乙炔氢氯化的无汞催化反应动力学研究

Kinetic study of hydrochlorination of acetylene on non-mercury catalyst

以氯化氢和乙炔为主要原料,对无汞催化剂上氢氯化合成氯乙烯的反应进行动力学研究。采用Langmuir吸附等温方程导出乙炔氢氯化反应无汞催化剂的动力学方程为:-rA=k KApApH/1+KApA+KVpV,考察乙炔空速、n(HCl)∶n(C2H2)和反应温度对乙炔氢氯化反应速率的影响。结果表明,在反应温度423 K、乙炔空速60 h-1和n(HCl)∶n(C2H2)=1.08∶1条件下,乙炔转化率达98.28%,与高汞或低汞催化剂相当。

Using acetylene and hydrogen chloride as the main raw materials, the kinetic researches on hydrochlorination of acetylene on non-mercury catalyst were studied. By adopting Langmuir＇ s absorbing isotherm equation, the kinetic equation for hydrochlorination of acetylene was deduced as follows ：-τA=kKApAPH/1＋KAPA＋KVPV~ The influence of reaction temperatures, acetylene space velocity and molar ratio of raw materials on the reaction rate for hydrochlorination of acetylene was investigated. The results showed that the optimum reaction condition was as follows： reaction temperature 423 K, acetylene space velocity 60 h ^- 1, and n （ HC1 ） ： n （ C2 H2 ） = 1.08： 1. Under the optimum reaction condition, acetylene conversion was 98.28% ,which was approximately equal to that on high-mercury catalyst or low-mercury catalyst.