Pyrolysis gasoline or Pygas is a naphtha-range product with high aromatics content.[1] It is a by-product of high temperature naphtha cracking during ethylene and propylene production. Also, it is a high octane number mixture that contains aromatics, olefins, and paraffins ranging from C5s to C12s. The mixture has a CAS Number: 68477-58-7. PyGas has high potential for use as a gasoline blending mixture and/or as a source of aromatics. Currently, PyGas is generally used as a gasoline blending mixture due to its high octane number.[2] Depending on the feedstock used to produce the olefins, steam cracking can produce a benzene-rich liquid by-product called pyrolysis gasoline. Pyrolysis gasoline can be blended with other hydrocarbons as a gasoline additive, or distilled (in BTX process) to separate it into its components, including benzene.
^PYGAS (Pyrolysis Gasoline)
^Ali, Javed (March 24, 2012). "The hydrogenation of pyrolysis gasoline (PyGas) over nickel and palladium catalysts" – via theses.gla.ac.uk.
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