The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2021
Filed:
Jul. 23, 2020
Saudi Arabian Oil Company, Dhahran, SA;
Zhonglin Zhang, Dhahran, SA;
Sohel K Shaikh, Dhahran, SA;
Veera Venkata R Tammana, Dhahran, SA;
Raed H. Abudawoud, Khobar, SA;
Bruce Richard Beadle, Dhahran, SA;
Hisham Tawfiq Bassam, Al Khubar, SA;
Rakan Sulaiman Bilaus, Dammam, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A method for producing para-xylene (PX) includes introducing a Caromatic-containing composition to a xylene rerun column to separate the Caromatic-containing composition into a xylene-containing effluent and a heavy effluent and passing the xylene-containing effluent to a PX processing loop that includes a PX recovery unit operable to separate a PX product from the xylene-containing effluent, a membrane isomerization unit operable to convert a portion of the MX, OX, or both from the xylene-containing effluent to PX, an EB dealkylation unit operable to dealkylate EB from the xylene-containing effluent to produce benzene, toluene, and other Ccompounds, and a membrane separation unit operable to produce a permeate that is PX-rich and a retentate that is PX-lean. The permeate is passed to the PX recovery unit for recovery of PX, which the retentate is bypassed around the PX recovery unit circulated through the xylene processing loop.