氯盐体系硝酸/盐酸脉冲萃取分离装置水力学研究  

Study on hydraulics of pulsed extraction separation device for nitric acid/hydrochloric acid in chloride salt system

作　　者：潘柏成 孙泽 马珍 张海军 董昌吉 宋兴福 PAN Baicheng;SUN Ze;MA Zhen;ZHANG Haijun;DONG Changji;SONG Xingfu(Engineering Research Center of Resources(Salt Lake)Process Engineering,Ministry of Education,East China University of Science and Technology,Shanghai 200237,China;Qinghai Salt Lake Industry Corporation Limited;Qinghai Salt Lake Nitrate Industry Corporation Limited)

机构地区：[1]资源(盐湖)过程工程教育部工程研究中心,华东理工大学,上海200237 [2]青海盐湖工业股份有限公司 [3]青海盐湖硝酸盐业股份有限公司

出　　处：《无机盐工业》2022年第1期91-95,共5页Inorganic Chemicals Industry

基　　金：国家重点研发计划(2018YFC1903803)。

摘　　要：硝酸-氯化钾直接法可低成本制备熔盐级硝酸钾,溶剂萃取分离氯盐溶液中的硝酸和盐酸是关键步骤之一。研究了处理H+/K+/Cl-/H_(2)O-磷酸三丁酯/磺化煤油体系脉冲筛板萃取塔的水力学性能,结果表明分散相液滴直径随脉冲强度的增大而减小,与两相表观流速无关;存留分数随脉冲强度的增大呈现先减小后增大的趋势,随两相表观流速的增大而增大。拟合得到了液滴直径与存留分数的Kumar-Hartland关联式,两者计算值和实验值的平均相对偏差(AARD)分别为4.74%与5.60%。Direct method of nitric acid-potassium chloride can produce potassium nitrate for molten salt at low cost.The separation of nitric acid/hydrochloric acid from a solution containing chloride salts by solvent extraction is one of the key steps.The hydraulic performance of the pulsed sieve plate extraction column in the treatment of H+/K+/Cl-/H_(2)O-tributyl phosphate/sulfonated kerosene system was studied.The results showed that the diameter of the dispersed phase drops decreased with the increase of the pulse intensity,and the superficial velocity of the two phases had almost no effect on it.The holdup firstly decreased and then increased with the increase of the pulse intensity,and increased with the increase of the superficial velocity of the two phases.According to the experimental data,Kumar-Hartland correlations of drop diameter and holdup were fitted,and the average absolute relative deviation(AARD)was 4.74%and 5.60%,respectively.

关 键 词：氯盐体系 溶剂萃取 脉冲筛板萃取塔 水力学 

分 类 号：TQ124.4[化学工程—无机化工]