摘要
On the basis of fundamental research on the foaming and antifoaming mechanism in propane deasphalting units, the preparation and the simulated performance evaluation of seven antifoaming agents were conducted in the laboratory scale. The test results showed that the complex silicone antifoamer dis played better performance than other additives in both antifoaming and foam breaking. The results of commercial application also support the fact that foaming problems in the strippers of the deasphalting unit can be effectively suppressed by PAF-02 antifoamer. Successful foaming control has improved the operation efficiency of the stripper along with increasing its processing capacity. Application of the PAF-02 antifoamer has shown no negative impact on the downstream operation or product quality. Adoption of the PAF-02 antifoamer has revealed the advantages of ease in application, lower operating cost, and high antifoaming performance.
