Transient modeling of zinc extraction with D2EHPA in a Kuhni column

被引：19

作者：

Neto, Artur Pereira ^{[1
]}

Mansur, Marcelo Borges ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Met & Mat Engn, BR-31270901 Belo Horizonte, MG, Brazil

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2013年 / 91卷 / 12期

关键词：

Zinc extraction; D2EHPA; Kuhni column; Back-mixing; Forward-mixing; POPULATION BALANCE EQUATION; DROP-SIZE DISTRIBUTION; PHASE HOLD-UP; MASS-TRANSFER; LIQUID; PREDICTION; HYDRODYNAMICS;

D O I：

10.1016/j.cherd.2013.05.014

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The transient extraction of zinc sulfate with D2EHPA (di-2-ethylhexyl phosphoric acid) in a section of a Kuhni column operated with total recirculation of liquid phases was modeled using the back-mixing and the forward-mixing approaches. The mathematical developments for both models as well as their numerical solutions are given in detail. Operating parameters were calculated using recommended correlations available in the literature and simulations were confronted with experimental data. Both models revealed to describe column operation adequately under evaluated conditions. In addition, as back-mixing and forward-mixing approaches are particularly equivalent in very stirred conditions, the former approach seems to be more advantageous to describe practical situations due to its simplicity in comparison to the later approach. (C) 2013 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：2323 / 2332

页数：10

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