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1. (WO2010072710) POWER PLANT WITH CO2 CAPTURE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/072710 International Application No.: PCT/EP2009/067630
Publication Date: 01.07.2010 International Filing Date: 21.12.2009
IPC:
F01K 23/10 (2006.01) ,F02D 21/04 (2006.01) ,F02C 3/34 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
K
STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
23
Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
02
the engine cycles being thermally coupled
06
combustion heat from one cycle heating the fluid in another cycle
10
with exhaust fluid of one cycle heating the fluid in another cycle
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
21
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
02
peculiar to oxygen-fed engines
04
with circulation of exhaust gases in closed or semi-closed circuits
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
C
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3
Gas-turbine plants characterised by the use of combustion products as the working fluid
34
with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
Applicants:
ALSTOM TECHNOLOGY LTD [CH/CH]; Brown Boveri Strasse 7 CH-Baden 5400, CH (AllExceptUS)
LI, Hongtao [CN/CH]; CH (UsOnly)
HOFFMANN, Jürgen [DE/CH]; CH (UsOnly)
NAGEL, Holger [DE/DE]; DE (UsOnly)
DROUX, Francois [CH/CH]; CH (UsOnly)
MAHIEUX, Celine [FR/CH]; CH (UsOnly)
RUCHTI, Christoph [CH/CH]; CH (UsOnly)
WIRSUM, Manfred [DE/CH]; CH (UsOnly)
Inventors:
LI, Hongtao; CH
HOFFMANN, Jürgen; CH
NAGEL, Holger; DE
DROUX, Francois; CH
MAHIEUX, Celine; CH
RUCHTI, Christoph; CH
WIRSUM, Manfred; CH
Common
Representative:
ALSTOM TECHNOLOGY LTD; CHTI Intellectual Property Brown Boveri Str. 7/664/2 CH-Baden 5401, CH
Priority Data:
08172886.724.12.2008EP
Title (EN) POWER PLANT WITH CO2 CAPTURE
(FR) CENTRALE ÉLECTRIQUE AVEC CAPTURE DU CO2
Abstract:
(EN) Since CO2 is identified as a main greenhouse gas, its capture and storage is essential to control global warming. Flexible, optimized operation of CCPPs (combined cycle power plants) with a CO2 capture system (18) will increase the competitiveness of CCPPs designed for CO2 capture and will allow earlier introduction of this kind of plants. The main objective of the present invention is to provide a method for the optimized operation of a CCPP with flue gas recirculation and CO2 capture system (18) as well as a plant designed to operate according to this method. To this end a combination of two parameters to optimize the overall plant efficiency is proposed. These are CO2 concentration in the flue gases, and the re- cooling temperature of the recirculated flue gases. Additionally it is found to be advantageous to control the flue gas flow, which is sent to the CO2 capture system (18). These parameters are given as functions over load to optimize the overall plant efficiency including the CO2 capture system (18). Besides the method a power plant designed to operate according to this method is subject of the present invention. Further, admixing of oxygen or oxygen enriched air to the gas turbine inlet gases (3) to enhance operatability is proposed.
(FR) Le CO2 étant identifié comme un des principaux gaz à effet de serre, sa capture et son stockage sont essentiels pour maîtriser le réchauffement planétaire. L'exploitation souple et optimisée de centrales électriques à cycle combiné (combined cycle power plants, CCPP) munies d'un système (18) de capture du CO2 est appelée à accroître la compétitivité des CCPP conçues pour la capture du CO2 et à permettre une introduction anticipée de ce type de centrales. La présente invention a pour principaux objets un procédé d'exploitation optimisée d'une CCPP munie d'un système (18) de recyclage des gaz de combustion et de capture du CO2, ainsi qu'une centrale conçue pour fonctionner selon ce procédé. À cette fin, on propose une combinaison de deux paramètres pour optimiser le rendement global de la centrale, à savoir la concentration de CO2 dans les gaz de combustion et la température de refroidissement des gaz de combustion recyclés. De plus, il s'avère avantageux de réguler le débit des gaz de combustion envoyés vers le système (18) de capture du CO2. Ces paramètres sont fournis en tant que fonctions de la charge afin d'optimiser le rendement global de la centrale incluant le système (18) de capture du CO2. En dehors du procédé, une centrale électrique conçue pour fonctionner selon ce procédé constitue l'objet de la présente invention. On propose en outre l'adjonction d'oxygène ou d'air enrichi en oxygène aux gaz (3) d'admission des turbines à gaz afin d'améliorer l'aptitude à l'exploitation.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2368022JP2012514151CN102265004CA2747844IN5060/DELNP/2011