JP2002129977A - Gas turbine equipment - Google Patents
Gas turbine equipmentInfo
- Publication number
- JP2002129977A JP2002129977A JP2000320228A JP2000320228A JP2002129977A JP 2002129977 A JP2002129977 A JP 2002129977A JP 2000320228 A JP2000320228 A JP 2000320228A JP 2000320228 A JP2000320228 A JP 2000320228A JP 2002129977 A JP2002129977 A JP 2002129977A
- Authority
- JP
- Japan
- Prior art keywords
- turbine
- steam
- gas
- exhaust
- compressor
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
- F01K21/042—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas pure steam being expanded in a motor somewhere in the plant
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧縮機、燃焼器及
びタービンからなるガスタービン設備に関し、排出ガス
性能の悪化と効率低下の抑制を企図したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine system comprising a compressor, a combustor, and a turbine, and aims at suppressing deterioration of exhaust gas performance and reduction of efficiency.
【０００２】[0002]
【従来の技術】エネルギー資源の有効利用と経済性の観
点から、発電設備（発電プラント）では様々な高効率化
が図られている。ガスタービン設備と蒸気タービンを組
み合わせたタービン設備（複合発電プラント）もその一
つである。複合発電プラントでは、ガスタービン設備か
らの高温の排気ガスが排熱回収ボイラに送られ、排熱回
収ボイラ内で過熱ユニットを介して蒸気を発生させ、発
生した蒸気を蒸気タービンに送って蒸気タービンで仕事
をするようになっている。排熱回収ボイラに送られて熱
回収された排気ガスは、二酸化炭素を分離する装置や窒
素酸化物（ＮＯｘ）を除去する触媒装置等を介して有害
成分が除去された状態で煙突から大気に放出されてい
る。2. Description of the Related Art From the viewpoints of effective use of energy resources and economic efficiency, various high efficiencies have been achieved in power generation facilities (power generation plants). A turbine facility (combined power plant) combining a gas turbine facility and a steam turbine is one of them. In a combined cycle power plant, high-temperature exhaust gas from a gas turbine facility is sent to an exhaust heat recovery boiler, and steam is generated in the exhaust heat recovery boiler via a superheating unit. I'm working from here. Exhaust gas sent to an exhaust heat recovery boiler and recovered in heat is discharged from the chimney to the atmosphere with harmful components removed through a device that separates carbon dioxide and a catalytic device that removes nitrogen oxides (NOx). Has been released.
【０００３】[0003]
【発明が解決しようとする課題】従来のガスタービン設
備では、有害成分を除去する装置を付加する等して排気
ガス性能を維持している。しかし、有害成分を除去する
装置等に動力が使われて発電効率には限界があった。こ
のため、排気ガス性能を悪化させることなく出力の増大
を図ることが従来のガスタービン設備での課題となって
いるのが現状である。In conventional gas turbine equipment, exhaust gas performance is maintained by adding a device for removing harmful components. However, power is used in a device for removing harmful components and the like, and power generation efficiency is limited. Therefore, at present, it is a problem in conventional gas turbine equipment to increase the output without deteriorating the exhaust gas performance.
【０００４】本発明は上記状況に鑑みてなされたもの
で、排出ガス性能を悪化させることなく効率低下を抑制
することができるガスタービン設備を提供することを目
的とする。[0004] The present invention has been made in view of the above circumstances, and has as its object to provide a gas turbine facility capable of suppressing a decrease in efficiency without deteriorating exhaust gas performance.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本発明のガスタービン設備の構成は、圧縮機で加圧し
た空気と燃料とが導入され導入された空気と燃料を燃焼
させて作動流体を発生させる燃焼器を備え、燃焼器から
の作動流体を膨張させて仕事を行うタービンを有し、タ
ービンの排気を圧縮機の入口側に導入する排気導入路を
備えたことを特徴とする。In order to achieve the above object, the construction of the gas turbine equipment according to the present invention is such that air and fuel pressurized by a compressor are introduced and the introduced air and fuel are burned. It has a combustor that generates a fluid, has a turbine that expands the working fluid from the combustor to perform work, and has an exhaust introduction path that introduces exhaust gas from the turbine to the inlet side of the compressor. .
