Aquathermolysis of Heavy Oil Model Compounds
Tetrahydrothiophene and thiophene are taken as models of aliphatic and aromatic sulfides in aquathermolysis reaction of heavy oil respectively. Experimental data indicates C-S bond of sulfide compound are broken down. The results of thermodynamic calculation indicate that transform rates of two reactants arrive at 100% when the ratio of water/tetrahydrothiophene is more than 3 or the ratio of water/thiophene is more than 4 respectively, temperature and pressure and feed ratio have little effects on equilibrium composition simultaneously. High feed-in ratio is propitious to yield when water is insufficient, and the gaseous products improve with increasing temperature and decreasing pressure.
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
C. T. Liu "Aquathermolysis of Heavy Oil Model Compounds", Advanced Materials Research, Vols. 236-238, pp. 732-735, 2011