Applied Technologies and Innovations
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| Volume | 2 |
| Issue | 2 |
| Online publication date | 2010-08-10 |
| Title | The axial mixing influence on the number stages of countercurrent absorbers in absorbing NH3-CO2-H2O mixture in NaCl-H2O system |
| Author | Milovan Jotanovic, Vladan Micic, Goran Tadic |
| Abstract | This paper investigates the influence of axial or longitudinal mixing of stages on the number stages in a countercurrent absorber in absorbing vapour-gas mixture of NH3-CO2-H2O in the multicomponent system NaCl-H2O. The number stages in ideal mixing of phases NT and the number of stages which involves axial mixing ND were determined. The authors of this paper conclude that the influence of axial mixing does not affect the number stages in the countercurrent absorber. Otherwise, absorption in this concrete system is practically present in the process of soda ash production. |
| Citation | |
| References | Cairns. E., Prausnitz. J., 1960. “Longitudinal mixing in packed beds,” Chemical Engineering Science, Vol.12, Issue 1, pp.20-34 Kongto, A., Limtrakul, S. et al., 2005. “Mathematical modeling and simulation for gas-liquid reactors,” Computers and chemical engineering, Vol.29 (11), pp.2461-2473 Levenspiel, О., 1962. Chemical reaction engineering, John Wiley and Sons, New York Levenspiel, O., Smith, W., 1957. “Notes on the diffusion-type model for longitudinal mixing of fluids in flow,” Chemical Engineering Science, Vol.6, pp.227-33 Mecklenburgh, J., Hartland, S., 1983. The theory of bаckmixing, John Wiley and Sons, New York Mhaskar, R., 1974. “Effect of backmixing on the performance of bubble column reactors,” Chemical Engineering Science, Vol.29 (4), pp.897-905 Miyauchi. T., Vermeulen. T., 1963. “Longitudinal dispersion in two-phase continous flow operations,” Industrial and Engineering Chemistry Fundamentals, Vol.2, pp.113–126 Ramm, V., 1966. Absorbtion of gases (Absorbisiya gazov), Chemistry (Khimiya), Moscow Schubert, S., Grunewald, M., Agar, D., 2001. “Enhancement of carbon dioxide absorption into aqueous methyldiethanolamine using immobilised activators,” Chemical Engineering Science, Vol.56 (21), pp.6211-6216 Schultes, M., 2003. “Raschig super-ring: A new fourth generation packing offers new advantages,” Chemical Engineering Research and design, Vol.81 (1), pp.48-57 Wiemann, D., Mewes, D., 2005a. “Calculation of flow fields in two and three-phase bubble columns considering mass transfer,” Chemical Engineering Science, Vol.60, (22), pp.6085-6093 Wiemann. D., Mewes. D., 2005b. “Prediction of backmixing and mass transfer in bubble columns using a multifluid model,” Ind. Eng. Chem. Res., Vol.44 (14), pp.4959-4967 Zaiisev, I., Tkach, G., Stoev, N., 1986. Soda production (Proizvodstvo sodi), Chemistry (Khimia), Moscow |
| Keywords | Soda ash production, absorption, NaCl-H2O system, NH3-CO2-H2O system, absorber with countercurrent grating stages |
| DOI | http://dx.doi.org/10.15208/ati.2010.9 |
| Pages | 1-8 |
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