Title:
ETHYLENE OXIDE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/170915
Kind Code:
A1
Abstract:
According to the present invention, a means for preventing the occurrence of corrosion on the inner tube side of a heat exchanger in an ethylene oxide production process to enable the continuous production of ethylene oxide for a long period can be provided.
The present invention relates to an ethylene oxide production method comprising: supplying a raw material gas containing ethylene, molecular oxygen and a chlorine compound to an ethylene oxidation reactor; performing the catalytic vapor-phase oxidation of ethylene with molecular oxygen in the raw material gas in the presence of a silver catalyst in the ethylene oxidation reactor to generate a gas containing ethylene oxide, water and the chlorine compound; and cooling the gas of interest, which contains water and the chlorine compound, with a heat exchanger. In the method, the gas of interest, which contains water to be cooled and the chlorine compound, is cooled in the heat exchanger at a gas flow rate of 7 m/s or more as measured on the heat exchanger inner tube side.
Inventors:
IGUCHI SHINGO (JP)
SUZUKI HIDETO (JP)
SUZUKI HIDETO (JP)
Application Number:
PCT/JP2017/013372
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
International Classes:
C07D301/10; C07D303/04
Domestic Patent References:
| WO2015152298A1 | 2015-10-08 | |||
| WO2014157699A1 | 2014-10-02 |
Foreign References:
| JP2013209328A | 2013-10-10 | |||
| JP2001220362A | 2001-08-14 | |||
| GB531256A | ||||
| JP2010516657A | 2010-05-20 |
Other References:
JAPAN SOCIETY FOR CHEMICAL ENGINEERING: "Chapter 9: Echiren'okishido - echirengurikōnore [Ethylene oxide - Ethylene glycol]", KAGAKU PROCESS -KISO KARA GIJUTSU KAIHATSU MADE, 1998, pages 121 - 128, XP009515921, ISBN: 4-8079-0473-6
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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