Multi-hydrotorting of coal

Abstract

Abstract A NONCATALYTIC MULTI-HYDROTORTING PROCESS FOR MAXIMIZING THE CONVERSION OF COAL INTO COAL OIL. A PUMPABLE COAL-WATER SLURRY IN ADMIXTURE WITH A STREAM OF SYNTHESIS GAS IS PASSED THROUGH A TUBULAR RETORT WHERE IT IS HEATED TO A TEMPERATURE IN THE RANGE OF ABOUT 600 TO 950* F. IN THE ABSENCE OF AIR. THE SOLID COAL PARTICLES ARE FRAMENTIZED AND CARBONIZED IN THE TUBULAR RETORT, THE VOLATILE CONSTITUENTS IN SAID SLURRY ARE VOLATILIZED AND SIMULTANEOUSLY HYDROGENATION OF THE PROCESS STREAM TAKES PLACE. THE EFFLUENT FROM THE TUBULAR RETORT IS THEN INTRODUCED INTO A FLUIDIZED BED RETORT ALONG WITH A SECOND STREAM OF SYNTHESIS GAS. THERMAL DECOMPOSITION OF THE CARBONACEOUS MATERIALS TAKES PLACE IN THE ABSENCE OF AIR AND THE PROCESS STREAM IS HYDROGENATED FOR A SECOND TIME. THE PROCESS STREAM LEAVING THE FLUIDIZED BED RETORT IS COOLED TO CONDENSE OUT AND SEPARATE WATER AND RAW COAL-OIL IN A GAS-LIQUID SEPARATION ZONE. A PORTION OF THE OFF-GAS FROM THE GAS-LIQUID SEPARATOR MAY BE SCRUBBED AND PURIFIED TO PRODUCE NONPOLLUTING FUEL GAS HAVING A HIGH HEATING VALUE. SPENT CARBONACEOUS PARTICLES LEAVING THE FLUIDIZED BED RETORT AND OPTIONALLY A PORTION OF THE OFF-GAS FROM THE GAS-LIQUID SEPARATOR ARE INTRODUCED INTO A FREE-FLOW NONCATALYTIC GAS GENERATOR FOR CONVERSION INTO PREFERABLY HYDROGEN-RICH SYNTHESIS GAS BY PARTIAL OXIDATION FOR USE IN THE AFORESAID TWO HYDROTORTING STAGES.

Inventors

• 👤 J Tassoney
• 👤 W Schlinger

Bibliographic Details