Gasification of carbonaceous materials containing volatile constituents

Claim 1

A PROCESS FOR THE CARBONIZATION AND GASIFICATION OF SOLID CARBONACEOUS MATERIAL CONTAINING VOLATILIZABLE CONSTITUENTS WHICH COMPRISES MAINTAINING A DENSE PHASE FLUIDIZED BED OF PARTICLES OF SOLID CARBONACEOUS MATERIAL IN A CARBONIZATION ZONE WHEREIN VOLATILIZABLE CONSTITUENTS ARE DISTILLED FROM SAID PARTICLES PRODUCING CARBONIZED MATERIAL, PASSING CARBONIZED MATERIAL FROM SAID CARBONZATION ZONE TO A SEPARATE GASIFICATION ZONE, SUBJECTING SAID CARBONIZED MATERIAL TO REACTION WITH OXYGEN AND STREAM IN SAID GASIFICATION ZONE TO PRODUCE A PRIMARY GAS CONSISTING ESSENTIALLY OF CARBON MONOXIDE AND HYDROGEN, PASSING A STREAM OF SAID PRIMARY GAS THROUGH AN INTERMEDIATE ZONE OF RESTRICTED CROSS-SECTIONAL AREA DIRECTLY INTO THE LOWER PORTION OF SAID CARBONIZATION ZONE THEREBY EFFECTING FLUIDIZATION OF THE CARBONACEOUS MATERIAL THEREIN AND DISTILLATION OF SAID VOLATILIZABLE CONSTITUENTS, INTRODUCING PARTICLES OF FRESH CARBONACEOUS MATERIAL CONTAINING VOLATILIZABLE CONSTITUENTS INTO SAID STREAM OF PRIMARY GAS IN SAID INTERMEDIATE ZONE, INTRODUCING PARTICLES OF CARBONIZED MATERIAL SUBSTANTIALLY