文章基本信息

标题：Investigation of organic desulfurization additives affecting the calcium sulfate crystals formation
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作者：Lina Lv ; Rui Gao ; Jianbin Yang 等
期刊名称：Chemical Industry and Chemical Engineering Quarterly
印刷版ISSN：1451-9372
出版年度：2017
卷号：23
期号：2
页码：161-167
DOI：10.2298/CICEQ151123027L
出版社：Association of the Chemical Engineers
摘要：In the study, the optimal experimental conditions for gypsum crystals formation were 323 K, 300 rpm stirring speed. The major impurities of Mg2 , Al3 and Fe3 were found to inhibit calcium sulfate crystals formation. Fe3 caused the strongest inhibition, followed by Mg2 and Al3 . The influence of desulfurization additives on the gypsum crystals formation was explored with the properties of moisture content, particle size distribution and crystal morphology. The organic desulfurization additives of adipic acid, citric acid, sodium citrate and benzoic acid were investigated. Citric acid and sodium citrate were found to improve the quality of gypsum. Moisture contents were reduced by more than 50%, gypsum particle sizes were respectively enlarged by 9.1 and 22.8%, induction time extended from 4.3 (blank) to 5.3 and 7.8 min, and crystal morphology trended to be thicker.
关键词：calcium sulfate crystals; desulfurization additives; impurities; wet flue gas desulfurization.