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Title: Donor solvent coal liquefaction with bottoms recycle at elevated pressure

Abstract

An improved process for liquefying solid carbonaceous materials wherein increased naphtha yields are achieved by effecting the liquefaction at a pressure within the range from about 1750 to about 2800 psig in the presence of recycled bottoms and a hydrogen-donor solvent containing at least 0.8 wt % donatable hydrogen. The liquefaction is accomplished at a temperature within the range from about 700.degree. to about 950.degree. F. The coal:bottoms ratio in the feed to liquefaction will be within the range from about 1:1 to about 5:1 and the solvent or diluent to total solids ratio will be at least 1.5:1 and preferably within the range from about 1.6:1 to about 3:1. The yield of naphtha boiling range materials increases as the pressure increases but generally reaches a maximum at a pressure within the range from about 2000 to about 2500 psig.

Inventors:
 [1];  [2];  [1];  [3];  [4]
  1. (Houston, TX)
  2. (Seabrook, TX)
  3. (Baytown, TX)
  4. (Friendswood, TX)
Issue Date:
Research Org.:
Exxon Research and Engineering Co. (Florham Park, NJ)
OSTI Identifier:
864322
Patent Number(s):
4347117
Assignee:
Exxon Research & Engineering Co. (Florham Park, NJ) OSTI
DOE Contract Number:  
FC01-77ET10069
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
donor; solvent; coal; liquefaction; bottoms; recycle; elevated; pressure; improved; process; liquefying; solid; carbonaceous; materials; increased; naphtha; yields; achieved; effecting; range; 1750; 2800; psig; presence; recycled; hydrogen-donor; containing; wt; donatable; hydrogen; accomplished; temperature; 700; degree; 950; ratio; feed; diluent; total; solids; preferably; yield; boiling; increases; reaches; maximum; 2000; 2500; pressure increase; solvent containing; donor solvent; improved process; carbonaceous materials; coal liquefaction; carbonaceous material; solid carbonaceous; boiling range; elevated pressure; solid carbon; hydrogen-donor solvent; total solids; pressure increases; solvent coal; naphtha yields; increased naphtha; liquefying solid; /208/

Citation Formats

Bauman, Richard F., Taunton, John W., Anderson, George H., Trachte, Ken L., and Hsia, Steve J. Donor solvent coal liquefaction with bottoms recycle at elevated pressure. United States: N. p., 1982. Web.
Bauman, Richard F., Taunton, John W., Anderson, George H., Trachte, Ken L., & Hsia, Steve J. Donor solvent coal liquefaction with bottoms recycle at elevated pressure. United States.
Bauman, Richard F., Taunton, John W., Anderson, George H., Trachte, Ken L., and Hsia, Steve J. Fri . "Donor solvent coal liquefaction with bottoms recycle at elevated pressure". United States. https://www.osti.gov/servlets/purl/864322.
@article{osti_864322,
title = {Donor solvent coal liquefaction with bottoms recycle at elevated pressure},
author = {Bauman, Richard F. and Taunton, John W. and Anderson, George H. and Trachte, Ken L. and Hsia, Steve J.},
abstractNote = {An improved process for liquefying solid carbonaceous materials wherein increased naphtha yields are achieved by effecting the liquefaction at a pressure within the range from about 1750 to about 2800 psig in the presence of recycled bottoms and a hydrogen-donor solvent containing at least 0.8 wt % donatable hydrogen. The liquefaction is accomplished at a temperature within the range from about 700.degree. to about 950.degree. F. The coal:bottoms ratio in the feed to liquefaction will be within the range from about 1:1 to about 5:1 and the solvent or diluent to total solids ratio will be at least 1.5:1 and preferably within the range from about 1.6:1 to about 3:1. The yield of naphtha boiling range materials increases as the pressure increases but generally reaches a maximum at a pressure within the range from about 2000 to about 2500 psig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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