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以乙炔和氯化氢为主要原料,对在低汞催化剂上氢氯化合成氯乙烯的反应进行动力学研究,以此获悉自制的低汞催化剂对电石乙炔法合成氯乙烯的催化性能。采用Langmuir吸附等温线方程导出乙炔氢氯化反应低汞催化剂的动力学方程为rA=kKApApB/(1+KApA+KCpC),并考察反应温度、乙炔空速和原料物质的量比对乙炔氢氯化反应速率的影响。结果表明,在反应温度170 ℃、乙炔空速28 h-1和n(C2H2)∶n(HCl)=1∶1.075条件下,乙炔转化率达98.92%,与高汞催化剂相当。 相似文献
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The synthesis of vinyl chloride is the key of polyvinyl chloride production.There are two main methods for synthesis of vinyl chloride:hydrochlorination of acetylene and oxychlorination of ethylene.The synthesis process of vinyl chloride from acetylene hydrochlorination was introduced in this paper.The research progress in novel low-mercury and mercury-free catalysts at home and abroad was reviewed.The development prospects of the catalyst for synthesis of vinyl chloride from acetylene were also outlined. 相似文献
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