文献类型：期刊文献

英文题名：Thermal management of natural gas production from coke oven gas by optimizing catalyst distribution and operation conditions

作者：Shi, Yao[1];Li, Hongyu[1];Chen, Hao[1];Zhao, Yiquan[1];Cao, Yueqiang[1];Liu, Xiaowei[2];Duan, Xuezhi[1];Qian, Gang[1];Zhou, Xinggui[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]King Abdullah Univ Sci & Technol KAUST, Adv Membranes & Porous Mat Ctr, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia

年份：2023

卷号：327

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20231413852431);WOS:【SCI-EXPANDED(收录号:WOS:000963163700001)】；

基金：Acknowledgements This work was supported by the National Key Research and Devel-opment Program of China (2018YFB0604500) and the National Natural Science Foundation of China (21922803) .

语种：英文

外文关键词：CO methanation; Structure-resolved CFD simulation; Hot spot temperature; Gradient rise distribution

摘要：In this work, 3D particle-resolved CFD simulations have been performed to investigate the thermal effects of natural gas production from coke oven gas. The catalyst packing structures with uniform, gradient rise and gradient descent distribution and the operating conditions of pressure, wall temperature, inlet temperature and feed velocity are optimized for reduced hot spot temperature. The simulation results show that compared with packing structures with uniform distribution and gradient descent distribution, the gradient rise distribution could effectively reduce the hot spot temperature without affecting the reactor performance in the reactor with upflow reactants feeding, of which the reactor bed temperature rise is 37 K. Under the conditions with the pressure of 20 bar, wall temperature of 500 K, inlet temperature of 593 K, inlet flow rate of 0.04 m/s, the packing structure with gradient rise distribution exhibits the minimum reactor bed temperature rise of 19 K. By optimizing the catalyst distribution and operation conditions, the hot spot temperature of CO methanation process could be dramatically reduced by 49 K at the sacrifice of slightly reduced CO conversion.