广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
17期
64-66
,共3页
CO2氨法捕获%NH3逸出%选择性催化氧化%催化剂
CO2氨法捕穫%NH3逸齣%選擇性催化氧化%催化劑
CO2안법포획%NH3일출%선택성최화양화%최화제
CO2-NH3%capture process%NH3 slip%selective catalytic oxidation (SCO)%catalyst
利用NH3选择性催化氧化（NH3-SCO）方法控制电站C02氨法捕获过程中的NH3逸出具有良好的应用前景，但用于该方法的催化剂应该具有高低温活性、高Nz选择性高、长耐久性和低成本等特性。为推进NH3-SCO技术的实用化进程，本文在文献研究的基础上，总结了几种NH3-SCO催化剂的组成、不同催化剂和不同运行条件下NH3-SCO的特性和机理以及能提升催化效果的助剂，以期为探索合适的新型催化剂和新型反应器结构提供参考。文献研究表明，Ag／Al2O3是一种具有良好低温活性的NH3-SCO催化剂，但需具备Fe-ZSM-5所具有的高N2选择性，同时，还可以考虑利用“些物质如Ce可以用来进一步提升Ag／Al2O3的低温活性。
利用NH3選擇性催化氧化（NH3-SCO）方法控製電站C02氨法捕穫過程中的NH3逸齣具有良好的應用前景，但用于該方法的催化劑應該具有高低溫活性、高Nz選擇性高、長耐久性和低成本等特性。為推進NH3-SCO技術的實用化進程，本文在文獻研究的基礎上，總結瞭幾種NH3-SCO催化劑的組成、不同催化劑和不同運行條件下NH3-SCO的特性和機理以及能提升催化效果的助劑，以期為探索閤適的新型催化劑和新型反應器結構提供參攷。文獻研究錶明，Ag／Al2O3是一種具有良好低溫活性的NH3-SCO催化劑，但需具備Fe-ZSM-5所具有的高N2選擇性，同時，還可以攷慮利用“些物質如Ce可以用來進一步提升Ag／Al2O3的低溫活性。
이용NH3선택성최화양화（NH3-SCO）방법공제전참C02안법포획과정중적NH3일출구유량호적응용전경，단용우해방법적최화제응해구유고저온활성、고Nz선택성고、장내구성화저성본등특성。위추진NH3-SCO기술적실용화진정，본문재문헌연구적기출상，총결료궤충NH3-SCO최화제적조성、불동최화제화불동운행조건하NH3-SCO적특성화궤리이급능제승최화효과적조제，이기위탐색합괄적신형최화제화신형반응기결구제공삼고。문헌연구표명，Ag／Al2O3시일충구유량호저온활성적NH3-SCO최화제，단수구비Fe-ZSM-5소구유적고N2선택성，동시，환가이고필이용“사물질여Ce가이용래진일보제승Ag／Al2O3적저온활성。
Using selective catalytic oxidation (SCO) to control NH3 slip in CO2-NH3 capture process in coal fired power plants has potential application foreground if the NH3-SCO catalysts used in this method has high low-temperature activity, high N2 selectivity and long-term durability, and at the same time, the catalysts arc not much expensive. In order to provide a reference to further explore appropriate new catalysts and new reactor structures to reduce the operation temperature of NH3-SCO process and improve low-temperature activity and N2 selectivity of the NH3-SCO catalysts, the composition of several kinds of the NH3-SCO catalysts, the characteristics and mechanisms of NH3-SCO under different catalysts and different operation conditions, and several promoters used to further promote the of the catalysts are introduced based on analyzing the literatures. The literature analyzing results show that Ag/Al2O3 is a potential NH~-SCO catalyst because it has good activity at low temperature, but its N2 selectivity is still needed to be promoted and Fe-ZSM-5 may be an assistance to Ag/Al2O3 in promoting N2 selectivity. Some substances such as Ce can be used to promote the activity of Ag/Al2O3 at low temperature. Keywords:
