percolation filtration

percolation filtration

[pər·kə′lā·shən fil‚trā·shən]
(chemical engineering)
A continuous petroleum-refinery process in which lubricating oils and waxes are percolated through a clay bed to improve color, odor, and stability.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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