CAJ | 학술논문

在氮气气氛和600～1000℃条件下，使用水平管式炉对龙坪无烟煤进行了热解制焦实验，利用拉曼光谱分析了热解煤焦的微观结构变化，使用热重分析仪（TGA）进行了无烟煤焦的程序升温脱硝实验，研究了热解温度对无烟煤焦微观结构和脱硝特性的影响。研究结果表明：热解温度对无烟煤焦的微观结构有显著的影响，随着热解温度升高，煤焦的拉曼光谱G峰与D1峰的位置差逐渐减小，谱峰积分面积逐渐缩小，积分面积比值ID1/IG和 ID3/IG先增大后减小，IG/IAl 先减小后增大。热解温度还对无烟煤焦的脱硝特性有明显的影响，无烟煤随着热解温度升高由炭化向初步石墨化转变，由于活性结构数量的减少和碳结构变得更加有序，无烟煤焦的脱硝反应性不断降低，脱硝反应活化能增大。
재담기기분화600～1000℃조건하，사용수평관식로대룡평무연매진행료열해제초실험，이용랍만광보분석료열해매초적미관결구변화，사용열중분석의（TGA）진행료무연매초적정서승온탈초실험，연구료열해온도대무연매초미관결구화탈초특성적영향。연구결과표명：열해온도대무연매초적미관결구유현저적영향，수착열해온도승고，매초적랍만광보G봉여D1봉적위치차축점감소，보봉적분면적축점축소，적분면적비치ID1/IG화 ID3/IG선증대후감소，IG/IAl 선감소후증대。열해온도환대무연매초적탈초특성유명현적영향，무연매수착열해온도승고유탄화향초보석묵화전변，유우활성결구수량적감소화탄결구변득경가유서，무연매초적탈초반응성불단강저，탈초반응활화능증대。
The Longping anthracite was pyrolyzed in the temperature range of 600—1000℃ under N2 atmosphere for the preparation of char. The evolution of microstructure of anthracite char was characterized by Raman spectroscopy. The de-NOx reactivity of anthracite char was investigated using a thermogravimetric analyzer (TGA) under programmed temperature conditions. The present work is focused on the impact of pyrolysis temperature on anthracite char microstructure and de-NOx reactivity. The char microstructure was affected significantly by heat treatment temperature. The difference between G and D1 band position and all Raman band areas were found to decrease with increasing pyrolysis temperature. In addition,band area ratio,ID1/IG and ID3/IG,were shown to initially increase and then decrease with the increase of pyrolysis temperature,while with which IG/IAl varied oppositely. As a result,the Longping anthracite was subjected to carbonization and subsequent preliminary graphitization during pyrolysis. It was found that the de-NOx reactivity of anthracite char decreased with increasing pyrolysis temperature,largely due to the reduction of active structure and the increase of structural order,also leading to the gradual increase of reaction activation energy.