基于响应曲面法的反应-萃取-结晶工艺优化

doi:10.11949/j.issn.0438-1157.20151171

化工学报 ›› 2016, Vol. 67 ›› Issue (2): 588-597.DOI: 10.11949/j.issn.0438-1157.20151171

基于响应曲面法的反应-萃取-结晶工艺优化

李云钊, 宋兴福, 孙玉柱, 孙泽, 于建国

华东理工大学国家盐湖资源综合利用工程技术研究中心, 化学工程联合国家重点实验室, 上海 200237

收稿日期:2015-07-22 修回日期:2016-01-22 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: 宋兴福
基金资助:
国家高技术研究发展计划项目(2011AA06A107)。

Optimization of reactive extraction-crystallization process based on response surface methodology

LI Yunzhao, SONG Xingfu, SUN Yuzhu, SUN Ze, YU Jianguo

National Engineering Research Center for Integrated Utilization of Salt Lake Resources, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2015-07-22 Revised:2016-01-22 Online:2016-02-05 Published:2016-02-05
Supported by:
supported by the National High Technology Research and Development Program of China(2011AA06A107).

摘要/Abstract

摘要：

氯化钙与二氧化碳通过反应-萃取-结晶工艺制备碳酸钙和氯化氢气体是制碱废液资源化利用的有效途径。用响应曲面中的Box-Behnken Design(BBD)设计实验,考察了氯化钙浓度、萃取剂体积分数、相比和温度4 个因素对反应-萃取-结晶耦合工艺中氯化钙转化率、有机相中氯化氢浓度以及产物碳酸钙的平均粒度的影响及交互作用,并分别建立了三响应值与影响因素间的回归方程。三响应预测最佳值分别为:氯化钙转化率95.08%、有机相氯化氢浓度1.126 mol·L^-1、碳酸钙平均粒度48.71 μm;相应的实验值分别为92.35%、1.123 mol·L^-1 和49.14μm。预测值与实验值接近,误差较小,说明建立的模型对于反应-萃取-结晶工艺的分析和预测准确可靠。

关键词: 废水处理, 结晶, 溶剂萃取, 响应曲面法, 工艺优化

Abstract:

The preparation of calcium carbonate and hydrogen chloride from calcium chloride and carbon dioxide by the reactive extraction-crystallization coupled process is an effective way for the utilization of alkaline waste liquid. In this paper, Box-Behnken Design (BBD) in response surface methodology was used to design the experiments to investigate the effects of concentration of calcium chloride (CaCl₂), volume fraction of extractant, phase ratio, and temperature on the conversion of CaCl₂, concentration of hydrogen chloride (HCl) in organic phase, and the average particle size of calcium carbonate (CaCO₃) in the reactive extraction-crystallization coupled process, respectively. Three quadratic models were developed to correlate the variables to the response values and were proved to be significant. The optimal values were found as follows: conversion of CaCl₂ 95.08% and 92.35%, concentration of HCl in organic phase 1.126 mol·L^-1 and 1.123 mol·L^-1, and average particle size of CaCO₃ 48.71 μm and 49.14 μm. The small errors between the predicted and experimental values showed that the established models were accurate and reliable for the analysis and prediction of the reactive extractioncrystallization process.

Key words: wastewater treatment, crystallization, solvent extraction, response surface methodology, process optimization

中图分类号:

TQ09

李云钊, 宋兴福, 孙玉柱, 孙泽, 于建国. 基于响应曲面法的反应-萃取-结晶工艺优化[J]. 化工学报, 2016, 67(2): 588-597.

LI Yunzhao, SONG Xingfu, SUN Yuzhu, SUN Ze, YU Jianguo. Optimization of reactive extraction-crystallization process based on response surface methodology[J]. CIESC Journal, 2016, 67(2): 588-597.

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基于响应曲面法的反应-萃取-结晶工艺优化

Optimization of reactive extraction-crystallization process based on response surface methodology

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