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Title: Process and apparatus for coal hydrogenation

Abstract

In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressure. The resulting mixture of agglomerates, excess water, dissolved catalyst, and unagglomerated solids is pumped to reaction pressure and then passed through a drainage device where all but a small amount of surface water is removed from the agglomerates. Sufficient catalyst for the reaction is contained in surface water remaining on the agglomerates. The agglomerates fall into the liquefaction reactor countercurrently to a stream of hot gas which is utilized to dry and preheat the agglomerates as well as deposit catalyst on the agglomerates before they enter the reactor where they are converted to primarily liquid products under hydrogen pressure.

Inventors:
 [1]
  1. (McMurray, PA)
Issue Date:
Research Org.:
Pittsburgh Energy Technology Center
OSTI Identifier:
866555
Patent Number(s):
4735706
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; apparatus; coal; hydrogenation; liquefaction; aqueous; slurry; prepared; containing; dissolved; catalyst; quantity; oil; added; coal-oil; agglomerates; agitation; atmospheric; pressure; resulting; mixture; excess; water; unagglomerated; solids; pumped; reaction; passed; drainage; device; amount; surface; removed; sufficient; contained; remaining; fall; reactor; countercurrently; stream; hot; gas; utilized; dry; preheat; deposit; enter; converted; primarily; liquid; products; hydrogen; excess water; resulting mixture; liquefaction process; coal liquefaction; atmospheric pressure; hot gas; liquid products; liquid product; aqueous slurry; liquefaction reactor; hydrogen pressure; surface water; coal hydrogenation; water remaining; liquefaction catalyst; coal-oil agglomerates; coal hydrogen; prepared containing; dissolved liquefaction; /208/

Citation Formats

Ruether, John A. Process and apparatus for coal hydrogenation. United States: N. p., 1988. Web.
Ruether, John A. Process and apparatus for coal hydrogenation. United States.
Ruether, John A. Fri . "Process and apparatus for coal hydrogenation". United States. https://www.osti.gov/servlets/purl/866555.
@article{osti_866555,
title = {Process and apparatus for coal hydrogenation},
author = {Ruether, John A.},
abstractNote = {In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressure. The resulting mixture of agglomerates, excess water, dissolved catalyst, and unagglomerated solids is pumped to reaction pressure and then passed through a drainage device where all but a small amount of surface water is removed from the agglomerates. Sufficient catalyst for the reaction is contained in surface water remaining on the agglomerates. The agglomerates fall into the liquefaction reactor countercurrently to a stream of hot gas which is utilized to dry and preheat the agglomerates as well as deposit catalyst on the agglomerates before they enter the reactor where they are converted to primarily liquid products under hydrogen pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

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