SCR脫硝分區(qū)噴氨取樣裝置模擬研究及優(yōu)化

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摘  要：近年來(lái)，分區(qū)噴氨控制技術(shù)廣泛應(yīng)用于燃煤電廠，但其可靠性往往依賴(lài)于其測(cè)量取樣系統(tǒng)的準(zhǔn)確性。該文采用數(shù)值模擬方法（CFD）對(duì)某測(cè)量裝置取樣管進(jìn)行模擬，提出結(jié)構(gòu)優(yōu)化方案，優(yōu)化后實(shí)現(xiàn)取樣管內(nèi)流量的均勻分布，最后分析不同取樣布置方式對(duì)均流取樣的影響。

關(guān)鍵詞：CFD;分區(qū)噴氨;流場(chǎng)優(yōu)化;分區(qū)影響因子;取樣管

中圖分類(lèi)號(hào)：TK39      文獻(xiàn)標(biāo)志碼：A          文章編號(hào)：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

選擇性催化還原（SCR） 煙氣脫硝技術(shù)以其運(yùn)行可靠、脫硝效率高等優(yōu)勢(shì)被廣泛應(yīng)用于國(guó)內(nèi)燃煤電廠，目前在運(yùn)火電廠已經(jīng)基本完成了SCR脫硝改造[1-3]。（剩余3005字）