Analysis and Processing of Heavy Pyrolysis Tar
M. A. LEBEDEVA1,2, V. I. MASHUKOV2 and A. K. GOLOVKO1
1 Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 4, Tomsk 634021 (Russia)
2 Scientific Centre of SIBUR for Chemical Technologies NIOST Ltd., Kuzovlevskiy Trakt 2, Build. 270, Tomsk 634067 (Russia),
E-mail: lma-niost@mail.ru
Keywords: heavy pyrolysis tar, chromatographic analysis, chemical composition, processing technology, radical polymerization, dark petroleum polymer resin
Pages: 581–585
Abstract
Chemical composition of the light fraction (Тboil ≤ 300 °C) of heavy pyrolysis tar (HPT) was studied; more than 40 components were identified. The content and nature of the still bottoms of HPT were determined. It was established that the method of HPT processing is determined mainly by the concentrations of naphthalene, unsaturated compounds and still bottoms. The processes of HPT polymerization with the application of radical type initiators dicumyl peroxide and di-tert-butyl peroxide (DTBP) were studied. New grades of petroleum polymer resins (PPR) with high softening temperature were developed; they can be used in rubber-processing industry. A method of HPT processing using the still bottoms of styrene rectification and DTBP, followed by evaporation of volatile components, was proposed for obtaining PPR with required properties and the yield up to 68 %.
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