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低溫SNCR脫硝設備適用于無法滿足脫硝溫度工況

20

发表时间：2020-08-18 08:40

工藝原理

低溫脫硝工藝是我公司根據目前煙氣治理的環保要求、針對特定鍋爐開發的一種新型脫硝工藝。

煙氣經除塵器去除絕大多數顆粒物後進入脫硫脫硝塔，脫硝塔采用噴淋塔的形式，在脫硫脫硝內設置高效霧化雙流體噴槍；正常運行時在噴射液內投加脫硝還原劑，在脫硝島中，脫硝還原劑有選擇性的將煙氣中的NO還原爲NO₂，然後煙氣進入後繼的濕法脫硫塔（脫硫可采用現有濕法脫硫的任何形式），在脫硫脫硝塔中發生下列爲主的反應：

煙氣中的NOx以亞硝酸鹽或者硝酸鹽的形式存在于脫硫循環液中，最終視脫硫方式的不同以廢渣或廢水的形式排出系統。

低溫脫硝針對性強，只與煙氣中的NO反應而基本不與SO₂反應，能夠實現脫硝、脫硫的分步進行，並不影響後繼的脫硫工藝，在保證了脫硝去除率的同時降低了運行費用。

脱硫2.jpg 脱硝泵站.jpg 电厂脱硝.jpg

上一篇汙染日益嚴重治理只會加法不會減法

下一篇低溫scr脫硝設備對煙氣要求較高

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