Patent ID: 8317510
Filing Date: 2012-11-27
Classification: F23C,F23G,F23L,Y02E

Abstract:
1. A method of recovering enthalpy from a combustion source, the method comprising: reacting oxygen and a fuel in a direct-fire combustion reaction zone of a furnace to generate a heated effluent stream that exits the furnace; entraining at least a portion of said heated effluent stream in a high velocity jet stream to form a mixed stream, wherein said entraining occurs external to said direct-fire combustion reaction zone of said furnace, and said high velocity jet stream comprises oxygen or fuel; pressurizing said mixed stream; and introducing said pressurized mixed stream into said direct-fire combustion reaction zone of said furnace to recirculate at least a portion of the heated effluent stream, thereby recovering at least a portion of the enthalpy contained in said heated effluent stream, wherein said introducing of said pressurized mixed stream into said direct-fire combustion reaction zone results in a radiative homogenous combustion mode with flameless combustion of said oxygen and said fuel in said direct-fire combustion reaction zone.