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Title: Integrated coal cleaning, liquefaction, and gasification process

Abstract

Coal is finely ground and cleaned so as to preferentially remove denser ash-containing particles along with some coal. The resulting cleaned coal portion having reduced ash content is then fed to a coal hydrogenation system for the production of desirable hydrocarbon gases and liquid products. The remaining ash-enriched coal portion is gasified to produce a synthesis gas, the ash is removed from the gasifier usually as slag, and the synthesis gas is shift converted with steam and purified to produce the high purity hydrogen needed in the coal hydrogenation system. This overall process increases the utilization of as-mined coal, reduces the problems associated with ash in the liquefaction-hydrogenation system, and permits a desirable simplification of a liquids-solids separation step otherwise required in the coal hydrogenation system.

Inventors:
 [1]
  1. (Pennington, NJ)
Publication Date:
OSTI Identifier:
863632
Patent Number(s):
US 4217201
Assignee:
Hydrocarbon Research, Inc. (Lawrenceville, NJ) OSTI
DOE Contract Number:  
E(49-18)-1544
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
integrated; coal; cleaning; liquefaction; gasification; process; finely; ground; cleaned; preferentially; remove; denser; ash-containing; particles; resulting; portion; reduced; ash; content; fed; hydrogenation; production; desirable; hydrocarbon; gases; liquid; products; remaining; ash-enriched; gasified; produce; synthesis; gas; removed; gasifier; slag; shift; converted; steam; purified; purity; hydrogen; overall; increases; utilization; as-mined; reduces; associated; liquefaction-hydrogenation; permits; simplification; liquids-solids; separation; step; otherwise; required; coal cleaning; hydrocarbon gas; synthesis gas; liquid products; liquid product; gasification process; hydrocarbon gases; overall process; coal hydrogenation; separation step; ash content; containing particles; solids separation; reduced ash; finely ground; integrated coal; coal hydrogen; carbon gases; /208/

Citation Formats

Chervenak, Michael C. Integrated coal cleaning, liquefaction, and gasification process. United States: N. p., 1980. Web.
Chervenak, Michael C. Integrated coal cleaning, liquefaction, and gasification process. United States.
Chervenak, Michael C. Tue . "Integrated coal cleaning, liquefaction, and gasification process". United States. https://www.osti.gov/servlets/purl/863632.
@article{osti_863632,
title = {Integrated coal cleaning, liquefaction, and gasification process},
author = {Chervenak, Michael C.},
abstractNote = {Coal is finely ground and cleaned so as to preferentially remove denser ash-containing particles along with some coal. The resulting cleaned coal portion having reduced ash content is then fed to a coal hydrogenation system for the production of desirable hydrocarbon gases and liquid products. The remaining ash-enriched coal portion is gasified to produce a synthesis gas, the ash is removed from the gasifier usually as slag, and the synthesis gas is shift converted with steam and purified to produce the high purity hydrogen needed in the coal hydrogenation system. This overall process increases the utilization of as-mined coal, reduces the problems associated with ash in the liquefaction-hydrogenation system, and permits a desirable simplification of a liquids-solids separation step otherwise required in the coal hydrogenation system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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