Optimal reaction conditions for pyridine synthesis in riser reactor

作     者：Shuaishuai Zhou Zelong Liu Xiao Yan Qin Di Mengxi Liu Chunxi Lu Guangzhou Jin 

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing 102249China Department of Chemical Engineering Beijing Institute of Petro-Chemical TechnologyBeijing 102617China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2018年第26卷第7期

页      面：1499-1507页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

基　　金：Supported by the National Basic Research Program of China(973 Program 2012CB215000) 

主　　题：Pyridine synthesis Riser reactor Optimal operating condition 

摘      要：Pjridine 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 timeof3.8sandinitialacetaldehydesconcentrationof0.0029mol.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））.