基于ERT技术的硫酸钡颗粒形成过程研究

摘要采用电阻层析成像技术（ERT）实时监测反应器内横截面电导率变化，进而考查络合法形成球形硫酸钡颗粒的过程中溶液电导率变化趋势。在拟均相条件下，根据ERT实时监测、采集、分析硫酸钡颗粒生成过程中电导率变化情况，得出电导率变化曲线，并采用扫描电子显微镜方法观察随着反应时间变化硫酸钡颗粒的形态变化情况。实验结果表明，使用ERT监测电导率变化可以得出不同浓度条件下电导率变化趋势及其浓度条件下的最适宜反应时间，并验证了采用电阻层析技术（ERT）对研究硫酸钡颗粒的形成具有较高的灵敏度，可用于研究硫酸钡颗粒的形成最适宜时间；用扫描电子显微镜观察络合法合成硫酸钡最开始形成一种梭型颗粒，随着钡离子的缓慢释放，硫酸钡颗粒不断生长，最终得到粒度均匀、分散性良好的球形硫酸钡颗粒。

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	刘月姣
	叶飞飞
	郭晓燕
	杨索和
	何广湘
	靳海波

关键词：硫酸钡颗粒电阻层析成像技术沉淀电导率搅拌

Abstract： The conductivity of the reactor was monitored by resistance tomography (ERT) in real time, and the change of the conductivity of the solution during the formation of spherical barium sulfate particles was investigated. Under Pseudo-homogeneous conditions, the relation between the conductivity change and barium sulfate particles is on line monitored by ERT, which is used to analyze the generated particle concentration, and the morphology of barium sulfate particles in reaction stage is observed using the scanning electron microscope. The experimental results show that the electrical conductivity of change trend and the best reaction time under different concentration are obtained through the ERT monitoring conductivity change, which can form the size uniformity of spherical particles. It also verifies the electrical resistance tomography (ERT) technique can be used to study the formation of barium sulfate particles with high sensitivity.

Keywords： barium sulfate； electrical resistance tomography； precipitation； conductivity； agitation

Received 2017-05-08;

Corresponding Authors: 靳海波,E-mail:jinhaibo@bipt.edu.cn。 Email: jinhaibo@bipt.edu.cn

About author: 刘月姣(1993-),女,硕士研究生,现从事多相流方面的研究。

引用本文:

刘月姣, 叶飞飞, 郭晓燕, 杨索和, 何广湘, 靳海波.基于ERT技术的硫酸钡颗粒形成过程研究[J]. 化学工业与工程, 2019,36(3): 42-48

Liu Yuejiao, Ye Feifei, Guo Xiaoyan, Yang Suohe, He Guangxiang, Jin Haibo.Formation Process of Barium Sulfate Particles Using Electrical Resistance Tomography[J]. Chemcial Industry and Engineering, 2019,36(3): 42-48

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