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1、化工進(jìn)展2017年第36卷第3期CHEMICALINDUSTRYANDENGINEERINGPROGRESS·1107·低溫等離子改性復(fù)合鈣基吸附劑煙氣脫硫?qū)嶒?yàn)研究丁衛(wèi)科,段鈺鋒,張君,趙文廣,孫益,劉猛(東南大學(xué)能源熱轉(zhuǎn)換及其過(guò)程測(cè)控教育部重點(diǎn)實(shí)驗(yàn)室,江蘇南京210096)摘要:低溫等離子技術(shù)對(duì)固體吸附劑表面具有明顯的改性作用,為研究低溫等離子改性對(duì)復(fù)合鈣基吸附劑脫硫的影響,并開(kāi)發(fā)高效的脫硫吸附劑,分別制取了不同比例的活性炭/復(fù)合鈣基吸附劑(AC/CaO),并在固定床吸附實(shí)驗(yàn)臺(tái)上進(jìn)行脫硫?qū)嶒?yàn),探究配比、吸附溫度、O2濃度對(duì)SO2吸附
2、效果的影響。在優(yōu)化的實(shí)驗(yàn)條件下,進(jìn)一步探究低溫等離子改性對(duì)復(fù)合鈣基吸附劑脫硫的影響。結(jié)果表明,在最佳實(shí)驗(yàn)條件下,復(fù)合鈣基吸附劑對(duì)SO2的單位質(zhì)量吸附量達(dá)到24.89mg/g,大于純CaO的脫硫效果;通過(guò)低溫等離子處理后的復(fù)合鈣基吸附劑擁有更高的SO2脫除效率,與未改性復(fù)合鈣基吸附劑相比,單位質(zhì)量吸附量提高了61.7%;在SO2和NO的競(jìng)爭(zhēng)脫除反應(yīng)中,經(jīng)過(guò)低溫等離子改性后,復(fù)合鈣基吸附劑脫除污染物向著有利于脫除SO2的方向發(fā)展。關(guān)鍵詞:低溫等離子;復(fù)合鈣基吸附劑;脫硫中圖分類號(hào):X511文獻(xiàn)標(biāo)志碼:A文章編號(hào):1000–6613(201
3、7)03–1107–06DOI:10.16085/j.issn.1000-6613.2017.03.045Experimentalstudyondesulfurizationfromfluegasbycalcium-basedcompositesorbentwithnon-thermalplasmatreatedDINGWeike,DUANYufeng,ZHANGJun,ZHAOWenguang,SUNYi,LIUMeng(KeyLaboratoryofEnergyThermalConversionandControlofMinist
4、ryofEducation,SoutheastUniversity,Nanjing210096,Jiangsu,China)Abstract:Non-thermalplasmatechnologyhassignificantmodificationeffectonsolidadsorbentsurface.Inordertostudytheeffectofcalcium-basedsorbentmodifiedbynon-thermalplasmaondesulfurizationanddevelopahighefficientdes
5、ulfurizationadsorbent,thecalcium-basedsorbentswithdifferentratiosofactivatedcarbon(AC/CaO)wereprepared.TheinfluencesofACtoCaOratio,adsorptiontemperature,O2concentrationonthedesulfurizationofcalciumbasedsorbentwerestudiedinafixedbedadsorptiontestbench.Undertheoptimizedex
6、perimentalconditions,theeffectsofnon-thermalplasmamodificationonthedesulfurizationwerefurtherstudied.Resultsshowedthatthemaximumcapacityofpermasscalcium-basedadsorptionforSO2reached24.89mg/gintheoptimalexperimentalconditions,whichwasgreaterthanthepureCaO.Thecalcium-base
7、dsorbentstreatedwithnon-thermalplasmaperformedhigherSO2removalefficiency.Comparedwiththeunmodifiedcalcium-basedsorbent,SO2adsorptioncapacitypermassincreasedby61.7%throughnon-thermalplasmamodification.TherearecompetitiveremovalreactionbetweenSO2andNOwithcalcium-basedsorb
8、ent,however,itwasfavorableforSO2removalafternon-thermalplasmamodification.Keywords:non-thermalplasmatechnology