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:
-
- Houston, TX
- 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)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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}
}