CAJ | 학술논문

在石英管流化床反应器中对胜利褐煤进行快速热解实验，考察了773～1173 K下酸洗脱矿对胜利褐煤热解过程中N迁移转化规律的影响。通过比较原煤和酸洗后煤中N的不同逸出规律可以得出，影响酸洗前后胜利褐煤热解过程中N迁移转化规律的主要是碱金属Na及碱土金属Ca；热解过程中，煤中的Na和Ca促使煤中的N向NH3转化并有效抑制了HCN的生成，金属离子的存在对催化焦油N转化为NH3的作用较为明显；原煤中的碱金属和碱土金属的赋存使半焦裂解反应加剧，降低了固体半焦的产率，半焦N的产率也随之减少；与原煤相比，酸洗煤热解半焦中的吡啶型N（ N-6）含量较多，而吡咯型N （N-5）和季N（N-Q）相对较少。
재석영관류화상반응기중대성리갈매진행쾌속열해실험，고찰료773～1173 K하산세탈광대성리갈매열해과정중N천이전화규률적영향。통과비교원매화산세후매중N적불동일출규률가이득출，영향산세전후성리갈매열해과정중N천이전화규률적주요시감금속Na급감토금속Ca；열해과정중，매중적Na화Ca촉사매중적N향NH3전화병유효억제료HCN적생성，금속리자적존재대최화초유N전화위NH3적작용교위명현；원매중적감금속화감토금속적부존사반초렬해반응가극，강저료고체반초적산솔，반초N적산솔야수지감소；여원매상비，산세매열해반초중적필정형N（ N-6）함량교다，이필각형N （N-5）화계N（N-Q）상대교소。
This paper is to examine effects of inherent minerals in coal on N migration and transformation during the fast pyrolysis of Shengli brown coal at the temperatures of 773~1 173 K in a bench-scale fluidized-bed quartz reactor.Based on the comparison between raw coal and acid-washed coal, we can find that the alkali Na and alak line Ca were the key reasons for the difference in N evolutions from raw coal and demineralized coal during the pyrolysis.The Na and Ca could efficiently facilitate the formation of NH3 and inhibit the production of HCN. The metallic species had obv ious catalytic ef ects for ht e conversion from tar-N to NH3 .Meantime, the existence of alkali and alkaline metals has enhanced the cracking reactions of coal char, thus reducing the yields of char and char-N.In addition, the relative amount of pyridinic( N-6) in demineralized coal char was hihg re than that inr aw coal, while less qutre an ry type nitrogen ( N-Q ) and pyrrolic nitrogen ( N-5 ) were found in the demni eralized coal char.