Research Triangle Institute

Sinvent As

Ntnu Technology Transfer As

Finn Andrew Tobiesen

Thor Mejdell

Karl Anders Hoff

Hallvard F Svendsen

Vijay Gupta

Shaojun James Zhou

Paul David Mobley

Andreas Grimstvedt

Jak Tanthana

Aravind V Rayer Rabindran

Olav Juliussen

Geir Haugen

A method with corresponding systems for reducing emission of amines to the atmosphere. The method includes a a) introducing a gas containing COinto 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 COand forming a reduced COcontent gas having a baseline COcontent; and c) washing the reduced COcontent gas in a wash column with a wash solution comprising carbonic acid formed by addition of gaseous COinto the wash solution. In this method, the washing removes the amines from the reduced COcontent gas and produces a reduced amine content gas exiting from the wash column.

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

The present invention relates to a method for capturing COfrom exhaust gas in an absorber (A), wherein the COcontaining gas is passed through an aqueous absorbent slurry wherein said aqueous absorbent slurry comprises an inorganic alkali carbonate, bicarbonate and at least one of an absorption promoter and a catalyst, and wherein the COis converted to solids by precipitation in the absorber, said slurry having the precipitated solids is conveyed to a separating device (F), in which the solids are separated off, essentially all of at least one of the absorption promoter and catalyst is recycled together with the remaining aqueous phase to the absorber.

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The invention relates to a new method for removing and recovering of acid gases from a gaseous mixture in an absorption plant by adding an organic acid to a stream of the rich absorbent in the desorber in order to release acid gas by shifting the acid gas equilibrium towards the gas side, and the organic acid is subsequently separated from the absorbent. With this method, the energy consumption of the process is substantially reduced. The invention also relates to an apparatus for performing this method.

Method and apparatus for energy reduction in acid gas capture

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Trondheim, Norway

Finn Andrew Tobiesen