Experimental investigation of multiple steady states and parametric sensitivity in azeotropic distillation

C. J. Wang; D. S.H. Wong; I. L. Chien; R. F. Shih; S. J. Wang; C. S. Tsai

doi:10.1016/s0098-1354(97)87557-6

Experimental investigation of multiple steady states and parametric sensitivity in azeotropic distillation

C. J. Wang^*, D. S.H. Wong, I. L. Chien, R. F. Shih, S. J. Wang, C. S. Tsai

^*Corresponding author for this work

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Journal Article › peer-review

17 Scopus citations

Abstract

In this work, a laboratory scale sieve plate distillation column was constructed to study the dynamic behavior of the isopropyl alcohol(IPA), cyclohexane(CyH) and water(H₂O) azeotropic distillation. Two types of profiles that produce high purity IPA product were found. One passes around the IPA+CyH azeotrope. It is characterized by a plateau at 70°C. The bottom impurity is mainly cyclohexane. The other profile passes around the IPA+ H₂O azeotrope. It is characterized by a lot of stages having heterogeneous liquid splitting at the top. The bottom impurity is mainly water. A slight increase or decrease of reboiler duty will cause the temperature front to move towards the top or the bottom of the column and result in the loss of IPA purity. Moreover, the original steady state cannot be recovered after a cyclic series of step-changes in reboiler duty. This hysteresis phenomenon is caused by changes in amount of entrainer in the column.

Original language	English
Pages (from-to)	S535-S540
Journal	Computers and Chemical Engineering
Volume	21
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/s0098-1354(97)87557-6
State	Published - 1997

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title = "Experimental investigation of multiple steady states and parametric sensitivity in azeotropic distillation",

abstract = "In this work, a laboratory scale sieve plate distillation column was constructed to study the dynamic behavior of the isopropyl alcohol(IPA), cyclohexane(CyH) and water(H2O) azeotropic distillation. Two types of profiles that produce high purity IPA product were found. One passes around the IPA+CyH azeotrope. It is characterized by a plateau at 70°C. The bottom impurity is mainly cyclohexane. The other profile passes around the IPA+ H2O azeotrope. It is characterized by a lot of stages having heterogeneous liquid splitting at the top. The bottom impurity is mainly water. A slight increase or decrease of reboiler duty will cause the temperature front to move towards the top or the bottom of the column and result in the loss of IPA purity. Moreover, the original steady state cannot be recovered after a cyclic series of step-changes in reboiler duty. This hysteresis phenomenon is caused by changes in amount of entrainer in the column.",

author = "Wang, {C. J.} and Wong, {D. S.H.} and Chien, {I. L.} and Shih, {R. F.} and Wang, {S. J.} and Tsai, {C. S.}",

year = "1997",

doi = "10.1016/s0098-1354(97)87557-6",

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T1 - Experimental investigation of multiple steady states and parametric sensitivity in azeotropic distillation

AU - Wang, C. J.

AU - Wong, D. S.H.

AU - Chien, I. L.

AU - Shih, R. F.

AU - Wang, S. J.

AU - Tsai, C. S.

PY - 1997

Y1 - 1997

N2 - In this work, a laboratory scale sieve plate distillation column was constructed to study the dynamic behavior of the isopropyl alcohol(IPA), cyclohexane(CyH) and water(H2O) azeotropic distillation. Two types of profiles that produce high purity IPA product were found. One passes around the IPA+CyH azeotrope. It is characterized by a plateau at 70°C. The bottom impurity is mainly cyclohexane. The other profile passes around the IPA+ H2O azeotrope. It is characterized by a lot of stages having heterogeneous liquid splitting at the top. The bottom impurity is mainly water. A slight increase or decrease of reboiler duty will cause the temperature front to move towards the top or the bottom of the column and result in the loss of IPA purity. Moreover, the original steady state cannot be recovered after a cyclic series of step-changes in reboiler duty. This hysteresis phenomenon is caused by changes in amount of entrainer in the column.

AB - In this work, a laboratory scale sieve plate distillation column was constructed to study the dynamic behavior of the isopropyl alcohol(IPA), cyclohexane(CyH) and water(H2O) azeotropic distillation. Two types of profiles that produce high purity IPA product were found. One passes around the IPA+CyH azeotrope. It is characterized by a plateau at 70°C. The bottom impurity is mainly cyclohexane. The other profile passes around the IPA+ H2O azeotrope. It is characterized by a lot of stages having heterogeneous liquid splitting at the top. The bottom impurity is mainly water. A slight increase or decrease of reboiler duty will cause the temperature front to move towards the top or the bottom of the column and result in the loss of IPA purity. Moreover, the original steady state cannot be recovered after a cyclic series of step-changes in reboiler duty. This hysteresis phenomenon is caused by changes in amount of entrainer in the column.

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U2 - 10.1016/s0098-1354(97)87557-6

DO - 10.1016/s0098-1354(97)87557-6

M3 - 文章

AN - SCOPUS:0001433738

SN - 0098-1354

VL - 21

SP - S535-S540

JO - Computers and Chemical Engineering

JF - Computers and Chemical Engineering

IS - SUPPL.1

ER -

Experimental investigation of multiple steady states and parametric sensitivity in azeotropic distillation

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