本文選題：MILD燃燒 + NO生成　； 參考：《煤炭學(xué)報(bào)》2016年09期

【摘要】：利用CHEMKIN研究氧化劑與內(nèi)回流煙氣之間的摻混溫度和氧氣體積分?jǐn)?shù)兩個(gè)關(guān)鍵因素對(duì)氧煤MILD燃燒條件下NO生成的影響,選取氧化劑氣氛為5%O_2/90%CO_2/5%H_2O,10%O_2/85%CO_2/5%H_2O,15%O_2/80%CO_2/5%H_2O和25%O_2/70%CO_2/5%H_2O,溫度為1 273,1 373和1473 K。結(jié)果表明:NH_2是一關(guān)鍵的前驅(qū)組分,反應(yīng)NH_2+OH=NH+H_2O對(duì)促進(jìn)NO生成影響最大,而反應(yīng)NH_2+NO=N_2+H_2O對(duì)抑制NO生成影響最大,兩者影響力隨著氧氣體積分?jǐn)?shù)降低而加大;提高摻混溫度和氧氣體積分?jǐn)?shù)可增大燃料N→NO的轉(zhuǎn)化率和OH基團(tuán)的平衡濃度,氧氣體積分?jǐn)?shù)10%~15%是一個(gè)可兼顧C(jī)O和NO排放的較合理區(qū)間,且氧氣體積分?jǐn)?shù)的改變對(duì)污染物排放的影響與摻混溫度的關(guān)系不大;NO還原路徑的反應(yīng)速率在低氧氣體積分?jǐn)?shù)下反而有不同程度的增大,在MILD燃燒條件下,還原反應(yīng)的趨勢(shì)增強(qiáng),從而延長(zhǎng)反應(yīng)進(jìn)程,增加系統(tǒng)的整體復(fù)雜性。
[Abstract]:The results showed that the reaction of NH_2 OH=NH H 2O had the greatest effect on the no production, while the reaction NH_2 NO=N_2 H 2O had the greatest effect on the inhibition of no production, and the influence of the reaction NH_2 NO=N_2 H 2O on no production increased with the decrease of oxygen volume fraction. Increasing the blending temperature and oxygen volume fraction can increase the conversion rate of no and the equilibrium concentration of OH group. The oxygen volume fraction of 10 ~ 15% is a reasonable range for both CO and no emission. The effect of oxygen volume fraction on pollutant emission is not related to the mixing temperature. The reaction rate of no reduction path increases in varying degrees under the low oxygen gas integral number, and the trend of reduction reaction increases under the condition of MILD combustion. Thus prolonging the reaction process and increasing the overall complexity of the system.
【作者單位】： 同濟(jì)大學(xué)機(jī)械與能源工程學(xué)院;
【基金】：上海市重點(diǎn)實(shí)驗(yàn)室建設(shè)資助項(xiàng)目(13DZ2260900)
【分類號(hào)】：TK16

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 楊雄;劉應(yīng)書;沈民;劉文海;張輝;李永玲;孟宇;;高原低氣壓環(huán)境室內(nèi)富氧的安全氧氣體積分?jǐn)?shù)上限[J];北京科技大學(xué)學(xué)報(bào);2009年11期

相關(guān)會(huì)議論文 前1條

1 虎正祥;;空氣中氧氣體積分?jǐn)?shù)測(cè)定實(shí)驗(yàn)的辨析[A];甘肅省化學(xué)會(huì)第二十五屆年會(huì)、第七屆甘肅省中學(xué)化學(xué)教學(xué)經(jīng)驗(yàn)交流會(huì)論文集[C];2007年

，

本文編號(hào)：1774743