无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2013, Vol. 45 ›› Issue (5): 9-.

• 论文 • 上一篇    下一篇

六水合氯化铝在不同氯化物 体系中的溶解度现象研究

崔慧霞,程文婷,郭彦霞,程芳琴   

  1. 山西大学资源与环境工程研究所,环境与资源学院,国家环境保护煤炭废弃物资源化
    高效利用技术重点实验室,山西太原 030006
  • 发布日期:2013-05-03

Study on solubility phenomena of AlCl3·6H2O in different chloride systems

CUI  Hui-Xia, CHENG  Wen-Ting, GUO  Yan-Xia, CHENG  Fang-Qin   

  1. State Key Laboratory of Environmental Protection and Efficient Utilization Technology of Coal Waste Resources,School of
    Environment and Resources,Institute of Resources and Environment Engineering,Shanxi University,Taiyuan 030006,China
  • Online:2013-05-03

摘要: 以煤矸石酸浸滤液中六水合氯化铝的结晶为背景,以OLI软件为平台,用软件中嵌入的Bromley-Zemaitis 活度系数模型预测了温度范围为10~70 ℃、溶液浓度为0~17 mol/kg的条件下,六水合氯化铝分别在水、氯化钠、氯化钾、盐酸体系中的溶解度,并将预测结果同文献数据作了比较。结果表明,在水、氯化钠和氯化钾溶液中,温度和溶液浓度对六水合氯化铝溶解度的影响均可忽略;在盐酸溶液中,温度对六水合氯化铝溶解度的影响可忽略,但随着盐酸浓度的增大,六水合氯化铝的溶解度急剧降低。比较可知预测值与文献值吻合较好,说明Bromley-Zemaitis 活度系数模型可以作为研究手段用于预测六水合氯化铝在上述4个体系中的溶解度,为六水合氯化铝的工业结晶过程提供相平衡的预测。

关键词: 六水合氯化铝, 溶解度, Bromley-Zemaitis活度系数模型

Abstract: Based on the crystallization of AlCl3·6H2O in the acid-leaching filtrate of gangue,the activity coefficients model of Bromley-Zemaitis in software OLI can be used to predict the solubilities of AlCl3·6H2O in different systems,such as HCl, NaCl,KCl,and H2O,under the conditions of different temperatures(10~70 ℃) and concentrations(0~17 mol/kg).Meanwhile predicting values were compared with the literature ones.Results showed that in the solutions of H2O,NaCl,and KCl, temperature and solution concentration had little influence on the solubility of AlCl3·6H2O,and so did the temperature in the solution HCl.But with the increase of the concentration of HCl,the solubility of AlCl3·6H2O reduced sharply.The predicting values were similar to the literature ones.It demonstrated that the activity coefficients model of Bromley-Zemaitis in software OLI could be used to predict the solubilities of AlCl3·6H2O in the above mentioned 4 systems.It could provide phase equilibrium prediction for industrial crystallization AlCl3·6H2O.

Key words: AlCl3·, 6H2O;solubility;activity coefficients model of Bromley-Zemaitis

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