HIGH PURITY PARAFFINIC SOLVENT COMPOSITIONS, AND PROCESS FORTHEIR MANUFACTURE

Discloses high purity solvent compositions constituted of n-paraffins and isoparaffins, with the isoparaffins containing predominantly methyl branches, and having an isoparaffin:n-paraffin ratio sufficient to provide superior low temperature properties and low viscosities. The solvent compositions a...

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Main Authors SILVERBERG, STEVEN EARL, WITTENBRINK, ROBERT JAY, RYAN, DANIEL FRANCIS
Format Patent
LanguageEnglish
French
Published 03.08.2004
Edition6
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:Discloses high purity solvent compositions constituted of n-paraffins and isoparaffins, with the isoparaffins containing predominantly methyl branches, and having an isoparaffin:n-paraffin ratio sufficient to provide superior low temperature properties and low viscosities. The solvent compositions are made by a process wherein a waxy, or long chain paraffinic feed, especially a Fischer-Tropsch wax, is reacted over a dual function catalyst to produce hydroisomerization and hydrocrackin g reactions at 700 .degree.Ft conversion levels ranging from about 20 to 90 wt.% to provide a C5-1050 .degree.F crude fraction. The C5-1050 .degree.F crude fraction is then topped via atmospheric distillation to produce a low boiling fraction with an upper end point boiling between about 650 .degree.F and 750 .degree.F. The low boiling fraction is fractionated and a narrow boiling range solvent obtained therefrom; one which can be further divided into solvent grades of various boiling ranges.
Bibliography:Application Number: CA19962238417