DEPARAFFINATION OF MIDDLE PETROLEUM DISTILLATES IN THE PRESENCE OF MODIFIED ZEOLITE-BASED CATALYSTS

Abstract

Middle distillates are a set of fractions obtained from the distillation process that have intermediate boiling points between the feedstock and the final residue. During distillation, the mixture is heated, the lower boiling point compounds vaporise first and the higher boiling point compounds remain in the liquid phase. This fractionation process is widely used in industries such as petrochemical refining where crude oil is separated into various components such as petrol, diesel and paraffin. Middle distillates typically include a number of paraffinic hydrocarbons. The main components are saturated straight-chain and branched-chain paraffins and ring-shaped cycloparaffins. Using depressor additives and deparaffinisation the low-temperature properties of
middle distillate fractions are enhanced. Catalytic deparaffinisation is the most efficient. Classical hydrocarbon fraction recycling processes are not economically profitable for small refineries. Classical hydrocarbon fraction recycling processes are not economically profitable for small refineries. The results of the studies carried out on the obtained catalytic system show that the
performance of the physicochemical data of the catalytically treated diesel is similar to the processes realised in industry.