SORDS PURIFICATION BY LBPSE: A SYSTEM AND METHOD FOR PROCESSING BACKWASHED CATALYST RETENTATE FILTERED FROM A FLUID CATALYTIC CRACKER SLURRY OIL RUN-DOWN STREAM

摘要

A method for separating catalyst particles from the slurry oil present in the retentate of a filtered slurry oil run-down stream is disclosed. The method comprises backwashing the run-down stream filter with a low boiling point solvent to extract slurry oil from the catalyst in the retentate. The backwash solution is sent to a digester where the cat" fines are separated from the hydrocarbon component (solvent and slurry oil). The cat' fines are collected and dried. The dried cat* fines can be transported via pneumatic systems, and can be regenerated for further use as FCC catalysts.