醋酸乙烯反应装置参数灵敏性研究

Study on the reaction of acetylene and acetic acid by the method of parametrical sensitivity

在化工工业中,探索化工装置的安全生产条件具有重大的实际意义。采用参数灵敏性的方法研究放热反应的热失控问题得到了广泛的关注。对于强放热的反应,要确保温度在安全范围内,以防装置中温度过高或者压力过大发生危险。本文以醋酸和乙炔反应的装置为例,利用已知的条件建立模型研究反应的灵敏度和热失控问题。分析了输入条件(进料温度、传热、气体流速、进料摩尔比、初始压力)对反应物转化率、温度灵敏度及反应器内温度分布的影响。研究结果表明,在乙炔和醋酸反应装置中进料温度、传热及总压是影响转化率和温度的主要因素并得出了相应输入参数的临界值。

In the chemical industry,it is meaningful to search for the safe productive conditions for the chemical equipment.It attracts extensive attention to study runaway problem of the exothermal reaction using parametric sensitivity method.For exothermal reaction,we must control the temperature in one specific region to avoid the dan ger because of high temperature and pressure.In this essay,we instance the reaction equipment of acetylene and acetic acid.We make a mode by all the conditions we have known to study on the sensitivity and runaway problem.We analysis the effect of input conditions（the temperature of the feedstock、heat transfer、gas flow rate、initial reactant mol ratios、initial pressure） on the reactant conversition rate,tempareture sensitivity and the temperature along the reactor.The search result shows that feed temperature,overall coefficient of heat transfer and total pressure are main parameters which effect the reactant conversition rate and temperature in the reaction equipment of acetylene and acetic acid.And we got the critical values of the initial parameters respectively.