Staged process for reactivation of spent zeolite catalyst partic

Details Staged process for reactivation of spent zeolite catalyst partic Staged process for reactivation of spent zeolite catalyst partic

1991-04-23

1992-09-29

Konopka, Paul E.

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

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208111, 502 34, 585408, 585640, 585733, B01J 3810, B01J 2938, C07C 1120, C10G 1105

Patent

active

051513935

ABSTRACT:
The invention comprises the discovery has been made that the reactivation of spent medium pore, shape selective metallosilicate catalyst particles can be enhanced by carrying out the removal of deactivating coke and carbonaceous deposits on the surface and within the pores of the catalyst using hydrogen in a two stage process. The first stage consists of reactivation with hydrogen at elevated temperature and relatively high pressure to crack, strip and remove the more volatile deactivating coke and carbonaceous components on the catalyst surface. The second stage of the reactivation process is carried out at low pressure and elevated temperature, leading to the stripping of the deactivating carbonaceous residue of low volatility on the catalyst surface and pores. The effect of the two stage regeneration process is to improve the removal of coke and carbonaceous materials from the catalyst surface, pores and voids providing a more effective reactivated catalyst.

REFERENCES:
patent: 3360481 (1967-12-01), McLaren et al.
patent: 3412013 (1968-11-01), Bowles
patent: 4181598 (1980-01-01), Gillespie
patent: 4283271 (1981-08-01), Garwood
patent: 4358395 (1982-11-01), Haag
patent: 4419220 (1983-12-01), LaPierre
patent: 4423272 (1983-12-01), Forbus et al.
patent: 4508836 (1985-04-01), Haag
patent: 4683052 (1987-07-01), Degnan, Jr. et al.
patent: 4814535 (1989-03-01), Yurchak

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