초록

TAN containing oils, e.g., crudes, are treated by flashing to remove substantially all of the water therefrom, thermally treating the recovered liquid to reduce the naphthenic acid content thereof, and re-combining light gases recovered from the flashing step with the treated liquid.

대표청구항 ▼

[ We claim:] [1.] A process for reducing the total acid number (TAN) of TAN and water containing oils comprising: (a) flashing the oil and removing therefrom substantially all of the water; (b) separately recovering vapors comprised of light gases, water, and light hydrocarbons, and separately recov

[ We claim:] [1.] A process for reducing the total acid number (TAN) of TAN and water containing oils comprising: (a) flashing the oil and removing therefrom substantially all of the water; (b) separately recovering vapors comprised of light gases, water, and light hydrocarbons, and separately recovering liquid oil; (c) thermally treating the liquid in a reaction zone in which the water partial pressure is maintained below about 10 psia; (d) recovering light hydrocarbons from the vapors of step (b) and combining at least a portion of the recovered light hydrocarbons with the treated liquid.