DNTF氧化反应紧急排放系统模拟研究

Simulation on DNTF oxidation reaction emergency discharge system

对DNTF合成氧化反应紧急排放系统进行了的模拟和设计。将反应体系的物料衡算和容器流量模型、放空流量模型结合起来,并根据氧化反应热失控特点,计算出反应器在热失控条件下紧急排放最小泄放面积为0.001 26m2,才能保证泄放压力低于反应器设计压力0.6 MPa。通过用模拟方法来研究失控及泄放的整个过程,并从理论上给出了氧化反应过程失控条件下反应压力随时间的变化关系;同时对安全泄放系统进行了评估,考察和分析反应器的不同泄放面积对热失控温度和压力变化关系,以确定要保证工艺安全的最小泄放面积,为DNTF合成反应器的设计和生产工艺的安全可靠性提供重要的理论依据,具有十分重要的意义。

The emergency discharge system of DNTF synthetic oxidation reaction was simulated and designed. By combining the material balance of the reaction system, container flow model and vent flow model, and based on the features of oxidation reaction thermal runaway, it was calculated that only if the minimum reactor emergency discharge area of the thermal runaway conditions was 0.00 126 m2, the discharge pressure could be ensured to be lower than the reactor design pressure of 0.6 MPa. By using the simulation method to study the whole process of runaway and relief, the reactive pressure versus time was presented theoretically under the condition the oxidation process out of control, followed by an assessment of the safety relief system. In order to determine the minimum discharge area that ensures the process safety, the influence of different relief areas on the reactor temperature and pressure in ease of thermal runaway was studied and analyzed, thus providing the important theoretical basis for the design of DNTF synthesis reactor and the safety and reliability of the production process, which has a great significance.