| 溶剂萃取法制备磷酸二氢钾 |
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| 引用本文： | 姬凌波,刘代俊,陈建钧. 溶剂萃取法制备磷酸二氢钾[J]. 磷肥与复肥, 2013, 28(6): 9-10 |
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| 作者姓名： | 姬凌波 刘代俊 陈建钧 |
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| 作者单位： | 四川大学 化学工程学院，四川 成都 610065 |
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| 基金项目： | 微波场中动力波耦合高温反应过程的研究（21076131） |
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| 摘 要： | 研究溶剂萃取法制磷酸二氢钾过程中萃取剂种类、萃取剂浓度、相比、时间、温度对萃取效果的影响.结果表明,使用三辛胺-环己烷混合萃取剂（c（三辛胺）=1.1 mol/L）,在30℃、相比为1时,经过5次错流萃取（每次萃取5 min）,所得磷酸二氢钾w（KH2PO4）为97.66％,达到了HG2321-1992规定的农用磷酸二氢钾一等品的标准.
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| 关 键 词： | 磷酸二氢钾 萃取 三辛胺 环己烷 |
| 收稿时间： | 2013-06-18 |
| 修稿时间： | 2013-07-25 |
Preparation of Potassium Dihydrogen Phosphate in Solvent Extraction Process |
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| JI Ling-bo,LIU Dai-jun,CHEN Jian-jun. Preparation of Potassium Dihydrogen Phosphate in Solvent Extraction Process[J]. Phosphate & Compound Fertilizer, 2013, 28(6): 9-10 |
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| Authors: | JI Ling-bo LIU Dai-jun CHEN Jian-jun |
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| Affiliation: | (School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China) |
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| Abstract: | The effects of type and concentration of extractant, ratio of phase, extracting time, operation temperature on the extraction efficiency are investigated for preparation of potassium dihydrogen phosphate with solvent extraction process. The results indicate that with TOA-cyclohexane （c（TOA） =1.1 mol/L） as mixed extractant, ratio of phase of 1, five times extraction （5 rain each time） at 30 ℃ , the purity of KH2P04 can reach to 97.66%, which can satisfy the standard for agricultural potassium dihydrogen phosphate grade of HG2321- 1992. |
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| Keywords: | potassium dihydrogen phosphate extraction trioctylamine （TOA） cyclohexane |
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