CAJ | 학술논문

采用不同萃取液对新疆准东高钠煤进行逐级萃取实验，分析了煤中钠的存在形式。分别检测了不同温度下五彩湾煤原煤以及815℃下不同萃取方式处理的煤燃烧后煤灰中钠的含量，研究了五彩湾煤燃烧过程中钠的迁移释放规律。并且对传统灰分分析方法和微波消解-电感耦合等离子体原子发射光谱仪分析法（微波消解-ICP-AES分析法）测量煤中钠含量进行了比较。实验结果表明，新疆高钠煤中钠主要为水溶钠。五彩湾煤燃烧过程中，钠的释放主要发生在815℃之前，并且以水溶钠和有机钠的释放为主。不同存在形式的钠在燃烧中存在转化，主要表现为水溶钠向不可溶钠的转化以及不可溶钠向有机钠的转化。通过比较，微波消解-ICP-AES 分析法对煤中钠含量的分析更准确。
채용불동췌취액대신강준동고납매진행축급췌취실험，분석료매중납적존재형식。분별검측료불동온도하오채만매원매이급815℃하불동췌취방식처리적매연소후매회중납적함량，연구료오채만매연소과정중납적천이석방규률。병차대전통회분분석방법화미파소해-전감우합등리자체원자발사광보의분석법（미파소해-ICP-AES분석법）측량매중납함량진행료비교。실험결과표명，신강고납매중납주요위수용납。오채만매연소과정중，납적석방주요발생재815℃지전，병차이수용납화유궤납적석방위주。불동존재형식적납재연소중존재전화，주요표현위수용납향불가용납적전화이급불가용납향유궤납적전화。통과비교，미파소해-ICP-AES 분석법대매중납함량적분석경준학。
The existence forms of sodium in high sodium content coals from Zhundong area in Xinjiang Uygur Autonomous Region,China,were determined with the three-step-extraction method. The contents of sodium in Wucaiwan coal ash prepared at different temperatures and the treated coals ash prepared at 815℃ were measured. Release and transformation of sodium in coal were investigated during combustion process. The traditional determination method was compared with the analysis method by microwave digestion and inductively coupled plasma atomic emission spectrometry. Most of sodium in Wucaiwan coal existed mainly in the form of water-soluble sodium. During the combustion process,release of sodium from coal samples,especially water soluble sodium and ammonium-acetate soluble sodium,mainly took place ahead of 815℃. There was transformation among different forms of sodium during the combustion process. The main transformations were water soluble sodium to insoluble sodium and insoluble sodium to organic sodium. The analysis method by microwave digestion and inductively coupled plasma atomic emission spectrometry for measuring sodium in coal was more accurate.