PROCESS FOR MAXIMIZING 371.DEGREE.+ PRODUCTION IN A FISCHER-TROPSCH PROCESS

A hydrocarbon synthesis (HCS) process wherein a Fisher-Tropsch reactor is operated to maximize the selectivity to 371~C+ boiling fraction while minimizing the production of less valuable products such as light gases (C1-C4), naphtha and diesel fractions. Inventive modes of operation to offset the ef...

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Main Authors SAY, GEOFFREY RHYS, BURNS, LOUIS FRANCIS, HOWSMON, GREGG JOHNSTON, WITTENBRINK, ROBERT JAY
Format Patent
LanguageEnglish
French
Published 17.05.2011
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
CRACKING HYDROCARBON OILS
FUELS
LUBRICANTS
METALLURGY
MINERAL WAXES
ORGANIC CHEMISTRY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION
RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES
REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS
REFORMING OF NAPHTHA
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Summary:A hydrocarbon synthesis (HCS) process wherein a Fisher-Tropsch reactor is operated to maximize the selectivity to 371~C+ boiling fraction while minimizing the production of less valuable products such as light gases (C1-C4), naphtha and diesel fractions. Inventive modes of operation to offset the effects of catalyst deactivation and maximize selectivity to 371~C+ boiling fraction are utilized including (a) reducing gas inlet velocity to maintain an optimal CO conversion level, (b) introducing additional active catalyst until a maximum loading is reached, and (c) increasing reactor temperature until productivity reaches a predetermined cut-off level.
Bibliography:Application Number: CA20022467520