JPH0341655B2 - - Google Patents
Info
- Publication number
- JPH0341655B2 JPH0341655B2 JP6473084A JP6473084A JPH0341655B2 JP H0341655 B2 JPH0341655 B2 JP H0341655B2 JP 6473084 A JP6473084 A JP 6473084A JP 6473084 A JP6473084 A JP 6473084A JP H0341655 B2 JPH0341655 B2 JP H0341655B2
- Authority
- JP
- Japan
- Prior art keywords
- gas turbine
- exhaust gas
- fire
- boiler
- fired boiler
- 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.)
- Expired
Links
- 238000003303 reheating Methods 0.000 claims description 18
- 238000010248 power generation Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/007—Control systems for waste heat boilers
-
- 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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
- F01K23/103—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with afterburner in exhaust boiler
Description
【発明の詳細な説明】
産業上の利用分野
本発明は排熱回収ガスタービン発電設備に関
し、特にガスタービンの排ガスが有するエネルギ
ーの有効利用を図つたものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to exhaust heat recovery gas turbine power generation equipment, and particularly to equipment that aims to effectively utilize the energy contained in the exhaust gas of a gas turbine.
従来例の構成とその問題点
ガスタービンの排ガスは通常の火焚きボイラー
の燃焼ガスに比べて温度が低く、風量が多いた
め、排ガス熱エネルギーの回収は通常の火焚きボ
イラーではできない。そこで、ガスタービンの排
ガスを再燃するようにすれば、火焚きボイラーを
も使用可能にでき、熱併給ガスタービン発電プラ
ントの熱利用率を高めることができる。しかし、
ガスタービンの排ガス中の酸素量が少なくなつて
くると、安定な再燃ができなくなる。Conventional structure and its problems Because the exhaust gas of a gas turbine has a lower temperature and a higher air volume than the combustion gas of a normal fire-fired boiler, it is not possible to recover exhaust gas thermal energy with a normal fire-fired boiler. Therefore, by reburning the exhaust gas of the gas turbine, it is possible to use a fire-fired boiler, and the heat utilization rate of the cogeneration gas turbine power generation plant can be increased. but,
When the amount of oxygen in the gas turbine exhaust gas decreases, stable reburning becomes impossible.
発明の目的
本発明はガスタービンの排ガスを再燃するのに
用いる追い焚きバーナの上流側で、プロセス蒸気
発生用のボイラーの押込みフアンを利用して空気
をガスタービン排ガスと混合し、排ガス中の酸素
濃度を増加させて追い焚きを容易にした排熱回収
ガスタービン発電設備を提供することを目的とす
るものである。Purpose of the Invention The present invention utilizes a forced fan of a boiler for process steam generation to mix air with the gas turbine exhaust gas on the upstream side of a reheating burner used to reburn the gas turbine exhaust gas, thereby reducing the amount of oxygen in the exhaust gas. The object of the present invention is to provide an exhaust heat recovery gas turbine power generation facility that increases the concentration and facilitates reheating.
発明の構成
本発明は、ガスタービンの排ガス経路の下流側
に追い焚きバーナを設置し、該追い焚きバーナの
下流側に押込みフアンを含む付属設備をもつた通
常の火焚きボイラーを設置し、前記押込みフアン
からの空気供給経路を前記火焚きボイラーおよび
追い焚きバーナの上流側のガスタービン排ガス経
路に、それぞれダンパーを介して接続したもので
あり、通常の火焚きボイラー設備を用いてガスタ
ービン発電設備の排ガス熱エネルギーを有効に利
用できるとともに、通常の火焚きボイラーとして
の単独運転も可能となるものである。Composition of the Invention The present invention installs a reheating burner on the downstream side of the exhaust gas path of a gas turbine, and installs a normal fire-fired boiler with accessory equipment including a forced fan on the downstream side of the reheating burner. The air supply path from the forced fan is connected to the gas turbine exhaust gas path on the upstream side of the fire-fired boiler and reheating burner through dampers, respectively, and the gas turbine power generation equipment can be installed using normal fire-fired boiler equipment. The exhaust gas heat energy of the boiler can be effectively used, and it can also be operated independently as a normal fire-fired boiler.
