摘要：CO2 methanation suffers from the problem of temperature runaway phenomenon due to its exothermic nature. To mitigate this issue, optimizing catalyst structure becomes crucial. This work established numerical models to investigate the CO2 methanation reaction and heat/mass transfer process in the reactor with porous pellet and monolithic catalysts. Results show that the reactor with porous pellets has the lowest carbon conversion per unit pressure drop due to its large total pressure drop. In contrast, the reactor with monolith exhibits a much larger carbon conversion per unit pressure drop but a smaller absolute carbon conversion. Based on this, an improved "CHESS" monolith structure was proposed and improved, which not only maintains a high absolute carbon conversion (62.6 %) but also enhances the heat transfer process in CO2 methanation. Moreover, compared with the reactor with porous pellets, the maximum temperature in the improved "CHESS" monolith was decreased by around 11.09 %.

关键字：Heat transfer; Porous pellet; Monolith; "CHESS" monolith

ISSN号：1359-4311

卷、期、页：卷: 236子辑: D

发表日期：2024-01-10

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：APPLIED THERMAL ENGINEERING

参与作者：Lin, Yixiong,Li, Tailin,Norinaga, Koyo

第一作者：张炜,张玉明,李家州,陈哲文

论文类型：期刊论文

论文概要：张炜,Lin, Yixiong,张玉明,Li, Tailin,李家州,陈哲文,Norinaga, Koyo，Regulation of temperature distribution in fixed bed reactor for CO2 methanation through "CHESS" monolith structure catalyst，APPLIED THERMAL ENGINEERING，2024，卷: 236子辑: D

论文题目：Regulation of temperature distribution in fixed bed reactor for CO2 methanation through "CHESS" monolith structure catalyst