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乳酸锌冷却结晶中溶液浓度的在线测量

发表时间:2010-09-15  浏览量:1867  下载量:699
全部作者: 张相洋,钱刚,钟亮,周兴贵,袁渭康
作者单位: 华东理工大学化学工程联合国家重点实验室
摘 要: 提出了一种利用电导率仪在线测量冷却结晶过程中溶液浓度的方法,即通过测定温度对均相溶液电导率的影响以及固体颗粒对晶浆电导率的贡献,从而估算溶液的浓度。实验过程中,以此方法对乳酸锌冷却结晶过程进行溶液浓度的在线测量,通过与离线高效液相色谱法(high performance liquid chromatography, HPLC)测得的实验值进行比较,证明可靠。
关 键 词: 化学分离工程;电导率;结晶;浓度;在线测量
Title: On-line monitoring of zinc lactate concentration during cooling crystallization process
Author: ZHANG Xiangyang, QIAN Gang, ZHONG Liang, ZHOU Xinggui, YUAN Weikang
Organization: State Key Laboratory of Chemical Engineering, East China University of Science and Technology
Abstract: A method concerning on-line monitoring of solution concentration during cooling crystallization process by using conductivity meter was proposed in this paper. That is, solute concentration in slurry under different temperatures can be estimated by investigating the effect of temperature on conductivity of homogeneous solution and the contribution of solid concentration to slurry conductivity, respectively. Furthermore, four cooling crystallization processes of zinc lactate were performed, and the variations of concentration were measured on-line based on this method. And the accuracy was verified by comparing with the experimental results measured off-line by high performance liquid chromatography (HPLC).
Key words: chemical separation technology; conductivity; crystallization; concentration; online measurement
发表期数: 2010年9月第17期
引用格式: 张相洋,钱刚,钟亮,等. 乳酸锌冷却结晶中溶液浓度的在线测量[J]. 中国科技论文在线精品论文,2010,3(17):1776-1781.
 
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