JP3526026B2 - Waste heat recovery method for gas turbine power generation system - Google Patents
Waste heat recovery method for gas turbine power generation systemInfo
- Publication number
- JP3526026B2 JP3526026B2 JP2000167430A JP2000167430A JP3526026B2 JP 3526026 B2 JP3526026 B2 JP 3526026B2 JP 2000167430 A JP2000167430 A JP 2000167430A JP 2000167430 A JP2000167430 A JP 2000167430A JP 3526026 B2 JP3526026 B2 JP 3526026B2
- Authority
- JP
- Japan
- Prior art keywords
- gas turbine
- amount
- power generation
- boiler
- waste heat
- 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 - Fee Related
Links
Classifications
-
- 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
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【発明の属する技術分野】本発明は、ガスタービン発電
システムの廃熱回収方法に関する。TECHNICAL FIELD The present invention relates to a waste heat recovery method for a gas turbine power generation system.
【０００２】[0002]
【従来の技術】ガスタービン発電システムは、一般に図
４に示すように、発電機１と、ガスタービン２と圧縮機
３とを同一の回転軸４上に配列し、別途設置した燃焼器
５に圧縮機３で圧縮した空気と燃料とを供給して燃焼さ
せ、この燃焼ガスによりガスタービン２を回して発電機
１を駆動する構成となっている。このようなガスタービ
ン発電システムにおいては、通常、ガスタービン２から
の廃熱を有効利用するため、同図に示すように、ガスタ
ービン２の排ガス系（排ガス管路）６にボイラー７を配
設し、ガスタービン２からの廃熱と水との間で熱交換さ
せて蒸気または温水を発生させるようにしている。2. Description of the Related Art Generally, as shown in FIG. 4, a gas turbine power generation system has a generator 1, a gas turbine 2 and a compressor 3 arranged on the same rotary shaft 4, and a combustor 5 installed separately. Air and fuel compressed by the compressor 3 are supplied and burned, and the combustion gas is used to rotate the gas turbine 2 to drive the generator 1. In such a gas turbine power generation system, in order to effectively use the waste heat from the gas turbine 2, a boiler 7 is provided in the exhaust gas system (exhaust gas pipeline) 6 of the gas turbine 2 as shown in FIG. However, heat or heat is exchanged between the waste heat from the gas turbine 2 and water to generate steam or hot water.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記したガ
スタービン発電システムにおいては、図５に示すよう
に、気温が高くなる夏季には発電量（曲線で示す）を下
げるように運転管理している。その理由は、燃焼用空気
としての大気の温度が高くなると、燃焼器５での燃焼温
度が高くなってその耐久性が低下しまうことに加え、空
気中の酸素濃度が低下して燃焼効率が低下してしまうと
いう不都合が生じ、これらの不都合を避けるため、燃焼
器５での燃焼量を抑制する対策を採っているからであ
る。一方、エネルギー需要の一般的な現象として、気温
が高くなる夏季には、蒸気や温水などの熱量よりも電力
の需要が高まることが知られている。このため、上記ボ
イラー７による従来の廃熱回収方式によれば、特に気温
が高くなる夏季に発電量と熱回収量（図５に棒グラフで
示す）とに需給アンバランスが生じ、総合熱効率が低下
することとなっていた。By the way, in the above-mentioned gas turbine power generation system, as shown in FIG. 5, operation management is performed so as to reduce the amount of power generation (shown by a curve) in the summer when the temperature rises. . The reason is that when the temperature of the atmosphere as the combustion air rises, the combustion temperature in the combustor 5 rises and its durability decreases, and the oxygen concentration in the air decreases and the combustion efficiency decreases. This is because the inconvenience occurs, and in order to avoid these inconveniences, measures are taken to suppress the combustion amount in the combustor 5. On the other hand, as a general phenomenon of energy demand, it is known that the demand for electric power is higher than the amount of heat of steam or hot water in summer when the temperature is high. Therefore, according to the conventional waste heat recovery method using the boiler 7, there is a supply and demand imbalance between the power generation amount and the heat recovery amount (shown by the bar graph in Fig. 5) particularly in summer when the temperature is high, and the overall thermal efficiency is reduced. It was supposed to be done.
