Advanced development: cracking catalysts and additives to them

Abstract

The paper is devoted to collaboration between IHP SB RAS and JSC
«Gazprom Neft–Omsk Refinery» in designing of new cracking catalysts and additives to them. The catalysts were designed to increase the production of C3-C4 olefins, to reduce the content of sulfur compounds in the gasoline-product, and to ensure the afterburning of CO during the catalyst regeneration. The new bizeolite cracking catalysts provide the yield of C3-C4 olefins of at least 30 wt.% and allow a wide variation of compositions and yields of desired products. The addition of mixed oxides or modified zeolites Y and/or ZSM-5 to the cracking catalysts can reduce the content of sulfur compounds in gasoline by 35 % (compared with an equilibrium catalyst). For efficient afterburning of CO, an additive based on manganese oxide was proposed. A pilot batch of the additive was produced and industrially tested at JSC «Gazprom Neft–Omsk Refinery». It was shown that to provide the residual content of CO below 20 ppm, this additive is required in amount by 20 % higher than a platinum-containing additive. Developed catalysts and additives to them can be produced at JSC «Gazprom Neft-Omsk Refinery».