New process of preparing anhydrous hydrogen fluoride ammonium by fluorosilicic acid
New process of preparing anhydrous hydrogen fluoride ammonium by fluorosilicic acid
复制标题
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
X. Hua
中科院分区：
文献类型：
--
作者：
X. Hua
氢氟酸是磷肥生产中的副产品，它与氨反应生成无水氟化氢铵。通过单因素实验确定了最佳工艺条件：氢氟酸与氨水的摩尔比为1。0∶ 6。0，以质量分数为20%的氨为原料。氨解反应后得到的氟化铵溶液经氢氟酸酸化、浓缩、结晶得到无水氟化氢铵。在此条件下，生成的氟化氢铵质量分数为98%，符合行业标准要求。新技术不仅具有良好的经济效益和环境效益，而且生产成本低。
As a by-product in the production of phosphate fertilizer,fluosilicic acid reacts with ammonia to produce anhydrous hydrogen fluoride ammonium. The optimum process conditions of reaction through the single-factor experiment were as follows: the mole ratio of fluosilicic acid to ammonia water was 1. 0∶ 6. 0,with the mass fraction20% of ammonia as the material. Anhydrous hydrogen fluoride ammonium was obtained through hydrofluoric acid acidification concentration and crystallization to ammonium fluoride solution which was got after the ammonolysis reaction. Under these conditions,the generated ammonium hydrogen fluoride has a mass fraction of 98%,conforming to the industry standard requirements. The new technology has not only the good economic and environmental benefits,but also the low production cost.