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Separation of catalyst from Fischer-Tropsch slurry

Patent ·
OSTI ID:871936
 [1];  [2];  [1];  [3];  [4]
  1. Pittsburgh, PA
  2. Katy, TX
  3. Bethel Park, PA
  4. Bartlesville, OK
+ Show Author Affiliations

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 slurring them with a wax fraction of appropriate molecular weight, boiling point and viscosity to avoid reactor gelation.

Research Organization:
Burns and Roe Inc
DOE Contract Number:
AC22-89PC88400
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Number(s):
US 5827903
Application Number:
08/594,969
OSTI ID:
871936
Country of Publication:
United States
Language:
English

References (5)

Chromatography with sub- and supercritical eluents: influence of temperature, pressure and flow-rate on the behaviour of lower alkanes journal January 1985
Analysis of commercial waxes using capillary supercritical fluid chromatography—mass spectrometry journal January 1987
The Separation of Nonvolatile Substances by Means of Compressed Gases in Countercurrent Processes journal October 1978
Separation of Fischer−Tropsch Catalyst/Wax Mixtures Using Dense-Gas and Liquid Extraction journal January 1996
Fluid Phase Equilibria in Binary Ethylene + n-Alkane Systems journal September 1984

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Related Subjects

/518/252/502/
accomplished
aluminosilicate
appropriate
avoid
boiling
carbon
carbon monoxide
carried
catalyst
catalyst particle
catalyst particles
catalytic
catalytic process
compounds
conversion
converting
converting synthesis
dense
dense gas
dispersed
dissolved
etc
extraction
fischer-tropsch
fischer-tropsch reaction
fischer-tropsch synthesis
fraction
free
gas
gas including
gasoline
gelation
hydrocarbons
hydrocracking
hydrogen
hydrogenation
including
including hydrogen
inorganic
insoluble
isomerization
liquid
liquid extract
liquid extraction
methods
molecular
molecular weight
monoxide
nature
organic
organic compound
organic compounds
oxygenates
particles
portion
primarily
prior
process
product
products
purified
reaction
reactor
removed
removing
returned
returning
separation
slurring
slurry
subsequently
substantially
synthesis
synthesis gas
upgraded
upgrading
various
various methods
viscosity
wax
weight
zeolite
zsm-5