F - Mech Eng,Light,Heat,Weapons – 01 – K
Patent
F - Mech Eng,Light,Heat,Weapons
01
K
60/23
F01K 23/06 (2006.01) F02C 3/20 (2006.01) F02C 3/28 (2006.01) F23C 6/04 (2006.01)
Patent
CA 1297683
ABSTRACT OF THE DISCLOSURE: In a process of carrying out a combined gas turbine and steam turbine process, the efficiency is in- creased in that the fuel gas is produced at a temperature from 900 to 1100°C in a circulating fluidized bed by a gasification of 70 to 95% by weight of the carbon contained in the carbonaceous material and is treated at a temperature from 850 to 950°C with suspended solids consisting of calcium hydroxide, calcium oxide and/or calcium carbonate- containing solids to remove polluants. The main portion of said fuel gas is burnt to produce a gas which is used to operate the gas turbine and which contains at least 5% by volume oxygen and is at a temperature of at least 1000°C. The combustion of the carbonaceous gasification residue to produce process steam is carried out in another circulating fluidized bed at a temperature from 800 to 950°C under near- stoichiometric conditions by a treatment with oxygen- containing gases, which are supplied on different levels in at least two partial streams and mainly consist of exhaust gas from the gas turbine. The desulfurized fuel gas is preferably cooled to a temperature in the range from 350 to 600°C and is freed from halides.
532916
Graf Rolf
Hirsch Martin
Plass Ludolf
Reh Lothar
Metallgesellschaft Aktiengesellschaft
Robic
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