System and method for thermal control in a gas turbine engine
First Claim
1. A system, comprising:
- a gas turbine engine, comprising;
a compressor section configured to generate compressed air;
a combustor coupled to the compressor section, wherein the combustor is configured to combust a first mixture comprising the compressed air and a first fuel to generate a first combustion gas;
a turbine section coupled to the combustor, wherein the turbine section is configured to expand the first combustion gas to generate an exhaust gas; and
a boiler coupled to the turbine section, wherein the boiler is configured to combust a second mixture comprising a portion of the first combustion gas and a second fuel to generate a second combustion gas that is routed into the turbine section at a gas return location downstream from the combustor, and wherein the boiler generates a first steam from heat exchange with the second combustion gas.
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Accused Products
Abstract
A system includes a gas turbine engine that includes a compressor section configured to generate compressed air and a combustor coupled to the compressor section. The combustor is configured to combust a first mixture comprising the compressed air and a first fuel to generate a first combustion gas. The gas turbine engine also includes a turbine section coupled to the combustor. The turbine section is configured to expand the first combustion gas to generate an exhaust gas. The gas turbine engine also includes a boiler coupled to the turbine section. The boiler is configured to combust a second mixture comprising a portion of the first combustion gas and a second fuel to generate a second combustion gas that is routed to the turbine section. In addition, the boiler generates a first steam from heat exchange with the second combustion gas.
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Citations
23 Claims
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1. A system, comprising:
a gas turbine engine, comprising; a compressor section configured to generate compressed air; a combustor coupled to the compressor section, wherein the combustor is configured to combust a first mixture comprising the compressed air and a first fuel to generate a first combustion gas; a turbine section coupled to the combustor, wherein the turbine section is configured to expand the first combustion gas to generate an exhaust gas; and a boiler coupled to the turbine section, wherein the boiler is configured to combust a second mixture comprising a portion of the first combustion gas and a second fuel to generate a second combustion gas that is routed into the turbine section at a gas return location downstream from the combustor, and wherein the boiler generates a first steam from heat exchange with the second combustion gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system, comprising:
a turbine controller configured to control a reheater to increase a temperature of an exhaust gas generated by a combustor of a turbine engine having a turbine coupled to the reheater, wherein the reheater is configured to combust a mixture comprising a first combustion gas and a fuel to generate a second combustion gas that is routed into the turbine at a gas return location downstream from the combustor to be expanded in the turbine, and wherein the reheater generates steam from heat exchange with the second combustion gas. - View Dependent Claims (14, 15, 16, 21, 22)
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17. A method, comprising:
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compressing air in a compressor section of a turbine engine to generate compressed air; combusting a first mixture comprising the compressed air and a first fuel in a combustor of the turbine engine downstream from the compressor section to generate a first combustion gas; expanding the first combustion gas in a turbine section of the turbine engine downstream from the combustor to generate an exhaust gas; combusting a second mixture comprising a portion of the first combustion gas and a second fuel in a boiler fluidly coupled to the turbine section downstream from the combustor to generate a second combustion gas; routing the second combustion gas into the turbine section at a gas return location downstream from the combustor; and generating a first steam in the boiler by exchanging heat from the second combustion gas to a boiler feedwater. - View Dependent Claims (18, 19, 20)
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23. A system, comprising:
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a gas turbine engine, comprising; a compressor section configured to generate compressed air; a combustor coupled to the compressor section, wherein the combustor is configured to combust a first mixture comprising the compressed air and a first fuel to generate a first combustion gas; a turbine section coupled to the combustor, wherein the turbine section is configured to expand the first combustion gas to generate an exhaust gas; and a boiler coupled to the turbine section, wherein the boiler is configured to combust a second mixture comprising a portion of the first combustion gas and a second fuel to generate a second combustion gas that is routed to the turbine section, and wherein the boiler generates a first steam from heat exchange with the second combustion gas; and a heat recovery steam generator (HRSG) coupled to the turbine section, wherein the HRSG is configured to generate a second steam from heat exchange with the exhaust gas.
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Specification