A computer aided tool for heavy oil thermal cracking process simulation

摘要

This study proposes a dual plug flow reactor representation for the light pyrolysis of petroleum distillation residues in coil-type reactors. It consists of two parallel plug flows: one vapor and the other liquid, traveling at different speeds in a coil. Reaction is assumed to be the rate controlling process, with equilibrium between the phases. A heuristic lumping approach supported by pilot plant data is used and the pseudokinetic scheme derived presents a certain feed independence within the range of stocks available for the study. An industrial case study (delayed coking) is explored to provide insight into the problem of reconciling the kinetics of pyrolysis and carbonization for the upgrade of distillation residues.