【０００４】なお、一部では、ガスタービンの排ガスを
熱電素子（熱電材料）を内臓する熱電発電装置に導き、
ガスタービンの廃熱と燃料となる液化天然ガスとの温度
差を利用して発電することを行っているが（例えば、特
開平１１−９７７５０号公報参照）、この場合は、電力
の需要に応えることができても、蒸気または温水を全く
生成することができず、総合熱効率の改善にはつながら
ない。Incidentally, in some cases, the exhaust gas of the gas turbine is guided to a thermoelectric power generator which incorporates a thermoelectric element (thermoelectric material),
Electric power is generated using the temperature difference between the waste heat of the gas turbine and the liquefied natural gas that serves as fuel (see, for example, Japanese Patent Application Laid-Open No. 11-97750). In this case, the demand for electric power is met. However, steam or hot water cannot be generated at all, which does not lead to improvement in overall thermal efficiency.
【０００５】本発明は、上記従来の問題点を解決するこ
とを課題としてなされたもので、その目的とするところ
は、需要の変動に応じて電力と熱量とをバランスよく生
成できるようにし、もって総合熱効率の向上に大きく寄
与するガスタービン発電システムの廃熱回収方法を提供
することにある。The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to enable generation of electric power and heat in a well-balanced manner in accordance with fluctuations in demand. An object of the present invention is to provide a method for recovering waste heat of a gas turbine power generation system, which greatly contributes to improvement of total thermal efficiency.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、燃焼ガスによりガスタービンを回して発
電を行うガスタービン発電システムにおいて、前記ガス
タービンの排ガス系に、蒸気または温水を発生するボイ
ラーと熱電変換素子を内臓する熱電発電装置とを並設
し、電力需要と熱量需要との相対変動に応じて前記ボイ
ラーと前記熱電発電装置とに対する排ガスの分配比率を
制御することを特徴とする。In order to achieve the above object, the present invention provides a gas turbine power generation system for rotating a gas turbine by a combustion gas to generate electric power, and generating steam or hot water in an exhaust gas system of the gas turbine. A boiler and a thermoelectric power generator that incorporates a thermoelectric conversion element are installed side by side, and the distribution ratio of the exhaust gas to the boiler and the thermoelectric power generator is controlled according to the relative fluctuation between the power demand and the heat quantity demand. To do.
【０００７】このように行うガスタービン発電システム
の廃熱回収方法によれば、熱量需要と相対に電力需要が
増える場合は、熱電発電装置に供給する排ガス量の比率
を高め、逆に電力需要と相対に熱量需要が増える場合
は、ボイラーに供給する排ガス量の比率を高めること
で、需給アンバランスの解消を図ることができる。According to the waste heat recovery method of the gas turbine power generation system which is performed in this way, when the power demand increases relative to the heat demand, the ratio of the exhaust gas amount supplied to the thermoelectric generator is increased, and conversely the power demand is increased. When the heat demand increases relative to each other, the supply-demand imbalance can be eliminated by increasing the ratio of the amount of exhaust gas supplied to the boiler.
【０００８】本発明は、ボイラーで発生した蒸気または
温水の熱量と熱電発電装置で発生した電力量との少なく
とも一方を検出し、この検出結果をボイラーと熱電発電
装置とに対する排ガスの分配比率の制御にフィードバッ
クするのが望ましく、これにより、熱発生量と発電量と
の比率をより正確に調整することができる。The present invention detects at least one of the amount of heat of steam or hot water generated in a boiler and the amount of electric power generated in a thermoelectric power generator, and controls the distribution ratio of exhaust gas to the boiler and the thermoelectric power generator based on the detection result. It is desirable to feed back the heat generation amount to the heat generation amount so that the ratio between the heat generation amount and the power generation amount can be adjusted more accurately.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を添付
図面に基いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１０】図１は、本発明の１つの実施の形態として
の廃熱回収システムを含むガスタービン発電システムを
示したものである。なお、ガスタービン発電システム
は、前出図４に示したものと同じであるので、ここで
は、同一構成要素に同一符号を付すこととする。本実施
の形態においては、ガスタービン２の排ガス管路（排ガ
ス系）６を２経路に分岐して、一方の分岐管路６ａにボ
イラー１０を、他方の分岐管路６ｂに熱電発電装置１１
をそれぞれ設けると共に、各分岐管路６ａ、６ｂにボイ
ラー１０、熱電発電装置１１に対する排ガスの供給量を
各独立に調整するダンパー１２、１３を設けている。FIG. 1 shows a gas turbine power generation system including a waste heat recovery system according to an embodiment of the present invention. Since the gas turbine power generation system is the same as that shown in FIG. 4, the same components are designated by the same reference numerals. In the present embodiment, the exhaust gas pipeline (exhaust gas system) 6 of the gas turbine 2 is branched into two paths, the boiler 10 is provided in one branch pipeline 6a, and the thermoelectric generator 11 is provided in the other branch pipeline 6b.
