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通过差示扫描量热法 (DSC)测定了 3种酯化产物的质量定压热容 ,并拟合出所需温度范围内质量定压热容的表达式 .对 3种酯化产物的组成进行了分析 ,并由组成含量的不同说明了 3种酯化产物质量定压热容不同的原因 .把质量定压热容应用于热平衡计算 ,求得了连续酯化反应器的重要设计参数 :循环量和加热器中加热介质的进料量 .对酯化反应器的扩大增容设计具有十分重要的意义
The mass constant pressure heat capacities of the three kinds of esterified products were determined by differential scanning calorimetry (DSC), and the expression of the mass constant pressure heat capacity in the required temperature range was fitted. The composition of the three kinds of esterified products Were analyzed, and the reasons for the difference of the constant pressure heat capacities of the three kinds of esterified products were explained by the differences of the compositional contents. The mass constant pressure heat capacity was applied to the heat balance calculation, and the important design parameters of the continuous esterification reactor were obtained: The amount of heating medium in the heater and the amount of feed on the esterification reactor expansion and capacity design is of great significance