Stability Analysis of Gas–Solid Distribution through Nonidentical Parallel Paths,Industrial & Engineering Chemistry Research

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Stability Analysis of Gas–Solid Distribution through Nonidentical Parallel Paths
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-25 , DOI: 10.1021/acs.iecr.9b06581
Chenxi Zhang ₁ , Qi Xu ₂ , Abdennour Bourane ₂ , Musaed Ghrami ₂ , Ibrahim Abba ₂ , Fei Wei ₁

Affiliation

Gas–solid fluidized beds in parallel can share some common units yet couple different reactions without extra pressure drop. The bottleneck, however, in such a parallel system, especially with nonidentical paths, is to ensure the stability of desirable gas–solid distribution. After the nonidentity index is defined, a framework to detect the instability of gas–solid distribution through a nonidentical parallel system is established via linear stability analysis. Besides, experimental studies are carried out on an asymmetric dual downer pilot plant, where two catalytic cracking reactors share one regenerator, to verify the theoretical analysis. The Matthew effect phenomenon of solid circulation rate fluctuations is reported, i.e., the path with a high solid circulation rate easily obtains positive fluctuation, while the path with a low solid circulation rate prefers negative fluctuation.

中文翻译：

通过不同平行路径进行气固分布的稳定性分析

平行的气固流化床可以共享一些公用的单元，但可以在不增加压力降的情况下耦合不同的反应。但是，在这样的并行系统中，尤其是在路径不相同的情况下，瓶颈是要确保理想的气固分布的稳定性。定义完非同一性指标后，通过线性稳定性分析，建立了一个通过非相同并行系统检测气固分布不稳定性的框架。此外，在一个不对称的双重下降实验工厂中进行了实验研究，其中两个催化裂化反应器共用一个再生器，以验证理论分析。报告了固体循环速率波动的马修效应现象，即，固体循环速率高的路径容易获得正波动，

更新日期：2020-03-26

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