Process for generating electricity in a pressurized fluidized-bed combustor system

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:868071

Kasper, Stanley ^[1]

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1. Pittsburgh, PA

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.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by United State (Washington, DC)
• Patent Number(s): US 5067317
• OSTI ID: 868071
• Country of Publication: United States
• Language: English

Related Subjects

process
generating
electricity
pressurized
fluidized-bed
combustor
apparatus
gas
turbine
coal
fed
fuel
slurry
constituents
including
sulfur
sorbent
limestone
added
combusted
air
combustion
chamber
residual
captured
particulates
removed
flue
expands
electric
power
spent
cooled
heat
exchange
liquid
streams
condensate
returned
feed
sulfur sorbent
generating electric
liquid stream
pressurized fluidized
feed slurry
electric power
combustion chamber
heat exchange
gas turbine
flue gas
pressurized fluid
combustion air
bed combustor
generating electricity
liquid streams
pressurized fluidized-bed
fluidized-bed combustor
gas expands
pressurized combustion
/60/