Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Organic component
Patent
1977-05-25
1978-09-05
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Organic component
423210, 421 34, 568867, B01D 5334
Patent
active
041120540
ABSTRACT:
A process for removing ethylene oxide from a gas composition containing ethylene oxide by intimately contacting the gas composition with an aqueous acidic solution and having a pH less than about 4 and an initial temperature less than about 50.degree. C when the solution comprises the minimum volume required to substantially completely convert the ethylene oxide. The initial pH and temperature of the solution and the initial mole ratio of acid in solution to ethylene oxide being converted is controlled to permit substantially complete conversion of ethylene oxide to products including ethylene glycol and polyethylene glycols while preventing evolution of dissolved ethylene oxide from solution. During reaction, the solution temperature is maintained less than about 70.degree. C to avoid evolution of dissolved ethylene oxide.
REFERENCES:
patent: 2135271 (1938-11-01), Balcar
patent: 2636906 (1953-04-01), Davis
patent: 2899266 (1959-08-01), Gewalt et al.
patent: 3093242 (1963-06-01), Huyck et al.
patent: 3098751 (1963-07-01), Huyck et al.
Feingold Michael
Sparks John
Cook Paul J.
New England Industrial Chemical Co.
Thomas Earl C.
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