CAJ | 학술논문

在小型固定床吸附试验台上开展了黏胶基活性炭纤维吸附SO2和NO的实验研究，考察样品在N2和O2气氛下单独吸附SO2和NO及NO吸附暂态反应与联合吸附的区别，结合傅里叶变换红外光谱分析(FTIR)、程序升温脱附试验(TPD)分析吸附前后活性炭纤维表面官能团的变化及吸附强度，以此探讨活性炭纤维联合脱硫脱硝的机理。结果表明：氮气气氛下吸附态SO2和NO被活性炭纤维表面含氧官能团氧化。O2气氛下吸附 SO2实验过程中，活性炭纤维表面部分含氮官能团被O2氧化为亚硝基基团，此基团为SO2的吸附提供活性位；O2气氛下吸附NO实验过程中，吸附态NO 被氧化为—NO3官能团；联合吸附过程中，吸附态的NO在O2气氛下被氧化为—NO2、—NO3基团，吸附态NO被氧化为—NO2和—NO3形式，SO2与此含氮官能团形成络合物，络合过程中—NO2、—NO3基团被还原并释放出NO和NO2气体，吸附态的SO2被氧化为高价氧化态S形式。
재소형고정상흡부시험태상개전료점효기활성탄섬유흡부SO2화NO적실험연구，고찰양품재N2화O2기분하단독흡부SO2화NO급NO흡부잠태반응여연합흡부적구별，결합부리협변환홍외광보분석(FTIR)、정서승온탈부시험(TPD)분석흡부전후활성탄섬유표면관능단적변화급흡부강도，이차탐토활성탄섬유연합탈류탈초적궤리。결과표명：담기기분하흡부태SO2화NO피활성탄섬유표면함양관능단양화。O2기분하흡부 SO2실험과정중，활성탄섬유표면부분함담관능단피O2양화위아초기기단，차기단위SO2적흡부제공활성위；O2기분하흡부NO실험과정중，흡부태NO 피양화위—NO3관능단；연합흡부과정중，흡부태적NO재O2기분하피양화위—NO2、—NO3기단，흡부태NO피양화위—NO2화—NO3형식，SO2여차함담관능단형성락합물，락합과정중—NO2、—NO3기단피환원병석방출NO화NO2기체，흡부태적SO2피양화위고개양화태S형식。
Removal of SO2 and NO by viscose base activated carbon fibers were carried out on a fixed-bed adsorption reactor. The change of surface functional groups and adsorption strength before and after the individual and simultaneous adsorption of SO2 and NO in N2/O2, respectively, were investigated by using FTIR and TPD. Results show that both of the adsorbed SO2 and NO can be oxidized by the oxygen-containing functional groups in N2. In O2, part of the nitrogen-containing functional groups is oxidized into nitroso which provides SO2 adsorption sites in separate adsorption SO2 process. Whereas, —NO3 is detected on the surface of the activated carbon fibers in adsorption NO process. In the process of simultaneous adsorption SO2 and NO, adsorbed NO is oxidized to —NO2 and —NO3 which provide adsorption sites for SO2. Adsorbed SO2 is oxidized to higher valance sulfur in oxidized form by —NO2 and —NO3 while these nitrogen-containing functional groups were restored.