Patent ID: 6148602
Filing Date: 2000-11-21
Classification: F01K,F02C,F25J,Y02E,Y02P

Abstract:
A method of generating power with sequestration of carbon-dioxide emission comprising the steps of:compressing ambient air;after the compressing step, separating substantially pure oxygen from the ambient air;further compressing the substantially pure oxygen separated from the ambient air;after the further compressing step, dividing the substantially pure oxygen into a first oxygen stream and a second oxygen stream;introducing said first oxygen stream and a solid fuel into a solid-fuel gasifier for converting said first oxygen stream and said solid fuel into a combustible gas;combusting said gas in the presence of said second oxygen stream at a flame temperature, the combusting step including the step of introducing water into said combustor during the combusting step for generating an exhaust stream of carbon dioxide and steam;passing said exhaust stream of carbon dioxide and steam through a turbine for driving said turbine and generating power;after the passing said exhaust stream through the turbine step, cooling said turbine exhaust stream for producing carbon dioxide gas and water; andseparating said carbon dioxide gas from said water, wherein the step of introducing water into said combustor during the combusting step increases the mass flow and volume flow of said exhaust stream passing through said turbine for elevating the amount of power generated by said turbine.