Method of low temperature heat utilization for atmospheric pressure coal gasification

Patent · Tue Dec 16 04:00:00 EST 1980

OSTI ID:6479342

Waryasz, R E

A combined cycle power plant having a steam generator and a gas turbine which makes use of a high temperature liquid couplant, or heat exchange arrangement, and a low temperature liquid couplant, or heat exchange arrangement, for maximizing use of the heat available in the power plant. The high temperature liquid couplant extracts heat from the gases leaving a coal gasifier, and is used in (1) a high temperature air heater for the gasifier , and (2) a high temperature fuel preheater of a steam generator. The low temperature liquid couplant extracts heat from the exhaust gases of the steam generator, and is used as (1) preheat for the high temperature liquid couplant, (2) low temperature air preheater for the gasifier, (3) a booster fan inlet heater, and (4) a low temperature fuel preheater for the steam generator.

• Assignee: Combustion Engineering Inc
• Patent Number(s): US 4238923
• OSTI ID: 6479342
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200100* -- Fossil-Fueled Power Plants-- Power Plants & Power Generation
BOILERS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
DESIGN
GAS TURBINES
GASIFICATION
MACHINERY
POWER PLANTS
STEAM GENERATORS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VAPOR GENERATORS