Temperature Patterns on Catalytic Pellets and Radial Flow Reactor.

将对单一、三维、催化球团和径向流动反应器中时空温度分布的演变、选择、稳定性和影响进行协调的实验和理论研究。在定制的连续流搅拌釜式反应器中，将使用红外热像仪测量圆柱形颗粒顶部和侧面的温度分布。这项研究将确定可能的模式，它们对操作条件的依赖，以及颗粒间传输限制和颗粒大小的影响。模型反应包括一氧化碳在钯催化剂上的氧化和氢在镍催化剂上的氧化。径向流动反应堆中的实验将提供有关可能演变的温度模式类型的信息。这些信息可用于制定控制策略。这项研究还将提供导致热点形成的条件的信息，热点事件可能会导致商业反应堆的严重安全问题。这些信息对于合理制定操作和控制政策以规避其危险形成是必要的。将进行理论和计算研究，以模拟实验系统，并帮助找到最佳运行区域。

A coordinated experimental and theoretical study of the evolution, selection, stability, and impact of spatiotemporal temperature pattern formation on single, three-dimensional, catalytic pellets and in radial-flow reactors will be carried out. An infrared thermal imager will be used to measure the temperature patterns on the top and sides of cylindrical pellets in a custom-built continuous flow stirred tank reactor. The study will determine the possible patterns, their dependence on operating conditions, and the influence of interparticle transport limitations and pellet size. Model reactions include the oxidation of carbon monoxide on palladium catalysts and the oxidation of hydrogen on a nickel catalyst. Experiments in a radial-flow reactor will provide information about the types of temperature patterns that may evolve. This information can be used to develop control strategies. The study will also provide information about the conditions leading to the formation of hot spots, an event which may lead to severe safety problems in commercial reactors. This information is needed for the rational development of operation and control policies that circumvent their hazardous formation. Theoretical and computational studies will be conducted to simulate the experimental systems and to help find optimal regions of operation.