実施例と作用
以下本発明の一実施例を図面に基づいて説明す
る。図面において、１はガスタービンで、燃焼器
２からの燃焼ガスにより駆動され、燃焼器２へ圧
縮空気を供給する空気圧縮機３および発電機４を
回転駆動する。５は通常の火焚きボイラーで、こ
の火焚きボイラー５とガスタービン１の間にガス
タービン１の排ガスを再燃するための追い焚きバ
ーナ６が設置されている。７は追い焚き燃料制御
装置で、ガスタービン１の排ガス流量を検知して
追い焚きバーナ６への燃料供給量を制御する。８
は火焚きボイラー５に燃焼用空気を供給する押込
みフアンで、該燃焼用空気は空気予熱器９で火焚
きボイラー５からの排ガスと熱交換された後、火
焚きボイラー５に供給される。１０は空気予熱器
９からの排ガスの排出経路中に介装された給水加
熱器で、給水タンク１１から火焚きボイラー５へ
の供給水を加熱する。１２は給水バルブ、１３は
給水バイパスバルブで、給水タンク１１からの供
給水を給水加熱器１０を通して火焚きボイラー５
に供給するか、直接に火焚きボイラー５に供給す
るかの選択をするバルブである。１４は酸素補給
ダンパーで、空気予熱器９の出口側からガスター
ビン１の出口側への酸素補給経路１５中に介装さ
れている。１６はガスタービン１の出口側から追
い焚きバーナ６への排ガス経路中に介装された排
ガスダンパー、１７は空気予熱器９の出口側から
火焚きボイラー５への燃焼用空気経路中に介装さ
れた燃焼用空気ダンパーである。１８は火焚きボ
イラー５への燃料供給量を制御する火焚き燃料制
御装置である。Embodiment and Operation An embodiment of the present invention will be described below based on the drawings. In the drawings, reference numeral 1 denotes a gas turbine, which is driven by combustion gas from a combustor 2 and rotates an air compressor 3 that supplies compressed air to the combustor 2 and a generator 4 . Reference numeral 5 denotes a normal fire-fired boiler, and a reheating burner 6 for reburning the exhaust gas of the gas turbine 1 is installed between the fire-fired boiler 5 and the gas turbine 1. Reference numeral 7 denotes a reheating fuel control device that detects the flow rate of exhaust gas from the gas turbine 1 and controls the amount of fuel supplied to the reheating burner 6 . 8
is a forced fan that supplies combustion air to the fire-fired boiler 5, and the combustion air is supplied to the fire-fired boiler 5 after heat exchange with the exhaust gas from the fire-fired boiler 5 in the air preheater 9. Reference numeral 10 denotes a feed water heater interposed in the exhaust gas discharge path from the air preheater 9, which heats the water fed from the water tank 11 to the fire-fired boiler 5. 12 is a water supply valve, 13 is a water supply bypass valve, and the supply water from the water supply tank 11 is passed through the water supply heater 10 to the fire-fired boiler 5.
This valve selects whether to supply the water to the boiler 5 or directly to the fire-fired boiler 5. Reference numeral 14 denotes an oxygen replenishment damper, which is interposed in an oxygen replenishment path 15 from the outlet side of the air preheater 9 to the outlet side of the gas turbine 1. 16 is an exhaust gas damper installed in the exhaust gas path from the outlet side of the gas turbine 1 to the reheating burner 6; 17 is installed in the combustion air path from the outlet side of the air preheater 9 to the fire-burning boiler 5. This is a combustion air damper. 18 is a fire-fired fuel control device that controls the amount of fuel supplied to the fire-fired boiler 5.
上記構成において、ガスタービン１の運休時
は、酸素補給ダンパー１４、排ガスダンパー１６
を全閉し、燃焼用空気ダンパー１７を全開し、給
水バルブ１２を全閉し、給水バイパスバルブ１３
を全開し、押込みフアン８を運転することにより
通常のボイラー設備として運用される。ガスター
ビン１を運転する時は、押込みフアン８も同時に
運転し、空気予熱器９を経由した空気を酸素補給
ダンパー１４を介して追い焚きバーナ６の上流側
でガスタービン１の排ガスと合流させ、酸素濃度
を増加させた後追い焚きを行なう。このときの補
給酸素量の調整は、例えば酸素補給ダンパー１４
を全開閉弁に構成し、火焚きボイラー５からの排
ガスの濃度を検知して押込みフアン８の吸入弁を
制御して行なう。同時に、給水バルブ１２を全開
し、給水バイパスバルブ１３を全閉して、排ガス
の熱エネルギーを回収する。 In the above configuration, when the gas turbine 1 is out of operation, the oxygen supply damper 14 and the exhaust gas damper 16
fully close the combustion air damper 17, fully close the water supply valve 12, and fully close the water supply bypass valve 13.
By fully opening the boiler and operating the push fan 8, it can be operated as normal boiler equipment. When the gas turbine 1 is operated, the forced fan 8 is also operated at the same time, and the air that has passed through the air preheater 9 is reheated through the oxygen supplement damper 14 and merged with the exhaust gas of the gas turbine 1 on the upstream side of the burner 6. Follow-up firing is performed to increase the oxygen concentration. At this time, the amount of supplementary oxygen can be adjusted by using the oxygen supplement damper 14, for example.
is configured as a fully open/close valve, and the concentration of exhaust gas from the fire-fired boiler 5 is detected to control the suction valve of the push-in fan 8. At the same time, the water supply valve 12 is fully opened and the water supply bypass valve 13 is fully closed to recover the thermal energy of the exhaust gas.
