Gas absorption in laminar falling films of pseudoplastic liquids |
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Authors: | H Hikita K Ishimi M Hara T Matsunami |
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Affiliation: | Department of Chemical Engineering, University of Osaka Prefecture, Sakai, Osaka, Japan |
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Abstract: | Gas absorption into laminar falling films of power-law liquids was studied theoretically and experimentally. The convective-diffusion equation was solved by the method of separation of variables and the analytical solution for the average Sherwood number was obtained as a function of the Graetz number and the power-law index of the liquid. Experiments were carried out on the absorption of pure carbon dioxide, hydrogen and helium into aqueous kaolin slurries by using a long wetted-wall column and the average absorption rates were measured as a function of the mass flow rate of the liquid. The experimental results were in good agreement with the theoretical predictions. |
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