PYROLYSIS OF VACUUM RESIDUE AND ITS RESINS SUBFRACTIONS BY PY-GC/MS

Abstract

Abstract: The Changqing vacuum residue and resin subfractions were studied by using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) to test the effect of reaction temperature and heating rate on VR pyrolysis. The results showed that as the pyrolysis temperature increased, the yields of light olefins in the pyrolysis product rose gradually, whereas the yields of gasoline and diesel fractions first increased and then decreased with a maximum value at 700oC; when the heating rate is 1℃/ms, the yield of gasoline and diesel reached maximum. The pyrolysis of resins subfractions showed that the higher the aromaticity and the higher the condensation degree, the worse the pyrolysis ability of the resins.

Key words: residual oil, resins, pyrolysis, structural composition, Py-GC/MS

CLC Number:

References

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