CAJ | 학술논문

为了增强活性炭脱除燃煤电厂烟气中汞的能力,利用汞和硫可以生成稳定的HgS的性质,研究了通过热沉淀增加了活性炭中的硫含量的改性方法,并以SEM、BET、TGA等方法,研究了改性对活性炭表面形貌、硫在活性炭中的分布、活性炭比表面积等性能的影响.结果表明,热沉淀改性方法可以增加活性炭中的硫含量;硫粘附在活性炭的炭链上量较多,孔壁较少;改性工艺降低了活性炭的比表面积,且改性活性炭的比表面积随着温度的升高而增大;载硫后,活性炭中元素硫和炭的结合被增强.
위료증강활성탄탈제연매전엄연기중홍적능력,이용홍화류가이생성은정적HgS적성질,연구료통과열침정증가료활성탄중적류함량적개성방법,병이SEM、BET、TGA등방법,연구료개성대활성탄표면형모、류재활성탄중적분포、활성탄비표면적등성능적영향.결과표명,열침정개성방법가이증가활성탄중적류함량;류점부재활성탄적탄련상량교다,공벽교소;개성공예강저료활성탄적비표면적,차개성활성탄적비표면적수착온도적승고이증대;재류후,활성탄중원소류화탄적결합피증강.
Hg can react with sulfur to form HgS which is stable.To remove mercury in fuel gas from coal combustion plant.sulfur content in active carbon was increased by thermal deposition in this work.SEM,BET,TGA and other measurement methods were used to characterize the effect on surface morphology,sulfur distribution and specific surface.The experimental results showed that thermal deposition was effective in increasing sulfur content in active carbon:most sulfur was adhered on the carbon chain and little was on the wall of pore;specific surface was decreased though deposition and it increased with temperature increase;binding between carbonand sulfur molecular was increased.