Controlling the Ratio of the Reactions of Intermolecular Hydrogen Transfer and Cracking on Setups with Fixed and Recycled Catalyst Beds

Abstract

The effect of the main parameters (temperature, pressure, and dilution of the reaction medium with an inert gas) of such catalytic processes as the cracking of vacuum gasoil and the hydrogenless refining and cracking of gasoline fractions on the ratio of the selectivity of the cracking and intermolecular hydrogen-transfer reactions is studied. Control over the ratio of these reactions allows products to be obtained according to the requirements for processing feedstocks. An increase in the time of feedstock–catalyst contact, a reduction in the degree of diluting the reaction mixture with an inert gas, and a rise in pressure result in greater selectivity for hydrogen-transfer reactions. Experiments are performed on setups with fixed and recycled beds of zeolite-containing catalysts. The transformation of feedstocks containing deuterated compounds is investigated.