【摘 要】
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The discrepancy between pseudo-homogeneous one-dimensional model and pseudo-homogeneous two-dimensional model is studied.It is found that there are great diffe
【出 处】
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Chinese Journal of Chemical Engineering
论文部分内容阅读
The discrepancy between pseudo-homogeneous one-dimensional model and pseudo-homogeneous two-dimensional model is studied.It is found that there are great differences betweentwo models.This paper compares the maximum and minimum values of the radial temperaturein the hot spot in case that a single exothermic reaction is carried out,a correlation is obtainedwith pseudo-homogeneous one-dimensional model to describe the entire reactor behavior.A newrunaway criterion,based on the occurrence of inflection in the hot spot locus,is developed for thecase of pseudo-homogeneous two-dimensional model.This criterion predicts the maximum allowabletemperature for safe operation and the regions of runaway respectively,The calculated results showthat,compared with the results based on pseudo-homogeneous one-dimensional model,runaway willeasily occur when the radial temperature gradient has to be considered.
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