A desalting technology,which is safe and environmental friendly,is proposed based on solublility characteristics of sodium nitrate in DMSO solution and the boiling point of DMSO saline solution.

• 针对硝酸钠在二甲基亚砜溶液中溶解度特性及二甲基亚砜盐溶液的沸点,提出一种安全环保除盐新工艺,即:减压蒸发、加水降温结晶及离心过滤。