Thermopolycondensation of Vacuum-Disposed Cracking Residue for Obtaining Petroleum Pitch Suitable for Production of Carbon Materials

Abstract

The article emphasizes the relevance and expediency of developments for the creation of petroleum pitch and the introduction of thermal polycondensation processes in Russia. The possibility of producing petroleum pitches from vacuum-distilled cracking residue is considered. It is shown that to obtain a petroleum pitch suitable for carbon materials, it is necessary to carry out the process of thermal polycondensation in two stages: at elevated pressure, and then at reduced pressure. The physicochemical properties of the obtained petroleum pitches and intermediate products of the process have been investigated. The possibility of obtaining petroleum pitches with a yield of 35-38% wt. from the vacuum distilled cracking residue at the thermal polycondensation unit.