초록 ▼

A process for passivating contaminating metal on a hydrocarbon cracking catalyst is provided. The catalyst is contacted within a hydrocarbon catalytic cracking unit with a stabilized dispersion. The dispersion comprises a fluid vehicle, a dispersion agent, and finely milled particles of one or more

A process for passivating contaminating metal on a hydrocarbon cracking catalyst is provided. The catalyst is contacted within a hydrocarbon catalytic cracking unit with a stabilized dispersion. The dispersion comprises a fluid vehicle, a dispersion agent, and finely milled particles of one or more metals or metal compounds for passivation of metal-contaminated cracking catalysts. The dispersion is preferably produced by a process wherein an agitated media mill is loaded with comminuting media, fluid vehicle, dispersion agent and particles of a metal or metal compound for passivation of metal-contaminated cracking catalysts. The comminuting media, fluid vehicle, and particles are then agitated until the particles are reduced in size by at least 10% and have a volumetric average particle size of less than 0.5 microns.

대표청구항 ▼

[ What is claimed is:] [1.] A process for passivating contaminating metal on a hydrocarbon cracking catalyst which comprises contacting said catalyst within a hydrocarbon catalytic cracking unit with a stable dispersion, said dispersion comprising a fluid vehicle, a dispersion agent, and finely mill

[ What is claimed is:] [1.] A process for passivating contaminating metal on a hydrocarbon cracking catalyst which comprises contacting said catalyst within a hydrocarbon catalytic cracking unit with a stable dispersion, said dispersion comprising a fluid vehicle, a dispersion agent, and finely milled particles of one or more metal or metal compound for passivation of metal contaminated cracking catalyst within a hydrocarbon catalytic cracking unit, said particles having a volumetric average particle size of less than 0.1 micron and at least 99% of said particles having sizes less than 1 micron.