System and method for generation of high pressure air in an integrated gasification combined cycle system
AssigneeSiemens Energy, Inc.
InventorTerrence B. Sullivan
Life of this patent
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Abstract
An integrated gasification combined cycle system. In one embodiment (FIG. 2) a system (200) includes an ion transport membrane air separation unit (210) for producing oxygen-enriched gas (209) and oxygen-depleted air (227), a gasification system (5) for generating syngas with the oxygen-enriched gas (209), a gas combustor (234) for reacting the syngas (224), and a subsystem configured to provide a first stream of air to the combustor (234) at a first pressure and to provide a second stream of air to the air separation unit (210) at a second pressure greater than the first pressure. The subsystem includes a compressor (230) having multi-pressure outlets (203, 204).
Claims8
1-19. (canceled)
A method of operating an integrated gasification combined cycle power generation system, comprising the steps of:
- providing a compressor having at least two multi-pressure outlets;
- delivering a first stream of air at a first pressure from a first of the outlets;
- delivering a second stream of air at a second pressure greater than the first pressure from a second of the outlets;
- producing a stream of oxygen-enriched gas and a stream of oxygen-depleted air from the second stream of air;
- generating syngas by reacting a carbonaceous fuel with the oxygen-enriched gas;
- and
- combusting a mixture comprising the syngas and air from the first stream of air in a combustor to generate power.
A method of operating an integrated gasification combined cycle power generation system, comprising the steps of:
- producing a first stream of air at a first pressure;
- producing a stream of oxygen-enriched gas and a stream of oxygen-depleted air from a first portion of the first stream of air;
- producing a second stream of air at a second pressure lower than the first pressure from a portion of the first stream of air;
- generating syngas by reacting a carbonaceous fuel with the oxygen-enriched gas;
- and
- combusting a mixture comprising the syngas and air of the second stream of air in a combustor to generate power.
Dependencies are inferred from the claim text.