| 铬盐液相氧化工艺分离过程中多元体系溶解度的测定及关联 |
| |
| 引用本文： | 江春立,张美羲,谭世语,董立春,张红晶.铬盐液相氧化工艺分离过程中多元体系溶解度的测定及关联[J].化工学报,2014,65(10):3747-3752. |
| |
| 作者姓名： | 江春立 张美羲 谭世语 董立春 张红晶 |
| |
| 作者单位： | 1.重庆大学化学化工学院, 重庆 400044;2.低品位能源利用技术及系统教育部重点实验室, 重庆 400044;3.洁净能源与资源利用化工过程重庆市重点实验室, 重庆 400044 |
| |
| 基金项目： | 国家自然科学基金项目(20117620 |
| |
| 摘 要： | 采用平衡分析法，测定了常压下铬铁矿液相氧化生产铬盐工艺分离过程涉及的NaOH-H2O-Na2CrO4、NaOH-H2O-NaAlO2、NaOH-H2O-Na2SiO3三元体系，NaOH-H2O-Na2CrO4-Na2SiO3、NaOH-H2O-Na2CrO4-NaAlO2、NaOH-H2O-Na2SiO3-NaAlO2 四元体系及NaOH-H2O-Na2CrO4-Na2SiO3-NaAlO2五元体系中Na2CrO4、NaAlO2、Na2SiO3的溶解度，并使用Apelblat方程对实验数据进行了回归。实验的温度范围为353.15～403.15 K，除测量Na2CrO4在NaOH-H2O-Na2CrO4三元体系中的溶解度时NaOH的浓度从100 g·L-1改变到 800 g·L-1，其他体系中都固定NaOH浓度为500 g·L-1。研究结果表明铝酸钠、硅酸钠无论单独存在还是同时存在均会降低铬酸钠的溶解度，其中铝酸钠对铬酸钠的溶解度影响最大，而硅铝共存反而对铬酸钠溶解度影响最小。
|
| 关 键 词： | 铬酸钠 溶解度 平衡法 Apelblat方程 分离 |
| 收稿时间： | 2014-03-24 |
| 修稿时间： | 2014-05-29 |
Solubility measurement and correlation in multicomponent systems related to separation process of liquid-phase oxidation of chromite |
| |
| JIANG Chunli,ZHANG Meixi,TAN Shiyu,DONG Lichun,ZHANG Hongjing.Solubility measurement and correlation in multicomponent systems related to separation process of liquid-phase oxidation of chromite[J].Journal of Chemical Industry and Engineering(China),2014,65(10):3747-3752. |
| |
| Authors: | JIANG Chunli ZHANG Meixi TAN Shiyu DONG Lichun ZHANG Hongjing |
| |
| Affiliation: | 1.School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;2.Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, Chongqing 400044, China;3.Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, Chongqing 400044, China |
| |
| Abstract: | The solubility of Na2CrO4, NaAlO2 and Na2SiO3 in the multicomponent systems related to the manufacture of chromium compounds by liquid-phase oxidation of chromite was measured by using the equilibrium analysis method at the atmospheric pressure and temperature ranging from 353.15 K to 403.15 K, which include ternary systems NaOH-H2O-Na2CrO4, NaOH-H2O-NaAlO2 and NaOH-Na2SiO3-H2O, quaternary systems NaOH-H2O- Na2CrO4-Na2SiO3, NaOH-H2O-Na2CrO4-NaAlO2 and NaOH-NaAlO2-Na2SiO3-H2O, and quinary systems NaOH-H2O-Na2CrO4-Na2SiO3-NaAlO2. Except the Na2CrO4 solubility in ternary system NaOH-H2O-Na2CrO4, in which NaOH concentration varied from 100 g·L-1 to 800 g·L-1, the NaOH concentration was constant at 500 g·L-1. The experimental data were correlated by the Antonie equation, λ-h equation, and Apelblat equation, demonstrating that the Apelblat equation can well predict the solubility of the systems. The results show that the presence of NaAlO2 and Na2SiO3 decreases Na2CrO4 solubility, while the coexistence of NaAlO2 and Na2SiO3 has less effect than the presence of single NaAlO2 and Na2SiO3. |
| |
| Keywords: | Na2CrO4 solubility equilibrium method Apelblat equation separation |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
