Falling film melt crystallization (III): Model development, separation effect compared to static melt crystallization and process optimization
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Jiang, Xiaobin
- 通讯作者：
- Jiang, XB (reprint author), Dalian Univ Technol, R&D Ctr Membrane Sci & Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
- 合写作者：
- Xiao, Wu,He, Gaohong
- 发表时间：
- 2014-09-27
- 发表刊物：
- CHEMICAL ENGINEERING SCIENCE
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 117
- 页面范围：
- 198-209
- ISSN号：
- 0009-2509
- 关键字：
- Melt crystallization; Porous media; Separations; Simulation; Optimization
- 摘要：
- This article describes the development of a model for the processes of crystal layer growth and sweating in static melt crystallization (SMC). Model foundations and fractal porous media theory were introduced from models of falling film melt crystallization (FFMC). Consistent simulation results were obtained for this model without using a fitting parameter. A systematic comparison of SMC and FFMC was conducted to reveal the advantages and disadvantages of separation in these two melt crystallization modes. The resulting models were used to optimize key operational profiles in FFMC and SMC. The average effective distribution coefficients (K-eff) over bar of calcium and sodium ion impurities were determined to be 0.03 and 0.025, respectively, for a combined FFMC and SMC operation. The separation potential of melt crystallization is being explored using various models and simulations for application in the industrial preparation of ultrapure chemicals. (C) 2014 Elsevier Ltd. All rights reserved.
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