Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

OP-III-8resistance is the membrane and the diffusion of the SO 2 molecules through the gas can beneglected. Thus, the parabolic profile in the gas phase can be ignored.In order to validate the applicability of the models, some experimental runs have beencarried out. The process efficiency is about 50% which is close to the efficiency obtained withthe models: 56% with laminar and plug flow models and 45% with a mixing model.ConclusionsA mathematical modelling considering diffusion-controlled mass transport andinstantaneous reaction has been applied to the non-dispersive absorption process using ahollow fibre membrane module. Experimental results show a good correlation with the model,showing that the membrane is the main resistance to the mass transfer as it could be expected.AcknowledgmentsThis research is financially supported by the Spanish Ministry of Science and Technology(Project CONSOLIDER CTM2006-00317).References1. Basu RK, Dutta BK. Kinetics of absorption of sulfur-dioxide in dimethylaniline solution. Can J Chem Eng65 (1): 27 – 35 (1987).2. Bhattacharya S, Dutta BK, Shyamal M, Basu RK. Absorption of sulfur dioxide in aqueous dispersions ofdimethyl aniline. Can J Chem Eng 74 (3): 339 – 346 (1996).3. Gabelman A, Hwang S. Hollow fiber membrane contactors. J Membrane Sci 159 (1-2): 61 – 106 (1999).4. Karoor S, Sirkar K. Gas Absorption Studies in Microporous Hollow Fiber Membrane Modules. Ind EngChem Res 32 (4): 674 – 684 (1993).5. Luis P, Ortiz I, Aldaco R, Garea A, Irabien A. Recovery of sulfur dioxide using non-dispersive absorption.Int J Chem React Eng 5: art. no. A52 (2007).6. Yan S, Fang M, Zhang W, Wang S, Xu Z, Luo Z, Cen K. Experimental study on the separation of CO 2 fromflue gas using hollow fiber membrane contactors without wetting. Fuel Process Technol 88 (5): 501 – 511(2007).7. Qi Z, Cussler EL. Microporous hollow fibers for gas absorption II. Mass transfer across the membrane. JMembrane Sci 23 (3): 333 – 345 (1985).106