高纯度五氯化磷清洁生产工艺研究

以三氯化磷和氯气为原料,采用等摩尔雾化方式给料,以气-气对流方式反应、阶段式控温、升华纯化的合成工艺,生产出高纯度五氯化磷,产品收率≥98%,产品质量分数≥99.5%。与传统工艺相比,产品收率提高了10%;五氯化磷质量分数提高了1.9%。生产过程无“三废”排放,实现了清洁生产和安全生产。

Study on clean production technology of highly purified phosphorus pentachloride

The production technology of highly purified phosphorus pentachloride (PCl5) by the reaction of PCl3 with Cl2 has been improved,which under some reaction conditions includes novel equal molar spray feeding,gas-gas convection,stage temperature controlling,sublimation & purification (technique).The yield of PCl5 was more than 98% and the purity was higher than 99.5%.Compared with the traditional production process,the mass fraction of PCl5 increased by 1.9% and the yield improved by 10%.There were no waste water,exhausted gas and waste solid emission in the whole process,the clean and safety production of highly purified PCl5 could be realized.