CAJ | 학술논문

利用热重分析仪对提质煤与高炉喷吹用烟煤单独燃烧过程、不同比例混合燃烧过程进行了研究。考察了提质煤添加量与混煤燃烧的特征参数、相互影响程度之间的相关性，并用 DAEM动力学模型计算了不同提质煤配加量时混煤的活化能。结果表明：提质煤单独燃烧速率要快于高炉喷吹用烟煤单独燃烧速率；随着提质煤配比的增加，混煤着火温度降低，可燃指数和综合燃烧特性指数增大，燃烧性能变好；提质煤与烟煤混燃相互作用因子犓值均大于1，两者在燃烧过程中具有相互促进作用；随着提质煤配比量的增加，混煤的活化能逐渐降低，混煤燃烧活性逐渐变强。
이용열중분석의대제질매여고로분취용연매단독연소과정、불동비례혼합연소과정진행료연구。고찰료제질매첨가량여혼매연소적특정삼수、상호영향정도지간적상관성，병용 DAEM동역학모형계산료불동제질매배가량시혼매적활화능。결과표명：제질매단독연소속솔요쾌우고로분취용연매단독연소속솔；수착제질매배비적증가，혼매착화온도강저，가연지수화종합연소특성지수증대，연소성능변호；제질매여연매혼연상호작용인자추치균대우1，량자재연소과정중구유상호촉진작용；수착제질매배비량적증가，혼매적활화능축점강저，혼매연소활성축점변강。
Thermo‐gravimetric analysis is performed to study the combustion performance of upgraded low rank coal,bituminous coal injected into blast furnace and their mixture.It’s studied the relationship between adding quantity of upgraded low rank coal and change rules of blended coal combustion index and their influence on each other.Blended combustion kinetics is analyzed by using the distributed activation energy model (DAEM).The results indicate that the combustion rate of upgraded low rank coal is faster than that of bituminous coal.With the increase of adding quantity of upgraded low rank coal in the blended coal,the ignition temperature gradually decreases,the combustible index and comprehensive combustion index increase,and burning effect gets better.The value of interaction factors K of all blended coals are greater than 1,which suggests that the mutual promotion between upgraded low rank coal and bituminous coal in the combustion process exists.The apparent activation energy of blended coals decrease with the increase of adding quantity of upgraded low rank coal,which indicates the combustion activity of blend coal gradually stronger.