Patent ID: 6945029
Filing Date: 2005-09-20
Classification: F01K,F02C,F05D,F25J,Y02E,Y02T

Abstract:
1. A low emissions hydrocarbon combustion power generation system featuring regenerative heating, comprising in combination: an air separator adapted to separate at least a portion of oxygen from other constituents within ambient air entering said air separator through an oxygen outlet; a source of hydrocarbon fuel; a source of diluent; a gas generator adapted to combust the fuel from said source of hydrocarbon fuel with oxygen from said oxygen outlet of said air separator to produce products of combustion including water and carbon dioxide, said gas generator including an outlet for the products of combustion, said gas generator adapted to add the diluent from said source of diluent to the products of combustion produced within said gas generator with a combination of the diluent and the products of combustion produced within the gas generator discharged through said gas generator outlet; a first turbine downstream from said gas generator outlet, said turbine adapted to expand the products of combustion and the diluent, as well as output power, said first turbine having a discharge; at least one diluent heater adapted to heat the diluent before the diluent enters said gas generator, said diluent heater in heat transfer relationship with the products of combustion downstream from said gas generator, such that at least a portion of heat within the products of combustion is transferred to the diluent before the diluent enters said gas generator; wherein a reheater is located downstream from said first turbine discharge, said reheater adapted to combust hydrocarbon fuel from said source of hydrocarbon fuel with oxygen from said oxygen outlet of said air separator, and to mix the products of combustion produced within said gas generator and the diluent with products of combustion produced within said reheater to produce combined products of combustion discharged through a reheater outlet; a second turbine downstream from said reheater, said second turbine adapted to expand the combined products of combustion and output power, and having a second turbine discharge; and said at least one diluent heater located downstream from said second turbine.