颗粒床过滤/催化反应器协同处理模拟烟气中的气-固相污染物  

Simultaneous removal of gas-solid phase pollutants in flue gases by granular bed catalytic/filtration reactor

作　　者：饶瑞晔 毛竹简[1,2] 郭绍英 RAO Ruiye;MAO Zhujian;GUO Shaoying(College of Ecology and Resource Engineering,Wuyi University,Wuyishan 354300,China;Fujian Provincial Key Laboratory of Eco-Industrial Green Technology(Wuyi University),Wuyishan 354300,China;Fujian Provincial Bamboo Engineering Technology Reserach Center(Wuyi University),Wuyishan 354300,China)

机构地区：[1]武夷学院生态与资源工程学院,武夷山354300 [2]福建省生态产业绿色技术重点实验室(武夷学院),武夷山354300 [3]福建省竹材工程技术研究中心(武夷学院),武夷山354300

出　　处：《环境工程学报》2021年第5期1606-1615,共10页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51406141);福建省科技计划区域发展项目(2020H4026);福建省自然基金面上项目(2020J01411,2020J01413);武夷学院启动经费(YJ202009)。

摘　　要：制备了应用于颗粒床过滤/催化反应器中的氧化铜/活性炭催化剂(CuO/AC),并探究其协同去除模拟烟气中气-固相污染物(如NO、SO2及飞灰等)的效果。结果表明:协同催化/过滤NO、SO2和飞灰的去除效率分别为50%~61%、69%~81%和89%~99%;当CuO/AC催化剂吸收SO2转换成CuSO4-CuO/AC催化剂时,对NO的还原能力得以提升。利用BET和FESEM/EDS考察了飞灰对协同去除污染物的影响,发现细颗粒(约为4μm)会阻塞并减少催化剂表面和孔洞体积,并轻微降低催化剂对NO和SO2的去除效率。造成前述现象的原因可能是颗粒床反应器床质的磨耗行为提高了催化剂在烟尘环境下的负荷能力。颗粒床过滤/催化反应器具有协同处理气状及粒状污染物的潜力。This study investigated the potential of utilizing a granular bed catalyst/filtration reactor(used CuO/AC catalyst)for simultaneous removal of gas-solid phase pollutants(NO,SO2,and fly ash)in simulated flue gas.Results showed that the simultaneous catalytic/filtration rates of NO,SO2,and fly ash was 50%~61%,69%~81%,and 89%~99%,respectively by granular bed catalytic/filtration reactor.In addition,results also showed increased NO conversion with the formation of CuSO4-CuO/AC.BET and FESEM/EDS results showed that fine ash particles(about 4μm)can obstruct and reduce the catalyst surface area and pores.Because of the erosion,the catalyst with granular bed reactor has high tolerance ability of fly ash.Therefore,the granular bed catalyst reactor has the potential to simultaneous control both gaseous and particulate impurities.

关 键 词：协同去除 烟尘 一氧化氮 二氧化硫 颗粒床过滤/催化反应器 

分 类 号：X51[环境科学与工程—环境工程] TQ032[化学工程]