And the dampers 12 and 13 for independently adjusting the supply amount of the exhaust gas to the boiler 10 and the thermoelectric generator 11, respectively.
【００１１】ボイラー１０は、前記分岐管路６ａを経て
送られるガスタービン２の廃熱と水との間で熱交換して
蒸気または温水を発生する機能を有しており、発生した
蒸気または温水はタンク１４を経て、熱を必要とする設
備（需要先）へ給送されるようになっている。一方、熱
電発電装置１１は、温度差により電力を発生する熱電素
子を内臓したもので、ここでは、前記分岐管路６ｂを経
て送られるガスタービン２の廃熱を高温熱源、水を低温
熱源として、両熱源の温度差により電力を発生するよう
になっている。なお、熱電発生器１１で発生した電力
は、直流−交流変換装置１５を経て、電力を必要とする
設備（需要先）へ送電されるようになっている。また、
ボイラー１０は、ここでは熱電発電装置１１で用いた水
を共通に使用するようになっており、熱電発電装置１１
とボイラー１０とは、この共通の水を輸送するための連
通管１６で接続されている。このように熱電発電１１で
用いた低温熱源としての水をボイラー１０でも利用する
ようにしたのは、ガスタービン２の廃熱回収をより多く
するためである。The boiler 10 has a function of exchanging heat between the waste heat of the gas turbine 2 sent through the branch pipeline 6a and water to generate steam or hot water. Is supplied to equipment (demandee) that requires heat via the tank 14. On the other hand, the thermoelectric generator 11 has a built-in thermoelectric element that generates electric power due to a temperature difference. Here, the waste heat of the gas turbine 2 sent through the branch pipeline 6b is used as a high-temperature heat source and water as a low-temperature heat source. Electric power is generated by the temperature difference between the two heat sources. The electric power generated by the thermoelectric generator 11 is transmitted to the facility (demandee) that requires the electric power via the DC-AC converter 15. Also,
The boiler 10 is adapted to commonly use the water used in the thermoelectric generator 11 here.
The boiler 10 and the boiler 10 are connected by a communication pipe 16 for transporting this common water. The water as the low-temperature heat source used in the thermoelectric power generation 11 is also used in the boiler 10 in order to increase the waste heat recovery of the gas turbine 2.
【００１２】本実施の形態ではまた、別途、ダンパー１
２、１３の開度を制御するためのガス量制御装置１７を
設けている。このガス量制御装置１７は、ボイラー１０
による熱回収量（発生熱量）を設定する熱量設定器１８
と、熱電発電装置１１の発電量を設定する電力設定器１
９と、各分岐管路６ａ、６ｂに設けたダンパー１２、１
３の開度を調節する調節制御器２０と、この調節制御器
２０に対して熱量設定器１８と電力設定器１９とを選択
的に接続するスイッチ２１とを備えている。一方、ボイ
ラー１０の出力側には発生した蒸気または温水の熱量を
測定する熱量計２２が、直流−交流変換装置１５の出力
側には出力電力を測定する電力計２３がそれぞれ設けら
れ、これら熱量計２２、電力計２３の信号は前記ガス量
制御装置１７内の調節制御器２０に送出されるようにな
っている。In the present embodiment, the damper 1 is also separately provided.
A gas amount control device 17 for controlling the opening degrees of 2 and 13 is provided. The gas amount control device 17 is used in the boiler 10
Calorie setting device 18 for setting the heat recovery amount (generated heat amount) by
And a power setting device 1 for setting the amount of power generation of the thermoelectric generator 11.
9 and dampers 12 and 1 provided on the respective branch pipes 6a and 6b
An adjustment controller 20 that adjusts the opening degree of No. 3 and a switch 21 that selectively connects the heat quantity setting device 18 and the power setting device 19 to the adjustment controller 20 are provided. On the other hand, on the output side of the boiler 10, a calorimeter 22 for measuring the calorific value of the generated steam or hot water is provided, and on the output side of the DC / AC converter 15, a wattmeter 23 for measuring the output power is provided, respectively. The signals from the meter 22 and the power meter 23 are sent to the adjustment controller 20 in the gas amount control device 17.
