Hydrogenation of coal

Abstract

Abstract PULVERIZED COAL, IN THE SUBSTANTIAL ABSENCE OF PASTING OR SLURRYING MEDIU, IS DISPERSED INTO A RECYCLE STREAM OF PREHEATED, HIGH-PRESSURE HYDROGEN AND THE RESULTANT REACTION STREAM IS PRESSED THROUGH A HYDROGENATION ZONE CONTAINING A BED OF HYDROGENATION CATALYST AT A RATE SUFFICIENT TO SWEEP UNREACTED COAL, COAL ASH AND HYDROCARBON REACTION PRODUCTS FROM THE CATALYST BED. LIQUID AND GASEOUS HYDROCARBON PRODUCTS, AFTER SULFUR REMOVAL, ARE RECOVERED FROM THE PRODUCT STREAM. A HIGH HYDROGEN RECYCLE RATIO THROUGH THE CATALYST BED IS EMPLOYED TO PREVENT CATALYST INACTIVATION BY PRODUCT HYDROCARBONS. A NOVEL METHOD OF FEEDING THE PULVERIZED COAL INTO THE HIGH PRESSURE SYSTEM FROM A HYDROGEN PRESSURIZED HOPPER WITHOUT PERMITTING THE COMPRESSED HYDROGEBN TO EXPAND TO LOWER PRESSURE, THEREBY REDUCING THE ENERGY REQUIREMENTS OF THE SYSTEM, IS DISCLOSED.

Inventors

• 👤 W Schroeder

Bibliographic Details