Abstract
The liquid-phase cracking is inevitable in the pyrolysis of heavy oil because of the high boiling point of residues. To enhance the gas-phase cracking of residues, the raction temperature and heating rate processing scheme was performed in a Py-GC/MS apparatus. The results showed that the yields of gasoline and diesel fractions reached the maximum at 750°C and 2000°C/s. Thus, to reduce coking amount and raise liquid yield in industrial thermal processing of vacuum residue, the reaction temperature and heating rate should be enhanced.
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