Ethylene glycol process

Details Ethylene glycol process Ethylene glycol process

1996-11-26

1998-06-09

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568858, C07C 2700

Patent

active

057636915

ABSTRACT:
The present invention relates to a process for producing ethylene glycol from ethylene oxide wherein ethylene oxide in a gas resulting from oxidation of ethylene is absorbed in a specific absorbing solution, is allowed to react with carbon dioxide, converted into ethylene carbonate, and then subjected to hydrolysis to produce ethylene glycol.
According to the present invention, a large energy consuming step such as stripping of ethylene oxide and separation of excess amounts of water during the ethylene glycol production becomes unnecessary and the process can be greatly simplified by combining the ethylene oxide absorption step and the carbonation step.

REFERENCES:
patent: 4160116 (1979-07-01), Mieno et al.
patent: 4233221 (1980-11-01), Raines et al.
patent: 4508927 (1985-04-01), Bhise et al.
Patent Absracts of Japan, 9(197) (C-128), Oct. 6, 1982 (abstract of JP 57-106631).
Patent Abstract of Japan, 8(98) (C-221), May 9, 1984 (abstract of JP 59-013741).

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