环己烷超临界裂解性能分析

Analysis of Pyrolysis Property of Cyclohexane under Supercritical Conditions

详细研究了超临界条件下环己烷的热裂解性能,其中气相产物采用气相色谱分析,液相产物通过气相色谱-质谱联用仪进行分析,主要裂解产物为甲烷、乙烷、乙烯、丙烷、丙烯、丁烯、己烯、环己烯和苯等。研究发现,温度、压力和流体的湍动程度显著影响裂解反应,裂解转化率和裂解深度随温度升高均增加,压力和流体的湍动程度对裂解的影响是通过改变停留时间产生的。根据液相产物的主要成分,推测了可能的裂解过程。

The pyrolysis behavior of cyclohexane under supercritical conditions was investigated.The main products of the pyrolysis process were methane,ethane,ethene,propane,propene,butane,hexene,cyclohexene and benzene etc.The distributions of gas products and liquid products were analyzed by GC and GC/MS,respectively.The results showed that the cracking reaction was affected mainly by temperature,pressure and Reynold＇s number.Temperature was an advantage factor to the pyrolysis of cyclohexane and the contents of products increased as rising the temperature.The pressure and Reynold＇s number have effect on pyrolysis process through changing reaction time of cyclyohexane.A probable mechanism of the pyrolysis of cyclohexane was proposed according to the main components of liquid products.