Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-09-09
1994-03-08
Evans, Joseph E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
422201, C07D30110, C07D30304
Patent
active
052929043
ABSTRACT:
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.
REFERENCES:
patent: 3147084 (1964-09-01), Franzen et al.
patent: 4061659 (1977-12-01), Nielsen et al.
patent: 4847393 (1989-07-01), Langley
patent: 4882444 (1989-11-01), Dobson et al.
European Search Report, EP 92 30 8245, Jan. 4, 1993.
Annex of JP 3-233427, 1991, Japan.
Kakimoto Yukihiko
Sawada Masayuki
Behr Omri M.
Evans Joseph E.
McDonald Matthew J.
Nippon Shokubai Co. , Ltd.
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