【０００６】そして、蒸気発生手段を有する排気経路を
排気導入路から分岐して設け、蒸気発生手段で発生した
蒸気が作動流体となって投入される蒸気タービンを備
え、蒸気タービンの排出蒸気でタービンの高温部品を冷
却する冷却路を設ける一方、蒸気タービンの排出蒸気を
燃焼器に導入する蒸気流路を設けたことを特徴とする。An exhaust path having steam generating means is provided branching from the exhaust introducing path, and a steam turbine is provided into which steam generated by the steam generating means is supplied as a working fluid. A cooling passage for cooling the high-temperature components, and a steam passage for introducing the steam discharged from the steam turbine to the combustor.
【０００７】また、蒸気発生手段で熱回収されたタービ
ンの排気が導入される低圧タービンを備えると共に、低
圧タービンの排気を凝縮する凝縮手段を備え、凝縮手段
で凝縮された水を蒸気発生手段に給水する給水手段を設
ける一方、凝縮手段での不凝縮ガスを外部に排出させる
ガス排出手段を設けたことを特徴とする。In addition, a low-pressure turbine into which the exhaust of the turbine heat recovered by the steam generating means is introduced, and a condensing means for condensing the exhaust of the low-pressure turbine are provided, and water condensed by the condensing means is supplied to the steam generating means. A water supply means for supplying water is provided, and a gas discharging means for discharging non-condensable gas in the condensing means to the outside is provided.
【０００８】また、蒸気発生手段で熱回収されたタービ
ンの排気の一部の所定量を排気導入路に導入する温度調
整流路を備えたことを特徴とする。また、圧縮機を冷却
する中間冷却手段を備えたことを特徴とする。また、燃
焼器に酸素を導入する酸素導入手段を備えたことを特徴
とする。[0008] Further, a temperature control flow path for introducing a predetermined amount of a part of the exhaust gas of the turbine recovered by the steam generating means into the exhaust gas introduction path is provided. Further, an intermediate cooling means for cooling the compressor is provided. Further, the combustor is provided with oxygen introducing means for introducing oxygen.
【０００９】[0009]
【発明の実施の形態】図１には本発明の一実施形態例に
係るガスタービン設備を備えた複合発電プラントの概略
系統を示してある。FIG. 1 shows a schematic system of a combined cycle power plant equipped with gas turbine equipment according to an embodiment of the present invention.
【００１０】図に示すように、複合発電プラントは、ガ
スタービン設備１０、排熱回収ボイラ８及び蒸気タービ
ン１５を主な構成要素として構築されて、エネルギーが
回収されて発電が行われる。As shown in the figure, the combined cycle power plant is constructed with gas turbine equipment 10, exhaust heat recovery boiler 8 and steam turbine 15 as main components, and energy is recovered to generate power.
【００１１】ガスタービン設備１０は圧縮機１及び燃焼
器２及びタービン３を有している。圧縮機１及びタービ
ン３は同軸状に設けられ、発電機４が連結されている。
圧縮機１には空気導入経路５から外部の空気が導入さ
れ、圧縮機１で圧縮された空気は燃料fc（例えばメタ
ン）と共に燃焼器２に導入される。燃焼器２の燃焼ガス
はタービン３で膨張され、タービン３の作動によりによ
り発電が行われる。タービン３の排気経路６にはタービ
ン３の排気の一部を空気導入経路５（圧縮機１側）に導
入する排気導入路７が備えられている。The gas turbine facility 10 has a compressor 1, a combustor 2, and a turbine 3. The compressor 1 and the turbine 3 are provided coaxially, and the generator 4 is connected.
External air is introduced into the compressor 1 from the air introduction path 5, and the air compressed by the compressor 1 is introduced into the combustor 2 together with fuel fc (for example, methane). The combustion gas of the combustor 2 is expanded in the turbine 3, and power is generated by the operation of the turbine 3. The exhaust path 6 of the turbine 3 is provided with an exhaust introduction path 7 for introducing a part of the exhaust gas of the turbine 3 to the air introduction path 5 (compressor 1 side).
