IMPROVED COCATALYST FOR CATCHMENT OF HEAVY METALS IN FLUID-CATALYTIC CRACKING PROCESS Russian patent published in 2015 - IPC B01J23/02 B01J21/16 B01J37/08 C10G11/18 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to suppression methods of harmful effects of metals on catalytic cracking of hydrocarbon stock. This target is reached by use of metal-catching particle, which contains spray-dried mixture of kaolin, magnesium hydrate or oxide and calcium carbonate, at that the spray-dried mixture was ignited at temperature within the range from 816°C up to almost 899°C. The invention is also related to a metal passivation method, which includes: contact of hydrocarbon flow containing metal in the fluid-catalytic cracking plant with mixture of suspended cracking catalyst and granulate metal trap; at that the metal trap contains spray-dried mixture of kaolin, magnesium hydrate or oxide, and calcium carbonate, at that the spray-dried mixture subjected to ignition at temperature within the range from 816°C up to almost 899°C and the ignited metal trap contains magnesium oxide in quantity of at least 10 wt %.

EFFECT: invention is related to suppression methods of harmful effects of metals on catalytic cracking of hydrocarbon stock.

20 cl, 1 dwg, 4 ex