器内に供
給しても、起動から定格運転までの広範囲にわたる安定
した燃焼ができ、低NOxの燃焼ができるという利点が
ある。
On the other hand, even if air containing a large amount of water or steam is supplied into the combustor, there are advantages in that stable combustion can be achieved over a wide range from startup to rated operation, and low NOx combustion can be achieved.

更に、水蒸気を含む空気を供給することによリ、燃焼器
内の内筒が低温に保持でき、部品寿命の延長が図れると
いう利点がある。
Furthermore, by supplying air containing water vapor, the inner cylinder in the combustor can be maintained at a low temperature, which has the advantage of extending the life of the parts.

本発明は主として中・低カロリーガスを燃料として使用
するガスタービン用燃焼器に対して有効に適用すること
ができる。
The present invention can be effectively applied to a gas turbine combustor that mainly uses medium/low calorie gas as fuel.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例におけるガスタービン用燃焼器
の概略系統図である。 1・・・ガスタービン、2・・・低圧コンプレッサ、3
゛°°高圧コンプレツサ、4・・・燃焼器、4A・・・
−火燃焼領域、7・・・水との直接接触式の熱交換器、
9・・・排ガスで加熱される熱交換器、A・・・空気、
E・・・排ガス、W・・・水。
The drawing is a schematic diagram of a gas turbine combustor in one embodiment of the present invention. 1... Gas turbine, 2... Low pressure compressor, 3
゛°°High pressure compressor, 4... combustor, 4A...
- fire combustion area, 7... direct contact heat exchanger with water;
9... Heat exchanger heated by exhaust gas, A... Air,
E...Exhaust gas, W...Water.

Claims (1)

【特許請求の範囲】[Claims] コンプレッサから吐出された後、水蒸気を含ませた圧縮
空気を燃焼器内に供給しているガスタービン用の燃焼器
内の一次燃焼領域に、上記コンプレッサーから直接吐出
された、水蒸気を含まない圧縮空気を供給してなるガス
タービン用燃焼器。
Compressed air that does not contain water vapor and is directly discharged from the compressor into the primary combustion area of the combustor for a gas turbine that supplies compressed air containing water vapor to the combustor after being discharged from the compressor. A combustor for gas turbines that supplies
JP9321287A 1987-04-17 1987-04-17 Gas turbine power generator Expired - Lifetime JPH066906B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9321287A JPH066906B2 (en) 1987-04-17 1987-04-17 Gas turbine power generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9321287A JPH066906B2 (en) 1987-04-17 1987-04-17 Gas turbine power generator

Publications (2)

Publication Number Publication Date
JPS63259324A true JPS63259324A (en) 1988-10-26
JPH066906B2 JPH066906B2 (en) 1994-01-26

Family

ID=14076258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9321287A Expired - Lifetime JPH066906B2 (en) 1987-04-17 1987-04-17 Gas turbine power generator

Country Status (1)

Country Link
JP (1) JPH066906B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011508139A (en) * 2007-12-21 2011-03-10 グリーン パートナーズ テクノロジー ホールディングス ゲゼルシャフト ミット ベシュレンクテル ハフツング Gas turbine system and method employing vaporizable liquid supply apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011508139A (en) * 2007-12-21 2011-03-10 グリーン パートナーズ テクノロジー ホールディングス ゲゼルシャフト ミット ベシュレンクテル ハフツング Gas turbine system and method employing vaporizable liquid supply apparatus

Also Published As

Publication number Publication date
JPH066906B2 (en) 1994-01-26

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