Cascade hydrodewaxing process

Patent · Tue Jul 08 04:00:00 EDT 1986

OSTI ID:5458507

Yen, J H

A cascade catalytic hydrodewaxing process is described comprising: (a) passing a hydrocarbon feedstock containing waxy components selected from a group of normal paraffins and slightly branched chain paraffins over a hydroisomerization catalyst comprising a crystalline silicate zeolite having the structure of ZSM-12 in admixture with a crystalline silicate zeolite having the structure of ZSM-23, the admixture having hydrogenation/dehydrogenation activity to hydroisomerize the feedstock; and (b) passing at least a majority of the normally liquid hydrocarbon recovered from step (a) over a dewaxing catalyst comprising a crystalline silicate zeolite having a structure of ZSM-5, the zeolite of step (b) having hydrogenation/-dehydrogenation activity to dewax the recovered hydrocarbon.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4599162
• OSTI ID: 5458507
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
CATALYSIS
CATALYSTS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DEHYDROGENATION
DEWAXING
DISPERSIONS
HYDROCARBONS
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
MATERIALS
MINERALS
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICATES
SILICON COMPOUNDS
ZEOLITES