Separation of active catalyst particles from spent catalyst part

Details Separation of active catalyst particles from spent catalyst part Separation of active catalyst particles from spent catalyst part

1991-10-02

1993-05-11

Konopka, Paul E.

Mineral oils: processes and products

Refining

Sulfur removal

208 52CT, 208216R, 209 2, 209 20, 209138, 209471, 502 21, 502 26, 502 29, 502 30, 502 31, 502 34, 502 41, 502516, C10G 4508, B01J 3872, B01J 3856, B07B 700

Patent

active

052098400

ABSTRACT:
Spent hydrotreating catalyst having carbonaceous and metallic deposits and of regular geometric shape after being stripped of process oil is fluidized by flowing air upwardly through the catalyst at a velocity sufficient to expand the bed thereby segregating the catalyst particles into a high activity, upper, less-contaminated fraction and a lower, more-contaminated fraction and recycling the high activity fraction to a hydrotreating process. Optionally, the high activity fraction can be regenerated with carbon burnoff or rejuvenated by acid leaching followed by regeneration with carbon burnoff to further improve catalyst activity.

REFERENCES:
patent: 2567207 (1951-09-01), Hoge
patent: 2631981 (1953-03-01), Watson et al.
patent: 3754964 (1973-08-01), Seuret et al.
patent: 3809644 (1974-05-01), Johnson et al.
patent: 4057491 (1977-11-01), Bushnell et al.
patent: 4287088 (1981-09-01), Sirkar
patent: 4311583 (1982-01-01), Woodle
patent: 4325818 (1982-04-01), Woodle
patent: 4454240 (1984-06-01), Ganguli
patent: 4621069 (1986-11-01), Ganguli
patent: 4720473 (1988-01-01), Welch et al.
patent: 4795726 (1989-01-01), Schaper et al.
patent: 4853103 (1989-08-01), Harandi
M. D. Guillen, et al., Study of the Effectiveness of 27 Organic Solvents in the Extraction of Coal Tar Pitches, "Energy and Fuels," vol. 5, 1991, pp. 188-192.

Affiliated with

Also associated with

Rating

Separation of active catalyst particles from spent catalyst part does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation of active catalyst particles from spent catalyst part, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of active catalyst particles from spent catalyst part will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1348063