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Title: Integrated air separation plant-integrated gasification combined cycle power generator

This patent describes an integrated gasification combined cycle power generation system, comprising an air separation unit wherein air is compressed, cooled, and separated into an oxygen and nitrogen enriched fractions, a gasification system for generating a fuel gas, an air compressor system for supplying compressed air for use in combusting the fuel gas, a combustion zone for effecting combustion of the compressed air and the fuel gas, and a gas turbine for effecting the generation of power from the resulting combusted gases from the combustion zone in the combined cycle power generation system. It comprises independently compressing feed air to the air separation unit to pressures of from 8 to 20 bar from the compressor system used to compress air for the combustion zone; cryogenically separating the air in the air separation unit having at least one distillation column operating at pressures of between 8 and 20 bar and producing an oxygen enriched fraction consisting of low purity oxygen, and; utilizing at least a portion of the low purity oxygen for effecting gasification of a carbon containing fuel source by partial oxidation in the gasification system and thereby generating a fuel gas stream; removing at least a portion of amore » nitrogen enriched fraction from the air separation unit and boosting its pressures to a pressure substantially equal to that of the fuel gas stream; and expanding at least another portion of the nitrogen enriched fraction in an expansion engine.« less
Authors:
;
Publication Date:
OSTI Identifier:
5284971
Report Number(s):
US 5081845; A
PPN: US 7-547570
Resource Type:
Patent
Resource Relation:
Patent File Date: 2 Jul 1990
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AIR; SEPARATION PROCESSES; GAS GENERATORS; SEPARATION EQUIPMENT; CARBON; COMBINED CYCLES; COMBUSTION; COMPRESSION; COOLING; CRYOGENICS; FUEL GAS; GAS TURBINES; GASIFICATION; MEDIUM PRESSURE; NITROGEN; OXYGEN; POWER GENERATION; CHEMICAL REACTIONS; ELEMENTS; EQUIPMENT; FLUIDS; FUELS; GAS FUELS; GASES; MACHINERY; NONMETALS; OXIDATION; THERMOCHEMICAL PROCESSES; THERMODYNAMIC CYCLES; TURBINES; TURBOMACHINERY 200108* -- Fossil-Fueled Power Plants-- Fuels-- (1980-); 200102 -- Fossil-Fueled Power Plants-- Power Cycles; 400800 -- Combustion, Pyrolysis, & High-Temperature Chemistry