C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/58
C10G 29/20 (2006.01) C10G 29/06 (2006.01)
Patent
CA 1198995
Abstract of the Disclosure In a process for producing an essentially ash-free oil stock from a lubricating oil containing ash forming components comprising reacting the oil with an aqueous ammonium salt capable of reacting with the ash-containing components and heating the thus treated oil at a temperature in the range of about 300°C to about 420°C to increase the amount of the ash-forming components removed, the improvement comprising not exposing the oil to a temperature greater than 200°C before the oil is passed into a large volume of the oil already at a temperature in the range of about 300°C to about 400°C.
430417
Beckworth Alden E.
Howell Jerald A.
Tabler Donald C.
Osler Hoskin & Harcourt Llp
Phillips Petroleum Company
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