Multiple Scales Modelling of Chemistry and Mass Transfer in a SCR Process for Plate-Type Monolithic Catalysts

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Yu, Cong^1 ; Si, Fengqi^1 ; Xiong, Wei^1

School of Energy and Environment, Southeast University, Nanjing, China^1

关键词: Engineering applications;    Flow distribution;    Mass transfer process;    Modelling method;    Monolithic catalysts;    Monolithic plates;    Multi-channel model;    Sherwood numbers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/3/032024/pdf
DOI  :  10.1088/1757-899X/392/3/032024

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The modelling method of chemistry and mass transfer process was studied for plate-type SCR catalysts. Single- and multi-channel scale models were established for a monolithic plate-type SCR reactor, and the simulation results were compared with the experiments over a micro-scale reactor to verify the accuracy. It was found that good agreement are achieved between the results of multi-channel model and the experiments, whereas a lower NOx reduction efficiency and a higher Sherwood number were calculated by single channel model. This illustrates that the symmetric boundary assumptions in single channel model might be not reliable, especially when the flow distribution at the reactor entrance is not uniform. The multi-channel model in consideration of channels interaction is more suitable for engineering applications.