US5265410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power generation system
Assignee: Mitsubishi Heavy Industries Ltd
•
Filing: 1991-03-29
•
Granted: 1993-11-30
•
Expires: 2011-03-29
Abstract
Abstract A coal gasification composite power generation system including a primary combustor (2) for effecting high temperature combustion of coal fuel (8) under a reducing condition by compressed air or oxygen supplied from a compressor (1), a secondary combustor (3) for effecting complete combustion of the resulting product gas of the primary combustor, the secondary combustor (3) being supplied with the primary combustor product gas, air or oxygen for complete burning of the primary combustor product gas and an additive gas for controlling the combustion gas temperature in the secondary combustor consisting either of steam or carbon dioxide, a gas turbine (4) for driving the compressor (1) and driven by a working fluid consisting of the resulting combustion gas from the secondary combustor. Disposed in series downstream of the gas turbine are a waste heat system generator (5, 18) a desulfurizer (6) and a condenser (7) for separating CO 2 and H 2 O from the exhaust gas of the gas turbine (4). Either CO 2 or H 2 O, converted to steam in the steam generator (5), is fed to the secondary combustor for controlling the temperature of the combustion gas therein.
Inventors
- 👤 Masatoshi Hisatome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:25
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/723; C10K; C10K1/00; C10K1/002; C10K1/003; C10K1/004; C10K1/02; F; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/067; F01K23/068; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/16; C10J2300/1603; C10J2300/1606; C10J2300/164; C10J2300/1643; C10J2300/165; C10J2300/1671; C10J2300/1687; C10J2300/18; C10J2300/1861; C10J2300/1884; Y; Y02; Y02E; Y02E20/00; Y02E20/16; Y02E20/18; Y02E20/32; Y02E20/34; Y02P; Y02P20/00; Y02P20/10; Y02P20/129; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
342 words
A power generation system comprising: primary combustor means for high temperature combustion of coal fuel under a reducing condition and producing product gas; means for supplying coal fuel to said primary combustor means; compressor means having an outlet for supplying a fluid selected from the group consisting of air and oxygen to produce a reducing condition in said primary combustor means; secondary combustor means for producing complete combustion of said product gas from said primary combustor means; first duct means for conducting said product gas from said primary combustor means to said secondary combustor means; second duct means connected between said compressor means outlet and said primary and secondary combustor means for conducting said fluid from said outlet of said compressor means to said primary combustor means and said secondary combustor means; heat exchanger means in said first and second duct means so that said product gas from said primary combustor means heats said fluid in said second duct means passing from said outlet of said compressor means to said primary and secondary combustor means; gas turbine means operatively connected to said compressor means for driving said compressor means; third duct means connected between an outlet of said secondary combustor means and an inlet of said gas turbine means for conducting combustion gas from said secondary combustor means to said gas turbine means; waste heat steam generator means having an inlet connected to an outlet of said gas turbine means and an outlet; desulfurization means having an inlet connected to said outlet of said waste heat steam generator means and an outlet; condenser means having an inlet connected to said outlet of said desulfurization means for receiving said combustion gas from said desulfurization means and for separating carbon dioxide and condensed water therein; and further duct means for conducting an additive fluid from said condenser means to said secondary combustor means for controlling the temperature of said combustion gas from said secondary combustor means, said additive fluid from said condenser means being selected from the group consisting of carbon dioxide and water.
