Pretreatment and Properties of Lignite by Mild Condition
Huo linhe and Xiao longtan lignite with high moisture content was carried out by mild condition （150 ～400 ℃）. Physical and chemical properties have been investigated in detail using thermogravimetric, nitrogen adsorption and oxygen-functional group analysis. As a result, the oxygen-functional group content of two treated coals obviously decreased, Especially carboxyl, at 350 ℃,the removal rate of two treated coals were respectively 77.64％and 71.87％.In pyrolysis temperature range, the specific surface area of the two lignite all have the trend of first decreases and then increases. Furthermore, carbon content increased, oxygen content and volatile matter decreased, the calorific value obviously increased, showing that the coal rank somewhat raised.
lignite low temperature pyrolysis oxygen-functional group specific surface area
ZHANG Qiumin SONG Binbin HE Demin GUAN Jun ZHAO Shuchang
Institute of Coal Chemical Engineering, Dalian University of Technology, 129 Street, Dalian 116012, Institute of Coal Chemical Engineering, Dalian University of Technology, 129 Street, Dalian 116012,
国际会议
第四届中日化工学术研讨会(The 4th Joint China/Japan Chemical Engineering Symposium)(CJCES)
成都
英文
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）