Превращение комбинированного сырья на цеолитсодержащих катализаторах

Abstract

The article discusses the ways of rational use of hydrocarbon raw materials in order to obtain isoparaffin and aromatic hydrocarbons. The possibilities of joint processing of the 75-100°C fraction have been studied from gas condensate and propane-butane fraction (PBF) in an anhydrous environment and in the presence of a modified zeolite-containing catalyst. The regularities of the yield of aromatic and isoparaffinic hydrocarbons of the anhydrous process of catalytic conversion of combined hydrocarbon raw materials on a zeolite-containing Pt/Beta catalyst modified by 0.5% wt have been established platinum. So, when converting a fraction of 75-100°C. With a temperature range of 300-350°C, the content of isoparaffins in liquid products increases by more than 20% by weight. A further increase in temperature is accompanied to a greater extent by the formation of aromatic hydrocarbons. The total content of benzene, toluene, xylenes is about 20% by weight. Similar trends are observed when testing the propane-butane fraction. The greatest increase in isoparaffin hydrocarbons is also observed at a temperature of 300°C. Their content in liquid and gaseous products increases by an average of 10%. The main share in this process is accounted for by iso-butane. Accordingly, an increase in the reaction temperature by 100°C increases the formation of benzene and toluene by 11% by weight. More significant results were obtained during the joint transformation of the 75-100°C fraction and the propane-butane fraction. At a reaction temperature of 300°C, a high content of iso-butane is observed in gaseous products, which allows them to be involved in petrochemical processes. The content of isoparaffins in liquid products increases by 50% by weight, which makes them valuable as a high-octane component of motor fuels. Favorable temperatures for the production of aromatic hydrocarbons are 400°C and above.