Abstract
The high-temperature macrokinetics of the process of thermolysis of low-sulphur catalytic cracking gas oil with the formation of needle coke was studied. The experiments were carried out on a laboratory setup with a quartz microreactor at temperatures of 450-500 °C and a process duration of up to 300 min. It was established that the process is two-stage and its kinetics obeysthe Avrami-Erofeev equation, the rate constant of the process at both stages has a diffusion character. The second stage includes thermal condensation of polycyclic hydrocarbons with the formation of mesophase and needle coke. The results of the study are confirmed by optical microscopy in polarized light, data of electron paramagnetic resonance and electron spectroscopy.
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