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Title: Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers

Abstract

There is described an improved liquefaction process by which coal is converted to a low ash and low sulfur carbonaceous material that can be used as a fuel in an environmentally acceptable manner without costly gas scrubbing equipment. In the process, coal is slurried with a solvent, passed through a preheater and at least two dissolvers in series in the presence of hydrogen-rich gases at elevated temperatures and pressures. Solids, including mineral ash and unconverted coal macerals are separated from the condensed dissolver effluent. In accordance with the improved process, fresh hydrogen is fed to each dissolver and the entrained gas from each dissolver is separated from the slurry phase and removed from the reactor system before the condensed phase is passed to the next dissolver in the series. In accordance with another process, the feeds to the dissolvers are such that the top of each downstream dissolver is used as a gas-liquid separator.

Inventors:
 [1];  [2]
  1. (Bethlehem, PA)
  2. (Macungie, PA)
Issue Date:
Research Org.:
INTERNATIONAL COAL REFINING CO
OSTI Identifier:
864679
Patent Number(s):
4400261
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; separation; entrained; gases; slurry; exiting; staged; dissolvers; described; improved; converted; ash; sulfur; carbonaceous; material; fuel; environmentally; acceptable; manner; costly; gas; scrubbing; equipment; slurried; solvent; passed; preheater; series; presence; hydrogen-rich; elevated; temperatures; pressures; solids; including; mineral; unconverted; macerals; separated; condensed; dissolver; effluent; accordance; fresh; hydrogen; fed; phase; removed; reactor; feeds; top; downstream; gas-liquid; separator; unconverted coal; slurry phase; improved process; elevated temperatures; liquefaction process; elevated temperature; coal liquefaction; carbonaceous material; gas scrubbing; rich gas; coal macerals; mineral ash; hydrogen-rich gas; environmentally acceptable; improved liquefaction; condensed phase; staged dissolvers; gas-liquid separator; sulfur carbonaceous; hydrogen-rich gases; including mineral; entrained gas; entrained gases; acceptable manner; /208/

Citation Formats

Givens, Edwin N., and Ying, David H. S. Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers. United States: N. p., 1983. Web.
Givens, Edwin N., & Ying, David H. S. Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers. United States.
Givens, Edwin N., and Ying, David H. S. Sat . "Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers". United States. https://www.osti.gov/servlets/purl/864679.
@article{osti_864679,
title = {Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers},
author = {Givens, Edwin N. and Ying, David H. S.},
abstractNote = {There is described an improved liquefaction process by which coal is converted to a low ash and low sulfur carbonaceous material that can be used as a fuel in an environmentally acceptable manner without costly gas scrubbing equipment. In the process, coal is slurried with a solvent, passed through a preheater and at least two dissolvers in series in the presence of hydrogen-rich gases at elevated temperatures and pressures. Solids, including mineral ash and unconverted coal macerals are separated from the condensed dissolver effluent. In accordance with the improved process, fresh hydrogen is fed to each dissolver and the entrained gas from each dissolver is separated from the slurry phase and removed from the reactor system before the condensed phase is passed to the next dissolver in the series. In accordance with another process, the feeds to the dissolvers are such that the top of each downstream dissolver is used as a gas-liquid separator.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

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