PATENTS
Pulverized fuel in a fluidized state is gasified with O2 and steam while being heated with purge gas in such a way that the powdered fuel is passed into the reaction zone along with O2 before it has made contact with the purge gas-steam mixture, and is there contacted with the highly preheated mixture of endothermic reacting gasification agents such as steam and CO2. The use of a highly heated recycle gas stream decreases the O2 consumption and through the creation of turbulent conditions increases the conversion. |