连续联合制备氯化亚砜和三氯氧磷新工艺

为提高联合制备氯化亚砜和三氯氧磷间歇工艺的生产效率,采用多段釜式或塔式连续反应器,以三氯化磷为原料,通入二氧化硫和氯气,连续合成三氯氧磷和氯化亚砜。实验结果表明:氯化亚砜含量达到国家标准一级品指标,三氯氧磷质量分数达到99%以上,产品收率>90%。该工艺具有收率高、质量好、连续生产的优点,宜于规模化生产,是一种值得推广应用的工业制备方法。

A new technology of continuous preparing phosphorus oxychloride and thionyl chloride

In order to improve the batch process production efficiency of joint preparing phosphorus oxychloride and thionyl chloride,taking phosphorus trichloride as raw material,and passing the SO_2 and Cl_2 into the reactor,the phosphorus oxychloride and thionyl chloride can be synthesized continuously.The multiple bottle-type or tower-type flow reactor is adopted in this process.The experimental result shows that the thionyl chloride content can reach the index of frist-grade of National standard and the phosphorus oxychloride content can be over 99% and the product yield over 90%.The technology has such advantages as high yield and good quality of the product,and continuous production.It is an industrial preparation method for scale production and worth applying popularly.