SCR脱硝分区喷氨取样装置模拟研究及优化

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摘  要：近年来，分区喷氨控制技术广泛应用于燃煤电厂，但其可靠性往往依赖于其测量取样系统的准确性。该文采用数值模拟方法（CFD）对某测量装置取样管进行模拟，提出结构优化方案，优化后实现取样管内流量的均匀分布，最后分析不同取样布置方式对均流取样的影响。

关键词：CFD;分区喷氨;流场优化;分区影响因子;取样管

中图分类号：TK39      文献标志码：A          文章编号：2095-2945（2025）02-0068-04

Abstract： In recent years， the partitioned ammonia injection control technology has been widely applied in coal-fired power plants， but its reliability often depends on the accuracy of its measurement and sampling system. This article uses a numerical simulation method CFD to simulate the sampling tube of a measuring device， proposes a structural optimization scheme， and achieves uniform distribution of flow inside the sampling tube after optimization. Finally， the influence of different sampling arrangements on uniform flow sampling is analyzed.

Keywords： CFD; zoning ammonia injection; flow field optimization; zoning influence factor; sampling tube

选择性催化还原（SCR） 烟气脱硝技术以其运行可靠、脱硝效率高等优势被广泛应用于国内燃煤电厂，目前在运火电厂已经基本完成了SCR脱硝改造[1-3]。（剩余3005字）