Catalyst deoiling process

Details Catalyst deoiling process Catalyst deoiling process

B - Operations, Transporting

01

J

196/124

B01J 38/00 (2006.01) B01D 21/00 (2006.01) C10G 1/00 (2006.01) C10G 49/12 (2006.01)

Patent

CA 1277275

ABSTRACT OF THE DISCLOSURE An improved deoiling process is provided for removing substantial amounts of oil from spent catalyst withdrawn from resid hydrotreating units. In the pro- cess, a slurry of spent catalyst and oil is spirally con- veyed at an upward angle of inclination in a spiral clas- sifier. Oil is drained from the upwardly spiraling slurry to substantially separate the oil from the spent catalyst. The deoiled catalyst is discharged into a catalyst bin. Preferably, the bin is continuously weighed as the deoiled catalyst is discharged into the bin. The flow of deoiled catalyst into the bin is stopped when the weight of the catalyst-laden bin has reached a preselected weight.

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