【００１３】以下、上記のように構成した廃熱回収シス
テムによる廃熱回収方法について、図２も参照して説明
する。ガスタービン発電システムは、従来と同様、燃焼
器５に圧縮機３で圧縮した空気と燃料とを供給して燃焼
させ、この燃焼ガスによりガスタービン２を回して発電
機１を駆動する。しかして、このガスタービン発電シス
テムにおいては、前記したように燃焼器５で燃焼空気と
して用いられる大気の温度上昇に応じて発電量を下げる
ように運転管理している（図５参照）。Hereinafter, a waste heat recovery method by the waste heat recovery system configured as described above will be described with reference to FIG. In the gas turbine power generation system, the air and fuel compressed by the compressor 3 are supplied to the combustor 5 and burned, and the gas turbine 2 is rotated by this combustion gas to drive the power generator 1 as in the conventional case. Therefore, in this gas turbine power generation system, as described above, the operation management is performed such that the power generation amount is lowered according to the temperature rise of the atmosphere used as the combustion air in the combustor 5 (see FIG. 5).
【００１４】本廃熱回収システムでは、電力需要と熱量
需要との相対変動を監視して、図２に示すように、先
ず、その相対変動量Ｖに基づいて電力と熱量とのどちら
が必要であるかを判断し（Ｓ１）、電力を必要としてい
る場合は、電力設定器１９に必要な電力量を設定し（Ｓ
２）、さらにスイッチ２１を電力設定器１９と調節制御
器２０との接続側に切替えて（Ｓ３）、電力主体の制御
を行う。この場合、ガス量制御装置１７内の調節制御器
２０は、熱電発電装置１１で前記設定した電力量が得ら
れるように、ガスタービン２の排気系６の各分岐管路６
ａ、６ｂに設けたダンパー１２、１３の開度を調節す
る。これにより、ボイラー１０に供給される排ガス量と
相対に熱電発電装置１１に供給される排ガス量の比率が
高まり、熱電発電装置１１による発電量が増加して、ガ
スタービン２による発電量を含めた全発電量が増加す
る。ここで、熱電発電装置１１の発電量は電力計２３に
より監視されており、調節制御器２０は、この電力計２
３の信号に基づいて前記発電設定器１９で設定した発電
量が得らるように各ダンパー１２、１３の開度をフィー
ドバック制御する。In this waste heat recovery system, the relative fluctuations between the electric power demand and the heat quantity demand are monitored, and as shown in FIG. 2, first, which of the electric power and the heat quantity is required based on the relative fluctuation amount V. It is determined (S1), and if the power is required, the required power amount is set in the power setter 19 (S1).
2) Further, the switch 21 is switched to the connection side of the power setting device 19 and the adjustment controller 20 (S3), and the control mainly by the power is performed. In this case, the adjustment controller 20 in the gas amount control device 17 controls the branch pipe lines 6 of the exhaust system 6 of the gas turbine 2 so that the thermoelectric power generation device 11 can obtain the set electric power amount.
The opening degree of the dampers 12 and 13 provided on a and 6b is adjusted. As a result, the ratio of the amount of exhaust gas supplied to the boiler 10 relative to the amount of exhaust gas supplied to the thermoelectric power generator 11 is increased, the amount of power generated by the thermoelectric power generator 11 is increased, and the amount of power generated by the gas turbine 2 is included. Total power generation increases. Here, the power generation amount of the thermoelectric generator 11 is monitored by the power meter 23, and the adjustment controller 20 controls the power meter 2
Based on the signal of 3, the opening degree of each of the dampers 12 and 13 is feedback-controlled so that the power generation amount set by the power generation setting device 19 is obtained.
