Composition of Thermal Cracking Products of SARA Fractions from Heavy Methane Crude Oil
G. S. PEVNEVA, N. G. VORONETSKAYA
Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
Keywords: cracking, saturated and aromatic hydrocarbons, resins, asphaltenes, composition
Pages: 226-232
Abstract
Changes in the composition of SARA fractions (Saturated, Aromatics, Resins, Asphaltenes) of methane crude oil from the Zyuzeevo oilfield (the Republic of Tatarstan) during thermal cracking are investigated. Cracking was carried out at 450 °C for 120 min in the isothermal mode. The data on mass balance, the composition of liquid and gaseous products of cracking were obtained. It is shown that the composition of hydrocarbons in liquid products and the yield of side gaseous and solid products depend on the composition of initial SARA fractions. Thus, the yield of solids is maximal from asphaltene fraction cracking, while the largest amount of gases are formed from resin fraction cracking. It has been established that cracking of SARA fractions involves the formation of new components that were absent in the initial feedstock. It is shown that the structural features of initial resin and asphaltene molecules affect the content and composition of their cracking products.
DOI: 10.15372/CSD2023460
EDN: RTTSUX
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