Composition of Oils Cracking Products in High-Sulphur Natural Bitumen under Various Conditions
E. B. KRIVTSOV, N. N. SVIRIDENKO, and A. K. GOLOVKO
Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia
Keywords: natural bitumen, cracking, resins, asphaltenes, sulphur compounds
Pages: 43-48
Abstract
The composition of sulphur compounds of oils in high-sulphur natural bitumen of the Ashalchi deposit (Russia), as well as its thermal cracking products was studied under various conditions. It was demonstrated that depending on thermal treatment conditions gas and coke formation, the composition of the liquid cracking products and sulphur content in them significantly changed. Cracking of bitumen in a reactor autoclave leads to an insignificant decrease in the content of benzothiophene homologs in the composition of oils, the products are enriched with of dibenzothiophene derivatives. Cracking of bitumen in a flow reactor allows decreasing the content of benzothiophene homologs by 37 %, and dibenzothiophene homologs - by 72 rel. % in liquid cracking products.
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