Phase Diagrams of Na2CO3鈥揅O(NH2)2鈥揌2O2鈥揌2O System at 0 掳C and 25 掳C and the Production of Urea Peroxide and Sodium Percarbo

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• 作者：Jilin Cao ; Huiyong Jing ; Tianyang Lan ; Jingjie Wang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2013
• 出版时间：February 14, 2013
• 年：2013
• 卷：58
• 期：2
• 页码：377-382
• 全文大小：225K
• 年卷期：v.58,no.2(February 14, 2013)
• ISSN：1520-5134

文摘

There is a great deal of H₂O₂ loss and low production benefit in the traditional technology of urea peroxide production. To develop a new method of producing urea peroxide, the mutual solubilities in the quaternary system Na₂CO₃鈥揅O(NH₂)₂鈥揌₂O₂鈥揌₂O were measured, and the corresponding diagrams were plotted at 0 掳C and 25 掳C. Based on the analysis about the phase diagram, this work put forward a new technology of the combination production of urea peroxide and sodium percarbonate. Urea peroxide was first produced at 0 掳C; then sodium percarbonate was produced according to the reaction of Na₂CO₃ with the residual solution after urea peroxide production at 25 掳C. After sodium percarbonate production, the residual solution was evaporated and concentrated and then used to produce urea peroxide, and thereby the stable recycle production of CO(NH₂)₂路H₂O₂ and Na₂CO₃路1.5H₂O₂ could be realized.