C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/252
C10G 73/04 (2006.01) C10G 73/08 (2006.01) C10G 73/32 (2006.01)
Patent
CA 1112201
ABSTRACT OF THE DISCLOSURE In a DILCHILL dewaxing process employing rotary drum wax filters, the waxy slurry in the filters must be periodically dumped and the filters washed with hot solvent to remove wax fines which plug the cloth. The dumped slurry contains useful oil which can be recovered, with no detriment to the subsequent filter rate, by mixing the dumped slurry with the hot filter washings and recyling this mixture back into the DILCHILL dewaxing zone at one or more points therein wherein the temperature of the recycled mixture is from about 5 to 50°F. lower than the bulk temperature of the oil in the dewaxing zone and in an amount ranging from about 0.02 to 0.4 volumes of recycle per volume of feed.
314940
Exxon Research And Engineering Company
Swabey Ogilvy Renault
LandOfFree
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