【００１５】しかして、電力需要と熱量需要との相対変
動量Ｖは、燃焼器５で燃焼空気として用いられる大気の
温度と相関しているので、上記した電力主体の制御にお
いては、大気温度の上昇に応じて熱電発電装置１１によ
る発電量を増加させる制御を行っていることになる。こ
の結果、図３に示すように、ガスタービン２による発電
量を含めた総発電量（実線でＡ示す）は、ボイラーのみ
で廃熱回収を行っていた従来の総発電量（点線Ａ´で示
す：図５と同じ）よりも増加することとなり、気温の上
がる夏場に需要が多くなる電力需要にも応えられるよう
になる。この場合、ボイラー１０で発生する熱量（実線
棒グラフで示す）は従来の発生熱量（点線棒グラフで示
す：図５と同じ）よりも少なくなるが、気温の上がる夏
場は熱量需要が下がるので、特に心配することはない。However, since the relative fluctuation amount V between the electric power demand and the heat quantity demand correlates with the temperature of the atmosphere used as the combustion air in the combustor 5, in the above-described control mainly by electric power, the atmospheric temperature This means that control is performed to increase the amount of power generated by the thermoelectric generator 11 according to the increase. As a result, as shown in FIG. 3, the total amount of power generation including the amount of power generation by the gas turbine 2 (shown by the solid line A) is the total amount of power generation that was conventionally performed by the boiler only (indicated by the dotted line A ′). (Shown: the same as in Fig. 5), it will be possible to meet the demand for electric power, which will increase in the summer when the temperature rises. In this case, the amount of heat generated by the boiler 10 (shown by the solid line bar graph) is smaller than the amount of heat generated by the conventional method (shown by the dotted line bar graph: the same as in FIG. 5), but the amount of heat is reduced in the summer when the temperature rises. There is nothing to do.
【００１６】一方、上記ステップＳ１で熱量が必要と判
断した場合は、処理をステップＳ５に移して熱量設定器
１８に必要な電力量を設定し、さらに前記ステップＳ３
でスイッチ２１を熱量設定器１８と調節制御器２０との
接続側に切替えて、熱量主体の制御を行う。この場合、
ガス量制御装置１７内の調節制御器２０は、ボイラー１
０で前記設定した蒸気または温水が得られるように、ガ
スタービン２の排気系６の各分岐管路６ａ、６ｂに設け
たダンパー１２、１３の開度を調節する。これにより、
熱電発電装置１１に供給される排ガス量と相対にボイラ
ー１０に供給される排ガス量の比率が高められ、ボイラ
ー１０による発生熱量が増加する。ここで、ボイラー１
０による発生熱量は熱量計２２により監視されており、
調節制御器２０は、この熱量計２２の信号に基づいて前
記熱量設定器１８で設定した熱量が得らるように各ダン
パー１２、１３の開度をフィードバック制御する。On the other hand, if it is determined in step S1 that the amount of heat is required, the process proceeds to step S5 to set the required amount of electric power in the amount-of-heat setting device 18, and then step S3.
The switch 21 is switched to the connection side of the heat quantity setting device 18 and the adjustment controller 20 to control mainly the heat quantity. in this case,
The adjustment controller 20 in the gas amount control device 17 is the boiler 1
The degree of opening of the dampers 12 and 13 provided in the respective branch pipes 6a and 6b of the exhaust system 6 of the gas turbine 2 is adjusted so that the set steam or hot water can be obtained at 0. This allows
The ratio of the amount of exhaust gas supplied to the thermoelectric power generator 11 to the amount of exhaust gas supplied to the boiler 10 is relatively increased, and the amount of heat generated by the boiler 10 is increased. Where the boiler 1
The amount of heat generated by 0 is monitored by the calorimeter 22,
The adjustment controller 20 feedback-controls the opening degrees of the dampers 12 and 13 so that the heat quantity set by the heat quantity setter 18 can be obtained based on the signal from the calorimeter 22.
【００１７】本実施の形態においては、危険防止のた
め、インターロック機構を設けて、各ダンパー１２、１
３が同時に全開または全閉とならないように配慮してい
る。また、ヒートショックを軽減するため、各ダンパー
１２、１３に除開機構を付設して、各ダンパー１２、１
３が急激に開動作しないように配慮している。In the present embodiment, in order to prevent danger, an interlock mechanism is provided and each damper 12, 1
Care is taken so that 3 does not open or close at the same time. Further, in order to reduce the heat shock, a release mechanism is attached to each of the dampers 12, 13 so that each of the dampers 12, 1,
Care is taken so that 3 does not open suddenly.