【００１２】排気経路６には蒸気発生手段としての排熱
回収ボイラ８が設けられ、排熱回収ボイラ８で熱回収さ
れたタービン３の排気は排気流路２３から低圧タービン
９に導入されて膨張される。低圧タービン９には発電機
１１が設けられ、低圧タービン９の作動により発電が行
われる。An exhaust heat recovery boiler 8 as steam generating means is provided in the exhaust path 6, and the exhaust gas of the turbine 3 recovered by the exhaust heat recovery boiler 8 is introduced from the exhaust passage 23 to the low-pressure turbine 9 and expanded. Is done. A generator 11 is provided in the low-pressure turbine 9, and power is generated by the operation of the low-pressure turbine 9.
【００１３】低圧タービン９の排気ガスは凝縮手段とし
ての復水器１２に送られて復水（凝縮）され、燃焼によ
り発生した排ガス中の余分な水が排出された後、給水手
段としての給水ポンプ１３により排熱回収ボイラ８に加
圧給水される。復水器１２での不凝縮ガスはガス排出手
段としてのガス排出圧縮機２１により外部に排出され
る。尚、起動時には給水ポンプ１３の上流側に設けられ
た起動時給水手段２２により外部から排熱回収ボイラ８
に給水される。The exhaust gas of the low-pressure turbine 9 is sent to a condenser 12 as condensing means and condensed (condensed). After excess water in exhaust gas generated by combustion is discharged, water is supplied as water supplying means. The pump 13 supplies pressurized water to the exhaust heat recovery boiler 8. The non-condensable gas in the condenser 12 is discharged to the outside by a gas discharge compressor 21 as gas discharge means. In addition, at the time of startup, the exhaust heat recovery boiler 8 is externally supplied by a startup water supply means 22 provided upstream of the water supply pump 13.
Water is supplied to
【００１４】排熱回収ボイラ８では加圧給水が過熱され
て蒸気が発生し、発生した蒸気は蒸気導入路１４から蒸
気タービン１５に導入されて膨張される。蒸気タービン
１５には発電機１６が設けられ、蒸気タービン１５の作
動により発電が行われる。In the exhaust heat recovery boiler 8, the pressurized feed water is superheated to generate steam, and the generated steam is introduced into the steam turbine 15 from the steam introduction path 14 and expanded. A power generator 16 is provided in the steam turbine 15, and power is generated by the operation of the steam turbine 15.
【００１５】蒸気タービン１５の蒸気流路としての蒸気
排出路１７は燃焼器２につながると共に、蒸気排出路１
７から分岐してタービン３の高温部品（静翼等の構成部
品）の冷却路１８が設けられている。蒸気タービン１５
の排気は蒸気排出路１７から燃焼器２に導入されると共
に、冷却路１８を経てタービン３の高温部品に送られ、
高温部品を冷却した後タービン３のガスパス中にシール
として混入される。また、冷却路１８の蒸気の一部が回
収路１９で回収されて燃焼器２に送られ、燃焼ガスと混
合される。A steam discharge passage 17 as a steam flow passage of the steam turbine 15 is connected to the combustor 2 and is connected to the steam discharge passage 1.
7, a cooling path 18 is provided for a high-temperature component (a component such as a stationary blade) of the turbine 3. Steam turbine 15
Is introduced into the combustor 2 from the steam discharge passage 17 and sent to the high-temperature components of the turbine 3 through the cooling passage 18.
After cooling the high-temperature components, they are mixed into the gas path of the turbine 3 as a seal. Further, a part of the steam in the cooling passage 18 is collected in the collecting passage 19 and sent to the combustor 2 to be mixed with the combustion gas.
【００１６】排熱回収ボイラ８で熱回収されたタービン
３の排気の一部が導入される温度調整路２４が排気流路
２３から分岐して設けられ、温度調整路２４は排気導入
路７につながっている。温度調整路２４には温度調整弁
２５が設けられ、所定量の排気が排気導入路７に導入さ
れて圧縮機１に戻される排気の温度が所定温度に調整さ
れる。温度調整路２４の合流部の上流の排気導入路７に
は流量調整弁２６が設けられ、流量調整弁２６により圧
縮機１に戻される排気量が調整される。A temperature control path 24 into which a part of the exhaust gas of the turbine 3 heat recovered by the exhaust heat recovery boiler 8 is introduced is provided branching from the exhaust flow path 23. linked. A temperature adjustment valve 25 is provided in the temperature adjustment path 24, and a predetermined amount of exhaust gas is introduced into the exhaust gas introduction path 7 and the temperature of the exhaust gas returned to the compressor 1 is adjusted to a predetermined temperature. A flow control valve 26 is provided in the exhaust introduction path 7 upstream of the junction of the temperature control path 24, and the amount of exhaust returned to the compressor 1 is adjusted by the flow control valve 26.
