Patent ID: 8814989
Filing Date: 2014-08-26
Classification: B01D,Y02A,Y02C

Abstract:
1. A process for removing carbon dioxide (CO 2 ) by means of an absorption medium from a cycle gas system, wherein the CO 2 occurs within a process in which, in the gas phase, ethylene is oxidized by oxygen (O 2 ) to ethylene oxide (EO) in the presence of a catalyst, in which, as by product, CO 2 is generated, which comprises absorbing CO 2 from a cycle gas stream with the absorption medium comprising an aqueous solution of one or more amines, bringing the cycle gas stream into intimate contact with water to which no mineral acid and no higher glycol was added for further purification of the cycle gas stream obtained downstream of the CO 2 absorption step, and recirculating the water back to the same purification step (cycle procedure), wherein some of the water is ejected and replaced by fresh water.