Patent ID: 9545595
Date: 2017-01-17
CPC Classifications: B01D,C01B,F23J,Y02C,Y02E,Y02P

Claim:
1. A method for the removal of contaminants, including at least benzene, from a carbon dioxide feeding liquid stream, originating from a carbon dioxide feeding gas stream, comprising the steps of: c. pressurizing and heating the carbon dioxide feeding liquid stream; and d. introducing the carbon dioxide feeding liquid stream into a flash column to provide a resulting benzene and NOx lean liquid stream and a carbon dioxide containing gaseous stream; e. pressurizing the resulting liquid stream leaving the flash column in step d; f. separating the liquid stream obtained in step d or e into a carbon dioxide-rich stripper off gas and a carbon dioxide-depleted liquid by means of stripping in a stripper column; and g. feeding a gaseous fraction of the carbon dioxide rich stripper off gas to the bottom of the flash column of step d.