Patent ID: 6321540
Filing Date: 2001-11-27
Classification: F01K,F22B,F23G,F23J,Y02E

Abstract:
An apparatus for recovering heat and generating power from wastes, said apparatus comprising:a low temperature gasifier for gasifying wastes at a low temperature to thereby produce low temperature combustible gas;a high temperature gasifier for gasifying the low temperature combustible gas at a high temperature to produce high temperature combustible gas containing at least one of alkali metal chlorides, calcium chloride, copper oxide and copper chloride;a waste heat boiler for cooling the high temperature combustible gas and for producing steam;a dust filter for filtering the thus cooled combustible gas at a temperature of from 450-650.degree. C. to thereby remove therefrom the alkali metal chlorides, calcium chloride, copper oxide and copper chloride as solid materials;a furnace for reburning the thus filtered combustible gas with air, oxygenated air or oxygen to thereby reheat the gas to a temperature sufficient to permit heat recovery therefrom;a steam superheater to receive the thus reheated gas and the steam and to superheat the steam by recovery of heat from the gas; anda steam turbine to receive the thus superheated steam and thereby to generate power.