论径向分散在冷却固定床反应器行为中的作用:使用钴基催化剂进行费托合成的数值研究

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Christoph Kern, Andreas Jess
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引用次数: 0

摘要

使用二维反应器模型探讨了热量和质量的径向分散对冷却固定床反应器行为的影响。该研究通过有效径向热传导率(λrad)和质量径向分散系数(Drad)来考虑分散问题,并以费托合成为例进行了说明。在中等反应条件下,径向温度曲线仍然相当平缓,即使不考虑质量分散(Drad = 0),质量分散对反应器性能的影响也微乎其微,而热量分散(λrad)始终对反应器行为产生重大影响。尽管如此,要通过反应器模型精确预测热失控,就必须通过现实的 Drad 值将质量弥散纳入其中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

On the Role of Radial Dispersion in the Behavior of a Cooled Fixed-Bed Reactor: Numerical Investigation of Fischer–Tropsch Synthesis with a Cobalt-Based Catalyst

On the Role of Radial Dispersion in the Behavior of a Cooled Fixed-Bed Reactor: Numerical Investigation of Fischer–Tropsch Synthesis with a Cobalt-Based Catalyst

On the Role of Radial Dispersion in the Behavior of a Cooled Fixed-Bed Reactor: Numerical Investigation of Fischer–Tropsch Synthesis with a Cobalt-Based Catalyst

The impact of radial dispersion of both heat and mass on the behavior of cooled fixed-bed reactors was explored using a two-dimensional reactor model. This study accounted for dispersion through an effective radial thermal conductivity (λrad) and a radial dispersion coefficient of mass (Drad), with Fischer–Tropsch synthesis serving as an illustrative process example. Under moderate reaction conditions and hence still rather gentle radial temperature profiles, the effect of mass dispersion on reactor performance was found to be minimal, even if disregarded (Drad = 0), whereas dispersion of heat (λrad) always significantly impacts reactor behavior. Nevertheless, for precise thermal runaway predictions by a reactor model, incorporating mass dispersion by a realistic Drad value is essential.

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来源期刊
Chemical Engineering & Technology
Chemical Engineering & Technology 工程技术-工程:化工
CiteScore
3.80
自引率
4.80%
发文量
315
审稿时长
5.5 months
期刊介绍: This is the journal for chemical engineers looking for first-hand information in all areas of chemical and process engineering. Chemical Engineering & Technology is: Competent with contributions written and refereed by outstanding professionals from around the world. Essential because it is an international forum for the exchange of ideas and experiences. Topical because its articles treat the very latest developments in the field.
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