Exergy Rate Profile of Multicomponent Distillation System

Authors

  • Kehinde Adewale Adesina Industrial Engineering Eastern Mediterranean University, Famagusta, Via 10 Mersin, TRNC, Turkey
  • C. Abiodun Popoola

DOI:

https://doi.org/10.3991/ijes.v4i2.5710

Abstract


Exergy rate profiles, exergetic efficiency and irreversibility were used to examine the driving forces in multicomponent distillation system with the view to identifying feasible and efficient operating parameters. The mixture used comprised of 5% propane, 15% iso-butane, 25% nbutane, 20% iso-pentane and 35% n-pentane. Operating variables were feed temperature (-30 oC and -80 oC), pressure (800 kPa and 1200 kPa), and reflux-ratio (2 and 6). Stage-by-stage system exergy analysis was estimated. Column profiles of base case -30 oC, -80 oC, -30 oC-reflus ratio 6, -80 oC reflux ratio 6 and base case reflux ratio 6 did not crossed thus are thermodynamically feasible. Base case -30 oC-reflux ratio 2, -80 oC-reflux ratio 2, and base case-reflux ratio 2 were crossed and constricted and are infeasible. Base case results gave efficiency of 81.7% at depropanizer and 65.2% at debutanizer. Base cases sensitivity results with -30 oC, -80 oC and reflux ratio 6, efficiency range 57.40 – 70% and 65.20% - 54.90% for depropanizer and debutanizer respectively. Spitted cases gave 81.7% and 62.20% with more scatter profiles. Splitted feed base case -30 oC design gave the lowest overall system exergy loss rate of 1.12E+6 and efficiency of 95.70%. Design feasible parameters, system efficiency and irreversibility which form basis

Author Biography

Kehinde Adewale Adesina, Industrial Engineering Eastern Mediterranean University, Famagusta, Via 10 Mersin, TRNC, Turkey

Industrial Engineering

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Published

2016-07-05

How to Cite

Adesina, K. A., & Popoola, C. A. (2016). Exergy Rate Profile of Multicomponent Distillation System. International Journal of Recent Contributions from Engineering, Science & IT (iJES), 4(2), pp. 29–37. https://doi.org/10.3991/ijes.v4i2.5710

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Papers