Investigation of Pyridine Synthesis in a Fast Fluidized Bed Reactor,Industrial & Engineering Chemistry Research

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Investigation of Pyridine Synthesis in a Fast Fluidized Bed Reactor
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-01-19 00:00:00 , DOI: 10.1021/acs.iecr.7b04456
Shuaishuai Zhou ₁ , Zelong Liu ₂ , Di Qin ₁ , Xiao Yan ₁ , Mengxi Liu ₁ , Chunxi Lu ₁ , Guangzhou Jin ₂

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Pyridine has been generally synthesized by aldehydes and ammonia in a turbulent fluidized bed reactor. In this paper, a fast fluidized bed reactor was proposed for pyridine synthesis. Experiment results show that the yields of pyridine and 3-picoline decrease while the selectivity of pyridine over 3-picoline is increased. A model was proposed to predict the performance of the fast fluidized bed reactor; the average prediction deviation is 6%. The influence of mass transfer, heat transfer, and backmixing of the gas phase is represented by a modification factor, and the mean value of this modification factor is 0.75 within the experimental operating conditions. By model prediction, the reaction should be terminated when the critical point of R2 is reached to avoid over-reaction. To optimize the pyridine and 3-picoline product yield and minimize coke product yield, the reaction temperature should be kept around 723 K.

中文翻译：

快速流化床反应器中吡啶合成的研究

通常在湍流流化床反应器中由醛和氨合成吡啶。本文提出了一种快速流化床反应器用于吡啶合成。实验结果表明，吡啶和3-甲基吡啶的产率降低，而吡啶对3-甲基吡啶的选择性提高。提出了预测快速流化床反应器性能的模型。平均预测偏差为6％。气相的传质，传热和反混的影响由修正因子表示，在实验操作条件下，该修正因子的平均值为0.75。通过模型预测，应在达到R2的临界点时终止反应，以避免反应过度。

更新日期：2018-01-19

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