Abstract
Abstract A practical view of the equilibrium partial pressure of CO 2 over aqueous alkanolamine is presented here to facilitate process design. The entire equilibrium is divided into two parts, namely first equilibrium and final equilibrium. The non-ideality of the amine solutions used in industrial practice could be accounted for by using final equilibrium data available or generated. The same factor can be used to predict the equilibrium partial pressure of CO 2 for a real situation using the ‘first equilibrium concept’. The expressions developed are very simple and can be handled easily on a programmable calculator. The method is illustrated with the help of published data.
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