このように、酸素補給ダンパー１４により押込
みフアン８からの空気をガスタービン１の排ガス
経路中に導き、排ガスの酸素濃度を増加させ、追
い焚きバーナ６での再燃を容易にしている。この
とき、燃焼用空気ダンパー１７は押込みフアン８
側への逆流を防止する。また、排ガスダンパー１
６はガスタービン１を停止してボイラー設備とし
て単独に運転する時に、ガスタービン１側への逆
流を防止する。 In this way, the oxygen supply damper 14 guides the air from the forced fan 8 into the exhaust gas path of the gas turbine 1, increasing the oxygen concentration of the exhaust gas and facilitating reburning in the reheating burner 6. At this time, the combustion air damper 17 is operated by the push-in fan 8.
Prevent backflow to the side. In addition, exhaust gas damper 1
6 prevents backflow to the gas turbine 1 side when the gas turbine 1 is stopped and operated independently as a boiler equipment.
発明の効果
以上本発明によれば、火焚きボイラーに用いる
押込みフアンにより、空気をダンパーを通して追
い焚きバーナ上流側のガスタービン排ガス経路中
に導くので、ガスタービン排ガスの酸素濃度を増
加させて追い焚きバーナでの再燃を容易にでき、
安定した燃焼を実施できる。このように、ダンパ
ーおよび追い焚きバーナを通常の火焚きボイラー
設備に付加することにより、通常の火焚きボイラ
ーを用いてガスタービン発電設備の排ガス熱エネ
ルギーを有効に利用できるとともにダンパーの操
作により通常の火焚きボイラーとしての単独運転
も可能である。Effects of the Invention According to the present invention, the forced fan used in the fire-fired boiler guides air through the damper into the gas turbine exhaust gas path on the upstream side of the reheating burner, thereby increasing the oxygen concentration of the gas turbine exhaust gas and reheating. Easy to rekindle with a burner,
Stable combustion can be achieved. In this way, by adding a damper and reheating burner to normal fire-burning boiler equipment, it is possible to effectively utilize the exhaust gas heat energy of gas turbine power generation equipment using a normal fire-fired boiler, and by operating the damper, it is possible to It is also possible to operate independently as a fire-fired boiler.
図面は本発明の一実施側を示す系統図である。
１……ガスタービン、４……発電機、５……火
焚きボイラー、６……追い焚きバーナ、８……押
込みフアン、９……空気予熱器、１０……給水加
熱器、１２……給水バルブ、１３……給水バイパ
スバルブ、１４……酸素補給ダンパー、１６……
排ガスダンパー、１７……燃焼用空気ダンパー。
The drawing is a system diagram showing one implementation side of the present invention. 1... Gas turbine, 4... Generator, 5... Fire-fired boiler, 6... Reheating burner, 8... Push fan, 9... Air preheater, 10... Feed water heater, 12... Water feed Valve, 13...Water supply bypass valve, 14...Oxygen supply damper, 16...
Exhaust gas damper, 17... Combustion air damper.
Claims (1)
きバーナを設置し、該追い焚きバーナの下流側に
押込みフアンを含む付属設備をもつた通常の火焚
きボイラーを設置し、前記押込みフアンからの空
気供給経路を前記火焚きボイラーおよび追い焚き
バーナの上流側のガスタービン排ガス経路に、そ
れぞれダンパーを介して接続したことを特徴とす
る排熱回収ガスタービン発電設備。1. A reheating burner is installed on the downstream side of the exhaust gas path of the gas turbine, a normal fire-burning boiler with attached equipment including a forced fan is installed downstream of the reheating burner, and air is supplied from the forced fan. An exhaust heat recovery gas turbine power generation facility characterized in that a path is connected to a gas turbine exhaust gas path upstream of the reheating boiler and the reheating burner via dampers, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6473084A JPS60206910A (en) | 1984-03-30 | 1984-03-30 | Exhaust heat recovery gas turbine power generating facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6473084A JPS60206910A (en) | 1984-03-30 | 1984-03-30 | Exhaust heat recovery gas turbine power generating facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60206910A JPS60206910A (en) | 1985-10-18 |
| JPH0341655B2 true JPH0341655B2 (en) | 1991-06-24 |
Family
ID=13266556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6473084A Granted JPS60206910A (en) | 1984-03-30 | 1984-03-30 | Exhaust heat recovery gas turbine power generating facility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083226A (en) * | 2011-10-12 | 2013-05-09 | Kawasaki Heavy Ind Ltd | Control method and control device for waste heat boiler system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060272334A1 (en) * | 2005-06-01 | 2006-12-07 | Pavol Pranda | Practical method for improving the efficiency of cogeneration system |
-
1984
- 1984-03-30 JP JP6473084A patent/JPS60206910A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083226A (en) * | 2011-10-12 | 2013-05-09 | Kawasaki Heavy Ind Ltd | Control method and control device for waste heat boiler system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60206910A (en) | 1985-10-18 |
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