Patent ID: 6786943
Filing Date: 2004-09-07
Classification: C10J

Abstract:
A process for treating solid fuel materials, such as contaminated biomass and solid city waste, and converting them into a synthesized gas, comprising: a fuel gasification step carried out in a co-current gasogen and in which a fraction of the fuel materials undergoes combustion with an oxidant and the heat developed in the combustion is exploited for gasifying the remaining material; and a cinders separation, extraction and purification step, whereincinders are separated and removed from the fuel material after it has underdone the partial combustion and before it has been gasified; cinders are then purified and collected after eliminating from it any remaining fuel material through complete combustion; the fuel material which has undergone the gasification step without being fay converted to gas (CO) is recirculated by mixing it to fresh material before the latter is submitted to combustion.