Interaction of kinetic and quality aspects during freeze drying in an adsorbent medium.

被引：6

作者：

Lombrana, JI

Villaran, MC

机构：

[1] Department of Chemical Engineering, Faculty of Sciences, University of País Vasco, 48080 Bilbao

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1996年 / 35卷 / 06期

关键词：

D O I：

10.1021/ie9504821

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A kinetic analysis of freeze drying by immersion in an adsorbent fluidized bed process has been carried out and will be discussed in this paper. The process is described based on a uniformly retreating ice front model in spherical geometry. The model needs to know both temperature and pressure driving forces, correlated as a function of water content. The influence exerted by operational conditions on the heat and mass coefficients has been studied. Transport coefficients are correlated as a function of the operating conditions to obtain equations that can be used for predicting purposes in fluid bed freeze drying. Kinetic aspects are related to quality indicators determined through shrinkage of product to select the most adequate operating conditions.

引用

页码：1967 / 1975

页数：9

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[2]

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[3]

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[4]

GUIGO EI, 1975, I INT FROID PARIS, P137