Gas-Liquid Reactions in Packed Columns: Dynamic Modeling of a Pilot Plant

摘要

A general mathematical model including dynamic effects has been developed for the reaction zone of an absorption column with random packing. The model, based upon film theory, axial dispersion, and rate enhancement, has been tested for the case of CO_2 absorption into carbonate solution on a pilot plant (stainless steel construction, column diameter: 0.08 m, height of packed zone: 1,3 m, random packing: 15 mm ceramic spheres). The dynamic behavior of the entire plant and of the packed zone in particular has been determined in RTD) measurements on the pilot plant. The final validation of the model experiments with absorption of CO_2 into water and into carbonate solution shows a very good concordance in steady slate results as well as in dynamic behavior.