Dry 3-way catalytic reduction of gas turbine NO_X

摘要

A power generation system capable of eliminating NOxcomponents in the exhaust gas by using a 3-way catalyst, comprising a gas compressor to increase the pressure of ambient air fed to the system; a combustor capable of oxidizing a mixture of fuel and compressed air to generate an expanded, high temperature exhaust gas; a turbine that uses the force of the high temperature gas; an exhaust gas recycle (EGR) stream back to the combustor; a 3-way catalytic reactor downstream of the gas turbine engine outlet which treats the exhaust gas stream to remove substantially all of the NOx components; a heat recovery steam generator (HRSG); an EGR compressor feeding gas to the combustor and turbine; and an electrical generator.

主权项

1. A power generation system for a gas turbine engine comprising:
an ambient air gas compressor having an inlet for ambient air, and an outlet for discharging compressed ambient air; an exhaust gas compressor having an inlet for an exhaust gas recycle (EGR) stream, and an outlet for discharging a compressed EGR stream; a combustor downstream of said ambient air gas compressor and said exhaust gas compressor, said combustor having inlets for the discharged compressed ambient air, the discharged compressed EGR stream and fuel, and configured to combust a mixture of said fuel, the discharged compressed ambient air and the discharged compressed EGR stream to generate a high temperature combustion gas and discharge the high temperature combustion gas from an outlet for the combustor; a turbine downstream of said combustor having an inlet coupled to the outlet for the combustor, turbine blades moveable by the force of said high temperature combustion gas, and an outlet for discharging exhaust gas from the turbine, wherein the exhaust gas contains four percent or less of free oxygen by volume; a heat recovery steam generator (HRSG) downstream of the turbine and configured to receive the discharged exhaust gas from the turbine, wherein the discharged exhaust gas passes through the HRSG and a portion of the discharged exhaust gas forms the EGR stream, and at least one feed line from said exhaust gas compressor to said turbine for feeding cooling and sealing gas to said turbine.