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Title: Use of ammonia to reduce the viscosity of bottoms streams produced in hydroconversion processes

Abstract

Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular weight liquids and produce a heavy bottoms stream containing high molecular weight liquids and unconverted carbonaceous material. The viscosity of the bottoms streams produced in the separation step or steps is prevented from increasing rapidly by treating the feed to the separation step or steps with ammonia gas prior to or during the separation step or steps. The viscosity of the heavy bottoms stream produced in the final separation step is also controlled by treating these bottoms with ammonia gas. In a preferred embodiment of the invention, the effluent from the hydroconversion reactor is subjected to an atmospheric distillation followed by a vacuum distillation and the feeds to these distillations are contacted with ammonia during the distillations.

Inventors:
 [1];  [1];  [2];  [1];  [2]
  1. (Houston, TX)
  2. (Baytown, TX)
Issue Date:
Research Org.:
Exxon Research and Engineering Co.
OSTI Identifier:
865005
Patent Number(s):
4448665
Assignee:
Exxon Research and Engineering Co. (Florham Park, NJ) OSTI
DOE Contract Number:  
EF-77-A-01-2893
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ammonia; reduce; viscosity; bottoms; streams; produced; hydroconversion; processes; coal; petroleum; residuum; similar; carbonaceous; feed; materials; subjected; presence; molecular; hydrogen; produce; effluent; separation; steps; remove; weight; liquids; heavy; stream; containing; unconverted; material; step; prevented; increasing; rapidly; treating; gas; prior; final; controlled; preferred; embodiment; reactor; atmospheric; distillation; followed; vacuum; feeds; distillations; contacted; ammonia gas; molecular hydrogen; conversion process; feed material; preferred embodiment; carbonaceous material; molecular weight; stream containing; feed materials; vacuum distillation; similar carbonaceous; separation step; streams produced; carbonaceous feed; separation steps; heavy bottoms; hydroconversion process; petroleum resid; atmospheric distillation; /208/

Citation Formats

Zaczepinski, Sioma, Billimoria, Rustom M., Tao, Frank, Lington, Christopher G., and Plumlee, Karl W. Use of ammonia to reduce the viscosity of bottoms streams produced in hydroconversion processes. United States: N. p., 1984. Web.
Zaczepinski, Sioma, Billimoria, Rustom M., Tao, Frank, Lington, Christopher G., & Plumlee, Karl W. Use of ammonia to reduce the viscosity of bottoms streams produced in hydroconversion processes. United States.
Zaczepinski, Sioma, Billimoria, Rustom M., Tao, Frank, Lington, Christopher G., and Plumlee, Karl W. Sun . "Use of ammonia to reduce the viscosity of bottoms streams produced in hydroconversion processes". United States. https://www.osti.gov/servlets/purl/865005.
@article{osti_865005,
title = {Use of ammonia to reduce the viscosity of bottoms streams produced in hydroconversion processes},
author = {Zaczepinski, Sioma and Billimoria, Rustom M. and Tao, Frank and Lington, Christopher G. and Plumlee, Karl W.},
abstractNote = {Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular weight liquids and produce a heavy bottoms stream containing high molecular weight liquids and unconverted carbonaceous material. The viscosity of the bottoms streams produced in the separation step or steps is prevented from increasing rapidly by treating the feed to the separation step or steps with ammonia gas prior to or during the separation step or steps. The viscosity of the heavy bottoms stream produced in the final separation step is also controlled by treating these bottoms with ammonia gas. In a preferred embodiment of the invention, the effluent from the hydroconversion reactor is subjected to an atmospheric distillation followed by a vacuum distillation and the feeds to these distillations are contacted with ammonia during the distillations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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