Abstract

Though a fully thermally coupled distillation column consumes less energy than an original column, it is not widely implemented in practice due to its operational difficulty. A new fully thermally coupled distillation column is proposed for the operability improvement, and its performance is investigated. The main improvement is the separation of a main column to give an upper and lower columns and the installation of an intermediate heat exchanger between them to regulate the fluctuation of product compositions. A proper manipulation of column pressure in the separated main columns made easy vapor flow without a compressor. The operability improvement is examined in a hexane process from the dynamic simulation using a commercial design software HYSYS. The simulation results indicate that the coupling among inputs and outputs is loosened to make easy manipulation of product compositions in the proposed distillation system.

주제어

#energy-efficient distillation   #thermally coupled distillation   #distillation operation  

저자의 다른 논문

참고문헌 (14)

1. E. A. Wolff and S. Skogestacl, 'Operation of iIntegrated three-product (petlyuk) distillation columns,' Ind Eng. Chem Res., vol. 34, pp. 2094-2103, 1995 
2. M. A. Schultz, D. G. Stewart, J. M. Harris, S. P. Rosenblum, M. S. Sharur, and D. E. O'Brien, 'Reduce costs with dividing-wall columns,' Chem Eng. Prog., vol. 97, no. 7, pp. 64-70, 2002 
3. C. Triantafyllou and R. Smith, 'The design and optimisation of fully thermally coupled distillation columns,' Trans. IChemE, Part A, vol. 70, pp. 118-132, 1992 
4. R. Agrawal and Z. T. Fidkowski, 'More operable arrangements of fully thermally coupled distillation columns,' AIChE J., vol. 44, pp. 2565-2568, 1998 
5. Z. Novak, Z. Kravanja and I. E. Grossmann, 'Simultaneous synthesis of distillation sequences in overall process schemes using an improved MINLP approach,' Computers chem. Engng., vol. 20, pp. 1425-1440, 1996 
6. M. Hostrup, R. Gani, Z. Kravanja, A. Sorsak, and I. E. Grossmann, 'Integration of themodynamic insights and MINLP optimization for the synthesis, design and analysis of process,' Computers chem Engng., vol. 25, pp. 73-83, 2001 
7. Y. H. Kim, 'An alternative structure of a fully thermally coupled distillation column for improved operability,' J. Chem Eng., Japan, vol. 36, pp. 1503-1509, 2003 
8. Y. H. Kim, 'Structural design of extended fully thermally coupled distillation columns,' Ind Eng. Chem Res., vol. 40, pp. 2460-2466, 2001 
9. Y. H. Kim, 'Rigorous design of extended fully thermally coupled distillation columns,' Chem Eng. J. vol. 89, pp. 89-99, 2002 
10. Y. H. Kim, 'Structural design and operation of a fully thermally coupled distillation columns.' Chem Eng. J., vol. 85, pp. 289-301, 2002 
11. Y. H. Kim, 'Structural design of fully thermally coupled distillation columns using a semi-rigorous model,' Comp. Chem. Eng., vol. 29, pp. 1555-1559, 2005 
12. Y. H. Kim, 'A new fully thermally coupled distillation column with postfractionator,' Chem. Eng. Process, 45, 254-263, 2006 
13. S. Widagdo. and W. D. Seider, 'Azeotropic distillation,' AIChE J., vol. 42, pp. 96-130, 1996 
14. K. N. Glinos and M. F. Malone, 'Minimum vapor flows in a distillation column with a sidestream stripper,' Ind Eng. Chem Process Des. Dev. vol. 24, pp. 1087-1090, 1985 

이 논문을 인용한 문헌 (0)

1. 이 논문을 인용한 문헌 없음