文献类型：期刊文献

英文题名：Influence of tubular reactor structure and operating conditions on dry reforming of methane

作者：Wang, Hailang[1];Duan, Xuezhi[1];Liu, Xinlei[1];Ye, Guanghua[1];Gu, Xiongyi[1];Zhu, Kake[1];Zhou, Xinggui[1];Yuan, Weikang[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：139

起止页码：39

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000449891700005)】；

基金：This work was financially supported by the National Natural Science Foundation of China (U1663221 and 21706067), the China Postdoctoral Science Foundation (2018T110358), the "Chenguang Program" supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (17CG29), and the Fundamental Research Funds for the Central Universities (222201714004 and 222201718003).

语种：英文

外文关键词：Ilibular reactor; Reactor structure; Dry reforming of methane; Operating condition; Cold spot; Two-dimensional reactor model

摘要：This paper investigates the influence of reactor structure and operating conditions on dry reforming of methane (DRM), using a two-dimensional reactor model. Ilmo tubular reactors commonly used in the industry are included: one is a mono-tube reactor, the other contains a concentric heating tube. The reactor structure and operating conditions significantly affect temperature distribution and methane conversion in the two reactors. Catalyst dilution in catalyst beds is efficient to control temperature but also largely decreases methane conversion, indicating a balanced packing density of catalyst is required. Reducing the tube radius is useful to control temperature and can save a lot of (in some cases >90%) catalyst, which demonstrates the great potential of using tubular reactors with a small radius. The inlet temperature only slightly changes temperature distribution and methane conversion. The elevated total pressure reduces temperature gradient and also methane conversion, while the feed CH4 /CO2 ratio only importantly affects the equilibrium conversion of methane. Comparing temperature distributions and methane conversions in the two reactors, the tubular reactor with a concentric heating tube performs better and uses 11-67% less catalyst. These results should serve to guide the design of tubular reactors for DRM and other highly endothermic reactions. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.