公开(公告)号：US10668463B2

公开(公告)日：2020-06-02

申请号：US15962318

申请日：2018-04-25

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chuansheng Bai ,  Paul Podsiadlo ,  Stephen J. McCarthy ,  Kiara M Benitez

IPC: B01J38/68 ,  B01J29/48 ,  B01J38/02 ,  C10G45/64 ,  B01J29/90 ,  B01J37/20 ,  C10G45/58 ,  B01J37/02 ,  B01J31/04

Abstract: Methods for regenerating and/or rejuvenating catalysts, particularly dewaxing catalysts, as well as methods for performing dewaxing of diesel or distillate boiling range feeds with the regenerated and/or rejuvenated catalyst are provided herein. The regeneration and/or rejuvenation methods can include calcining spent catalyst followed by contacting the calcined catalyst with a solution comprising a complexing agent, which can restore hydrotreatment (HDT) activity and dewaxing activity of the spent catalyst such that it may be reused during hydroprocessing.