公开(公告)号：US20190337912A1

公开(公告)日：2019-11-07

申请号：US16511542

申请日：2019-07-15

Applicant: Scientific Design Company, Inc.

Inventor： Shaun McGovern ,  Mansoor Husain ,  John Sullivan

IPC: C07D301/10 ,  C07D301/32 ,  B01J8/06 ,  C07C7/12

Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.

公开(公告)号：US10351542B2

公开(公告)日：2019-07-16

申请号：US15672945

申请日：2017-08-09

Applicant: Scientific Design Company, Inc.

Inventor： Shaun McGovern ,  Mansoor Husain ,  John Sullivan

IPC: C07D301/10 ,  B01J8/06 ,  C07C7/12 ,  C07D301/32

Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.

公开(公告)号：US20180044309A1

公开(公告)日：2018-02-15

申请号：US15672945

申请日：2017-08-09

Applicant: Scientific Design Company, Inc.

Inventor： Shaun McGovern ,  Mansoor Husain ,  John Sullivan

IPC: C07D301/10 ,  C07D301/32 ,  B01J8/06 ,  C07C7/12

CPC classification number: C07D301/10 ,  B01D2259/402 ,  B01J8/06 ,  C07C7/12 ,  C07D301/32

Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.