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US 12,428,987 B1Granted
Biochar system and method in stoichiometric exhaust gas recirculation power plant
AssigneeGE Infrastructure Technology LLC
InventorJoel Meador Hall
Life of this patent
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Abstract
A system includes a gas turbine system having a compressor, a combustor, and a turbine, wherein the combustor is configured to combust fuel and oxidant in a substantially stoichiometric equivalence ratio, phi (ϕ), of between 0.95 to 1.05. The system further includes an exhaust gas recirculation (EGR) system configured to recirculate an exhaust gas from the turbine to an intake into the compressor. The system further includes a biochar pyrolysis reactor configured to heat a biomass feedstock to cause a pyrolysis reaction of the biomass feedstock using heat from the exhaust gas to generate a biochar and a syngas.
Claims22
A system, comprising:
- a gas turbine system having a compressor, a combustor, and a turbine, wherein the combustor is configured to combust fuel and oxidant in a substantially stoichiometric equivalence ratio, phi (ϕ), of between 0.95 to 1.05;
- an exhaust gas recirculation (EGR) system configured to recirculate an exhaust gas from the turbine to an intake into the compressor;
- and
- a biochar pyrolysis reactor configured to heat a biomass feedstock to cause a pyrolysis reaction of the biomass feedstock using heat from the exhaust gas to generate a biochar and a syngas, wherein the system comprises at least one of:
- a duct burner configured to burn the syngas in a mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor to heat the exhaust gas;
- a nitrogen selective membrane configured to separate nitrogen and the syngas from the exhaust gas in the mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor;
- or
- a biochar sorbent system configured to adsorb an undesirable gas from the exhaust gas into the biochar to generate a treated gas and an enriched biochar;
- or a combination thereof.
6 more elements
A method, comprising:
- combusting fuel with oxidant in a substantially stoichiometric equivalence ratio, phi (ϕ), of between 0.95 to 1.05 in a combustor of a gas turbine system, wherein the gas turbine system comprises a compressor, the combustor, and a turbine;
- recirculating an exhaust gas from the turbine to an intake into the compressor via an exhaust gas recirculation (EGR) system;
- and
- heating a biomass feedstock in a biochar pyrolysis reactor to cause a pyrolysis reaction of the biomass feedstock using heat from the exhaust gas to generate a biochar and a syngas, wherein the method comprises at least one of:
- burning the syngas in a mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor to heat the exhaust gas via a duct burner
- separating nitrogen and the syngas from the exhaust gas in the mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor via a nitrogen selective membrane;
- or
- adsorbing an undesirable gas from the exhaust gas into the biochar to generate a treated gas and an enriched biochar via a biochar sorbent system;
- or a combination thereof.
6 more elements
A system, comprising:
- a controller having a processor, a memory, and instructions stored on the memory and executable by the processor to:
- control combustion of fuel with oxidant in a substantially stoichiometric equivalence ratio, phi (ϕ), of between 0.95 to 1.05 in a combustor of a gas turbine system, wherein the gas turbine system comprises a compressor, the combustor, and a turbine;
- control recirculation of an exhaust gas from the turbine to an intake into the compressor via an exhaust gas recirculation (EGR) system;
- control heating of a biomass feedstock in a biochar pyrolysis reactor to cause a pyrolysis reaction of the biomass feedstock using heat from the exhaust gas to generate a biochar and a syngas, wherein the controller is further configured to control at least one of:
- burning the syngas in a mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor to heat the exhaust gas via a duct burner
- separating nitrogen and the syngas from the exhaust gas in the mixture of the syngas and the exhaust gas output by the biochar pyrolysis reactor via a nitrogen selective membrane;
- or
- adsorbing an undesirable gas from the exhaust gas into the biochar to generate a treated gas and an enriched biochar via a biochar sorbent system;
- or a combination thereof.
6 more elements
Dependencies are inferred from the claim text.