tetralin) have the potential to decrease the asphaltenes content of oil, improve its API gravity, the viscosity, and enhance the distillable
proportions of the heavy oil (Vallejos, et al.
Cokers are normally run under severe conditions ([is greater than] 500 [degrees] C) to completely convert the residuum (524 [degree] C+) to gases, distillable liquids (C-5 to 524 [degree] C) and a carbonaceous solid (toluene insoluble), called coke.
If this happens, the radical in the aliphatic group would be very reactive under process conditions and would rapidly undergo a series of reactions to form hydrocarbon gases and distillable liquids.
The proposed explanation is that the aromatic radical reacts with hydrogen to forte a cyclohexadienyl radical intermediate, thereby providing a pathway by which the large condensed aromatic centers can decompose to form gases and distillable illable liquids.