CAJ | 학술논문

利用热重分析仪研究不同粒径、不同升温速率下川北低热值煤矸石着火稳定性和综合燃尽特性，并且对煤和煤矸石不同掺混比例的热失重进行了研究。结果表明，1.0 mm以下低热值煤矸石的着火稳定性与粒径没有明显关系，且均极易稳定着火。煤矸石的综合燃尽指数则随着煤矸石粒径的增大而降低；提高升温速率，可以使低热值煤矸石的燃烧强度增加，但着火、燃尽温度均升高；低热值煤矸石中掺混煤可以提高热失重率，改善低热值煤矸石的着火特性，达到更好的燃烧效果，有利于提高锅炉的安全性和经济性。
이용열중분석의연구불동립경、불동승온속솔하천북저열치매안석착화은정성화종합연진특성，병차대매화매안석불동참혼비례적열실중진행료연구。결과표명，1.0 mm이하저열치매안석적착화은정성여립경몰유명현관계，차균겁역은정착화。매안석적종합연진지수칙수착매안석립경적증대이강저；제고승온속솔，가이사저열치매안석적연소강도증가，단착화、연진온도균승고；저열치매안석중참혼매가이제고열실중솔，개선저열치매안석적착화특성，체도경호적연소효과，유리우제고과로적안전성화경제성。
In this paper,the eombustion eharaeteristies of the North-Siehuan low-ealorifie-value eoal gangue at different partiele sizes and varying heating rates were investigated using thermogravimetrie ana-lyzer. The ignition stability and eomprehensive burn-out behavior of different-size eoal gangue were em-phasized presently. Besides,the thermogravimetry analysis was also performed on the eoal/gangue hybrid fuels of varying blending ratios in this paper. The results showed that for the low-ealorifie-value gangue with diameters below 1. 0 mm,they were partieularly easy to be ignited,and their ignition stability was rarely dependent on the partiele size. However,the eomprehensive burn-out index deereased with the in-erement of partiele size. The inerement of the heating rate led to an intensified eombustion reaetion rate as well as inereases of the ignition and burn-out temperatures. Additionally,an addition of eoal into the gangue eould not only inerease the mass loss rate,but also improve its ignition behavior and aehieve a bet-ter eombustion performanee,whieh eould be eonduetive to seeurity and eeonomie effieieney of the boilers.