# US 2008/0184709 A1 · Turbine power generation using lignin-based fuel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0184709 A1 - Document ID: US20080184709A1 - Status: Published application - Kind: A1 - Application number: 11/672,265 - Filed: 2007-02-07 - Published: 2008-08-07 - Earliest claimed: 2007-02-07 - Inventors: DEAN W. ROWELL - Web page: https://patentgrep.com/patent/US20080184709A1 ## CPC - C10L 5/44: on vegetable substances - F02C 3/26: the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension - F02C 7/08: Heating air supply before combustion, e.g. by exhaust gases - F23G 2209/26: Biowaste - F23G 2900/50208: Biologic treatment before burning, e.g. biogas generation - Y02E 50/10: Biofuels, e.g. bio-diesel - Y02E 50/30: Fuel from waste, e.g. synthetic alcohol or diesel - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS - 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) - F23G: CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A method of generating power and a fuel for use in a gas turbogenerator power system are disclosed. The method comprises injecting lignin residue derived from the enzymatic hydrolysis of a biomass feedstock and natural gas into a combustor of a gas turbine power generator; combusting the lignin residue and natural gas with compressed air; inputting the resultant gases into a gas turbine to rotate a turbine shaft and generate rotational energy; and converting the rotational energy into electrical energy. The lignin residue is preferably derived from a process of simultaneous sachrification and fermentation of the biomass feedstock. The lignin residue is preferably transported to the combustor in a pipeline with pressurized air. The fuel comprises a mixture of lignin residue derived from the enzymatic hydrolysis of a biomass feedstock and natural gas. Preferably, the lignin residue is derived from a process for the simultaneous sachrification and fermentation of the biomass feedstock. The lignin residue comprises about 2 to about 70 percent, preferably about 25 to about 65 percent, most preferably about 40 to about 60 percent, by weight of the total amount of lignin residue and natural gas in the mixture. ## Claims ### Claim 1 A method of generating power comprising: injecting lignin residue derived from the enzymatic hydrolysis of a biomass feedstock and natural gas into a combustor of a gas turbine power generator; combusting the lignin residue and natural gas with compressed air; inputting the resultant gases into a gas turbine to rotate a turbine shaft and generate rotational energy; and converting the rotational energy into electrical energy. ### Claim 2 (depends on 1) The method according to claim 1, wherein the lignin residue is derived from a process of simultaneous sachrification and fermentation of the biomass feedstock. ### Claim 3 (depends on 1) The method according to claim 1, wherein the lignin residue comprises about 2 to about 70 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 4 (depends on 1) The method according to claim 1, wherein the lignin residue comprises about 25 to about 65 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 5 (depends on 1) The method according to claim 1, wherein the lignin residue comprises about 40 to about 60 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 6 (depends on 1) The method according to claim 1, wherein the lignin residue has a moisture content of about 20 percent or less. ### Claim 7 (depends on 1) The method according to claim 1, wherein the lignin residue has a moisture content of about 10 percent or less. ### Claim 8 (depends on 1) The method according to claim 1, further comprising the step of: transporting the lignin residue to the combustor. ### Claim 9 (depends on 8) The method according to claim 8, wherein the lignin residue is transported with pressurized air. ### Claim 10 A fuel for use in a gas turbogenerator comprising a mixture of lignin residue derived from the enzymatic hydrolysis of a biomass feedstock and natural gas. ### Claim 11 (depends on 10) The fuel according to claim 10, wherein the lignin residue is derived from a process of simultaneous sachrification and fermentation of the biomass feedstock. ### Claim 12 (depends on 10) The fuel according to claim 10, wherein the lignin residue comprises about 2 to about 70 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 13 (depends on 10) The fuel according to claim 10, wherein the lignin residue comprises about 25 to about 65 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 14 (depends on 10) The fuel according to claim 10, wherein the lignin residue comprises about 40 to about 60 percent by weight of the total amount of lignin residue and natural gas injected into the combustor. ### Claim 15 (depends on 10) The fuel according to claim 10, wherein the lignin residue has a moisture content of about 20 percent or less. ### Claim 16 (depends on 10) The fuel according to claim 10, wherein the lignin residue has a moisture content of about 10 percent or less.