RT: Relative residence time
FIGURE 5 Product distributions at different relative residence times
The feed oil of delayed coking has no olefin molecules, which were intermediate products of thermal cracking reactions. As the reaction proceeded, the contents of paraffin, olefin, naphthene and aromatics with low carbon numbers increased. The model can present the molecular distribution at different residence times and give the reaction path of each molecule in the reaction system according to the reaction rules, which contributes to disclose the changes in the molecular contents between the reactants and products in the reaction system.