Process for the complete replacement of particles in vessels

Details Process for the complete replacement of particles in vessels Process for the complete replacement of particles in vessels

B - Operations, Transporting

01

J

252/1.C

B01J 23/94 (2006.01) B01J 8/00 (2006.01) B01J 38/00 (2006.01) C10G 45/00 (2006.01)

Patent

CA 1209116

A B S T R A C T PROCESS FOR THE COMPLETE REPLACEMENT OF PARTICLES IN VESSELS Process for the complete replacement under operating conditions of particles in a vessel provided with a feed inlet and, if desired, a separate particle inlet, a particle outlet and an effluent outlet, wherein part of a feed passing through the vessel during withdrawal of particles is by-passing the vessel when the particles still present in the vessel do not occupy more than 20%v of the volume initially occupied by particles and the feed to be processed is passed through the vessel before or during the addition of fresh particles. The process is particularly suitable for the complete replacement under operating conditions of spent hydro- demetallization catalysts.

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