Title: Deasphalting method
Application Number: 95111271 Application Date: 1995.03.10
Publication Number: 1131178 Publication Date: 1996.09.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10C1/00
Applicant(s) Name: Nanchong Oil Refinery, Sichuan Petroleum Administr Address: 637000
Inventor(s) Name: Wang Surong
Attorney & Agent:
Abstract:
     The present invention relates to a deasphalting method, and is charac erized by that an inorganic material is added to depressurized residuum according to a certain proportion; in the course of stirring, the depressurized residuum is heated; then the stirring operation is stopped; after cooled, the separated asphalt is discharged; then the depressurized residuum is further heated, it has no need of stirring; after constant temp. the separated asphalt is discharged, so that the whole technological process for deasphalting by using inorganic material is completed. Said invention only has need of two non-pressure tanks, and the recovery ratio of the depressurized residuum is high.
Time: 4
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