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:
Jun. 19, 2018
Filed:
Feb. 28, 2017
Grupo Petrotemex, S.a. DE C.v., San Pedro Garza Garcia, MX;
José Gabriel Quintero Barajas, Altamira, MX;
Pamela Shantal Ramírez Sosa, Altamira, MX;
Alfredo Escobar López, Altamira, MX;
Verona Medina Valencia, Cosoleacaque, MX;
Arturo Bulbarela Croda, Cosoleacaque, MX;
Bertha Morán Delgado, Cosoleacaque, MX;
GRUPO PETROTEMEX, S.A. DE C.V., San Pedro Garza Garcia, MX;
Abstract
A continuous process for oxidizing a di-alkyl substituted aromatic compound with compressed air in a primary bubble column reactor; including removing a portion of the three phase reaction medium to a post-oxidation bubble column unit supplied with compressed air separating the post oxidation reaction medium to an overhead gas and an underflow slurry; collecting overhead gases from the oxidation reactors and the de-gassing unit and conducting the combined overhead gases to a water removal column (WRC); transferring the underflow slurry from the de-gassing unit to a digestion unit to effect further oxidation without addition of air to the digestion unit; removing overhead gases to the water removal column; crystallizing the final oxidation slurry; and filtering the slurry on a rotary pressure filter; wherein a portion of the energy of the off gas from the WRC is employed to drive an air compressor to supply the compressed air for oxidation.