EP 0334935 B1 19930113 - GAS-STEAM GENERATING POWER PLANT
Title (en)
GAS-STEAM GENERATING POWER PLANT
Publication
Application
Priority
DE 3734959 A 19871015
Abstract (en)
[origin: WO8903471A1] A gas-steam generating power plant has at least one high-pressure steam generator (1) with a steam circuit, in which heat and flue gases are produced by combustion of a fuel (K) in a pressurized furnace (2), at least one heating surface (3, 21) connected to the furnace and through which heat from the furnace is transferred directly to the steam circuit, at least one steam turbine (5; 5a, 5b) connected downstream to the heating surface (3; 21), and at least one gas turbine (14; 34) connected to the flue gas side of the furnace (2) for work-performing expansion of the flue gases. To improve the efficiency, at least partially expanded steam (16; 30; 31) is withdrawn from the steam turbine (5; 5a, 5b) during quasi-stoichiometric combustion of the fuel (K) in the furnace and an equivalent amount of water is fed (19) into the steam circuit. Said steam is introduced directly into the furnace (2) at a presure higher than that prevailing in the furnace, heated to the highest possible furnace temperature, and then expanded, together with the flue gas, in the gas turbine (14; 34).
IPC 1-7
IPC 8 full level
F01K 21/04 (2006.01); F01K 23/06 (2006.01)
CPC (source: EP)
F01K 21/042 (2013.01); F01K 23/062 (2013.01)
Designated contracting state (EPC)
AT DE GB IT NL SE
DOCDB simple family (publication)
WO 8903471 A1 19890420; AT E84600 T1 19930115; DE 3734959 A1 19890713; DE 3734959 C2 19900531; DE 3877557 D1 19930225; EP 0334935 A1 19891004; EP 0334935 B1 19930113
DOCDB simple family (application)
EP 8800920 W 19881013; AT 88908952 T 19881013; DE 3734959 A 19871015; DE 3877557 T 19881013; EP 88908952 A 19881013