De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen

H.A.C. Thijssen

Research output: Thesisinternal PhD, WU

Abstract

The effect of composition on plate efficiencies for binary mixtures of ethanol and water, n-heptane and methylcyclohexane, and methylcyclohexane and toluene was studied experimentally in an adiabatic distillation column of 3.8 cm internal diameter containing 9 sieve plates. Accurate data concerning the vapour-liquid equilibrium curves were required for the calculation of Murphree plate and point efficiencies. This led to the use of the test for internal consistency of vapour-liquid equilibrium data as introduced by Harington, which was extended to P constant, T variable and corrected for differences from an ideal gas of the vapour phase. An exact graphic method to evaluate the vapour-liquid equilibrium from boiling point composition data of binary mixtures was derived.

The observed point efficiencies on overall gas basis seemed to vary markedly with composition in low and high concentrations. It was demonstrated that these variations could not be attributed to lack of precision in the equiibrium data, interference with the column operation by sampling, variation in physical properties with composition, or a variation in stripping or rectifying factor mV/L with concentration.

The point efficiencies at total reflux seemed to be a function of the corresponding driving forces for mass transfer in the gas phase.

Original languageDutch
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • van Wijk, W.R., Promotor, External person
Award date21 Oct 1955
Place of Publication's-Gravenhage
Publisher
Publication statusPublished - 1955
Externally publishedYes

Keywords

  • distillation
  • evaporation
  • technology

Cite this

Thijssen, H.A.C.. / De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen. 's-Gravenhage : Staatsdrukkerij, 1955. 104 p.
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title = "De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen",
abstract = "The effect of composition on plate efficiencies for binary mixtures of ethanol and water, n-heptane and methylcyclohexane, and methylcyclohexane and toluene was studied experimentally in an adiabatic distillation column of 3.8 cm internal diameter containing 9 sieve plates. Accurate data concerning the vapour-liquid equilibrium curves were required for the calculation of Murphree plate and point efficiencies. This led to the use of the test for internal consistency of vapour-liquid equilibrium data as introduced by Harington, which was extended to P constant, T variable and corrected for differences from an ideal gas of the vapour phase. An exact graphic method to evaluate the vapour-liquid equilibrium from boiling point composition data of binary mixtures was derived.The observed point efficiencies on overall gas basis seemed to vary markedly with composition in low and high concentrations. It was demonstrated that these variations could not be attributed to lack of precision in the equiibrium data, interference with the column operation by sampling, variation in physical properties with composition, or a variation in stripping or rectifying factor mV/L with concentration.The point efficiencies at total reflux seemed to be a function of the corresponding driving forces for mass transfer in the gas phase.",
keywords = "distillatie, evaporatie, technologie, distillation, evaporation, technology",
author = "H.A.C. Thijssen",
note = "WU thesis 197 Proefschrift Wageningen",
year = "1955",
language = "Dutch",
publisher = "Staatsdrukkerij",
school = "Wageningen University",

}

Thijssen, HAC 1955, 'De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen', Doctor of Philosophy, Wageningen University, 's-Gravenhage.

De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen. / Thijssen, H.A.C.

's-Gravenhage : Staatsdrukkerij, 1955. 104 p.

Research output: Thesisinternal PhD, WU

TY - THES

T1 - De invloed van de samenstelling van binaire mengsels op het schotelrendement in rectificatiekolommen

AU - Thijssen, H.A.C.

N1 - WU thesis 197 Proefschrift Wageningen

PY - 1955

Y1 - 1955

N2 - The effect of composition on plate efficiencies for binary mixtures of ethanol and water, n-heptane and methylcyclohexane, and methylcyclohexane and toluene was studied experimentally in an adiabatic distillation column of 3.8 cm internal diameter containing 9 sieve plates. Accurate data concerning the vapour-liquid equilibrium curves were required for the calculation of Murphree plate and point efficiencies. This led to the use of the test for internal consistency of vapour-liquid equilibrium data as introduced by Harington, which was extended to P constant, T variable and corrected for differences from an ideal gas of the vapour phase. An exact graphic method to evaluate the vapour-liquid equilibrium from boiling point composition data of binary mixtures was derived.The observed point efficiencies on overall gas basis seemed to vary markedly with composition in low and high concentrations. It was demonstrated that these variations could not be attributed to lack of precision in the equiibrium data, interference with the column operation by sampling, variation in physical properties with composition, or a variation in stripping or rectifying factor mV/L with concentration.The point efficiencies at total reflux seemed to be a function of the corresponding driving forces for mass transfer in the gas phase.

AB - The effect of composition on plate efficiencies for binary mixtures of ethanol and water, n-heptane and methylcyclohexane, and methylcyclohexane and toluene was studied experimentally in an adiabatic distillation column of 3.8 cm internal diameter containing 9 sieve plates. Accurate data concerning the vapour-liquid equilibrium curves were required for the calculation of Murphree plate and point efficiencies. This led to the use of the test for internal consistency of vapour-liquid equilibrium data as introduced by Harington, which was extended to P constant, T variable and corrected for differences from an ideal gas of the vapour phase. An exact graphic method to evaluate the vapour-liquid equilibrium from boiling point composition data of binary mixtures was derived.The observed point efficiencies on overall gas basis seemed to vary markedly with composition in low and high concentrations. It was demonstrated that these variations could not be attributed to lack of precision in the equiibrium data, interference with the column operation by sampling, variation in physical properties with composition, or a variation in stripping or rectifying factor mV/L with concentration.The point efficiencies at total reflux seemed to be a function of the corresponding driving forces for mass transfer in the gas phase.

KW - distillatie

KW - evaporatie

KW - technologie

KW - distillation

KW - evaporation

KW - technology

M3 - internal PhD, WU

PB - Staatsdrukkerij

CY - 's-Gravenhage

ER -