Invention Grant
- Patent Title: Three stage catalytic process for pyrolysis oil upgrading to xylenes
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Application No.: US17364990Application Date: 2021-07-01
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Publication No.: US11377400B1Publication Date: 2022-07-05
- Inventor: Miao Sun , Sohel K Shaikh , Ibrahim A. Abba , Zhonglin Zhang
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Dinsmore & Shohl, LLP
- Main IPC: C07C4/06
- IPC: C07C4/06 ; B01J8/04 ; C07C2/76

Abstract:
A method for upgrading pyrolysis oil includes contacting a pyrolysis oil feed with hydrogen in the presence of a mixed metal oxide catalyst in a slurry reactor to produce an intermediate stream comprising light aromatic compounds comprising mono-aromatic compounds, di-aromatic compounds, or both, passing the intermediate stream to a hydrocracking reactor, contacting the intermediate stream with hydrogen in the presence of a hydrocracking catalyst in a hydrocracking reactor to produce a hydrocracking effluent comprising aromatic compounds having six to nine carbon atoms, passing the hydrocracking effluent to a transalkylation reactor, and contacting the hydrocracking effluent with hydrogen in the presence of a transalkylation catalyst in the transalkylation reactor to produce a transalkylation effluent comprising xylenes.
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