摘要
以山西沁水盆地寺河矿无烟煤为研究对象,采用溶剂萃取法,对四类不同煤体结构的煤样分别用苯、四氢呋喃(THF)和1-甲基-2-吡咯烷酮(NMP)溶剂进行萃取,结合柱层析法,对煤样萃取物进行了族组成分析.研究发现,随煤体结构破坏程度的增加,煤样的溶剂萃取率增大.其中NMP溶剂的萃取率最大,THF次之,苯溶剂萃取率最小;随着煤体结构破坏程度的增高,萃取物中的族组成呈现总烃的含量相对下降、非烃类化合物含量总体增加的变化规律.其中,饱和烃类含量减少,芳香烃含量和非烃含量相对增加,而沥青质组分的相对含量减少.
Exampled by anthracite coal from Sihe coalmine of Qinshui coal basin, Shanxi Province, four coal samples with different deformed extent were extracted by three solvents, in- cluding benzene, tetrahydrofuran （THF） and 1-methyl-2-pyrrolidinone （NMP） under the condi- tion of room temperature, the group composition of the extraction were separated and measured by column chromatography method and the extract yield were calculated. The study shows that with the increasing of the damage extent of coal body structure, the extraction ratio shows the in- creasing trend, in which the maximum extraction rate of the solvent was NMP, THF the second, and then benzene in turn. For the three solvent, the group composition of the extraction shows the same rule. as the damage extent of coal structure increasing, the relative contents of total hy- drocarbon decrease, in which the content of alkane hydrocarbons decreases but the content of aro- matic hydrocarbons relative increases. And the total contents of non-hydrocarbon increase, in which resin content increases but asphaltene content relatively decreases.
出处
《煤炭转化》
CAS
CSCD
北大核心
2012年第2期6-11,共6页
Coal Conversion
基金
国家自然科学基金资助项目(41072113)
中国矿业大学煤炭资源与安全开采国家重点实验室开放基金资助项目(SKLCRSM10KFB01)
关键词
煤体结构
溶剂萃取
萃取率
族组成
coal structure, solvent extraction, extraction yield, group composition
