Coal hydroconversion process comprising solvent extraction (OP-3472)

Patent · Tue Jun 25 00:00:00 EDT 1991

OSTI ID:5805020

Stuntz, G F; Culross, C C; Reynolds, S D

This patent describes a process for hydroconverting coal to produce a carbonaceous liquid. It comprises forming a mixture comprising coal particles, carbon monoxide and water in a pretreatment zone and heating the mixture to a temperature within the range of about 550{degrees} to 700{degrees} F and under a system pressure of at least about 1800 psi for a period of time sufficient to cause an increase in the solubility of the coal in organic solvent, the weight ratio of liquid water to coal present during the heating stage being at least about 0.5:1; extracting the pretreated coal with an organic solvent in an extraction zone to obtain from the coal an extract, comprising a substantial amount of soluble hydrocarbonaceous materials, and a residue comprising substantially all of the inorganic ash; forming a mixture comprising the extract and a catalyst, wherein the catalyst is comprised of dispersed particles of a sulfided metal containing compound, the metal being selected from the group consisting of Groups VA, VIA, VIIA and VIIIA of the Periodic Table of Elements and mixtures thereof; and treating the mixture of coal extract and catalyst with a hydrogen-containing gas under coal hydroconversion conditions, in a hydroconversion zone to obtain a hydrocarbonaceous liquid.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ (United States)
• Patent Number(s): US 5026475; A
• Application Number: PPN: US 7-455654
• OSTI ID: 5805020
• Resource Relation: Patent File Date: 21 Dec 1989
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
HYDROGENATION
SOLVENT EXTRACTION
COAL LIQUEFACTION
COAL LIQUIDS
PRODUCTION
CARBON MONOXIDE
CATALYTIC CRACKING
HYDROCRACKING
MIXTURES
SOLUBILITY
WATER
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
LIQUEFACTION
LIQUIDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010600 - Coal
Lignite
& Peat- Properties & Composition