Patent ID: 7062912
Filing Date: 2006-06-20
Classification: C03B,F01K,F23J,F23L,F25J,Y02E,Y02P

Abstract:
1. A system for recovering thermal energy produced by an oxygen-enriched combustion furnace in which oxidant and fuel gases are combusted thereby producing flue gas, said system comprising: a) a source of oxidant gas, said oxidant gas having a higher oxygen content than air; b) at least one heat exchanger system adapted to receive the flue gas and at least one of said oxidant gas and the fuel gas, such that the at least one of said oxidant gas and the fuel gas are heated and the flue gas is cooled; c) a waste heat boiler adapted to transfer heat from the flue gas to feedwater flowing therethrough to produce superheated steam; d) a turbine for expansion of the superheated steam therethrough and producing mechanical power therefrom.