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:
-
- 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 = {Sun Jan 01 00:00:00 EST 1978},
month = {Sun Jan 01 00:00:00 EST 1978}
}
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