【００１７】また、圧縮機１には排気導入路７から高温
の排気の一部が戻されて導入されるため、翼等を冷却す
るための中間冷却手段としての中間冷却器２７が設けら
れている。圧縮機１の途中段からから空気（流体）の一
部が抽気され、抽気された空気が中間冷却器２７で冷却
された後圧縮機１に戻されて翼等が冷却される。中間冷
却器２７の冷却媒体は、複合発電プラント中における流
体の圧力や温度に応じて任意の蒸気等の流体が適宜用い
られる。尚、図２に示すように、圧縮機１を低圧圧縮機
１ａと高圧圧縮機１ｂとで構成し、低圧圧縮機１ａの排
気（圧縮空気）を中間冷却器２７で冷却した後高圧圧縮
機１ｂに導入する構成とすることも可能である。Since a part of the high-temperature exhaust gas is returned to the compressor 1 from the exhaust gas introduction path 7 and introduced therein, an intermediate cooler 27 is provided as an intermediate cooling means for cooling the blades and the like. I have. Part of the air (fluid) is extracted from the middle stage of the compressor 1, and the extracted air is cooled by the intercooler 27 and then returned to the compressor 1 to cool the blades and the like. As a cooling medium of the intercooler 27, any fluid such as steam is appropriately used according to the pressure and temperature of the fluid in the combined cycle power plant. As shown in FIG. 2, the compressor 1 is composed of a low-pressure compressor 1a and a high-pressure compressor 1b, and the exhaust (compressed air) of the low-pressure compressor 1a is cooled by an intermediate cooler 27 and then the high-pressure compressor 1b. It is also possible to adopt a configuration to be introduced.
【００１８】上記構成のガスタービン設備１０を備えた
複合発電設備では、セミクローズドサイクルが構築され
ている。In the combined cycle power plant equipped with the gas turbine facility 10 having the above configuration, a semi-closed cycle is constructed.
【００１９】上述した複合発電設備では、圧縮機１から
の圧縮空気が燃料fcと共に燃焼器２に導入され、燃焼器
２の燃焼ガスはタービン３で膨張されてタービン３を作
動させる。タービン３の排気は排気経路６から排熱回収
ボイラ８に送られ、熱回収された後低圧タービン９に導
入される。低圧タービン９の排気は復水器１２で復水さ
れ、凝縮水が給水ポンプ１３で排熱回収ボイラ８に圧送
される。不凝縮ガスはガス排出圧縮機２１で圧縮されて
排出され、また、燃焼により発生した余分な水(H2O) が
排出される。In the above-described combined power generation facility, the compressed air from the compressor 1 is introduced into the combustor 2 together with the fuel fc, and the combustion gas in the combustor 2 is expanded by the turbine 3 to operate the turbine 3. The exhaust gas of the turbine 3 is sent from the exhaust path 6 to the exhaust heat recovery boiler 8, where the heat is recovered, and then introduced into the low-pressure turbine 9. The exhaust gas of the low-pressure turbine 9 is condensed by the condenser 12, and the condensed water is pumped by the water supply pump 13 to the exhaust heat recovery boiler 8. The non-condensable gas is compressed and discharged by the gas discharge compressor 21, and excess water (H 2 O) generated by combustion is discharged.
