密闭容器内失控反应超压的数学建模及其在压力泄放中的应用

发布时间：2018-04-15 15:32

本文选题：泄放计算 + 数学模型　；参考：《化工学报》2017年11期

【摘要】：安全泄放是在失控条件下降低反应体系风险最为经济有效的技术措施之一。研究压力的数学模型既可以为泄放计算提供必要的参数,又可以让工程师深入了解样品在容器内的压力变化情况,设计出更可靠的泄放系统,并且在减少实验量的同时,还可以计算不同装载率下的泄放面积。以20%DTBP(过氧化二叔丁基)的ARC(加速度量热仪)测试为标准,结合理论推导得到了绝热条件下密闭容器中失控反应超压的数学模型,并将绝热修正后的压力测试曲线与模型模拟的压力曲线对比,验证了模型的正确性。最后,将模型的压力模拟数据应用于20%DTBP的泄放计算中,结合Leung方法,得到了不同装载率下的泄放面积,发现在装载率为20%时,泄放面积达到最大为0.0035m2。研究结果表明建立的压力数学模型是正确可靠的,并且该模型能较好地应用于压力泄放的计算中。
[Abstract]:Safe release is one of the most economical and effective measures to reduce the risk of reaction system under runaway conditions.The mathematical model of pressure study can not only provide necessary parameters for discharge calculation, but also allow engineers to deeply understand the pressure variation of samples in the vessel, design a more reliable discharge system, and at the same time reduce the amount of experiments.The discharge area under different loading rates can also be calculated.Based on the ARC (acceleration calorimeter) test of 20 DTBP (second Tertiary Ding Ji), the mathematical model of out-of-control reaction overpressure in a closed vessel under adiabatic condition is derived in combination with the theory.The correctness of the model is verified by comparing the revised pressure test curve with the pressure curve simulated by the model.Finally, the pressure simulation data of the model are applied to the discharge calculation of 20%DTBP. Combined with the Leung method, the discharge area under different loading rates is obtained. It is found that the maximum discharge area is 0.0035 m2 when the loading rate is 20.The results show that the established mathematical model is correct and reliable, and the model can be applied to the calculation of pressure release.
【作者单位】：南京理工大学化工学院;索尔维投资有限公司(中国);
【分类号】：X933

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