Recovery of slurry unsupported catalyst

摘要

A method of recovering unsupported fine catalyst from heavy oil comprises combining a slurry comprising unsupported fine catalyst in heavy oil with solvent to form a combined slurry-solvent stream. The combined slurry-solvent stream is filtered in a deoiling zone. A stream comprising unsupported fine catalyst and solvent is recovered from the deoiling zone. Unsupported fine catalyst is separated from the stream comprising unsupported fine catalyst and solvent. Filtering in the deoiling zone can comprise filtering the slurry and solvent through a cross-flow microfiltration unit, recovering a retentate stream of the cross-flow microfiltration unit, combining the retentate stream of the cross-flow microfiltration unit with solvent to form a combined retentate-solvent stream, and filtering the combined retentate-solvent stream through a cross-flow microfiltration unit.

主权项

1. A method of recovering unsupported fine catalyst from heavy oil, the method comprising:
a) combining a slurry comprising unsupported fine catalyst in heavy oil with solvent to form a combined slurry-solvent stream; b) filtering the combined slurry-solvent stream in a deoiling zone employing at least a membrane that is rapidly displaced in a horizontal direction thereby generating a second stream comprising solvent and heavy oil and a retentate stream; c) recovering from the deoiling zone the retentate stream comprising unsupported fine catalyst and solvent; and d) separating the unsupported fine catalyst from the retentate stream comprising unsupported fine catalyst and solvent by a drying step generating a dry solid containing the unsupported fine catalyst with less than 0.5 wt % heavy oil.