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Title: Separation of catalyst from Fischer-Tropsch slurry

Abstract

In a catalytic process for converting synthesis gas including hydrogen and carbon monoxide to hydrocarbons and oxygenates by a slurry Fischer-Tropsch synthesis, the wax product along with dispersed catalyst is removed from the slurry and purified by removing substantially all of the catalyst prior to upgrading the wax and returning a portion to the Fischer-Tropsch reaction. Separation of the catalyst particles from the wax product is accomplished by dense gas and/or liquid extraction in which the organic compounds in the wax are dissolved and carried away from the insoluble inorganic catalyst particles that are primarily inorganic in nature. The purified catalyst-free wax product can be subsequently upgraded by various methods such as hydrogenation, isomerization, hydrocracking, conversion to gasoline and other products over ZSM-5 aluminosilicate zeolite, etc. The catalyst particles are returned to the Fischer-Tropsch Reactor by mixing them with a wax fraction of appropriate molecular weight, boiling point and viscosity to avoid reactor gelation. 2 figs.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Burns and Roe Inc
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
675798
Patent Number(s):
5827903
Application Number:
PAN: 8-594,969
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
AC22-89PC88400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 27 Oct 1998
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; FISCHER-TROPSCH SYNTHESIS; CATALYSTS; WAXES; SEPARATION PROCESSES; EXTRACTION; DISSOLUTION; REFINING; RECYCLING

Citation Formats

White, C M, Quiring, M S, Jensen, K L, Hickey, R F, and Gillham, L D. Separation of catalyst from Fischer-Tropsch slurry. United States: N. p., 1998. Web.
White, C M, Quiring, M S, Jensen, K L, Hickey, R F, & Gillham, L D. Separation of catalyst from Fischer-Tropsch slurry. United States.
White, C M, Quiring, M S, Jensen, K L, Hickey, R F, and Gillham, L D. Tue . "Separation of catalyst from Fischer-Tropsch slurry". United States.
@article{osti_675798,
title = {Separation of catalyst from Fischer-Tropsch slurry},
author = {White, C M and Quiring, M S and Jensen, K L and Hickey, R F and Gillham, L D},
abstractNote = {In a catalytic process for converting synthesis gas including hydrogen and carbon monoxide to hydrocarbons and oxygenates by a slurry Fischer-Tropsch synthesis, the wax product along with dispersed catalyst is removed from the slurry and purified by removing substantially all of the catalyst prior to upgrading the wax and returning a portion to the Fischer-Tropsch reaction. Separation of the catalyst particles from the wax product is accomplished by dense gas and/or liquid extraction in which the organic compounds in the wax are dissolved and carried away from the insoluble inorganic catalyst particles that are primarily inorganic in nature. The purified catalyst-free wax product can be subsequently upgraded by various methods such as hydrogenation, isomerization, hydrocracking, conversion to gasoline and other products over ZSM-5 aluminosilicate zeolite, etc. The catalyst particles are returned to the Fischer-Tropsch Reactor by mixing them with a wax fraction of appropriate molecular weight, boiling point and viscosity to avoid reactor gelation. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {10}
}