复分解三步循环法生产硝酸钾  

Production of potassium nitrate by double decomposition three-step circulation process

作　　者：张罡 沈晃宏[2] 张一甫[2] 

机构地区：[1]岳阳市化工蓄电池厂,岳阳414000 [2]岳阳师范学院,岳阳414000

出　　处：《现代化工》2002年第1期41-42,44,共3页Modern Chemical Industry

摘　　要：介绍了复分解三步循环法生产硝酸钾的生产工艺。和四步法生产硝酸钾工艺比较 ,减少了加料步骤 ,在反应溶液中加入助剂后使溶液中硝酸钾结晶率提高 2 0 %以上。经检测产品质量组成为K2 O 43 0 1 %～ 45 68% ,N 1 3 80 %～ 1 4 2 0 % ,Cl0 3 %～ 2 1 5 % ,H2 O 1 98%～ 3 45 %The process of double decomposition three-step circulation for potassium nitrate production was introduced. Compared with the four-step process, feeding steps in the new process were reduced and the crystallization rate of potassium nitrate was increased by over 20% after adding assistants into the reaction solution. Tests show that the mass fraction was 43.01%-45.68% for K2O, 13.80%-14.20% for N, 0.3% -2.15% for Cl and 1.98% -3.45% for H2O.

关 键 词：硝酸钾 复分解循环法 助剂 氯化铵 四步法 工艺比较 三步法 

分 类 号：TQ131.13[化学工程—无机化工]