【００２０】尚、図中点線で示すように、燃焼器２に酸
素を混入することにより（酸素導入手段）、圧縮機１で
加圧する空気量を減らして循環量を増加させ効率を向上
させることができ、排出不凝縮ガス及び余分な水(H2O)
の排出量を抑制することができる。この時、酸素製造仕
事の効率低下と流体排出動力の削減による効率向上との
兼ね合いによって酸素の混入量を設定することにより、
設備全体の効率を向上させることが可能である。As shown by the dotted line in the figure, by mixing oxygen into the combustor 2 (oxygen introducing means), the amount of air to be compressed by the compressor 1 is reduced to increase the circulation amount and improve the efficiency. Can discharge and discharge non-condensable gas and excess water (H 2 O)
Emissions can be suppressed. At this time, by setting the mixing amount of oxygen by balancing the efficiency reduction of the oxygen production work and the efficiency improvement by reducing the fluid discharge power,
It is possible to improve the efficiency of the entire equipment.
【００２１】給水ポンプ１３で加圧給水された水は排熱
回収ボイラ８で過熱されて蒸気となり、蒸気導入路１４
から蒸気タービン１５に導入される。蒸気タービン１５
の排気は蒸気排出路１７から燃焼器２に送られて燃焼ガ
スと混合されると共に、冷却路１８からタービン３に送
られて高温部品の冷却及びシールに用いられる。冷却路
１８の蒸気の一部は回収路１９で回収されて燃焼器２に
送られて燃焼ガスと混合される。The water pressurized and supplied by the water supply pump 13 is superheated by the exhaust heat recovery boiler 8 to become steam, and the steam is introduced into the steam introduction path 14.
From the steam turbine 15. Steam turbine 15
Is sent from the steam discharge passage 17 to the combustor 2 and mixed with the combustion gas, and is sent from the cooling passage 18 to the turbine 3 to be used for cooling and sealing high-temperature components. Part of the steam in the cooling path 18 is recovered in the recovery path 19 and sent to the combustor 2 to be mixed with the combustion gas.
【００２２】一方、流量調整弁２６の調整により、ター
ビン３の排気が排気導入路７から空気導入路５に送ら
れ、タービン３の排気が圧縮機１に導入される。この
時、温度調整弁２５の調整により排熱回収ボイラ８で熱
回収された排気を温度調整路２４から排気導入路７に混
入することにより、圧縮機１に導入される排気の温度が
調整される。圧縮機１に高温の排気の一部が戻されるた
め、中間冷却手段としての中間冷却器２７により圧縮機
１の翼等が冷却される。On the other hand, by adjusting the flow control valve 26, the exhaust gas of the turbine 3 is sent from the exhaust gas introduction path 7 to the air introduction path 5, and the exhaust gas of the turbine 3 is introduced into the compressor 1. At this time, the temperature of the exhaust gas introduced into the compressor 1 is adjusted by mixing the exhaust heat recovered by the exhaust heat recovery boiler 8 by adjusting the temperature adjustment valve 25 from the temperature adjustment passage 24 into the exhaust introduction passage 7. You. Since a part of the high-temperature exhaust gas is returned to the compressor 1, the blades and the like of the compressor 1 are cooled by the intercooler 27 as the intercooler.
【００２３】上述した複合発電設備では、排気経路６か
らの排熱を排熱回収ボイラ８で回収して蒸気を発生さ
せ、発生した蒸気で蒸気タービン１５を作動させ、発電
機４，１１，１６により発電が行われるセミクローズド
サイクルが構築されているので、エネルギー回収効率が
向上し高効率の設備とすることが可能になる。また、蒸
気排出路１７から分岐して冷却路１８を設けてタービン
３の高温部品の冷却を行っているため、蒸気を高温部品
の冷却に使用して効率のよいタービン３で仕事をするこ
とができ、効率向上を図ることができる。In the above-described combined power generation facility, the exhaust heat from the exhaust path 6 is recovered by the exhaust heat recovery boiler 8 to generate steam, and the generated steam operates the steam turbine 15 to generate the generators 4, 11, 16 As a result, a semi-closed cycle in which power generation is performed is constructed, so that energy recovery efficiency is improved and high-efficiency equipment can be provided. Further, since the high-temperature parts of the turbine 3 are cooled by providing the cooling path 18 branching from the steam discharge path 17, it is possible to use the steam for cooling the high-temperature parts and work with the efficient turbine 3. And efficiency can be improved.