【００１８】なお、上記実施の形態においては、燃焼空
気として用いられる大気の温度上昇に応じて発電量を下
げるように運転管理しているガスタービン発電システム
の運転状況に合せて、発電主体の制御と熱量主体の制御
とを切替えるようにしているが、本発明は、このガスタ
ービン発電システムの運転状況とは無関係に、需要先の
要求に応じて、発電主体の制御と熱量主体の制御とを切
替えるようにしてもよいことはもちろんである。It should be noted that in the above-described embodiment, the power generation-based control is performed in accordance with the operating conditions of the gas turbine power generation system in which operation is controlled such that the power generation amount is reduced in accordance with the temperature rise of the atmosphere used as combustion air. However, the present invention switches between power generation-based control and heat amount-based control according to the demand of the customer regardless of the operating status of the gas turbine power generation system. Of course, switching may be performed.
【００１９】[0019]
【発明の効果】以上、説明したように、本発明に係るガ
スタービン発電システムの廃熱回収方法によれば、需要
の変動に応じて電力と熱量とをバランスよく生成でき、
総合熱効率の向上に大きく寄与するものとなる。As described above, according to the waste heat recovery method of the gas turbine power generation system of the present invention, it is possible to generate the electric power and the heat quantity in a well-balanced manner according to the fluctuation of the demand.
It will greatly contribute to the improvement of the total thermal efficiency.
【図１】本発明に廃熱回収方法を実行する廃熱回収シス
テムを組込んだガスタービン発電システムを示す模式図
である。FIG. 1 is a schematic diagram showing a gas turbine power generation system incorporating a waste heat recovery system for executing a waste heat recovery method according to the present invention.
【図２】本廃熱回収方法における制御フローを示すフロ
ーチャートである。FIG. 2 is a flowchart showing a control flow in this waste heat recovery method.
【図３】本廃熱回収方法を適用した場合の発電量と熱回
収量との月次変化を、従来の廃熱回収方法を適用した場
合と比較して示すグラフである。FIG. 3 is a graph showing monthly changes in the power generation amount and the heat recovery amount when the present waste heat recovery method is applied, in comparison with the case where the conventional waste heat recovery method is applied.
【図４】従来の廃熱回収システムを組込んだガスタービ
ン発電システムを示す模式図である。FIG. 4 is a schematic diagram showing a gas turbine power generation system incorporating a conventional waste heat recovery system.
【図５】従来の廃熱回収方法を適用した場合の発電量と
熱回収量との月次変化を示すグラフである。FIG. 5 is a graph showing monthly changes in the power generation amount and the heat recovery amount when the conventional waste heat recovery method is applied.
１ 発電機、 ２ ガスタービン ３ 圧縮機、 ５ 燃焼器 ６ 排ガス管路（排ガス系） ６ａ、６ｂ 分岐管路 １０ ボイラー １１ 熱電発電装置 １２、１３ ダンパー １７ ガス量制御装置 ２２ 熱量計 ２３ 電力計 1 generator, 2 gas turbine 3 compressors, 5 combustors 6 Exhaust gas pipeline (exhaust gas system) 6a, 6b Branch line 10 boilers 11 Thermoelectric generator 12, 13 damper 17 Gas amount control device 22 Calorimeter 23 Electricity meter
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ０２Ｇ 5/04 Ｆ０２Ｇ 5/04 Ｈ Ｌ Ｎ Ｓ Ｕ Ｆ２２Ｂ 1/18 Ｆ２２Ｂ 1/18 Ｃ Ｅ Ｐ Ｈ０１Ｌ 35/28 Ｈ０１Ｌ 35/28 Ｃ 35/30 35/30 35/32 35/32 Ｚ Ｈ０２Ｐ 9/04 Ｈ０２Ｐ 9/04 Ｆ (56)参考文献 特開 昭64−41620（ＪＰ，Ａ) 特開 平11−97750（ＪＰ，Ａ) 特開 平10−176602（ＪＰ，Ａ) 特開 平11−27969（ＪＰ，Ａ) 特開 平６−81639（ＪＰ，Ａ) 特開 平６−2540（ＪＰ，Ａ) 特開 平10−132495（ＪＰ，Ａ) 特開 平５−65807（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02C 6/00 - 6/18 F01D 15/10 F01K 23/10 F02G 5/04 F22B 1/18 H01L 35/28 - 35/32 H02N 11/00 H02P 9/04 Continuation of front page (51) Int.Cl. 7 Identification code FI F02G 5/04 F02G 5/04 H L N S U F22B 1/18 F22B 1/18 C EP H01L 35/28 H01L 35/28 C 35 / 30 35/30 35/32 35/32 Z H02P 9/04 H02P 9/04 F (56) Reference JP-A 64-41620 (JP, A) JP-A 11-97750 (JP, A) JP-A 10-176602 (JP, A) JP-A-11-27969 (JP, A) JP-A-6-81639 (JP, A) JP-A-6-2540 (JP, A) JP-A-10-132495 (JP, A) A) JP-A-5-65807 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) F02C 6/00-6/18 F01D 15/10 F01K 23/10 F02G 5/04 F22B 1/18 H01L 35/28-35/32 H02N 11/00 H02P 9/04
