02Mar 2018

SIMULATION OF A THERMALLY-COUPLED COLUMN FOR SEPARATION OF ALCOHOLS.

  • Department of Chemical Engineering, Federal University of Technology Minna.
Crossref Cited-by Linking logo
  • Abstract
  • Keywords
  • References
  • Cite This Article as
  • Corresponding Author

The design of an energy saving distillation plant has been carried out. The procedure included all the design of the conventional distillation plant with a deviation from a single column to three-thermally coupled distillation columns. The coupled column was designed by configuring a linkage of three columns together with the overhead and bottoms stream without heat exchangers. The first column was made the pre-fractionator which evaporates the lightest component; the second column separates both the lightest and middle components, while a last column was connected in the bottom where both the middle and the bottom components were separated. The feed included a 100kgmol/hr and the liquid fraction was one. The relative volatilities of each distillation are 7.5, 5.0, 2.1 and 1.9 for a feed composition of Methanol, Ethanol, n-propanol and i-propanol respectively. Each component has a feed composition of 25%. The recoveries were 66%, 34%, 50% and 50% respectively. Conceivable mixes of parallel blends were made and the base energy was calculated for each. The underwood technique was utilized to get least reflux proportion.

  1. Aspen Plus, ?Process modeling environment for conceptual design, optimization, and performance,? 2015. [Online]. Available: https://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiflIDgl. [Accessed 27 December 2015].
  2. Caballero J.A., Grossman I.E. Design of distillation sequences: from conventional to fully thermally coupled distillation systems. Computers chem.Engng.28, 2307-2329 (2004)
  3. Errico M; Tola G.; Rong B.G, Demurtas D.; Turunen I. Energy saving and capital cost evaluation in distillation column sequences with a divided wall column. Chemical Engineering research and design (2009a)
  4. Errico M; Tola G.; Rong B.G, Demurtas D.; Turunen I. A method for systematic synthesis of multicomponent distillation with less than N-1 columns. Computers chem.Engng.48, 907-920 (2009b)
  5. Errico M; Tola G.; Rong B.G, Demurtas D.; Turunen I. Energy saving and capital cost evaluation in distillation column sequences with a divided wall column. Chemical Engineering research and design (2009)
  6. Gil, I. D. Uyaz?n, A. M., Aguilar, J. L.? Rodr?guez, G. and Caicedo, L. A.? ?Separation Of Ethanol And Water By Extractive Distillation With Salt And Solvent As Entrainer: Process Simulation,? Brazilian Journal of Chemical Engineering, vol. 25, no. 1, pp. 207 - 215, 2008
  7. Gil, I. D. Botı?a, D. C. , Ortiz, P. and Sa?nchez, O. F.? ?Extractive Distillation of Acetone/Methanol Mixture Using Water as Entrainer,? Ind. Eng. Chem. Res., vol. Vol. 48, no. 10, pp. 4858-4865, 2009.
  8. Gil, I. D. G?mez, J. M. and Rodr?guez, G.? ?Control of an extractive distillation process to dehydrate ethanol using glycerol as entrainer,? Computers and Chemical Engineering, no. 39, p. 129? 142, 2012.
  9. I.V. Minimum energy requirements in complex distillation arrangements (2001)
  10. Iwakabe K.;Nakaiwa M.; Huang K.; Nakanishi T., Rosjorde A.;Ohmori T.; Endo A.; Yamamoto T. Energy saving in multicomponent separation using an internally heat-integrated distillation column (HIDic) Applied Thermal Engineering 26, 1362-1368 (2006)
  11. Ling, H. ?Temperature Control of the BTX Divided-Wall Column,? Ind. Eng. Chem. Res., vol. 49, no. 1, p. 189?203, 2010)
  12. Luyben, W. L. Distillation Design and Control Using Aspen Simulation, New York: John Wiley & Sons, 2006.
  13. Perry R.H.; Green D.W.; Perry?s chemical Engineers?Handbook. McGraw-Hill (1997)
  14. Resertarits M.R; Lockett M.J; Distillationcom, ?Distillation,? 1 July 2009. [Online]. Available: http://www.howstuffworks.com/distillation-info.htm. [Accessed 28 December 2015].
  15. Tham, M. T. ?Distillation: An Introduction,? October 1997. [Online]. Available: http://aussiedistiller.com.au/books/Chocaholic/Introduction%20to%20Distillation.pdf. [Accessed 28 December 2015].

[Olugbenga. A. G. (2018); SIMULATION OF A THERMALLY-COUPLED COLUMN FOR SEPARATION OF ALCOHOLS. Int. J. of Adv. Res. 6 (Mar). 266-271] (ISSN 2320-5407). www.journalijar.com

none
Federal University of Technology Minna, Niger State

DOI:

Article DOI: 10.21474/IJAR01/6674      
DOI URL: http://dx.doi.org/10.21474/IJAR01/6674

Download Full Paper

Download PDF No. of Downloads: 12 | No. of Views: 66