Process for withdrawing catalyst particles from a reaction zone

Details Process for withdrawing catalyst particles from a reaction zone Process for withdrawing catalyst particles from a reaction zone

1985-02-07

1987-04-21

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208153, 208165, 208113, 208108, 208209, C10B 3102, C10B 3112

Patent

active

046594558

ABSTRACT:
The invention concerns a process for withdrawing catalyst, particularly from a moving bed.
The device is characterized in that fins (4) (see FIG. 1A), shaped as corner-plates, are arranged, on a plate (6) which supports the catalyst bed radially around each vertical duct for catalyst withdrawal, so that the flow of catalyst particles converges towards the withdrawing ducts.
The apparatus is useful for example in hydroconversion reactions, particularly in hydrotreatments of heavy oil cuts.

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patent: 4295967 (1981-10-01), Kurima et al.
patent: 4444653 (1984-04-01), Euzen et al.
patent: 4478707 (1984-10-01), Bischoff et al.

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