Process for improving the pour point of paraffinic feeds using a

Details Process for improving the pour point of paraffinic feeds using a Process for improving the pour point of paraffinic feeds using a

1997-11-25

1999-08-03

Griffin, Walter D.

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Chemical treatment

208 46, 208109, 208110, 208111, 208135, C10G 4564, C10G 4562

Patent

active

059320885

ABSTRACT:
The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which process the feed to be treated is brought into contact with a catalyst comprising NU-86 zeolite, preferably dealuminated, and at least one hydro-dehydrogenating element, at a temperature which is in the range 170.degree. C. to 500.degree. C., a pressure in the range 1 to 250 bar and an hourly space velocity in the range 0.05 to 100 h.sup.-1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed. The product from heavy feeds is fractionated to produce at least one cut including at least one middle distillate with a reduced pour point, and a residue including oil bases with a reduced pour point and a high viscosity index.

REFERENCES:
patent: 4574043 (1986-03-01), Chester et al.
patent: 5108579 (1992-04-01), Casci

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