生物质分析仪

蒸汽 压力 台式

蒸汽压是在密闭容器中，蒸汽与非蒸汽相处于平衡状态时的压力。在给定的温度下，纯液体沸腾时的压力称为蒸气压。蒸气压只与温度有关。纯液体的蒸汽压不取决于容器中液体的数量。蒸汽压力与温度呈指数关系，且总是随温度升高。溶液汽液平衡的研究可以从绝对蒸气压的测量推导出来。汽液平衡(VLE)数据对化学过程的开发和设计至关重要。在静态全压法中，容器中的总成分是通过装载部件的精确体积来确定的。测量是等温的，平衡压力是测量的。对液相和气相中组分的含量进行了迭代计算。 The static total pressure method is a fast and efficient method for determining VLE for binary mixtures with the additional advantage that the apparatus using the static total pressure method can be easily automated. The two systems shown here feature a custom dual vessel system for the accurate determination of the saturation pressure of specialty organic materials as a function of temperature. All the associated head fittings, valves and plumbing, including the pressure transducers, are enclosed in a heated, temperature controlled, aluminum block to minimize temperature gradients and to ensure that the average system temperature closely matches the temperature of the vessels.