System and method for a gas turbine engine
AssigneesGeneral Electric Company, ExxonMobil Upstream Research Company
InventorsRichard A. Huntington, Sulabh K. Dhanuka
Life of this patent
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Abstract
A system includes a gas turbine engine configured to combust an oxidant and a fuel to generate an exhaust gas, a catalyst bed configured to treat a portion of the exhaust gas from the gas turbine engine to generate a treated exhaust gas, a differential temperature monitor configured to monitor a differential temperature between a first temperature of the portion of exhaust gas upstream of the catalyst bed and a second temperature of the treated exhaust gas downstream of the catalyst bed, and an oxidant-to-fuel ratio system configured to adjust a parameter to maintain an efficacy of the catalyst bed based at least in part on the differential temperature in order to maintain a target equivalence ratio.
Claims20
A method, comprising:
- combusting an oxidant and a fuel in a gas turbine engine to generate an exhaust gas;
- treating a portion of the exhaust gas from the gas turbine engine in a catalyst bed to generate a treated exhaust gas;
- determining a differential temperature between a first temperature of the portion of the exhaust gas upstream of the catalyst bed and a second temperature of the treated exhaust gas downstream of the catalyst bed using a differential temperature monitor;
- monitoring a gas composition of the treated exhaust gas downstream of the catalyst bed using a gas composition sensor;
- and
- adjusting an oxidant flow rate of the oxidant, or a fuel flow rate of the fuel, or both, using an oxidant-to-fuel ratio system to achieve a target equivalence ratio of the gas turbine engine based on the differential temperature and the gas composition.
A system, comprising:
- a gas turbine engine configured to combust an oxidant and a fuel to generate an exhaust gas;
- a first catalyst bed configured to treat a first portion of the exhaust gas from the gas turbine engine to generate a first treated exhaust gas;
- a first differential temperature monitor configured to monitor a first differential temperature between a first temperature of the first portion of the exhaust gas upstream of the first catalyst bed and a second temperature of the first treated exhaust gas downstream of the first catalyst bed;
- a first gas composition sensor configured to monitor a composition of the first treated exhaust gas downstream of the first catalyst bed;
- and
- an oxidant-to-fuel ratio system configured to achieve a target equivalence ratio of the gas turbine engine, wherein the oxidant-to-fuel ratio system is configured to adjust an oxidant flow rate of the oxidant and a fuel flow rate of the fuel based at least on the first differential temperature and the composition of the first treated exhaust gas.
A system, comprising:
- a controller, comprising:
- one or more tangible, non-transitory, machine-readable media collectively storing one or more sets of instructions;
- and
- one or more processing devices configured to execute the one or more sets of instructions to:
- combust an oxidant and a fuel in a gas turbine engine to generate an exhaust gas;
- treat a portion of the exhaust gas from the gas turbine engine in a catalyst bed to generate a treated exhaust gas;
- determine a differential temperature between a first temperature of the portion of the exhaust gas upstream of the catalyst bed and a second temperature of the treated exhaust gas downstream of the catalyst bed using a differential temperature monitor;
- monitor a gas composition of the treated exhaust gas downstream of the catalyst bed using a gas composition sensor;
- and
- adjust an oxidant flow rate of the oxidant, or a fuel flow rate of the fuel, or both, using an oxidant-to-fuel ratio system to achieve a target equivalence ratio of the gas turbine engine based on the differential temperature and the gas composition
Dependencies are inferred from the claim text.