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    煙氣脫硝反應脫硝技術原理

    1、SNCR脫硝是將還原劑（an水）噴入爐內800～1050度區間，在高溫下將氮氧化物還原成氮氣和水， 實現氮氧化物達標排放，脫硝效率大於50%。

    1. SNCR denitration is to inject reducing agent (an water) into the furnace at the temperature range of 800 ~ 1050 ℃, reduce nitrogen oxides into nitrogen and water at high temperature, and realize the discharge of nitrogen oxides up to standard. The denitration efficiency is greater than 50%.
    2、SCR 脫硝是將煙氣在200～400度 溫度下，借助催化劑實現還原反應，將氮氧化物還原成氮氣和水， 實現氮氧化物達標排放，脫硝效率大於90%。
    2. SCR denitration refers to the reduction reaction of flue gas at the temperature of 200 ~ 400 ℃ with the help of catalyst to reduce nitrogen oxides into nitrogen and water, so as to achieve the standard discharge of nitrogen oxides, and the denitration efficiency is greater than 90%.
    3、HNCR脫硝是將還原劑（固體幹粉高分子）噴入爐內700～850度區間，在高溫下將氮氧化物還原成氮氣和水， 實現氮氧化物達標排放，脫硝效率大於80%。
    3. Hncr denitration is to inject reductant (solid dry powder polymer) into the furnace at the temperature range of 700 ~ 850 ℃, reduce nitrogen oxide into nitrogen and water at high temperature, so as to realize the standard discharge of nitrogen oxide, and the denitration efficiency is greater than 80%.
    4、氧化法脫硝，將fei常穩定的NO氧化成NO2，是利用NO2溶於水的特性，通過噴淋吸收，形成硝酸或亞硝酸，再用堿中和，實現將煙氣中的氮氧化物脫除。
    4. Oxidation denitration is to oxidize the normally stable no of Fei into NO2. It is to use the characteristics of NO2 dissolving in water, form nitric acid or nitrite through spray absorption, and then neutralize it with alkali to remove the nitrogen oxides in the flue gas.
    SNCR+SCR 聯合脫硝技術：SNCR/SCR 組合技術是指在煙氣工藝中安裝 SNCR 和 SCR設備。在 SNCR 部分注入液an等作為還原劑，以部分去除 SNCR裝置中的 NOx；在 SCR 段中，通過 SNCR 工藝逸出的an氣在SCR 催化劑 H2O 的作用下將煙道氣中的 NOx還原為 N2。
    Sncr+scr combined denitration technology: sncr/scr combined technology refers to the installation of SNCR and SCR equipment in the flue gas process. Inject liquid an into the SNCR part as reducing agent to partially remove NOx in the SNCR device; In SCR section, an gas escaped from SNCR process reduces NOx in flue gas to N2 under the action of SCR catalyst H2O.
    5、低氮燃燒技術改造，通過煙氣再循環，jiang低煙氣中氧含量，實現折算達標排放。
    5. The transformation of low nitrogen combustion technology, through flue gas recirculation, Jiang reduced the oxygen content in flue gas to achieve conversion to standard emission.
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