废水中氰化物加压水解反应动力学及工艺条件的优化  

Kinetics of Pressured Hydrolysis of Cyanides in Wastewater and Optimization of Reaction Condition

作　　者：杨先义[1] 杨普江[2] 

机构地区：[1]胜利油田有限公司物资供应处,山东东营257056 [2]石油大学(华东)化学化工学院应用化学系,山东东营257061

出　　处：《山东化工》2003年第5期11-14,共4页Shandong Chemical Industry

摘　　要：研究了含氰废水的加压水解反应。证明KCN的加压水解反应对CN- 符合一级反应动力学规律 ,进而得到了不同 pH下KCN溶液加压水解反应速率常数及反应活化能。实验证明 :升高温度、增加溶液 pH均可提高CN- 的去除率 ;当 pH >12时 ,CN-的去除率随pH变化趋缓。通过正交实验得出 ,含氰废水加压水解的最佳处理条件为 :处理时间 80min、温度 180℃、pH值 =11.0。Pressured hydrolysis of cyanides in wastewater was studied. Taking potassium cyanide (KCN) as an example. The experiment proved that pressured hydrolysis of KCN in water follow the first-order reaction kinetics, thus the constants of reaction rate under different pH values and activation energy were obtained. The effects of temperature and pH on the reaction were discussed. Orthodoxy trials show that the best reaction condition of pressured hydrolysis of cyanide is as follows: treatment time is 80min; temperature is 180℃;pH is 11.0.

关 键 词：氰化物 加压水解 动力学 工艺条件 

分 类 号：TQ013.2[化学工程] X78[环境科学与工程—环境工程]