Visualization of emergency viscous two-phase venting behaviors

Industrial Loop Reactor for Catalytic Propylene Polymerization: Dynamic Modeling of Emergency Accidents

“…A fast rise of the reactor temperature and pressure could lead to reactor breakage and consequent release of toxic/flammable fluids. − In reality, despite numerous safety precautions, accidents are typically due to unexpected failures of heat removal, originating from operating errors or equipment failure (namely, emergency accidents). Therefore, calculation of accident relief flow is necessary. − In addition, such calculations are based on the quantitative description of the pressure change in the reactors and could be useful for controlling product properties and achieving safe production in reactors. Moreover, a dynamic model is useful for checking the performance of pressure-relief devices in response to emergency accidents.…”

“…Although their model was a distributed model and could predict some variable distributions in the loop reactor, no reactor pressure data were included in their work. In addition, when considering the safety of the reactors and the corresponding calculation of accident relief flow in response to emergency accidents, one needs the concentrated/whole pressure instead of the distributed pressure in the reactor. − In practice, the distributed model is more complicated and requires more input parameters to solve than the concentrated model. Asteasuain and Brandolin simulated a high-pressure ethylene polymerization reactor .…”

“…Therefore, calculation of accident relief flow is necessary. [10][11][12][13] In addition, such calculations are based on the quantitative description of the pressure change in the reactors and could be useful for controlling product properties and achieving safe production in reactors. Moreover, a dynamic model is useful for checking the performance of pressure-relief devices in response to emergency accidents.…”