Patent ID: 7736401
Filing Date: 2010-06-15
Classification: C10J,Y02P

Abstract:
1. Method of gasifying carbonaceous materials in the form of solid particles, comprising a heating of a gaseous mixture formed from a feed gas and steam in a heater, to a temperature of at least 1200° C., a putting in contact, in a pressurised gasification reactor, of the particles of carbonaceous materials and the said heated gaseous mixture with the formation of a raw reaction gas and unburnt ash, a recovery of the raw reaction gas from the reactor, a fusion of the ash, and an elimination of the molten ash, characterized in that it also comprises a separate supply to the heater of steam on the one hand and the said feed gas on the other hand, a separate taking-off, from the heater, of the said gaseous mixture at the said temperature of at least 1200° C. on the one hand and part of the said feed gas in the dry state and at this same temperature on the other hand, and in the gasification reactor, an injection of this dry feed gas and a gas forming with it a combustible mixture into the ash issuing from the said gasification reaction, in order to achieve by combustion a temperature above 1500° C.