Temperature control in draft tubes for catalyst rejuvenation

Details Temperature control in draft tubes for catalyst rejuvenation Temperature control in draft tubes for catalyst rejuvenation

1992-12-18

1994-02-22

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

502 31, 502 53, 518700, 422197, B01J 2394, B01J 2120, B01J 3810, C07C 104

Patent

active

052886735

ABSTRACT:
Catalyst in a slurry phase reactor is rejuvenated in said reactor using a substantially vertical draft tube fully immersed in the slurry which utilizes a rejuvenating gas injected substantially near the bottom of the substantially vertical draft tube whereby catalyst near the bottom of the slurry phase reactor is drawn up the draft tube and discharged from the top of the draft tube near the top of the slurry phase in said reactor, control over the rejuvenation temperature in the substantially vertical draft tube being achieved by means of insulating the draft tube and/or fitting the draft tube with heating or cooling means.

REFERENCES:
patent: 2567932 (1951-09-01), Garbo et al.
patent: 2572633 (1951-10-01), Lanning
patent: 2631159 (1953-03-01), Keith
patent: 3629143 (1971-12-01), Reveal
patent: 4894205 (1990-01-01), Westerman et al.
patent: 5157054 (1992-10-01), Herbolzheimer et al.

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