Transalkylation of Heavy Aromatic Hydrocarbons
A process for producing xylene from C9+ aromatic hydrocarbons comprises contacting a first feedstock comprising C9+ aromatic hydrocarbons with a first catalyst in the presence of 0 wt. % or more of hydrogen under effective vapor phase dealkylation conditions to dealkylate part of the C9+ aromatic hy...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for producing xylene from C9+ aromatic hydrocarbons comprises contacting a first feedstock comprising C9+ aromatic hydrocarbons with a first catalyst in the presence of 0 wt. % or more of hydrogen under effective vapor phase dealkylation conditions to dealkylate part of the C9+ aromatic hydrocarbons and produce a first product comprising benzene, toluene and residual C9+ aromatic hydrocarbons. A second feedstock comprising C9+ aromatic hydrocarbons and benzene and/or toluene is contacted with a second catalyst under effective liquid phase C9+ transalkylation conditions to transalkylate at least part of the C9+ aromatic hydrocarbons and produce a second product comprising xylenes. |
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