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Title: Process for coal liquefaction employing selective coal feed

Abstract

An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.

Inventors:
 [1];  [2]
  1. (New Tripoli, PA)
  2. (Bethlehem, PA)
Publication Date:
Research Org.:
INTERNATIONAL COAL REFINING CO
OSTI Identifier:
864650
Patent Number(s):
US 4397732
Assignee:
International Coal Refining Company (Allentown, PA) OSTI
DOE Contract Number:  
AC05-78OR03054
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; coal; liquefaction; employing; selective; feed; improved; provided; whereby; conversion; yields; pentane; soluble; products; increased; selected; pulverized; slurried; derived; solvent; passed; preheater; dissolvers; presence; hydrogen-rich; gases; elevated; temperatures; pressures; following; solids; including; mineral; ash; unconverted; macerals; separated; condensed; reactor; effluent; coals; comprise; washed; substantial; amount; matter; preferably; 25-75; weight; based; run-of-mine; removed; pyritic; sulfur; remaining; exhibiting; vitrinite; reflectance; 70; unconverted coal; coal conversion; liquefaction products; reactor effluent; coal feed; mineral matter; provided whereby; elevated temperatures; liquefaction process; elevated temperature; coal liquefaction; feed coal; pyritic sulfur; substantial amount; rich gas; coal macerals; mineral ash; improved coal; hydrogen-rich gas; process derived; pentane soluble; liquefaction product; hydrogen-rich gases; including mineral; feed coals; derived solvent; /208/

Citation Formats

Hoover, David S., and Givens, Edwin N. Process for coal liquefaction employing selective coal feed. United States: N. p., 1983. Web.
Hoover, David S., & Givens, Edwin N. Process for coal liquefaction employing selective coal feed. United States.
Hoover, David S., and Givens, Edwin N. Sat . "Process for coal liquefaction employing selective coal feed". United States. https://www.osti.gov/servlets/purl/864650.
@article{osti_864650,
title = {Process for coal liquefaction employing selective coal feed},
author = {Hoover, David S. and Givens, Edwin N.},
abstractNote = {An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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