Coal hydrogenation process with direct coal feed and improved residuum conversion

Patent · Tue Mar 20 04:00:00 EST 1984

OSTI ID:6650176

Huibers, D T.A.; Kydd, P H

A process for hydrogenation of coal to produce hydrocarbon liquids and gases, wherein the yield of liquid products is increased by feeding particulate coal at temperature below about 600/sup 0/ F. directly into a backmixed reactor and preferably into an ebullated bed catalytic reaction zone containing coal-derived liquid and hydrogen for rapid heating and conversion. In the process, the coal is pressurized and fed without preheating directly into the reaction zone and additional heat needed in the reaction zone to maintain temperature therein at 750/sup 0/-900/sup 0/ F. is provided by heating recycle hydrogen and coal-derived liquid streams to temperatures above the desired reaction zone temperature. By using this process, the coal feed is heated quickly and hydrogenated in the catalytic reaction zone and undesired thermal reactions which usually occur in coal during preheating before its exposure to the catalytic hydrogenation reaction zone conditions are minimized, which results in increased yields of desirable light hydrocarbon liquids products and reduced production of undesirable asphaltenes and uncoverted coal or char.

• Assignee: HRI, Inc.
• Patent Number(s): US 4437973
• OSTI ID: 6650176
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT TREATMENTS
HIGH TEMPERATURE
HYDROCARBONS
HYDROGENATION
LIQUEFACTION
LIQUIDS
MATERIALS
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
PRODUCTION
THERMOCHEMICAL PROCESSES
YIELDS