Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1984-02-09
1985-02-12
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
208182, 208184, 210663, 210669, 210774, 210806, B01D 1500
Patent
active
044989920
ABSTRACT:
A process for treating contaminated transformer oil which comprises heating the contaminated transformer oil in a first heater to a temperature in the range of 100.degree. to 125.degree. F., passing the heated contaminated oil from the first heater through an adsorber containing Fuller's earth of about 30 to 60 mesh particle size, conducting the treated oil from the adsorber to a chiller where the temperature is reduced to about 50.degree. to 70.degree. F., conducting the treated oil from the chiller to a centrifuge to remove free water, conducting the treated oil from the centrifuge to a second heater where the oil is heated to a temperature of about 100.degree. to 160.degree. F. (preferably about 120.degree. F.), conducting the treated oil from the second heater to a degasifier wherein the oil is subjected to a vacuum of about 0.2 to 2 mm of mercury, removing the treated oil from the degasifier and passing it through a polishing filter.
REFERENCES:
patent: 3339346 (1967-09-01), Buchanan
patent: 3675395 (1972-07-01), Baranowski
patent: 4144162 (1979-03-01), Edgar et al.
patent: 4340471 (1982-07-01), Jordan
patent: 4353798 (1982-10-01), Foss
patent: 4379752 (1983-04-01), Norman
patent: 4416767 (1983-11-01), Jordan
Ansi/IEEE C57.106-1977.
Schenck, Robert, "Transformer Oil Conditioning Saves Time and Money", Transmission and Distribution, Jan. 1983, pp. 40-41.
Pennwalt Corporation Bulletin 950 (981-SM-1P).
Pennwalt Corporation Data Sheet 910D (583-5M-1P).
Cintins Ivars
Dorman William S.
Petro-Williams Service Company
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