The most thermodynamically efficient configuration for adding or removing heat from an intermediate location of an ideal binary distillation column distilling pure products is derived. The optimal policy requires that preconditioning of the feed be part of the overall decision-making process. The optimal configuration can be determined through the use of two parameters, α_IR and α_IC, that are solely functions of feed composition. Simple and readily usable heuristics using these parameters are developed that help instantly identify the most efficient selection among (1) totally vaporizing and returning a side-draw liquid stream from an intermediate location of the distillation column, (2) partially or totally vaporizing a portion of the given saturated liquid feed, (3) partially or totally condensing a portion of the given saturated vapor feed, and (4) totally condensing and returning a side-draw vapor stream from an intermediate location of the distillation column.

Literature Cited

Agrawal, R., and Z. T. Fidkowski, “Improved Direct and Indirect System of Columns for Ternary Distillation,” AZChE J., 44, 823 (1998).
Agrawal, R., and Z. T. Fidkowski, “On the Use of Intermediate Reboilers in the Rectifying Section and Condensers in the Stripping Section of a Distillation Column,” Ind. Eng. Chem. Res., 35, 2801 (1996).
Agrawal, R., Z. T. Fidkowski, and J. Xu, “Prefractionation to Reduce Energy Consumption in Distillation Without Changing Utility Temperatures,” AIChE J., 42, 2118 (1996).
Agrawal, R., and D. M. Herron, “Optimal Thermodynamic Feed Conditions for Distillation of Ideal Binary Mixtures,” AIChE J., 43, 2984 (1997).
Agrawal, R., and D. M. Herron, “Efficient Use of an Intermediate Reboiler or Condenser in a Binary Distillation,” AIChE J., 44, (5), 1303 (May 1998).
Fidkowski, Z. T., and R. Agrawal, “Utilization of Waste Heat Stream in Distillation,” Ind. Eng. Chem. Res., 34, 1287 (1995).
Flower, J. R., and R. Jackson, “Energy Requirements in the Separation of Mixtures by Distillation,” Trans. Inst. Chem. Eng, 42, T249 (1964).
Kleinberg, W. T., “Dual Air Pressure Cycle to Produce Low Purity Oxygen,” U.S. Patent No. 4,702,757 (1987).
Lynd, L. R., and L. R. Grethlein, “Distillation with Intermediate Heat Pumps and Optimal Sidestream Return,” AIChE J., 32, 1347 (1986).
Patterson, W. C., and T. A. Wells, “Energy-Saving Schemes in Distillation,” Chem. Eng., 84, 78 (1977).
Terranova, B. E., and A. W. Westerberg, “Temperature-Heat Diagrams for Complex Columns: l. Intercooled/Interheated Distillation Columns,” Ind. Eng. Chem. Rev., 28, 1374 (1989).
Wankat, P. C., and D. P. Kessler, “Two-Feed Distillations: Same Composition Feeds with Different Enthalpies,” Ind. Eng. Chem. Res., 32, 3061 (1993).
Zodonik, S. B., “Balancing Energy Costs Against Equipment Costs,” Chem. Eng., 84, 99 (1977).

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Volume44, Issue6

June 1998

Pages 1316-1324

Intermediate reboiler and condenser arrangement for binary distillation columns

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Intermediate reboiler and condenser arrangement for binary distillation columns

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