SIDE-STREAM TEST AND COMMERCIAL APPLICATION OF FLEXIBLE FILTER TECHNOLOGY FOR FCC SLURRY
FCC slurry filtration test was carried out in the 5 kt/a side-stream test unit using the remove solid flexible filter(RSFF)technique in Shanghai Petrochemical Corporation.The results showed that the yield of the de-solid slurry was about 90％and the mass fraction of(A1+Si)in the de-solid slurry was about 10 μg/g.The particle size smaller than 1 μm could be effectively removed by RSFF technology.In the initial stage of filtration,the filtration pressure difference rose rapidly and then slowly.The inflexion of filtration pressure difference had a positively correlation with the feed flow rate.Based on the above results,an industrial application test was carried out in a 3 00 kt/a unit of Maoming Wailian Petrochemical Company.The results showed that the average yield of the de-solid slurry was over 92％,the ash content in the de-solid slurry was less than 100 μg/g,and the ash removal rate was about 98％.RSFF technology does not need a lot of material circulation and has low wear to equipment.It is suitable for processing slurry directly from FCC unit and even purchased slurry.
FCC slurryflexibledesolidationfilterside-stream test
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