【００２４】また、復水器１２の不凝縮ガスをガス排出
圧縮機２１で外部に排出するようにしているので、排ガ
ス性能の悪化を抑制することができる。また、排熱回収
ボイラ８で熱回収された排気を温度調整路２４から排気
導入路７に混入するようにしているため、圧縮機１に導
入される排気の温度を最適に調整することが可能とな
る。更に、中間冷却器２７から冷却媒体を圧縮機１に導
入して冷却を行うようにしたので、高温の排気が導入さ
れても圧縮機１の損傷などの不具合を防止することがで
きる。Further, since the non-condensable gas in the condenser 12 is discharged to the outside by the gas discharge compressor 21, deterioration of exhaust gas performance can be suppressed. Further, since the exhaust gas recovered by the exhaust heat recovery boiler 8 is mixed into the exhaust gas introduction path 7 from the temperature adjustment path 24, the temperature of the exhaust gas introduced into the compressor 1 can be adjusted optimally. Becomes Further, since the cooling medium is introduced into the compressor 1 from the intercooler 27 to perform cooling, even if high-temperature exhaust gas is introduced, problems such as damage to the compressor 1 can be prevented.
【００２５】そして、タービン３の排気の一部を排気導
入路７から圧縮機１に戻すようにしているので、排気が
循環されて酸素成分を減らすことができ、窒素酸化物
（ＮＯｘ）の発生を抑制することが可能になる。このた
め、ＮＯｘを低減して排出ガス性能を悪化させることな
く効率低下を抑制することができるガスタービン設備１
０とすることが可能になる。Since a part of the exhaust gas of the turbine 3 is returned from the exhaust gas introduction passage 7 to the compressor 1, the exhaust gas can be circulated to reduce the oxygen component, and the generation of nitrogen oxides (NOx) Can be suppressed. For this reason, gas turbine equipment 1 capable of suppressing a decrease in efficiency without reducing NOx and deteriorating exhaust gas performance.
0 can be set.
【００２６】上述した実施形態例では、排気経路６から
の排熱を排熱回収ボイラ８で回収して蒸気を発生させ、
発生した蒸気で蒸気タービン１５を作動させる複合発電
設備にガスタービン設備１０を適用した例を示したが、
圧縮機１にタービン３の排気を戻す経路が設けられてい
れば、排気経路６から先の設備系統は様々な形態とする
ことが可能である。In the embodiment described above, the exhaust heat from the exhaust path 6 is recovered by the exhaust heat recovery boiler 8 to generate steam,
Although the example which applied the gas turbine equipment 10 to the combined power generation equipment which operates the steam turbine 15 with the generated steam was shown,
If a path for returning the exhaust gas of the turbine 3 is provided in the compressor 1, the equipment system ahead of the exhaust path 6 can be variously configured.
【００２７】[0027]
【発明の効果】本発明のガスタービン設備は、圧縮機で
加圧した空気と燃料とが導入され導入された空気と燃料
を燃焼させて作動流体を発生させる燃焼器を備え、燃焼
器からの作動流体を膨張させて仕事を行うタービンを有
し、タービンの排気を圧縮機の入口側に導入する排気導
入路を備え、排気導入路からタービンの排気の一部を圧
縮機に戻すようにしたので、排気が循環されて酸素成分
を減らすことができ、窒素酸化物（ＮＯｘ）の発生を抑
制することが可能になる。この結果、ＮＯｘを低減して
排出ガス性能を悪化させることなく効率低下を抑制する
ことができるガスタービン設備とすることが可能にな
る。The gas turbine equipment of the present invention includes a combustor in which air and fuel pressurized by a compressor are introduced, and the introduced air and fuel are burned to generate a working fluid. It has a turbine that expands the working fluid to perform work, has an exhaust introduction path that introduces exhaust gas from the turbine to the inlet side of the compressor, and returns part of the turbine exhaust gas from the exhaust introduction path to the compressor. Therefore, the exhaust gas is circulated and the oxygen component can be reduced, and the generation of nitrogen oxide (NOx) can be suppressed. As a result, it is possible to provide a gas turbine facility capable of suppressing a decrease in efficiency without reducing NOx and deteriorating exhaust gas performance.
