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煙氣脫硝反應(yīng)脫硝技術(shù)原理

1、SNCR脫硝是將還原劑(an水)噴入爐內(nèi)800~1050度區(qū)間,在高溫下將氮氧化物還原成氮?dú)夂退?實(shí)現(xiàn)氮氧化物達(dá)標(biāo)排放,脫硝效率大于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(shí)現(xiàn)還原反應(yīng),將氮氧化物還原成氮?dú)夂退?實(shí)現(xiàn)氮氧化物達(dá)標(biāo)排放,脫硝效率大于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(固體干粉高分子)噴入爐內(nèi)700~850度區(qū)間,在高溫下將氮氧化物還原成氮?dú)夂退?實(shí)現(xiàn)氮氧化物達(dá)標(biāo)排放,脫硝效率大于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(wěn)定的NO氧化成NO2,是利用NO2溶于水的特性,通過噴淋吸收,形成硝酸或亞硝酸,再用堿中和,實(shí)現(xiàn)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(lián)合脫硝技術(shù):SNCR/SCR 組合技術(shù)是指在煙氣工藝中安裝 SNCR 和 SCR設(shè)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(shù)改造,通過煙氣再循環(huán),jiang低煙氣中氧含量,實(shí)現(xiàn)折算達(dá)標(biāo)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.
以上就是為大家介紹的有關(guān)沼氣脫硫的詳細(xì)的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù)http://www.mimi5.cn
The above is a detailed introduction about biogas desulfurization. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://www.mimi5.cn

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