Dewaxing process

Details Dewaxing process Dewaxing process

1982-07-22

1984-05-08

Garvin, Patrick

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

208 33, 208 37, C10G 7306, C10G 7326

Patent

active

044473117

ABSTRACT:
A dewaxing process for reducing the pour point of waxy oils in which the oil is cooled by direct contact with a liquid autorefrigerant such as propane. The wax which separates upon cooling is removed by flotation assisted by the bubbles of vaporized autorefrigerant which rise through the oil to form a frothy slurry of wax which can be decanted and the wax recovered from it. A dewaxing solvent such as methyl ethyl ketone may be used to assist separation of the wax.

REFERENCES:
patent: 2164773 (1939-07-01), Knowles
patent: 2224109 (1940-12-01), Stearns
patent: 2302177 (1942-11-01), Bray et al.
patent: 2314994 (1943-03-01), Lawson et al.
patent: 2370453 (1945-02-01), Dons et al.
patent: 2719817 (1955-10-01), Doorn
patent: 2760904 (1956-08-01), Ford
patent: 2904496 (1959-10-01), Bloch
patent: 3347775 (1967-10-01), Tritsmans
patent: 4111790 (1978-09-01), West

Affiliated with

Also associated with

Rating

Dewaxing process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dewaxing process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dewaxing process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1601320