摘要
利用固定床研究了在Mn、Co、Cu和Ni氧化物改性的HZSM-5(25)上吸附法深度脱除N2中低浓度NO的性能,同时考察了不同载体、Ni负载量、温度和杂质气体对该类吸附剂吸附脱除NO的影响,利用TPD实验考察了吸附剂的再生性能。结果表明,4种改性HZSM-5(25)中,Ni/HZSM-5(25)吸附脱除NO的性能最佳。Ni负载量为3.85%的Ni/HZSM-5(25),在常温常压下吸附脱除N2中的NO(150μL/L)时,NO穿透吸附量最高达6.14 mg/g;N2中7%O2可使NO的穿透吸附量提高近1倍,10%CO2使NO的穿透吸附量略有降低。该类吸附剂可以用N2在670 K温度下吹扫再生。
Deep removal of low concentration NO from N2 was studied by using Mn, Co, Cu and Ni oxides modified HZSM-5（25） as absorbent, and among these four absorbents, Ni/HZSM-5 showed the best performance. Effects of support type, Ni loading amounts, adsorption temperature and impurity gases on NO adsorption of these absorbents were investigated. TPD experiment was used for determination of the adsorbent regeneration temperature. The results showed that Ni/HZSM-5 （25） with ω（Ni） of 3.85% had the highest breakthrough absorbing capacity of 6.14mg/g for NO in N2 at room temperature and atmospheric pressure. The 7% O2 in N2 could make NO adsorption amount on Ni/HZSM-5（25） increase by nearly 100%, and the 10% CO2 in N2 slightly decreased the NO adsorption amount. The adsorbent could be regenerated by N2 at 670 K.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2009年第4期485-489,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
教育部新世纪优秀人才支持计划项目(NCET-04-0268)资助
