Title:
鉄の除去による酢酸収量の改良法
Document Type and Number:
Japanese Patent JP6738330
Kind Code:
B2
Abstract:
In a process for improving a carbonylation process, iron is removed to maintain an effective Space Time Yield (STY) of the rhodium catalyst of at least 80% of the maximum STY. The process comprises carbonylating methanol in a reactor in a reaction medium comprising water, a rhodium catalyst, methyl iodide and a halide salt, separating a portion of the reaction medium in a flash vessel to form a less volatile stream and a vapor product stream comprising acetic acid, recycling a liquid stream to the reactor, wherein the liquid stream comprises a portion of the less volatile stream and wherein the liquid stream comprises iron, and removing a portion of the iron from the liquid stream to maintain an effective STY of the rhodium catalyst of at least 80% of the maximum STY.
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Inventors:
Ryu, You-Fa
Skates, mark o
Skates, mark o
Application Number:
JP2017525926A
Publication Date:
August 12, 2020
Filing Date:
November 13, 2015
Export Citation:
Assignee:
Celanese International Corporation
International Classes:
C07C51/09; C07C53/08
Domestic Patent References:
| JP6040999A | ||||
| JP52082693A | ||||
| JP8067650A | ||||
| JP2264740A | ||||
| JP7002722A | ||||
| JP7025814A | ||||
| JP2007536082A | ||||
| JP63116746A | ||||
| JP2000511100A | ||||
| JP4273843A | ||||
| JP62067033A |
Foreign References:
| US4007130 | ||||
| US4628041 | ||||
| EP0265140A1 | ||||
| WO2012081417A1 | ||||
| US20130102809 |
Attorney, Agent or Firm:
Shinjiro Ono
Osamu Yamamoto
Toru Miyamae
Motoharu Nakanishi
Go Kajita
Osamu Yamamoto
Toru Miyamae
Motoharu Nakanishi
Go Kajita