# US 5,349,810 A · Humid air turbine (HAT) cycle power process > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,349,810 A - Document ID: US5349810A - Status: Granted - Kind: A - Application number: 08/048,051 - Filed: 1993-04-16 - Granted: 1994-09-27 - Earliest claimed: 1993-02-16 - Assignees: Nykomb Synergetics Aktiebolag - Inventors: Ingvar Landalv - Web page: https://patentgrep.com/patent/US5349810A ## CPC - F25J 3/04545: {for the gasification of solid or heavy liquid fuels, e.g. integrated gasification combined cycle [IGCC]} - F01K 21/047: {having at least one combustion gas turbine} - F01K 23/068: {in combination with an oxygen producing plant, e.g. an air separation plant} - F02C 3/28: using a separate gas producer for gasifying the fuel before combustion - F25J 3/04618: {for cooling an air stream fed to the air fractionation unit} - F25J 2230/04: Compressor cooling arrangement, e.g. inter- or after-stage cooling or condensate removal - Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT] - Y02E 20/18: Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS] - Y02T 10/12: Improving ICE efficiencies - F25J: LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE (cryogenic pumps F04B37/08; gas storage vessels, gas holders F17; filing vessels with, or discharging from vessels, compressed, liquefied or solidified gases F17C; refrigeration machines, plants, or systems F25B)} - F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D) - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A process for the production of power from a carbonaceous fuel comprising partially oxidizing the fuel with oxygen or an oxygen containing gas to yield a combustible gas stream and sensible heat, said sensible heat or a major part thereof being transferred to the power producing unit together with the combustible gas. The power producing unit is a humid air turbine cycle. ## Claims ### Claim 1 A process for the production of power from a carbonaceous fuel comprising partially oxidizing the fuel with oxygen or an oxygen containing gas to yield a combustible gas stream and sensible heat wherein said sensible heat or a major part thereof is transferred to a power producing unit with the combustible gas, said power producing unit being a humid air turbine cycle and wherein compression heat from an air compressor powered by a combustion turbine of the power producing unit is used to produce hot water which is used to humidify compressed combustion air before the air is introduced into a combustion turbine combustor of the power producing unit so that sensible heat available in the compressed air is utilized for generation of power in the combustion turbine. ### Claim 2 (depends on 1) A process according to claim 1 wherein the partial oxidation is carried out a pressure of at least 40 bars. ### Claim 3 (depends on 2) A process according to claim 2 wherein the partial oxidation is carried out a pressure of at least 60 bars. ### Claim 4 (depends on 3) A process according to claim 3 wherein steam is utilized to transfer a minor part of the sensible heat to the power producing unit. ### Claim 5 (depends on 2) A process according to claim 2 wherein steam is utilized a transfer a minor part of the sensible heat to the power producing unit. ### Claim 6 (depends on 1) A process according to claim 1 wherein steam is utilized to transfer a minor part of the sensible heat to the power producing unit. ### Claim 7 (depends on 4) A process according to claim 4 wherein sensible heat from inter and after coolers of at least one air separation unit compressor is used to saturate the combustible gas before said gas is transferred to the power producing unit. ### Claim 8 (depends on 3) A process according to claim 3 wherein sensible heat from inter and after coolers of at least one air separation unit compressor is used to saturate the combustible gas before said gas is transferred to the power producing unit. ### Claim 9 (depends on 2) A process according to claim 2 wherein sensible heat from inter and after coolers of at least one air separation unit compressor is used to saturate the combustible gas before said gas is transferred to the power producing unit. ### Claim 10 (depends on 1) A process according to claim 1 wherein sensible heat from inter and after coolers of at least one air separation unit compressor is used to saturate the combustible gas before said gas is transferred to the power producing unit. ### Claim 11 (depends on 1) A process according to claim 1 wherein sensible heat in exhaust gas of the combustion turbine of the power producing unit is used to produce additional hot water which is further used to humidify compressed combustion air before the air is introduced into the combustor of the power producing plant. ### Claim 12 (depends on 1) A process according to claim 1 wherein the process is conducted in the absence of a steam turbine in the power producing unit.