文献类型：期刊文献

英文题名：Study on effective radial thermal conductivity of gas flow through a methanol reactor

作者：Lei, Kun[1]; Ma, Hongfang[1]; Zhang, Haitao[1]; Ying, Weiyong[1]; Fang, Dingye[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Ministry of Education, Shanghai, 200237, China

年份：2015

卷号：13

期号：1

起止页码：103

外文期刊名：International Journal of Chemical Reactor Engineering

收录：EI(收录号：20151200652581)

语种：英文

外文关键词：Heat conduction - Heat transfer coefficients - Methanol - Synthesis gas manufacture - Heat convection - Flow of gases - Reynolds number

摘要：The heat conduction performance of the methanol synthesis reactor is significant for the development of large-scale methanol production. The present work has measured the temperature distribution in the fixed bed at air volumetric flow rate 2.4-7 m3 · h-1, inlet air temperature 160-200°C and heating tube temperature 210-270°C. The effective radial thermal conductivity and effective wall heat transfer coefficient were derived based on the steady-state measurements and the two-dimensional heat transfer model. A correlation was proposed based on the experimental data, which related well the Nusselt number and the effective radial thermal conductivity to the particle Reynolds number ranging from 59.2 to 175.8. The heat transfer model combined with the correlation was used to calculate the temperature profiles. A comparison with the predicated temperature and the measurements was illustrated and the results showed that the predication agreed very well with the experimental results. All the absolute values of the relative errors were less than 10%, and the model was verified by experiments. Comparing the correlations of both this work with previously published showed that there are considerable discrepancies among them due to different experimental conditions. The influence of the particle Reynolds number on the temperature distribution inside the bed was also discussed and it was shown that improving particle Reynolds number contributed to enhance heat transfer in the fixed bed. ? 2015 by De Gruyter 2015.