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Title: Coal liquefaction with subsequent bottoms pyrolysis

Abstract

In a coal liquefaction process wherein heavy bottoms produced in a liquefaction zone are upgraded by coking or a similar pyrolysis step, pyrolysis liquids boiling in excess of about 1000.degree. F. are further reacted with molecular hydrogen in a reaction zone external of the liquefaction zone, the resulting effluent is fractionated to produce one or more distillate fractions and a bottoms fraction, a portion of this bottoms fraction is recycled to the reaction zone, and the remaining portion of the bottoms fraction is recycled to the pyrolysis step.

Inventors:
 [1]
  1. Queens, NY
Issue Date:
OSTI Identifier:
863059
Patent Number(s):
4085031
Assignee:
Exxon Research & Engineering Co. (Linden, NJ)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
DOE Contract Number:  
E(49-18)-2353
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
coal; liquefaction; subsequent; bottoms; pyrolysis; process; heavy; produced; zone; upgraded; coking; similar; step; liquids; boiling; excess; 1000; degree; reacted; molecular; hydrogen; reaction; external; resulting; effluent; fractionated; produce; distillate; fractions; fraction; portion; recycled; remaining; molecular hydrogen; bottoms fraction; liquefaction zone; liquefaction process; coal liquefaction; reaction zone; remaining portion; pyrolysis step; distillate fraction; distillate fractions; heavy bottoms; liquids boiling; /201/208/

Citation Formats

Walchuk, George P. Coal liquefaction with subsequent bottoms pyrolysis. United States: N. p., 1978. Web.
Walchuk, George P. Coal liquefaction with subsequent bottoms pyrolysis. United States.
Walchuk, George P. Sun . "Coal liquefaction with subsequent bottoms pyrolysis". United States. https://www.osti.gov/servlets/purl/863059.
@article{osti_863059,
title = {Coal liquefaction with subsequent bottoms pyrolysis},
author = {Walchuk, George P},
abstractNote = {In a coal liquefaction process wherein heavy bottoms produced in a liquefaction zone are upgraded by coking or a similar pyrolysis step, pyrolysis liquids boiling in excess of about 1000.degree. F. are further reacted with molecular hydrogen in a reaction zone external of the liquefaction zone, the resulting effluent is fractionated to produce one or more distillate fractions and a bottoms fraction, a portion of this bottoms fraction is recycled to the reaction zone, and the remaining portion of the bottoms fraction is recycled to the pyrolysis step.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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