On the modelling and simulation of sour gas absorption by aqueous amine solutions

A rigorous rate-based model for reactive sour gas absorption by aqueous amine solutions is presented which governs both the coupling of mass transfer and reaction and specific features of electrolyte species. The acceleration of mass transfer due to reactions in the liquid phase is taken into accoun...

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Bibliographic Details
Published in:Chemical engineering science 2003-08, Vol.58 (16), p.3571-3578
Main Authors: Kucka, Lars, Müller, Ivo, Kenig, Eugeny Y, Górak, Andrzej
Format: Article
Language:English
Subjects:
Absorption, stripping
Amines
Applied sciences
Chemical engineering
Exact sciences and technology
Rate-based model
Reactive absorption
Simulation
Sour gas purification
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Summary:A rigorous rate-based model for reactive sour gas absorption by aqueous amine solutions is presented which governs both the coupling of mass transfer and reaction and specific features of electrolyte species. The acceleration of mass transfer due to reactions in the liquid phase is taken into account rigorously, without application of enhancement factors. The model is implemented into the simulation environment Aspen Custom Modeler and validated by comparison of published pilot plant data with the simulation results. It is shown, that the model possesses a good predictivity for pilot plant scale as well as for industrial scale applications. In addition, the influence of reaction kinetics on the absorber performance is studied.
ISSN:0009-2509
1873-4405
DOI:10.1016/S0009-2509(03)00255-0