摘要
采用催化裂化油浆柔性脱固(RSFF)技术在中国石化上海石油化工股份有限公司5 kt/a油浆脱固侧线试验装置上进行了油浆过滤试验.结果表明:侧线试验中脱固油浆产品收率为90％左右,脱固油浆中(Al+Si)质量分数为10μg/g左右,RSFF技术可有效脱除粒径小于1 μm的颗粒;在过滤开始阶段,过滤压差快速上升,然后缓慢上升,压差拐点与进料量呈正相关关系;提高再生触发压差可有效延长过滤周期.基于上述试验结果,在茂名外联石化有限公司300 kt/a装置上进行了工业应用试验,结果表明,脱固油浆产品平均收率达到92％以上,脱固油浆中灰分为100 μg/g以下,灰分脱除率达到98％以上.RSFF油浆脱固技术不需要大量物流循环,对设备磨损低,既适用于加工直接来自催化裂化装置的油浆,也适用于加工来自罐区的油浆甚至外购油浆.
Abstract
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.
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