DSC对尿素二元混合体系低共熔点的测定  

Determination by DSC of Eutectic Point of Urea Binary Mixture System

作　　者：艾波[1] 陈隆隆[1] 李接励[1] 陈明良[1] 徐静安[1] 梁济[1] 

机构地区：[1]上海化工研究院,200062

出　　处：《化肥工业》2010年第4期18-22,共5页Chemical Fertilizer Industry

基　　金：2008年上海市人才发展资金资助项目(项目编号050)

摘　　要：利用尿素可与多种物质形成低共熔物的特性,以降低混合料浆的温度,从而可减少尿基复合肥中缩二脲的生成量。使用差示扫描量热仪(DSC)分别测定尿素-氯化铵和尿素-氯化钾二元体系共熔特性,得到固液相图,确定了尿素二元混合体系的最低共熔点。By utilization of the characteristics of eutectic mixtures formed by urea and various substances, the temperature of the eutectic slurry is lowered, thereby reducing the formation of biuret in the urea-based compound fertilizers. The eutectie characteristics are determined respectively of urea- ammonium chloride and urea-potassium chloride binary systems by differential scanning calorimetry （DSC） , solid-liquid phase diagrams are obtained, and the minimum eutectic points of urea-based binary mixtures are established.

关 键 词：DSC 尿素 氯化铵 氯化钾 二元相图 共熔点 

分 类 号：TQ028.63[化学工程]