Selectivity of Partial Oxidation Reactions and Reactors

摘要-施密特氧化反应很难管理，因为在大多数情况下，它们表现出表面反应、传质、热传递和均相反应之间的复杂相互作用。这些因素在反应器内的温度变化、流动模式、多个稳态和反应选择性方面产生了复杂的实验行为。据估计，所有工业催化过程中有一半是氧化反应，这在实验室条件下很难表征。如果这是通过降低压力和温度来获得速率和选择性，而不受热、质传递和均相反应的干扰，那么结果可能与常压工业反应堆几乎没有相关性。主要研究人员计划进行一项实验和模拟方案，以确定催化氧化反应和反应器在某些情况下的特征，这将有助于设计部分氧化化学合成和完全氧化减少污染的新构型。他们将考虑新的反应器几何结构，旨在操纵流动模式和停留时间，以调整热、质传递和接触，以实现对所需产品的最大选择性。各种类型的催化整体和流态化床将被用来在绝热反应器中实现非常高的传质和热传递速率和非常短的停留时间，从而使中间体的产量达到最大。反应堆将以绝热方式运行，以允许反应热确定反应堆温度，并更紧密地控制工业反应堆。还将检查分段整体，以确定如何利用反应堆位置的系统变化来控制性能。催化剂的几何形状、流动条件和温度将被改变，从而可以在这些性质上实现很大的变化。N 7‘SPL152FTMP n 7’SPL1671 TMP n 7抽象-施密特氧化反应很难管理，因为在大多数情况下，它们表现出复杂的相互作用b++！！！D++(Times New Roman符号&amp；Arial“h E R/Maria K.Burka Maria K.Burka

Abstract - Schmidt Oxidation reactions are difficult to manage because in most situations they exhibit a complex interplay between surface reactions, mass transfer, heat transfer, and homogeneous reaction. These factors produce complicated experimental behavior in terms of temperature variations across the reactor, flow patterns, multiple steady states, and reaction selectivity. It has been estimated that one-half of all industrial catalytic processes are oxidation reaction which are difficult to characterize under laboratory conditions. If this is done by lowering pressures and temperatures to obtain rates and selectivities without interference from heat and mass transfer and homogeneous reaction, then the results may have little relevance to an atmospheric pressure industrial reactor. The principal investigators plan an experimental and modeling program to characterize catalytic oxidation reactions and reactors in situations which would be useful in designing new configurations for chemical synthesis by partial oxidation and for pollution abatement by total oxidation. They will consider novel reactor geometries designed to manipulate flow patterns and residence times to adjust heat and mass transfer and contacting in order to attain maximum selectivity to a desired product. Various types of catalytic monoliths and also fluidized beds will be used to achieve very high mass and heat transfer rates and very short residence times in adiabatic reactors so that the yields of intermediates can be maximized. Reactors will be operated adiabatically to allow reaction heat to determine reactor temperature and to si mulate industrial reactors more closely. Staged monoliths will also be examined to determine how systematic variations in reactor with position can be used to control performance. Catalyst geometries, flow conditions, and temperatures will be altered such that wide variations in these properties can be attained. n 7 ÕSPL152FTMP n 7 ÕSPL1671TMP n 7 Abstract - Schmidt Oxidation reactions are difficult to manage because in most situations they exhibit a complex interplay b + + ! ! ! D + + ( Times New Roman Symbol & Arial " h E E E R / Maria K. Burka Maria K. Burka