Catalytic dewaxing process

Patent · Tue Feb 10 04:00:00 EST 1987

OSTI ID:6737620

Adams, P L; Farcasiu, M

A process is described for producing a hydrodewaxed feedstock of acceptable pour point specifications and oxidative stability specifications, as measured by ASTM D-943. The process comprises contacting a feedstock, containing wax components in unacceptable amounts and thiophenic sulfur containing components and boiling above about 550/sup 0/F., with a catalyst comprising ZSM-5 and at least one element selected from the group consisting of elements of Group VIII and elements of Group VI in the presence of hydrogen at pressure, temperature and LHSV conditions effective to maintain hydrogenation of at least about 10% of the thiophenic sulfur containing components. The resulting hydrodewaxed feedstock exhibits acceptable oxidative stability as measured by ASTM D-943 and the necessity of hydrotreating conditions, subsequent to the hydrodewaxing, to achieve the oxidative stability, is eliminated.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4642176
• OSTI ID: 6737620
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
BOILING POINTS
CATALYSTS
CHEMICAL REACTIONS
DEWAXING
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGEN
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PETROLEUM
PHYSICAL PROPERTIES
POUR POINT
PRESSURE DEPENDENCE
QUANTITY RATIO
SEPARATION PROCESSES
SPECIFICATIONS
STABILITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THIOPHENE
TRANSITION TEMPERATURE
WAXES
ZEOLITES