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Title: Coal liquefaction process

Abstract

A process for the liquefaction of coal wherein raw feed coal is dissolved in recycle solvent with a slurry containing recycle coal minerals in the presence of added hydrogen at elevated temperature and pressure. The highest boiling distillable dissolved liquid fraction is obtained from a vacuum distillation zone and is entirely recycled to extinction. Lower boiling distillable dissolved liquid is removed in vapor phase from the dissolver zone and passed without purification and essentially without reduction in pressure to a catalytic hydrogenation zone where it is converted to an essentially colorless liquid product boiling in the transportation fuel range.

Inventors:
 [1]
  1. Overland Park, KS
Issue Date:
Research Org.:
GULF RESEARCH & DEVELOPMENT CO
OSTI Identifier:
865762
Patent Number(s):
4569749
Assignee:
Gulf Research & Development Company (Pittsburgh, PA); Mitsui SRC Development Co., Ltd. (Tokyo, JP); Ruhrkohle AG (DE)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
DOE Contract Number:  
AC22-82PC50001
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
coal; liquefaction; process; raw; feed; dissolved; recycle; solvent; slurry; containing; minerals; presence; added; hydrogen; elevated; temperature; pressure; boiling; distillable; liquid; fraction; obtained; vacuum; distillation; zone; entirely; recycled; extinction; removed; vapor; phase; dissolver; passed; purification; essentially; reduction; catalytic; hydrogenation; converted; colorless; product; transportation; fuel; range; recycle solvent; catalytic hydrogenation; liquefaction process; elevated temperature; coal liquefaction; liquid product; feed coal; vapor phase; liquid fraction; vacuum distillation; slurry containing; coal mineral; raw feed; hydrogenation zone; recycle coal; coal mine; essentially colorless; fuel range; transportation fuel; /208/

Citation Formats

Wright, Charles H. Coal liquefaction process. United States: N. p., 1986. Web.
Wright, Charles H. Coal liquefaction process. United States.
Wright, Charles H. Wed . "Coal liquefaction process". United States. https://www.osti.gov/servlets/purl/865762.
@article{osti_865762,
title = {Coal liquefaction process},
author = {Wright, Charles H},
abstractNote = {A process for the liquefaction of coal wherein raw feed coal is dissolved in recycle solvent with a slurry containing recycle coal minerals in the presence of added hydrogen at elevated temperature and pressure. The highest boiling distillable dissolved liquid fraction is obtained from a vacuum distillation zone and is entirely recycled to extinction. Lower boiling distillable dissolved liquid is removed in vapor phase from the dissolver zone and passed without purification and essentially without reduction in pressure to a catalytic hydrogenation zone where it is converted to an essentially colorless liquid product boiling in the transportation fuel range.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Patent:

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