热力发电Issue(8)：84-88,5.DOI:10.3969/j.issn.1002-3364.2014.08.084
温度和SiO2添加物对准东煤中碱金属的赋存形态及迁徙特性的影响
Effect of temperature and silicon additives on occurrence and transformation characteristics of alkali metal in Zhundong coal
摘要
Abstract
The Zhundong coal mined in Xinj iang area is rich in alkali metal,resulting in slagging problems during coal combustion.Thus,the effect of temperature and SiO2 additives on alkali metal occurrence and transformation characteristics was investigated.The results show that,the Na in Zhundong coal is mainly water-soluble,whereas the K,Ca and Mg are mainly water-insoluble.As the temperature rising,the content of water-soluble sodium in coal ash reduced significantly,but the content of water-insoluble sodium in-creased.The SiO2 additives can both increase the content of water-insoluble sodium and reduce the content of water-soluble sodium,enabling SiO2 a good ability of sodium capture.关键词
准东煤/碱金属/赋存形态/迁徙特性/温度/SiO2/添加剂Key words
Zhundong coal/alkali metal/occurrence/transformation characteristics/temperature/SiO2/additive分类
化学化工引用本文复制引用
王学斌,魏博,张利孟,谭厚章,徐通模..温度和SiO2添加物对准东煤中碱金属的赋存形态及迁徙特性的影响[J].热力发电,2014,(8):84-88,5.基金项目
国家自然科学基金(No．51376147,No．51306142) （No．51376147,No．51306142）
