化学工程2012，Vol.40Issue(11)：22-26,5.DOI:10.3969/j.issn.1005-9954.2012.11.006
复合体系下磷酸和硫酸的萃取动力学
Kinetics of extracting phosphoric acid and sulfuric acid in composite system
张莉 1丁瑶 2刘玉娟2
作者信息
- 1. 武汉工程大学环境与城市建设学院,湖北武汉430074
- 2. 武汉工程大学化工与制药学院,湖北武汉430074
- 折叠
摘要
Abstract
In order to deeply understand the mechanism and dynamic characteristics under the extraction process, the extraction kinetics of phosphoric acid and sulfuric acid was investigated by using constant-interface cell in the composite system. The effects of specific interfacial area, the concentration of phosphoric acid in the optimum extraction conditions and the concentration of sulfuric acid in the optimum extraction conditions on the extraction rate of phosphoric acid and sulfuric acid were reviewed. The kinetic equation of the extraction of phosphoric acid and sulfuric acid was put forward in the sulfuric acid-phosphoric acid system at 60 ℃. The results show that the extraction rate of phosphoric acid and sulfuric acid decreases with the increase of specific interfacial area, and increases with the increase of the initial concentration of phosphate in the aqueous phase gradually. With increasing the initial concentration of sulfuric acid in the aqueous phase, the extraction rate of phosphate is improved. The raw industrial phosphoric acid was used to verify the acid extraction kinetics. The result reveals that the extraction rates of the calculated values agree with the measured values of sulfuric acid and phosphoric acid.关键词
比界面积/初始水相中磷酸浓度/初始水相中硫酸浓度/萃取速率/萃取动力学Key words
specific interfacial area/ concentration of phosphoric acid in the optimum extraction conditions/ concentration of sulfuric acid in the optimum extraction conditions/ extraction rate/ extraction kinetics分类
化学化工引用本文复制引用
张莉,丁瑶,刘玉娟..复合体系下磷酸和硫酸的萃取动力学[J].化学工程,2012,40(11):22-26,5.
