solvent dewaxing

solvent dewaxing

[′säl·vənt di‚waks·iŋ]
(chemical engineering)
A petroleum refinery process for solvent removal of wax from oils; the mixture of waxy oil and solvent is chilled, then filtered or centrifuged to remove the precipitated oil; the solvent is recovered for reuse.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Mentioned in ?
References in periodicals archive ?
Currently, the lube refining industry is at a developing stage with catalytic dewaxing and MLDW technology gathering momentum as replacements for solvent extraction and solvent dewaxing. Dewaxing is the process of removing impurities from liquids, such as diesel, by chilling, pressing, or treatment with a solvent.
As Rowzee described in his Chemistry in Canada story about Sarnia's petrochemical industry, developments during the early 20th century continued apace, embracing the solvent dewaxing of lubrication oils and adoption of the suspensoid cracking process at Imperial's Sarnia refinery.
For example, solvent dewaxing chills the waxy raffinate so that the crystallized wax can be removed through filtration.