Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1977-05-05
1981-02-03
Cintins, Ivars C.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210924, 210693, C02F 128
Patent
active
042487056
ABSTRACT:
An improved process for removing oil from oily waste water streams, particularly from aqueous refinery streams wherein the oil is present as a stable oil-in-water emulsion, which comprises passing the stream through a filter bed of particulate, unprocessed PVC or its copolymers mixed with a granular, inert and preferably porous filler material such as particles of coke or carbon. The improvement substantially increases bed life and has unexpectedly resulted in higher oil-absorption capacity of the filter bed.
REFERENCES:
patent: 3562153 (1971-02-01), Tully et al.
patent: 3800945 (1974-04-01), Fowler
patent: 3862963 (1975-01-01), Hoshi et al.
patent: 4008160 (1977-02-01), Vadekar et al.
Cintins Ivars C.
Corcoran Edward M.
Exxon Research & Engineering Co.
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