초록 ▼

A closed-cycle gas turbine chemical processor separates the functions of combustion air and dilution fluid in a gas turbine combustor. The output of the turbine stage of the gas turbine is cooled and recirculated to its compressor from where a proportion is fed to a dilution portion of its combustor

A closed-cycle gas turbine chemical processor separates the functions of combustion air and dilution fluid in a gas turbine combustor. The output of the turbine stage of the gas turbine is cooled and recirculated to its compressor from where a proportion is fed to a dilution portion of its combustor and the remainder is fed to a chemical recovery system wherein at least carbon dioxide is recovered therefrom. Fuel and combustion air are fed to a combustion portion of the gas turbine combustor. In a preferred embodiment of the invention, the gas turbine is employed to drive an electric generator. A heat recovery steam generator and a steam turbine may be provided to recover additional energy from the gas turbine exhaust. The steam turbine may be employed to also drive the electric generator. Additional heat may be added to the heat recovery steam generator for enhancing the electricity generated using heat recovery combustors in which the functions of combustion and dilution are separated. The chemical recovery system may employ process steam tapped from an intermediate stage of the steam turbine for stripping carbon dioxide from an absorbent liquid medium which is used to separate it from the gas stream fed to it. As the amount of carbon dioxide in the fuel fed to the chemical processor increases, the amount of process steam required to separate it from the absorbent fluid medium increases and the contribution to generated electricity by the steam turbine correspondingly decreases.

대표청구항 ▼

A closed-cycle chemical processor comprising: a gas turbine including a compressor, a combustor and a turbine; means for coupling said turbine for driving said compressor and a load; means for splitting said combustor into a combustion portion and a dilution portion; means for feeding a fuel and a s

A closed-cycle chemical processor comprising: a gas turbine including a compressor, a combustor and a turbine; means for coupling said turbine for driving said compressor and a load; means for splitting said combustor into a combustion portion and a dilution portion; means for feeding a fuel and a supply of pressurized air to said combustion portion; means for feeding an output of said compressor to said dilution portion; means for cooling a gaseous effluent of said turbine and for feeding cooled effluent to said compressor, whereby a substantially closed system is provided; a chemical recovery system effective for recovering at least carbon dioxide from a gas stream fed to it; and means for feeding some of said output of said compressor to said chemical recovery system in an amount effective to maintain a substantially constant inventory of materials in said closed system.