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

【摘要】：針對(duì)適用于焦化煙氣的溴摻雜釩鈦催化劑,為進(jìn)一步探索其脫硝機(jī)理及動(dòng)力學(xué)規(guī)律,研究采用浸漬法制備V/Br-Ti催化劑,從瞬態(tài)動(dòng)力學(xué)和穩(wěn)態(tài)動(dòng)力學(xué)的角度對(duì)催化劑進(jìn)行反應(yīng)動(dòng)力學(xué)研究。結(jié)果表明,在250℃時(shí)4V5Br-Ti催化劑的脫硝效率達(dá)到98%;在V/Br-Ti催化劑上進(jìn)行的SCR反應(yīng)機(jī)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(yīng);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(yīng)的。在實(shí)驗(yàn)條件下,V/Br-Ti催化劑的NH_3、O_2、NO反應(yīng)級(jí)數(shù)分別為0、0.5、1級(jí)。4V5Br-Ti催化劑SCR表觀反應(yīng)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(yīng)活性,具有一定的實(shí)際工業(yè)應(yīng)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(hào)：1755856