JP5460040B2 - 排気ガスの再循環とco2の分離を行う複合サイクル発電所及びそのような複合サイクル発電所の動作方法 - Google Patents
排気ガスの再循環とco2の分離を行う複合サイクル発電所及びそのような複合サイクル発電所の動作方法 Download PDFInfo
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- 238000000926 separation method Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 39
- 238000011084 recovery Methods 0.000 claims description 29
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- 238000000605 extraction Methods 0.000 claims description 6
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- 230000003134 recirculating effect Effects 0.000 claims 3
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- 230000007423 decrease Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/34—Gas-turbine plants characterised by the use of combustion products as the working fluid with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/006—Open cycle gas-turbine in which the working fluid is expanded to a pressure below the atmospheric pressure and then compressed to atmospheric pressure
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- 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]
-
- 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
- Y02E20/32—Direct CO2 mitigation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
・排気ガスの再循環率の低減又は再循環率の完全にゼロへの低下によって、温度低下の防止と設備コスト(排気ガスラインと熱交換機)の削減が実現される。
・補助燃焼の結果、CO2濃度が上昇するとともに、そのためにCO2分離時の効率が上昇する。
・補助燃焼の結果、CO2の分離による内部電力損失を補償することができる。
・排気ガスの再循環率の低減又は再循環率の完全にゼロへの低下の結果、燃焼室14及びタービン13内の酸素量が上昇することとなる。それによって、保護酸化物層及び低い酸素量による燃焼のリスクが軽減される。
1.流体質量が増加するために、分離塔を貫流する時の排気ガスの流速が速くなり、その結果溶剤によるCO2反応時間が短くなる。
2.溶剤内に吸収することができるCO2の量には限界が有るので、追加されたCO2量を吸収するのに十分な溶剤が無い。
・システムが柔軟となり、出力電力とCO2分離効率の間のバランスをとることが可能となる。
・より多くの蒸気が生成されるために、蒸気タービンの出力が増加することによって、出力電力の増加を実現することができる。
・入口での温度が低下するために、ガスタービンの出力増加により出力電力の一層の増加を実現することができる。
11 ガスタービン
12 コンプレッサ
13 タービン
14 燃焼室
15 空気入口
16 熱回収蒸気発生器
17 補助燃焼部
18 生蒸気出口
19 蒸気タービン
20 給水入口
21 排気ガスバイパスライン
22,29 熱交換機
23 蒸気抽出ライン
24 コンプレッサ
25 CO2分離プラント
26 排気ガスライン
27 CO2出口
28 排気ガス再循環ライン
30,34 燃料供給ライン
31,32 制御弁
33 制御ユニット
34 水/蒸気サイクル
35 凝縮物再循環ライン
Claims (11)
- ガスタービン(11)と、その下流でガスタービン(11)と接続された、蒸気タービン(19)に蒸気を供給する熱回収蒸気発生器(16)と、ガスタービン(11)の排気から熱回収蒸気発生器(16)を通って流れる排気ガスの一部をガスタービン(11)の入口に再循環させる排気ガス再循環ライン(28)と、排気ガスの再循環されなかった部分から、その部分に含まれるCO2 を分離して、それをCO2 出口に供給するCO2 分離プラント(25)とを備えた複合サイクル発電所(10,10’)において、
炭素質燃料を燃焼させることによって、CO2 成分を含む追加の排気ガスを生成して、その排気ガスを熱回収蒸気発生器(16)を通して移送する補助燃焼部(17)が、熱回収蒸気発生器(16)と関連付けられていることと、
前記の排気ガスが、熱回収蒸気発生器(16)から排出された後で、かつ排気ガス再循環ライン(28)及びCO 2 分離プラント(25)に供給される前に、第一の熱交換機(22)を通して移送されることと、
排気ガスバイパスライン(21)が、熱回収蒸気発生器(16)と第一の熱交換機(22)の間から分岐していることと、
を特徴とする複合サイクル発電所。 - 補助燃焼部(17)が、熱回収蒸気発生器(16)に統合されていることを特徴とする請求項1に記載の複合サイクル発電所。
- 第二の熱交換機(29)が、排気ガス再循環ライン(28)内に配置されていることを特徴とする請求項1又は2に記載の複合サイクル発電所。
- 当該の排気ガス用のコンプレッサ(24)が、CO2 分離プラント(25)の上流に配置されていることを特徴とする請求項1から3までのいずれか一つに記載の複合サイクル発電所。
- 蒸気が、蒸気タービン(19)又は熱回収蒸気発生器(16)から蒸気抽出ライン(23)を経由してCO2 分離プラント(25)に誘導されることを特徴とする請求項1から4までのいずれか一つに記載の複合サイクル発電所。
- 当該の再循環率を調整するための第一の手段(32)が、排気ガス再循環ライン(28)内に配置されていることを特徴とする請求項1から5までのいずれか一つに記載の複合サイクル発電所。
- 当該の再循環率を調整するための第一の手段(32)が、制御弁(32)で構成されていることを特徴とする請求項6に記載の複合サイクル発電所。
- 第二の手段(31)が、補助燃焼部(17)を制御するために配備されていることを特徴とする請求項6又は7に記載の複合サイクル発電所。
- 請求項1から8までのいずれか一つに記載の複合サイクル発電所の動作方法において、 再循環させる排気ガスの量と補助燃焼部(17)の出力の中の一つ以上を一定に保持することと、
再循環させる排気ガスの量をゼロに保持することと、
を特徴とする方法。 - 請求項1から8までのいずれか一つに記載の複合サイクル発電所の動作方法において、 再循環させる排気ガスの量と補助燃焼部(17)の出力の中の一つ以上を逆向きに変化させることを特徴とする方法。
- 複合サイクル発電所(10’)の出力を一時的に増加するために、再循環させる排気ガスの量を低減するか、補助燃焼部(17)の出力を増加するか、或いはその両方を行うことを特徴とする請求項10に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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CH18892007 | 2007-12-06 | ||
CH01889/07 | 2007-12-06 |
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JP2009138748A JP2009138748A (ja) | 2009-06-25 |
JP5460040B2 true JP5460040B2 (ja) | 2014-04-02 |
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JP2008310547A Expired - Fee Related JP5460040B2 (ja) | 2007-12-06 | 2008-12-05 | 排気ガスの再循環とco2の分離を行う複合サイクル発電所及びそのような複合サイクル発電所の動作方法 |
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US (1) | US8424282B2 (ja) |
EP (1) | EP2067941A3 (ja) |
JP (1) | JP5460040B2 (ja) |
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2008
- 2008-11-13 EP EP08169018.2A patent/EP2067941A3/de not_active Withdrawn
- 2008-11-14 US US12/271,137 patent/US8424282B2/en not_active Expired - Fee Related
- 2008-12-05 JP JP2008310547A patent/JP5460040B2/ja not_active Expired - Fee Related
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US20090145127A1 (en) | 2009-06-11 |
JP2009138748A (ja) | 2009-06-25 |
US8424282B2 (en) | 2013-04-23 |
EP2067941A3 (de) | 2013-06-26 |
EP2067941A2 (de) | 2009-06-10 |
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