Claims (2)
電を行うガスタービン発電システムにおいて、前記ガス
タービンの排ガス系に、蒸気または温水を発生するボイ
ラーと熱電変換素子を内臓する熱電発電装置とを並設
し、電力需要と熱量需要との相対変動に応じて前記ボイ
ラーと前記熱電発電装置とに対する排ガスの分配比率を
制御することを特徴とするガスタービン発電システムの
廃熱回収方法。1. A gas turbine power generation system for generating electric power by rotating a gas turbine with combustion gas, wherein an exhaust gas system of the gas turbine is provided with a boiler for generating steam or hot water and a thermoelectric power generator including a thermoelectric conversion element. A waste heat recovery method for a gas turbine power generation system, characterized in that the distribution ratio of the exhaust gas to the boiler and the thermoelectric power generator is controlled according to the relative fluctuation between the electric power demand and the heat quantity demand.
量と熱電発電装置で発生した電力量との少なくとも一方
を検出し、この検出結果をボイラーと熱電発電装置とに
対する排ガスの分配比率の制御にフィードバックするこ
とを特徴とする請求項１に記載の廃熱回収方法。2. Detecting at least one of the amount of heat of steam or hot water generated in the boiler and the amount of electric power generated in the thermoelectric power generator, and feeding back the detection result to the control of the distribution ratio of the exhaust gas to the boiler and the thermoelectric power generator. The waste heat recovery method according to claim 1, wherein
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|---|---|---|---|
| JP2000167430A JP3526026B2 (en) | 2000-06-05 | 2000-06-05 | Waste heat recovery method for gas turbine power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000167430A JP3526026B2 (en) | 2000-06-05 | 2000-06-05 | Waste heat recovery method for gas turbine power generation system |
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| JP3526026B2 true JP3526026B2 (en) | 2004-05-10 |
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| JP2000167430A Expired - Fee Related JP3526026B2 (en) | 2000-06-05 | 2000-06-05 | Waste heat recovery method for gas turbine power generation system |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4901373B2 (en) * | 2006-08-31 | 2012-03-21 | 株式会社東芝 | In-house power generator |
| JP4929004B2 (en) * | 2007-03-23 | 2012-05-09 | 三菱重工業株式会社 | Gas turbine power generation system |
| DE102008023832A1 (en) * | 2008-05-15 | 2009-11-19 | Bayerische Motoren Werke Aktiengesellschaft | Cooling for a thermoelectric generator |
| JP2009293390A (en) * | 2008-06-02 | 2009-12-17 | Honda Motor Co Ltd | Gas turbine engine |
| JP5430465B2 (en) * | 2010-03-29 | 2014-02-26 | パナソニック株式会社 | Thermoelectric converter |
| US8578696B2 (en) | 2010-08-03 | 2013-11-12 | General Electric Company | Turbulated arrangement of thermoelectric elements for utilizing waste heat generated from turbine engine |
| DE102011081565A1 (en) * | 2011-08-25 | 2013-02-28 | Siemens Aktiengesellschaft | Gas turbine arrangement, power plant and method for its operation |
| WO2013141938A1 (en) | 2011-12-30 | 2013-09-26 | Rolls-Royce North American Technologies, Inc. | Gas turbine engine tip clearance control |
| WO2014033837A1 (en) * | 2012-08-28 | 2014-03-06 | 株式会社日立製作所 | Waste heat recovery boiler, method for controlling waste heat recovery boiler, and combined cycle power generation plant using same |
| JP5932685B2 (en) * | 2013-03-11 | 2016-06-08 | 東邦瓦斯株式会社 | Cogeneration equipment |
| RU190354U1 (en) * | 2018-10-24 | 2019-06-28 | Анатолий Петрович Черных | ELECTROGENERATING DEVICE ON THE BASIS OF THERMOELECTRICITY AND DETAILING OF GAS |
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2000
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