Optimal reaction conditions for pyridine synthesis in riser reactor

doi:10.1016/j.cjche.2018.01.020

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (7): 1499-1507.DOI: 10.1016/j.cjche.2018.01.020

• Catalysis, kinetics and reaction engineering • Previous Articles Next Articles

Optimal reaction conditions for pyridine synthesis in riser reactor

Shuaishuai Zhou¹, Zelong Liu², Xiao Yan¹, Qin Di¹, Mengxi Liu¹, Chunxi Lu¹, Guangzhou Jin²

1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;
2 Department of Chemical Engineering, Beijing Institute of Petro-Chemical Technology, Beijing 102617, China

Received:2017-11-04 Revised:2018-01-30 Online:2018-08-16 Published:2018-07-28
Contact: Chunxi Lu,E-mail addresses:lcx725@sina.com;Guangzhou Jin,E-mail addresses:jinguangzhou@bipt.edu.cn
Supported by:
Supported by the National Basic Research Program of China (973 Program, 2012CB215000).

Optimal reaction conditions for pyridine synthesis in riser reactor

Shuaishuai Zhou¹, Zelong Liu², Xiao Yan¹, Qin Di¹, Mengxi Liu¹, Chunxi Lu¹, Guangzhou Jin²

1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;
2 Department of Chemical Engineering, Beijing Institute of Petro-Chemical Technology, Beijing 102617, China

通讯作者: Chunxi Lu,E-mail addresses:lcx725@sina.com;Guangzhou Jin,E-mail addresses:jinguangzhou@bipt.edu.cn
基金资助:
Supported by the National Basic Research Program of China (973 Program, 2012CB215000).

Abstract

Abstract: Pyridine has been generally synthesized by aldehydes and ammonia in a turbulent fluidized-bed reactor. In this paper, a novel riser reactor was proposed for pyridine synthesis. Experiment result showed that the yield of pyridine and 3-picoline decreased, but the selectivity of pyridine over 3-picoline increased compared to turbulent fluidized-bed reactor. Based on experimental data, a modified kinetic model was used for the determination of optimal operating condition for riser reactor. The optimal operating condition of riser reactor given by this modified model was as follows:The reaction temperature of 755 K, catalyst to feedstock ratio (CTFR) of 87, residence time of 3.8 s and initial acetaldehydes concentration of 0.0029 mol·L^-1 (acetaldehydes to formaldehydes ratio by mole (ATFR) of 0.65 and ammonia to aldehydes ratio by mole (ATAR) of 0.9, water contention of 63wt% (formaldehyde solution)).

Key words: Pyridine synthesis, Riser reactor, Optimal operating condition

摘要： Pyridine has been generally synthesized by aldehydes and ammonia in a turbulent fluidized-bed reactor. In this paper, a novel riser reactor was proposed for pyridine synthesis. Experiment result showed that the yield of pyridine and 3-picoline decreased, but the selectivity of pyridine over 3-picoline increased compared to turbulent fluidized-bed reactor. Based on experimental data, a modified kinetic model was used for the determination of optimal operating condition for riser reactor. The optimal operating condition of riser reactor given by this modified model was as follows:The reaction temperature of 755 K, catalyst to feedstock ratio (CTFR) of 87, residence time of 3.8 s and initial acetaldehydes concentration of 0.0029 mol·L^-1 (acetaldehydes to formaldehydes ratio by mole (ATFR) of 0.65 and ammonia to aldehydes ratio by mole (ATAR) of 0.9, water contention of 63wt% (formaldehyde solution)).

关键词: Pyridine synthesis, Riser reactor, Optimal operating condition

Shuaishuai Zhou, Zelong Liu, Xiao Yan, Qin Di, Mengxi Liu, Chunxi Lu, Guangzhou Jin. Optimal reaction conditions for pyridine synthesis in riser reactor[J]. Chin.J.Chem.Eng., 2018, 26(7): 1499-1507.

Shuaishuai Zhou, Zelong Liu, Xiao Yan, Qin Di, Mengxi Liu, Chunxi Lu, Guangzhou Jin. Optimal reaction conditions for pyridine synthesis in riser reactor[J]. Chinese Journal of Chemical Engineering, 2018, 26(7): 1499-1507.

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Optimal reaction conditions for pyridine synthesis in riser reactor

Optimal reaction conditions for pyridine synthesis in riser reactor

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