超净高纯硝酸纯化技术的研究

Research on High-Purity Clean Nitric Acid Purification Techniques

高纯度硝酸在市场上有了越来越多的需求量,简述了硝酸的提纯工艺及高纯度硝酸提纯的方法。高纯度硝酸的提纯工艺主要由:普通蒸馏、精馏、减压蒸馏、亚沸蒸馏、膜分离等。这些方法均有优缺点,需要根据实际情况进行选择。如何将几种提纯方式的优点进行集合,将超高纯度硝酸的提纯工艺达到最优化是如今研究人员讨论的重点。

High-purity nitric acid have more and more demand in the market,the paper describes the method of purification process of nitric acid and nitric acid of high purity purification.Today,the high-purity nitric acid has several main purification process：ordinary distillation,distillation,vacuum distillation,sub-boiling distillation,membrane separation method has advantages and disadvantages,you need to be selected according to the actual situation.How the benefits were set in several ways purification,the purification process of ultra-high purity nitric acid to optimize the focus now researchers discussed.