Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1977-02-14
1978-07-18
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423229, B01D 5334
Patent
active
041016335
ABSTRACT:
Carbon dioxide containing acidic gases are substantially removed from a normally gaseous mixture by a process comprising contacting the normally gaseous mixture with an aqueous amine solution, wherein the amine consists of at least about 50 mol % of a sterically hindered amino alcohol and at least about 10 mol % of a tertiary amino alcohol, wherein said sterically hindered amino alcohol contains at least one secondary amino group which is part of a ring and is attached to either a secondary or tertiary carbon atom or a primary amino group attached to a tertiary carbon atom. The coaction of the sterically hindered amino alcohol and the tertiary amino alcohol provide an increase in the amount of carbon dioxide containing acidic gases absorbed compared to the use of the sterically hindered amines alone and lowers the heat of reaction.
REFERENCES:
patent: 2139122 (1938-12-01), Hass et al.
patent: 2139124 (1938-12-01), Hass et al.
patent: 3622267 (1971-11-01), Bartholome et al.
patent: 4025322 (1977-05-01), Fisch
Sartori Guido
Savage David W.
Exxon Research & Engineering Co.
Halluin Albert P.
Thomas Earl C.
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