CAJ | 학술논문

利用快速升温热重分析装置研究了宁东煤的水蒸气气化反应行为，考察了反应温度、水蒸气浓度、碳酸钾添加量及钾-铁复合催化剂对宁东煤反应性的影响规律。结果表明，宁东煤的催化气化反应活性随温度升高显著增大。气化温度750℃和800℃时，宁东煤反应性指数分别增大为700℃时的1.82倍和5.10倍。水蒸气浓度从20%增加到60%时，相应的反应性指数增大约2.56倍，证明宁东煤和水蒸气反应基本呈一级反应；但当水蒸气浓度增大至60%以上时，反应速率的增加不明显。催化剂碳酸钾添加量增加能显著提高气化反应速率，但钾-铁复合催化剂并没有明显的协同效应。
이용쾌속승온열중분석장치연구료저동매적수증기기화반응행위，고찰료반응온도、수증기농도、탄산갑첨가량급갑-철복합최화제대저동매반응성적영향규률。결과표명，저동매적최화기화반응활성수온도승고현저증대。기화온도750℃화800℃시，저동매반응성지수분별증대위700℃시적1.82배화5.10배。수증기농도종20%증가도60%시，상응적반응성지수증대약2.56배，증명저동매화수증기반응기본정일급반응；단당수증기농도증대지60%이상시，반응속솔적증가불명현。최화제탄산갑첨가량증가능현저제고기화반응속솔，단갑-철복합최화제병몰유명현적협동효응。
Effect of temperatures, steam concentration, K2CO3 addition, K-Fe combined catalyst on the H2O gasification of Ningdong para-bituminous coal(ND coal) was investigated with a thermogravimetric analyzer. The results indicate that the reactivity indexes of ND coal gasification at 750 and 800 ℃ are 1.82 and 5.10 times higher than that at 700 ℃. The gasification rate can be notably promoted by increasing steam concentration. The reactivity index of ND coal gasification with 60% steam is 2.56 times higher than that with 20% steam. It can be suggested that the steam gasification reaction may be the first order reaction. The gasification rate can be significantly improved by the K2CO3 addition. However, the synergistic effect of the K-Fe combined catalyst is not remarkable.