硅酸盐通报2025，Vol.44Issue(5)：1612-1621,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1024
水泥窑炉SCR脱硝反应塔流场优化的数值模拟研究
Numerical Simulation of Flow Field Optimization in SCR Denitrification Reactor of Cement Kiln
摘要
Abstract
Selective catalytic reduction(SCR)denitrification is an urgent need for deep emission reduction of flue gas NOx in cement kiln.In this paper,the SCR denitrification reactor of a cement kiln with a flue gas treatment capacity of 10 000 Nm3/h was taken as the research object,and the computational fluid dynamics(CFD)numerical simulation was used to analyze and compare the different distribution modes of the reactor inlet,and the flow field optimization method in the reactor was discussed.The results show that the reasonable installation of guide plate in the middle and gradual expansion section of the reactor flue inlet,and the installation of porous uniform distribution plate at the top entrance of the reactor have excellent flow field homogenization effect.The installation of porous uniform distribution plate plays an important role.Through the optimal combination of the homogeneous distribution device,the relative standard deviation Cv of the velocity above the top layer catalyst bed in the reactor reaches 8.45％,the maximum incidence angle is 9.53°,and the overall resistance of the system increases by only 37 Pa.Furthermore,when the reserved layer of the catalyst bed is placed in the top-level design can obtain the better optimal effect of flow field,and Cv of speed can be reduced to 6.73％.This paper is expected to provide reference for further optimization design of SCR denitrification reactor of cement kiln.关键词
水泥窑炉/SCR脱硝/反应塔/流场优化/数值模拟Key words
cement kiln/SCR denitrification/reactor/flow field optimization/numerical simulation分类
化学工程引用本文复制引用
王昕,张金山,郑旭,杜勇,刘晨,潘美晨,汪澜..水泥窑炉SCR脱硝反应塔流场优化的数值模拟研究[J].硅酸盐通报,2025,44(5):1612-1621,10.基金项目
国家重点研发计划(2021YFB350060) （2021YFB350060）
