【摘要】 研究了配比、结晶反应温度及升温速度、结晶反应时间对产品质量和收率的影响。实验结果 :胺酸比 (H2 HCN∶H2 SO4 )为 1∶0 .5、结晶反应温度 2 0～ 30℃及升温速度 3℃ /h、结晶反应时间 4d ,产物含量 98 5 0 % ,收率 70 %更多还原

【Abstract】 The effects of ratio, reaction temperature and time, velocity of temperature increasing on the production yield and quality have been studied. The experiment shows that an optimum condition is the molecular ratio of cyanamide to acid. Their ratio is (n (H 2NCN)∶n(H 2SO 4)=1∶0.5), the reaction temperature and time is 20～30℃ and 4 days respectively, the velocity of temperature increasing is 3℃/h.更多还原