Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI

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Computer-based process simulations are today recognized as an essential tool to be applied in chemical process industries. For this paper a mathematical model is needed to describe closer the real physical – chemical processes that take place in a reactor (packed absorption column) used for carbon dioxide absorption in mono-ethanolamine aqueous solution.

The mathematical model was developed for analyzing absorption rate and understanding of micro level interaction of various processes taking place inside de absorption column. The modeling includes transfer processes: mass and heat to study the coupled effect of temperature and concentration on the rate of absorption. The reaction kinetics and the vapor-liquid equilibrium (VLE) are other important parts of the mathematical model. The developed equations include both ordinary differential equations and partial differential equation. The discretization was used to transform partial differential equations in ordinary ones.

The evolutions (in time and space) of the processes parameters (liquid and gaseous flows, composition of the streams, temperatures etc.) were studied for carbon dioxide absorption process.