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首页> 外文会议>3rd International Symposium on Runaway Reactions, Pressure Relief Design, and Effluent Handling >Venting of a Runaway Organic Peroxide Decomposition in Viscous Solvents on Pilot-Scale
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Venting of a Runaway Organic Peroxide Decomposition in Viscous Solvents on Pilot-Scale

机译：中试规模的粘性溶剂中失控有机过氧化物分解的排放

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Polymerisation reactors are widely used in the chemical industry and runaway reactions continue to occur in them. Those of greatest concern include highly viscous multiphase mixtures. Considerable uncertainties exist in the design of emergency pressure relief systems for such reactors, as there is very limited experimental data available on the flow of such fluids in relief systems.rnVenting experiments are reported here that have been carried out in a 350 litre pilot-scale reactor for the runaway decomposition of an organic peroxide in xylene solvent, with batch volumes of 150 and 200 litres and with a range of concentrations of polystyrene dissolved in the xylene to modify the viscosity. Measurements were made, as a function of time, of pressure in the reactor, vent line and catch tank; temperature at different levels in the reactor and in the vent line and catch tank; viscosity in the reactor; mass in the catch tank; and two-phase density in the vent line.rnAnalysis of the results shows that the venting behaviour of a high viscosity reaction system is complex. There is no simple relationship between maximum pressure and viscosity. The results indicate that the flow regime in the reactor is influenced by the fluid viscosity and that this is of primary importance in explaining the effects on maximum pressure. A comparison of the experimental results with the results of a simple approximate vent sizing method recommended by DIERS showed significant differences between the experimental and calculated maximum reactor pressures.
机译：聚合反应器广泛用于化学工业，并且失控反应继续在其中发生。最令人关注的是高粘度多相混合物。在此类反应堆的应急泄压系统的设计中存在很大的不确定性，因为关于泄压系统中此类流体的流动的实验数据非常有限。此处报道了在350升中试规模上进行的排气实验。用于在二甲苯溶剂中失控分解有机过氧化物的反应器，分批体积为150和200升，并且在二甲苯中溶解了一定浓度的聚苯乙烯，以改变粘度。作为时间的函数，对反应器，排气管和收集罐中的压力进行了测量。反应器，排气管路和收集罐中不同温度的温度；反应器中的粘度；收集池中的质量；结果分析表明，高粘度反应体系的排气行为很复杂。最大压力和粘度之间没有简单的关系。结果表明，反应器中的流态受流体粘度的影响，这对于解释对最大压力的影响至关重要。将实验结果与DIERS推荐的简单近似通风口定径方法的结果进行比较，发现实验压力和计算出的最大反应堆压力之间存在显着差异。

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