CAJ | 학술논문

采用固定床反应器考察了在不同烟气条件下活性炭负载 V2 O5(V2 O5/AC)脱硝催化剂的低温 SCR 脱硝性能。结果表明：活性炭负载 V2 O5后吸附 NO 的能力有所提升，吸附 NH 3的能力显著增强；所制备的 V2 O5/AC 催化剂可在250℃、空速36000 L/(kg??h)的条件下表现出高达90％的脱硝效率，虽然继续升高温度能够进一步提高脱硝效率，但也会造成活性炭的烧蚀；当模拟烟气中加入 H 2 O 时会导致催化剂脱硝性能的下降。暂态响应实验结果表明 O2的存在是 SCR 脱硝反应连续进行的必要条件。
채용고정상반응기고찰료재불동연기조건하활성탄부재 V2 O5(V2 O5/AC)탈초최화제적저온 SCR 탈초성능。결과표명：활성탄부재 V2 O5후흡부 NO 적능력유소제승，흡부 NH 3적능력현저증강；소제비적 V2 O5/AC 최화제가재250℃、공속36000 L/(kg??h)적조건하표현출고체90％적탈초효솔，수연계속승고온도능구진일보제고탈초효솔，단야회조성활성탄적소식；당모의연기중가입 H 2 O 시회도치최화제탈초성능적하강。잠태향응실험결과표명 O2적존재시 SCR 탈초반응련속진행적필요조건。
Effects of reaction conditions on low-temperature SCR activity of the activated carbon-supported vanadium oxide (V2 O5/AC)catalyst were investigated in a fixed bed reactor.The results suggest that, compared with AC,the NO adsorption capacity of V2 O5/AC was enhanced a little while the NH 3 adsorp-tion capacity was significantly enhanced.The prepared V2 O5/AC catalyst had approximately 90% NOx re-duction rate at 250 ℃ and 36 000 L/(kg??h)space velocity.Raising the temperature could promote the SCR process,but the ablation of AC was also accelerated.The SCR reactivity declined when H 2 O was add-ed into the simulated flue gas.Results of the transient response test suggest that O2 was essential to the SCR reaction.