【００２８】また、蒸気発生手段を有する排気経路を排
気導入路から分岐して設け、蒸気発生手段で発生した蒸
気が作動流体となって投入される蒸気タービンを備え、
蒸気タービンの排出蒸気でタービンの高温部品を冷却す
る冷却路を設ける一方、蒸気タービンの排出蒸気を燃焼
器に導入する蒸気流路を設けたので、排気経路からの排
熱を蒸気発生手段で回収して蒸気を発生させ、発生した
蒸気で蒸気タービンを作動させる効率のよい複合発電設
備とすることができる。An exhaust path having steam generating means is provided by branching from an exhaust introducing path, and a steam turbine is provided into which steam generated by the steam generating means is supplied as a working fluid.
A cooling path is provided to cool the high-temperature components of the turbine with the steam discharged from the steam turbine, while a steam flow path is introduced to introduce the steam discharged from the steam turbine to the combustor. To generate steam and operate the steam turbine with the generated steam to provide an efficient combined power generation facility.
【００２９】また、蒸気発生手段で熱回収されたタービ
ンの排気が導入される低圧タービンを備えると共に、低
圧タービンの排気を凝縮する凝縮手段を備え、凝縮手段
で凝縮された水を蒸気発生手段に給水する給水手段を設
ける一方、凝縮手段での不凝縮ガスを外部に排出させる
ガス排出手段を設けたので、スミクローズドサイクルが
構築され、エネルギー回収効率が向上した高効率の設備
とすることが可能になる。Further, a low-pressure turbine into which the exhaust gas of the turbine recovered by the steam generating means is introduced, and a condensing means for condensing the exhaust gas of the low-pressure turbine are provided, and the water condensed by the condensing means is supplied to the steam generating means. While a water supply means for supplying water is provided, a gas discharge means for discharging non-condensable gas from the condensing means to the outside is provided, so a closed closed cycle can be constructed and high efficiency equipment with improved energy recovery efficiency can be provided. become.
【００３０】また、蒸気発生手段で熱回収されたタービ
ンの排気の一部の所定量を排気導入路に導入する温度調
整流路を備えたので、圧縮機に導入される排気の温度を
最適に調整することが可能となる。また、圧縮機を冷却
する中間冷却手段を備えたので、高温の排気が導入され
ても圧縮機の損傷などの不具合を防止することができ
る。また、燃焼器に酸素を導入する酸素導入手段を備え
たので、圧縮機で加圧する空気量を減らして循環量を増
加させ効率を向上させることができる。Further, since a temperature adjusting flow path is provided for introducing a predetermined amount of a part of the exhaust gas of the turbine heat recovered by the steam generating means into the exhaust gas introduction path, the temperature of the exhaust gas introduced into the compressor can be optimized. It can be adjusted. In addition, since an intermediate cooling means for cooling the compressor is provided, problems such as damage to the compressor can be prevented even when high-temperature exhaust gas is introduced. Further, since the combustor is provided with the oxygen introducing means for introducing oxygen, the amount of air pressurized by the compressor can be reduced, the circulation amount can be increased, and the efficiency can be improved.
【図１】本発明の一実施形態例に係るガスタービン設備
を備えた複合発電設備の概略系統図。FIG. 1 is a schematic system diagram of an integrated power generation facility including a gas turbine facility according to an embodiment of the present invention.
【図２】圧縮機の他の実施形態例を表す概略系統図。FIG. 2 is a schematic system diagram showing another embodiment of the compressor.
