C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 303/04 (2006.01) B01J 8/06 (2006.01) C07D 301/10 (2006.01)
Patent
CA 2078060
The production of ethylene oxide by the catalytic vapor phase oxidation of ethylene with a molecular oxygen- containing gas is effected in a reactor provided with a preheating zone, a reaction zone, a cooling zone, a partition plate separating the first two portions from the third portion, and a multiplicity of reaction tubes piercing the two separated sections by a method which comprises supplying hot water to the cooling zone of the reactor, forwarding zone of the hot water discharged from the cooling zone to a gas-liquid separation tank, circulating the remainer of the hot water in conjunction with the cooling hot water to the cooling zone, supplying the hot water separated in the gas-liquid separation tank to the reaction zone to remove the heat of the oxidation reaction, and circulating the hot water extracted in the form of a gas- liquid mixed phase to the gas-liquid separation tank. The method is excellent to prevent isomerization of ethylene oxide to acetaldelyde which is impurity, excels in thermal efficiency and exhibits ideal durability of the partition plate.
Kakimoto Yukihiko
Sawada Masayuki
Nippon Shokubai Co. Ltd.
Sim & Mcburney
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