RESEARCH OF CATALYTIC PROCESSING OF LIGHT PYROLYSIS RESIN – BY-PRODUCT OF ETHYLENE PRODUCTION

The quantitative and qualitative composition of the light pyrolysis resin was preliminarily studied on an Agilent Technologies 7820A gas chromatograph, and the amount of benzene and its mono-, di-, and trialkyl derivatives was determined. By catalytic and thermal treatment, the mass fraction of benzene in light pyrolysis resin was increased from 37.94 to 47.38%. The benzene-toluene fraction was separated by rectification and the presence of petroleum-polymer resin in the residue was investigated. Unlike traditional methods, the catalyst is not ready for the process, it is synthesized directly based on the system's components- alkyl benzene derivatives during the process. At normal atmospheric pressure, at low temperatures and for a short period, a light pyrolysis resin was processed with a cheaper catalyst. Thus, less capital, less energy consumption, and less metal content in the process reduce the cost of benzene and toluene. At the same time, Al complex catalyst stimulated oligomerization and polymerization processes in the system, causing the formation of petroleum-polymer resin in the residue. In this way, the mass percentage of valuable components (benzene and toluene) was increased and the residue was enriched with petroleum-polymer resin