Combined power generation plant

A combined power generation plant in which exhaust gas from a power generation gas turbine is sent to an exhaust gas boiler, and a power generation steam turbine is rotated with steam generated by said exhaust gas boiler, characterized in that said exhaust gas boiler consists of a high-pressure reheat type steam system comprising a high-pressure economizer, a high-pressure evaporator, and a high-pressure superheater to recover waste heat in which fuel is supplied to said exhaust gas boiler, and the supplied fuel undergoes catalytic reaction in a catalysis section to increase the temperature of exhaust gas, wherein said exhaust gas boiler is provided with a temperature sensor, a liquid natural gas-supply system supplying said fuel and being provided with a flow controller and a flow regulating valve, and said flow regulating valve is controlled by said flow controller to control the supply amount of liquid natural gas, whereby the temperature of exhaust gas is kept proper.

A combined power generation plant in which exhaust gas from a power generation gas turbine is sent to an exhaust gas boiler, and a power generation steam turbine is rotated with steam generated by said exhaust gas boiler, characterized in that said exhaust gas boiler consists of a high-pressure reheat type steam system comprising a high-pressure economizer, a high-pressure evaporator, and a high-pressure superheater to recover waste heat in which fuel is supplied to said exhaust gas boiler by a fuel supply line, and the supplied fuel undergoes catalytic reaction in a catalysis section to increase the temperature of exhaust gas, wherein the catalysis section is a catalyst containing a transition metal or an oxide thereof.

A combined power generation plant plant in which exhaust gas from a power generation gas turbine is sent to an exhaust gas boiler, and a power generation steam turbine is rotated with steam generated by said exhaust gas boiler, characterized in that said exhaust gas boiler consists of a high-pressure reheat type steam system comprising a high-pressure economizer, a high-pressure evaporator, and a high-pressure superheater to recover waste heat in which fuel is supplied to said exhaust gas boiler and the supplied fuel undergoes catalytic reaction in a catalysis section to increase the temperature of exhaust gas, wherein said exhaust gas boiler is provided with a temperature sensor, a liquid natural gas supply system supplying said fuel and being provided with a flow controller and a flow regulating valve, and said flow regulating valve is controlled by said flow controller to control the supply amount of liquid natural gas, whereby the temperature of exhaust gas is kept proper, wherein the catalysis section is a catalyst containing a transition metal or an oxide thereof.