低溫下CO選擇性催化還原NO_x的實(shí)驗(yàn)研究
發(fā)布時(shí)間:2018-05-18 00:13
本文選題:低溫 + 一氧化碳(CO); 參考:《東北大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年07期
【摘要】:進(jìn)行了CO作為還原劑選擇性催化還原低溫?zé)煔庵蠳O_x的實(shí)驗(yàn).主要考察了反應(yīng)溫度、活性金屬負(fù)載質(zhì)量比、活性金屬種類(lèi)3個(gè)因素對(duì)脫硝效率及CO轉(zhuǎn)化率的影響.結(jié)果表明:考察溫度窗口內(nèi)(100~180℃),隨著反應(yīng)溫度的升高,Cu-Co/Al_2O_3催化劑的NO脫除率逐漸升高,Cu-Mn/Al_2O_3催化劑的NO脫除率先升高后降低,CO轉(zhuǎn)化率不斷增大;隨著活性金屬負(fù)載質(zhì)量比的改變,實(shí)驗(yàn)工況下Cu-Co/Al_2O_3和Cu-Mn/Al_2O_3催化劑活性金屬負(fù)載質(zhì)量比均為1.5時(shí)催化劑的脫硝性能最優(yōu);Cu-Mn/Al_2O_3的整體NO脫除率高于Cu-Co/Al_2O_3;8種催化劑中活性金屬負(fù)載質(zhì)量比為1.5的Cu-Mn/Al_2O_3催化劑在160℃下脫硝效果最好.
[Abstract]:The experiment of selective catalytic reduction of NO_x in low temperature flue gas with CO as reducing agent was carried out. The effects of reaction temperature, loading mass ratio of active metals and kinds of active metals on denitrification efficiency and CO conversion were investigated. The results show that the no removal rate of Cu-Co / Al _ 2O _ 3 catalyst increases gradually with the increase of reaction temperature in the temperature window and decreases the CO conversion with the increase of Cu-MnR / Al _ 2O _ 3 catalyst. The optimum denitrification performance of Cu-Co/Al_2O_3 and Cu-Mn/Al_2O_3 catalysts is 1.5. The overall no removal rate of Cu-Mn / Al _ 2O _ 3 is higher than that of Cu-Mn/Al_2O_3 catalyst with active metal loading mass ratio of 1.5 in Cu-CoO / Al _ S _ 2O _ 3 catalyst. The denitrification effect of the catalyst is the best at 160 鈩,
本文編號(hào):1903496
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