Gas solid contact efficiency of pyridine synthesis reactors,The Canadian Journal of Chemical Engineering

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Gas solid contact efficiency of pyridine synthesis reactors
The Canadian Journal of Chemical Engineering ( IF 1.6 ) Pub Date : 2020-12-15 , DOI: 10.1002/cjce.23985
Shuaishuai Zhou ₁ , Congzhen Qiao ₁ , Hao Yang ₁ , Chunxi Lu ₂ , Mengxi Liu ₂

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The gas phase pyridine synthesis process is usually carried out in a fluidized bed reactor. The contact efficiency between the reactants and the catalysts has great influence on the reactor performance. In this paper, three fluidized bed reactors with different flow patterns were used to investigate the contact efficiency. The superficial contact efficiency index (SCEI) was defined and used in this paper to quantify the contact efficiency inside these reactors. To obtain the values of the SCEI, the ideal reactor model was constructed. The results showed that the SCEI average value decreased as the flow pattern shifted from fast fluidization to bubbling fluidization; these values were 0.86, 0.55, and 0.19 for the fast fluidized bed reactor, turbulent fluidized bed reactor, and bubbling fluidized bed reactor, respectively. An empirical correlation was proposed in this paper to predict the SCEI under different operating conditions. The model prediction results agreed well with experimental results with an average prediction error of 8%.

中文翻译：

吡啶合成反应器的气固接触效率

气相吡啶合成方法通常在流化床反应器中进行。反应物和催化剂之间的接触效率对反应器性能有很大影响。在本文中，使用三个具有不同流型的流化床反应器来研究接触效率。定义了表面接触效率指数（SCEI），并将其用于量化这些反应器内部的接触效率。为了获得SCEI的值，构建了理想的反应堆模型。结果表明，当流态由快速流态化变为鼓泡流态时，SCEI平均值降低。对于快速流化床反应器，湍流流化床反应器和鼓泡流化床反应器，这些值分别为0.86、0.55和0.19。本文提出了一种经验相关性来预测不同工况下的SCEI。模型预测结果与实验结果吻合良好，平均预测误差为8％。

更新日期：2021-02-15

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