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Title: Coal-oil slurry preparation

Abstract

A pumpable slurry of pulverized coal in a coal-derived hydrocarbon oil carrier which slurry is useful as a low-ash, low-sulfur clean fuel, is produced from a high sulfur-containing coal. The initial pulverized coal is separated by gravity differentiation into (1) a high density refuse fraction containing the major portion of non-coal mineral products and sulfur, (2) a lowest density fraction of low sulfur content and (3) a middlings fraction of intermediate sulfur and ash content. The refuse fraction (1) is gasified by partial combustion producing a crude gas product from which a hydrogen stream is separated for use in hydrogenative liquefaction of the middlings fraction (3). The lowest density fraction (2) is mixed with the liquefied coal product to provide the desired fuel slurry. Preferably there is also separately recovered from the coal liquefaction LPG and pipeline gas.

Inventors:
 [1]
  1. (Perkiomenville, PA)
Issue Date:
Research Org.:
INTERNATIONAL COAL REFINING CO
OSTI Identifier:
864618
Patent Number(s):
4392940
Assignee:
International Coal Refining Company (Allentown, PA) OSTI
DOE Contract Number:  
AC05-78OR03054
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
coal-oil; slurry; preparation; pumpable; pulverized; coal; coal-derived; hydrocarbon; oil; carrier; useful; low-ash; low-sulfur; clean; fuel; produced; sulfur-containing; initial; separated; gravity; differentiation; density; refuse; fraction; containing; major; portion; non-coal; mineral; products; sulfur; lowest; content; middlings; intermediate; ash; gasified; partial; combustion; producing; crude; gas; product; hydrogen; stream; hydrogenative; liquefaction; mixed; liquefied; provide; desired; preferably; separately; recovered; lpg; pipeline; pumpable slurry; coal-oil slurry; coal product; liquefied coal; fraction containing; sulfur content; pulverized coal; coal liquefaction; major portion; lean fuel; ash content; slurry preparation; coal mineral; hydrogen stream; gas product; clean fuel; coal mine; partial combustion; hydrocarbon oil; containing coal; /208/44/

Citation Formats

Tao, John C. Coal-oil slurry preparation. United States: N. p., 1983. Web.
Tao, John C. Coal-oil slurry preparation. United States.
Tao, John C. Sat . "Coal-oil slurry preparation". United States. https://www.osti.gov/servlets/purl/864618.
@article{osti_864618,
title = {Coal-oil slurry preparation},
author = {Tao, John C.},
abstractNote = {A pumpable slurry of pulverized coal in a coal-derived hydrocarbon oil carrier which slurry is useful as a low-ash, low-sulfur clean fuel, is produced from a high sulfur-containing coal. The initial pulverized coal is separated by gravity differentiation into (1) a high density refuse fraction containing the major portion of non-coal mineral products and sulfur, (2) a lowest density fraction of low sulfur content and (3) a middlings fraction of intermediate sulfur and ash content. The refuse fraction (1) is gasified by partial combustion producing a crude gas product from which a hydrogen stream is separated for use in hydrogenative liquefaction of the middlings fraction (3). The lowest density fraction (2) is mixed with the liquefied coal product to provide the desired fuel slurry. Preferably there is also separately recovered from the coal liquefaction LPG and pipeline gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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