Process for generating electricity in a pressurized fluidized-be

Details Process for generating electricity in a pressurized fluidized-be Process for generating electricity in a pressurized fluidized-be

1990-02-26

1991-11-26

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39464, F02C 326

Patent

active

050673173

ABSTRACT:
A process and apparatus for generating electricity using a gas turbine as part of a pressurized fluidized-bed combustor system wherein coal is fed as a fuel in a slurry in which other constituents, including a sulfur sorbent such as limestone, are added. The coal is combusted with air in a pressurized combustion chamber wherein most of the residual sulfur in the coal is captured by the sulfur sorbent. After particulates are removed from the flue gas, the gas expands in a turbine, thereby generating electric power. The spent flue gas is cooled by heat exchange with system combustion air and/or system liquid streams, and the condensate is returned to the feed slurry.

REFERENCES:
patent: 2735265 (1956-02-01), Eastman
patent: 4377066 (1983-03-01), Dickinson
patent: 4453474 (1984-06-01), Lewis
patent: 4495872 (1985-01-01), Shigaki
patent: 4499857 (1985-02-01), Wormser
patent: 4542621 (1985-09-01), Andersson et al.
patent: 4708068 (1987-11-01), Hattori et al.

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