１ 圧縮機 ２ 燃焼器 ３ タービン ４，１１，１６ 発電機 ５ 空気導入路 ６ 排気経路 ７ 排気導入路 ８ 排熱回収ボイラ ９ 低圧タービン １０ ガスタービン設備 １２ 復水器 １３ 給水ポンプ １４ 蒸気導入路 １５ 蒸気タービン １７ 蒸気排出路 １８ 冷却路 １９ 回収路 ２１ ガス排出圧縮機 ２２ 起動時給水手段 ２３ 排気流路 ２４ 温度調整路 ２５ 温度調整弁 ２６ 流量調整弁 ２７ 中間冷却器 DESCRIPTION OF SYMBOLS 1 Compressor 2 Combustor 3 Turbine 4, 11, 16 Generator 5 Air introduction path 6 Exhaust path 7 Exhaust introduction path 8 Exhaust heat recovery boiler 9 Low pressure turbine 10 Gas turbine equipment 12 Condenser 13 Feedwater pump 14 Steam introduction path 15 Steam turbine 17 Steam discharge path 18 Cooling path 19 Recovery path 21 Gas discharge compressor 22 Start-up water supply means 23 Exhaust flow path 24 Temperature control path 25 Temperature control valve 26 Flow control valve 27 Intercooler
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０２Ｃ 3/30 Ｆ０２Ｃ 3/30 Ｚ 6/18 6/18 Ａ 7/143 7/143 7/18 7/18 Ａ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) F02C 3/30 F02C 3/30 Z 6/18 6/18 A 7/143 7/143 7/18 7 / 18 A
Claims (6)
れ導入された空気と燃料を燃焼させて作動流体を発生さ
せる燃焼器を備え、燃焼器からの作動流体を膨張させて
仕事を行うタービンを有し、タービンの排気を圧縮機の
入口側に導入する排気導入路を備えたことを特徴とする
ガスタービン設備。An air and a fuel pressurized by a compressor are introduced, and a combustor for generating a working fluid by burning the introduced air and fuel is provided, and a work is performed by expanding the working fluid from the combustor. A gas turbine facility, comprising: a turbine for performing the operation; and an exhaust introduction path for introducing exhaust gas from the turbine to an inlet side of the compressor.
る排気経路を排気導入路から分岐して設け、蒸気発生手
段で発生した蒸気が作動流体となって投入される蒸気タ
ービンを備え、蒸気タービンの排出蒸気でタービンの高
温部品を冷却する冷却路を設ける一方、蒸気タービンの
排出蒸気を燃焼器に導入する蒸気流路を設けたことを特
徴とするガスタービン設備。2. The steam turbine according to claim 1, further comprising a steam turbine provided with an exhaust passage having a steam generating means branched from the exhaust introducing path, wherein the steam generated by the steam generating means is input as a working fluid. A gas turbine facility comprising: a cooling passage for cooling a high-temperature component of a turbine with steam discharged from the steam turbine; and a steam passage for introducing steam discharged from the steam turbine to a combustor.
収されたタービンの排気が導入される低圧タービンを備
えると共に、低圧タービンの排気を凝縮する凝縮手段を
備え、凝縮手段で凝縮された水を蒸気発生手段に給水す
る給水手段を設ける一方、凝縮手段での不凝縮ガスを外
部に排出させるガス排出手段を設けたことを特徴とする
ガスタービン設備。3. The water condensed by the condenser according to claim 2, further comprising a low-pressure turbine into which the exhaust of the turbine heat recovered by the steam generator is introduced, and condensing means for condensing the exhaust of the low-pressure turbine. Gas supply equipment provided with water supply means for supplying water to the steam generation means, and gas discharge means for discharging non-condensable gas in the condensation means to the outside.
収されたタービンの排気の一部の所定量を排気導入路に
導入する温度調整流路を備えたことを特徴とするガスタ
ービン設備。4. The gas turbine equipment according to claim 3, further comprising a temperature adjustment flow path for introducing a predetermined amount of a part of the exhaust gas of the turbine recovered by the steam generation means into the exhaust gas introduction path.
おいて、圧縮機に導入される流体を冷却する中間冷却手
段を備えたことを特徴とするガスタービン設備。5. The gas turbine equipment according to claim 1, further comprising an intermediate cooling means for cooling a fluid introduced into the compressor.
おいて、燃焼器に酸素を導入する酸素導入手段を備えた
ことを特徴とするガスタービン設備。6. The gas turbine equipment according to claim 1, further comprising oxygen introducing means for introducing oxygen into the combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000320228A JP2002129977A (en) | 2000-10-20 | 2000-10-20 | Gas turbine equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000320228A JP2002129977A (en) | 2000-10-20 | 2000-10-20 | Gas turbine equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002129977A true JP2002129977A (en) | 2002-05-09 |
Family
ID=18798538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000320228A Withdrawn JP2002129977A (en) | 2000-10-20 | 2000-10-20 | Gas turbine equipment |
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| Country | Link |
|---|---|
| JP (1) | JP2002129977A (en) |
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2000
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