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Performance of Different Inert Gases in Production of Fuel Grade Ethanol by Diffusion Distillation

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Abstract

Performance of sulfur hexafluoride, nitrogen, argon, and helium inert gases was investigated in a view to produce fuel grade ethanol by diffusion distillation. Stefan–Maxwell equations based mathematical model was used for this study. Modeling results were also compared with the own experimental data. Shifting of azeotrope to different extents was observed by using different inert gases as selective filter. As the selected inert gas becomes lighter, narrow concentration range for positive selectivity was found. Sulfur hexafluoride was found to be the most suitable inert gas for ethanol dehydration by diffusion distillation, and quantity \({{S}_{{{\text{az}}}}}({{N{}_{2}} \mathord{\left/ {\vphantom {{N{}_{2}} {{{N}_{1}}}}} \right. \kern-0em} {{{N}_{1}}}})\), which represents the overall performance of any inert gas, was also found to be highest for this gas out of all the inert gases studied. Sulfur hexafluoride gas also allows to work at high vaporization temperature, which facilitates the high transfer efficiency. If light gases are to be used they should be used for high feed concentrations and at low vaporization temperatures to achieve the high degree of separation.

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REFERENCES

  1. Kumar, S., Singh, N., and Prasad, R., Anhydrous ethanol: A renewable source of energy, Renewable Sustainable Energy Rev., 2010, vol. 14, p. 1830.

    Article  CAS  Google Scholar 

  2. Balat, M., Balat, H., and Oz, C., Progress in bioethanol processing, Prog. Energy Combust. Sci., 2008, vol. 34, p. 551.

    Article  CAS  Google Scholar 

  3. Kaminski, W., Marszalek, J. and Ciolkowska, A., Renewable energy source – dehydrated ethanol, Chem. Eng. J., 2008, vol. 135, p. 95.

    Article  CAS  Google Scholar 

  4. Ward, O.P. and Singh, A., Bioethanol technology: Developments and perspectives, Adv. Appl. Microbiol., 2002, vol. 51, p. 53.

    Article  CAS  PubMed  Google Scholar 

  5. Kiss, A.A. and Suszwalak, D.J.-P.C., Enhanced bioethanol dehydration by extractive and azeotropic distillation in dividing-wall columns, Sep. Purif. Technol., 2012, vol. 86, p. 70.

    Article  CAS  Google Scholar 

  6. IS (Indian Standard) 15464−2004: Specification for Anhydrous Alcohol for Automotive Use, 2004.

  7. Abu Al-Rub, F., Distillation in capillary porous media for separation of biomass ethanol–water mixture, PhD Thesis, The University of Iowa, 1994.

  8. Goodling, C.H., and Bahouth, F.J., Membrane-aided distillation of azeotropic solutions, Chem. Eng. Commun., 1985, vol. 35, p. 267.

    Article  Google Scholar 

  9. Abu Al-Rub, F., Akili, J., and Datta, R., Distillation of binary mixtures with capillary porous plates, Sep. Sci. Technol., 1988, vol. 33, p. 10.

    Google Scholar 

  10. Udriot, H., Araque, A., and von Stockar, U., Azeotropic mixtures may be broken by membrane distillation, Chem. Eng. J., 1994, vol. 54, p. 87.

    CAS  Google Scholar 

  11. Fullarton, D. and Schlunder, E.U., Diffusion distillation − A new separation process for azeotropic mixtures Part I: Selectivity and transfer efficiency, Chem. Eng. Process., 1986, vol. 20, p. 255.

    Article  CAS  Google Scholar 

  12. Singh, N. and Prasad, R., Fuel grade ethanol by diffusion distillation: An experimental study, J. Chem. Technol. Biotechnol., 2011, vol. 86, p. 724.

    Article  CAS  Google Scholar 

  13. Singh, N. and Prasad, R., Experimental studies on the effect of inert gases on diffusion distillation of ethanol–water mixtures, J. Chem. Technol. Biotechnol., 2011, vol. 86, p. 1495.

    Article  CAS  Google Scholar 

  14. Krishna, R., Panchal, C.B., Webb, D.R., and Coward, I., An Ackerman-Colburn and Drew type analysis for condensation of multicomponent mixtures, Lett. Heat Mass Transfer, 1976, vol. 3, p. 163.

    Article  CAS  Google Scholar 

  15. Krishna, R. and Panchal, C.B., Condensation of a binary vapor mixture in the presence of an inert gas, Chem. Eng. Sci., 1977, vol. 32, p. 741.

    Article  CAS  Google Scholar 

  16. Webb, D.R. and Sardesai, R.G., Verification of multicomponent mass transfer models for condensation inside a vertical tube, Int. J. Multiphase Flow, 1981, vol. 7, p. 507.

    Article  CAS  Google Scholar 

  17. Taylor, R., and Webb, D.R., Film models for multicomponent mass transfer. Computational methods: The exact solution of the Maxwell–Stefan equations, Comput. Chem. Eng., 1981, vol. 5, p. 61.

    Article  CAS  Google Scholar 

  18. Schlunder, E.U., Azeotropes and pseudo-azeotropes, Fluid Phase Equilib., 1989, vol. 51, p. 71.

    Article  Google Scholar 

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  1. Department of Chemical Engineering, Thapar Institute of Engineering & Technology, Patiala-147004, Punjab, India

    Neetu Singh &  Jai Prakash Kushwaha

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  1. Neetu Singh
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  2. Jai Prakash Kushwaha
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Correspondence to Neetu Singh or Jai Prakash Kushwaha.

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Neetu Singh, Jai Prakash Kushwaha Performance of Different Inert Gases in Production of Fuel Grade Ethanol by Diffusion Distillation. Theor Found Chem Eng 53, 132–138 (2019). https://doi.org/10.1134/S0040579519010147

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