摘要
采用特定的催化剂,在反歧化精馏装置上由二氯二氢硅制备三氯氢硅。研究了物料配比、温度、压力、回流量等因素对二氯二氢硅转化率的影响。结果表明,当二氯二氢硅进料量为800 kg/h时,反歧化工艺操作的最佳工艺参数为:四氯化硅与二氯二氢硅的量之比为2∶1、塔釜温度90.5℃、反应床层温度78℃、塔顶温度48.5℃、塔顶压力为(85±0.5)k Pa、回流量为7 000 kg/h;此时,二氯二氢硅转化率可达95.4%。
The study investigated the process of trichlorosilane by treating dichlorosilane in anti- disproportionation distillation via special catalyst. Effects of ratio,temperature,pressure and flow on the conversion rate of dichlorosilane were studied. Results indicated the optimal conditions are at a feed rate of 800 kg / h dichlorosilane with the mole ratio of silicon tetrachloride and dichlorosilane at 2： 1 under 90. 5℃ at a reaction bed temperature of 78℃,overhead temperature of 48. 5℃,column top pressure of（ 85 ± 0. 5） k Pa,and reflex load of 7 000 kg / h. Thus the conversion rate of dichlorosilane reached 95. 4%.
出处
《有机硅材料》
CAS
2015年第6期483-486,共4页
Silicone Material
关键词
二氯二氢硅
三氯氢硅
四氯化硅
反歧化
dichlorosilane
trichlorosilane
silicon tetrachloride
antidisproportionation
