May I ask whether the aromatic extraction of C6-8 aromatics from chemical cracking gasoline in the refining and chemical integration process can be handled together with the aromatic extraction materials from oil refining reforming?
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As the title says. Or two extractions, sharing the solvent recovery?
What solvent are you using for this extraction?
Technically, it’s possible to do so; chemical cracking gasoline is also subjected to hydrogenation treatment. However, it doesn’t seem economical to handle them together, as the residue oil from chemical cracking gasoline consists mainly of naphthenic compounds, which are excellent feedstocks for reforming but not suitable for producing ethylene. On the other hand, the residue oil from reformation processes contains mainly alkanes, which cannot be used as feedstocks for reforming but can be used to produce ethylene. Shared solvent recovery should be possible
Suggestion 3#: Ethylene hydrogenation C6-C8 (styrene has been extracted earlier) is not suitable for being mixed with reforming products (C6-C7 or C8) and then extracted together; otherwise, the residue oil will be a mixture of naphthenes and alkanes. It doesn’t work anymore. If extracted separately, the ethylene residue oil is sent for reforming, and the reforming residue oil is sent for ethylene production, thus making full use of each material. It does make sense.
Domestic integrated refining and chemical projects include those that combine ethylene production with oil refining to have one set for aromatic extraction