System for separating paraffin from oil in refineries
Patent 4262790 Issued on April 21, 1981. Estimated Expiration Date: 
November 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1636730 2614056 3232069 3506564 InventorsApplicationNo. 06/094712 filed on 11/16/1979US Classes:196/14.5, DEWAXING208/37, Chilling62/537, Utilizing a constituent of the original mixture or solution as refrigerant62/540With measured parameter responsive controlExaminersPrimary: Garris, BradleyInternational ClassesC10G 73/00 (20060101)C10G 73/34 (20060101) B01D 9/00 (20060101) Foreign Application Priority Data1978-04-13 ITAbstractApparatus for separating paraffin from oil in refineries wherein such separation is accomplished by a cooling process, in a heat exchanger, the apparatus controlling the cooling process by sensing either the pressure upstream of the heat exchanger and directly controlling the flow through a heat exchanger bypass, or sensing the temperature downstream of the heat exchanger and inversely controlling the flow through a heat exchanger bypass, the flow control in each case regulating the flow of cooling liquid through the heat exchanger. | |
