【摘要】 为了研究甲醇蒸气在氧气中的爆炸特性,研发一套爆炸实验装置。装置采用注射器直接注入可燃液体的配气方式,加热套加热的方式,根据定容爆炸机理,采用爆破片爆破作为判据。结果表明,甲醇爆炸极限实验值和文献数据对比绝对偏差为0.5%(体积分数),表明装置的可靠性。最大含氧量与爆炸极限是相互对应的。随着温度、压力升高,最大含氧量变低。利用NRTL方程,得到质量分数85%甲醇水溶液的温度和饱和蒸气压的曲线。结合爆炸极限实验压力与温度曲线,得到安全操作区,为工业应用提供安全操作范围和理论依据。更多还原

【Abstract】 To study the explosion characteristics of methanol vapor in oxygen,a set of explosion experimental device is developed. The flammable liquid is injected into equipment directly. Heating jacket is adopted. According to the constant volume explosion mechanism,rupture disk is used as a criterion of the explosion. The results show that the absolute error of explosion limit between the experimental results and the literature data of methyl alcohol is less than 0. 5vol%,which indicates the accuracy of device. The maximum oxygen content( MOL) and the explosion limit are corresponding to each other. As the temperature and pressure rise,the MOL are shifted down. The saturated vapor pressure curve of 85% methanol aqueous solution at different temperature is made by using NRTL equation. Combined with experimental explosion limit curve of pressure and temperature,a safe operation area is obtained,which provides a safe operating range and the theoretical basis for industrial application.更多还原