黑索今制备过滤过程中的特性与安全性

Characteristics and Safety of RDX in Filtering Process in RDX Preparation

为分析黑索今(RDX)制备过滤工艺中的特性和安全性,以一定固含量的RDX-水悬浮液为物料,模拟RDX生产的过滤过程,通过测试RDX静态恒定压差下的过滤时间所对应的滤液流量,得到了不同操作条件下的过滤常数K和滤饼压缩性指数s,并讨论了过滤条件对过滤特性的影响。结果表明,过滤常数K值随介质厚度的减小、过滤压力和介质孔径的增大而增大,RDX滤饼属中、轻度压缩材料。结合RDX静态和动态过滤过程中滤饼含湿量变化规律,对过滤过程的安全性进行了分析,结果表明,过滤工序的操作安全性明显高于干燥工序。

In order to analyze the characteristics and safety of RDX in filtering process in preparation,acertain amount of solid RDX-aqueous suspension was used as the material to simulate filter operation in RDX production process under different filtering conditions. The data of RDX filter time and corresponding filtrate volume under static constant pressure difference were measured,and filter constant K and cake compressibility index s under different operating conditions were obtained. Influence of operating conditions on the filtration properties was also discussed. Results show that K increases with the increasing of filter pressure and separating medium aperture,and the decrease of medium thickness.RDX filter cake is a moderately or mild compressed material. Combined with variation of moisture contents of RDX filter cake in static and dynamic processes,safety of the filtering was analyzed. Results show that safety in filtering process is obviously higher than that in dry process in RDX production.