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:
Mar. 23, 2021
Filed:
Jun. 27, 2019
Applicant:
Axens, Rueil-Malmaison, FR;
Inventors:
Isabelle Prevost, Rueil-Malmaison, FR;
Jerome Pigourier, Rueil-Malmaison, FR;
Pierre-Yves Martin, Rueil-Malmaison, FR;
Arnaud Cotte, Rueil-Malmaison, FR;
Assignee:
AXENS, Rueil-Malmaison, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 3/14 (2006.01); C07C 7/04 (2006.01); C07C 15/08 (2006.01); B01D 3/32 (2006.01);
U.S. Cl.
CPC ...
C07C 15/08 (2013.01); B01D 3/141 (2013.01); B01D 3/145 (2013.01); C07C 7/04 (2013.01); B01D 3/322 (2013.01);
Abstract
The present invention relates to a process for producing high-purity para-xylene, comprising a single step of separation by adsorption in an SMB, with a subsequent step of separation by distillation in a first three-fraction distillation column producing at least two raffinates and optionally of two isomerization steps, making it possible to improve the overall para-xylene yield of the aromatic loop and to minimize the economic impact.