Claim 2
Dependent Claim
342 words
A power generation system comprising: primary combustor means for high temperature combustion of coal fuel under a reducing condition and producing product gas; means for supplying coal fuel to said primary combustor means; compressor means having an outlet for supplying a fluid selected from the group consisting of air and oxygen to produce a reducing condition in said primary combustor means; secondary combustor means for producing complete combustion of said product gas from said primary combustor means; first duct means for conducting said product gas from said primary combustor means to said secondary combustor means; second duct means connected between said compressor means outlet and said primary and secondary combustor means for conducting said fluid from said outlet of said compressor means to said primary combustor means and said secondary combustor means; heat exchanger means in said first and second duct means so that said product gas from said primary combustor means heats said fluid in said second duct means passing from said outlet of said compressor means to said primary and secondary combustor means; gas turbine means operatively connected to said compressor means for driving said compressor means; third duct means connected between an outlet of said secondary combustor means and an inlet of said gas turbine means for conducting combustion gas from said secondary combustor means to said gas turbine means; waste heat steam generator means having an inlet connected to an outlet of said gas turbine means and an outlet; desulfurization means having an inlet connected to said outlet of said waste heat steam generator means and an outlet; condenser means having an inlet connected to said outlet of said desulfurization means for receiving said combustion gas from said desulfurization means and for separating carbon dioxide and condensed water therein; and further duct means for conducting an additive fluid from said condenser means to said secondary combustor means for controlling the temperature of said combustion gas from said secondary combustor means, said additive fluid from said condenser means being selected from the group consisting of carbon dioxide and water.
Claim 3
Dependent Claim
82 words
A power generation system as claimed in claim 1 wherein: said further duct means has a first end connected to a condensate outlet of said condenser means, passes through said waste heat steam generator means in heat exchange relationship with said combustion gas and has a second end connected to said secondary combustor means so that said additive fluid comprises condensed water from said condenser means converted to steam in said waste heat steam generator means for serving as said additive fluid.
Claim 4
Dependent Claim
38 words
A power generation system as claimed in claim 2, and further comprising: a dust removal means in said first duct means for removing dust from said product gas between said primary combustor means and said secondary combustor means.
Claim 5
Dependent Claim
31 words
A power generation system as claimed in claim 3 wherein: said heat exchanger means is positioned in said first duct means between said primary combustor means and said dust removal means.
Claim 6
Dependent Claim
51 words
A power generation system as claimed in claim 1 wherein: said further duct means has one end connected to an outlet of said condenser means for said carbon dioxide and a second end connected to said secondary combustor means so that said additive fluid comprises carbon dioxide from said condenser means.
Claim 7
Dependent Claim
38 words
A power generation system as claimed in claim 5, and further comprising: a dust removal means in said first duct means for removing dust from said product gas between said primary combustor means and said secondary combustor means.
Claim 8
Dependent Claim
31 words
A power generation system as claimed in claim 6 wherein: said heat exchanger means is positioned in said first duct means between said primary combustor means and said dust removal means.
Claim 9
Dependent Claim
38 words
A power generation system as claimed in claim 1, and further comprising: a dust removal means in said first duct means for removing dust from said product gas between said primary combustor means and said secondary combustor means.
Claim 10
Dependent Claim
31 words
A power generation system as claimed in claim 8 wherein: said heat exchanger means is positioned in said first duct means between said primary combustor means and said dust removal means.
Claim 11
Dependent Claim
55 words
The power generation system as claimed in claim 1, wherein: said further duct means has one end connected to a carbon dioxide outlet of said condenser means and a second end connected to a gas inlet of said compressor means, so that said carbon dioxide from said condenser means is compressed in said compressor means.
Claim 12
Dependent Claim
38 words
A power generation system as claimed in claim 10, and further comprising: a dust removal means in said first duct means for removing dust from said product gas between said primary combustor means and said secondary combustor means.
Claim 13
Dependent Claim
83 words
A power generation system as claimed in claim 11 and further comprising: steam generating conduits in said waste heat steam generator; auxiliary turbine means operatively connected to said steam generating conduits for driving said auxiliary turbine means; auxiliary condenser means operatively connected to an outlet of said auxiliary steam turbine means for condensing steam from said auxiliary steam turbine means; and pump means for pumping said condensate from said auxiliary condenser means to said steam generating conduits in said waste heat steam generator.
References Cited (Backward Citations)
US2706150A
Cited
US2714670A
Cited
US3101592A
Cited
GB1104075A
Cited
US3359723A
Cited
US3657879A
Cited
GB1298434A
Cited
US4212160A
Cited
US4250704A
Cited
US4499721A
Cited
US4569194A
Cited
US4489562A
Cited
EP0184137A1
Cited
US4785622A
Cited
US4667467A
Cited
US4677829A
Cited
GB2191215A
Cited
US4884396A
Cited
US5079909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |