本文選題：選擇性催化還原(SCR) + V/Ti催化劑�。� 參考：《高�；瘜W工程學報》2017年05期

【摘要】：針對適用于焦化煙氣的溴摻雜釩鈦催化劑,為進一步探索其脫硝機理及動力學規(guī)律,研究采用浸漬法制備V/Br-Ti催化劑,從瞬態(tài)動力學和穩(wěn)態(tài)動力學的角度對催化劑進行反應動力學研究。結果表明,在250℃時4V5Br-Ti催化劑的脫硝效率達到98%;在V/Br-Ti催化劑上進行的SCR反應機制是吸附態(tài)的NH_3與氣態(tài)或弱吸附態(tài)的NO發(fā)生反應;O_2是以氣態(tài)氧、表面吸附氧和晶格氧三種形態(tài)參與SCR反應的。在實驗條件下,V/Br-Ti催化劑的NH_3、O_2、NO反應級數(shù)分別為0、0.5、1級。4V5Br-Ti催化劑SCR表觀反應活化能為35.4 k J×mol~(-1),低于目前商用的釩鈦基脫硝催化劑,表明該催化劑具有較高的反應活性,具有一定的實際工業(yè)應用潛力。
[Abstract]:In order to further explore the mechanism and kinetics of denitrification, the V/Br-Ti catalyst was prepared by impregnation method in view of the bromine doped vanadium titanium catalyst suitable for coking flue gas.The reaction kinetics of the catalyst was studied from the point of view of transient kinetics and steady state kinetics.The results show that the denitrification efficiency of 4V5Br-Ti catalyst reaches 98 at 250 鈩，

本文編號：1755856