The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization

The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization

The solid-layer growth kinetics and resulting crystal purity for a well-mixed <i>p</i>-xylene (PX) melt with impurity of <i>o</i>-xylene (OX) or ethylbenzene (EB) were studied in this work at various cooling temperatures. A correlation based on the energy balance was adopted...

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Bibliographic Details
Main Author: Lie-Ding Shiau
Format: Article
Language:English
Published: MDPI AG 2020-02-01
Series:Processes
Subjects:
crystallization
growth rate
melt
para-xylene
impurity
Online Access:https://www.mdpi.com/2227-9717/8/2/175
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spelling doaj-4085660adbbf4de9bfe990ce6fdc9b0b2020-11-25T01:42:27ZengMDPI AGProcesses2227-97172020-02-018217510.3390/pr8020175pr8020175The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt CrystallizationLie-Ding Shiau0Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, TaiwanThe solid-layer growth kinetics and resulting crystal purity for a well-mixed <i>p</i>-xylene (PX) melt with impurity of <i>o</i>-xylene (OX) or ethylbenzene (EB) were studied in this work at various cooling temperatures. A correlation based on the energy balance was adopted to describe the dependence of growth rate on the temperature gradient between melt and cooling medium. An empirical equation based on the mass balance was proposed to relate the effective distribution coefficient with growth rate, mass transfer coefficient, and impurity mole fraction. By fitting the proposed empirical equation with the experimental effective distribution coefficients, the mass transfer coefficients for the PX/OX and PX/EB mixtures were retrieved respectively.https://www.mdpi.com/2227-9717/8/2/175crystallizationgrowth ratemeltpara-xyleneimpurity
collection DOAJ
language English
format Article
sources DOAJ
author Lie-Ding Shiau
spellingShingle Lie-Ding Shiau
The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
Processes
crystallization
growth rate
melt
para-xylene
impurity
author_facet Lie-Ding Shiau
author_sort Lie-Ding Shiau
title The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
title_short The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
title_full The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
title_fullStr The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
title_full_unstemmed The Dependence of Effective Distribution Coefficient on Growth Rate and Mass Transfer Coefficient for P-Xylene in Solid-Layer Melt Crystallization
title_sort dependence of effective distribution coefficient on growth rate and mass transfer coefficient for p-xylene in solid-layer melt crystallization
publisher MDPI AG
series Processes
issn 2227-9717
publishDate 2020-02-01
description The solid-layer growth kinetics and resulting crystal purity for a well-mixed <i>p</i>-xylene (PX) melt with impurity of <i>o</i>-xylene (OX) or ethylbenzene (EB) were studied in this work at various cooling temperatures. A correlation based on the energy balance was adopted to describe the dependence of growth rate on the temperature gradient between melt and cooling medium. An empirical equation based on the mass balance was proposed to relate the effective distribution coefficient with growth rate, mass transfer coefficient, and impurity mole fraction. By fitting the proposed empirical equation with the experimental effective distribution coefficients, the mass transfer coefficients for the PX/OX and PX/EB mixtures were retrieved respectively.
topic crystallization
growth rate
melt
para-xylene
impurity
url https://www.mdpi.com/2227-9717/8/2/175
work_keys_str_mv AT liedingshiau thedependenceofeffectivedistributioncoefficientongrowthrateandmasstransfercoefficientforpxyleneinsolidlayermeltcrystallization
AT liedingshiau dependenceofeffectivedistributioncoefficientongrowthrateandmasstransfercoefficientforpxyleneinsolidlayermeltcrystallization
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