Methods and systems for emissions control in solvent-based CO2 capture processes using CO2

A method with corresponding systems for reducing emission of amines to the atmosphere. The method includes a a) introducing a gas containing CO 2 into an absorber; b) flowing the flue gas through an absorber having an absorbent with a water-lean solution having less than 50% water and one or more am...

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Bibliographic Details
Main Authors: Rayer Rabindran, Aravind V., Gupta, Vijay, Mobley, Paul D., Tanthana, Jak, Zhou, Shaojun, Tobiesen, Finn Andrew, Mejdell, Thor, Grimstvedt, Andreas, Haugen, Geir
Language:unknown
Published: 2023
Subjects:
37 INORGANIC
ORGANIC
PHYSICAL
AND ANALYTICAL CHEMISTRY
Carbonic acid
Online Access:http://www.osti.gov/servlets/purl/1924981
https://www.osti.gov/biblio/1924981
Description
Summary:A method with corresponding systems for reducing emission of amines to the atmosphere. The method includes a a) introducing a gas containing CO 2 into an absorber; b) flowing the flue gas through an absorber having an absorbent with a water-lean solution having less than 50% water and one or more amines, with the absorbent capturing the CO 2 and forming a reduced CO 2 content gas having a baseline CO 2 content; and c) washing the reduced CO 2 content gas in a wash column with a wash solution comprising carbonic acid formed by addition of gaseous CO 2 into the wash solution. In this method, the washing removes the amines from the reduced CO 2 content gas and produces a reduced amine content gas exiting from the wash column.

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