溶剂类型对煤微波辅助抽提率及组成的影响  

IMPACT OF SOLVENT' TYPES ON MICROWAVE-ASSISTED EXTRACTION OF COAL' YIELD AND ITS CHEMICAL COMPONENT

作　　者：秦丽娜[1] 李建伟[1] 鱼娅[1] 任文文[1] 杨菌菌 

机构地区：[1]西安科技大学化学与化工学院,西安硕士生710054 [2]神华宁煤集团,银川助理工程师750410

出　　处：《煤炭转化》2009年第4期13-16,共4页Coal Conversion

基　　金：国家自然科学基金资助项目(40472082)

摘　　要：以神府煤和攀枝花煤为对象进行煤微波辅助抽提研究,所用溶剂有甲醇、乙醇、丙酮、乙酸、四氢呋喃、乙二胺和DMF等.结果表明,前四种溶剂对攀枝花煤的抽提率较高,后三种溶剂对神府煤的抽提率较高,其中乙二胺对神府煤的抽提率可达70.76%.抽提残煤的元素分析、官能团测定及FT-IR分析表明,各残煤H/C和O/C比略有降低而N/C明显升高;含氧官能团含量较脱灰煤有所增加,总酸性基及羟基含量提高;另外,利用GC/MS检测脱灰神府煤四氢呋喃抽提物,正己烷可溶物含较多的脂肪烷烃,甲苯可溶物中则含各种芳香族化合物,四氢呋喃可溶物中只检测到一种含氧杂原子化合物.The microwave-assisted extraction of Shenfu coal and Panzhihua coal have been discussed, using the following solvents： methanol, ethanol, acetone, acetic acid, THF, ethylene diamine and DMF. The experiment results showed that the extraction yield of Panzhihua coal u- sing former four solvents were higher, and Shenfu coal＇s using later three solvents were higher, extraction yield of ethylene diamine was 70.76~. Dry ash-free basis coal and its residues were examined with ultimate analysis, functional group, and FT-IR, which indicated that H/C and O/C ratio of residues had a little decrease, and N/C ratio significantly increased. Compared to the deashed coal, oxygen-containing functional groups content of residues increased, total acidity and hydroxyl content enhanced. THF extracts of Shenfu coal were analyzed with GC/MS： hexane contained more alkanes, and more aromatic compounds in toluene, while only one oxygen-contai- ning heteroatomic compound in THF.

关 键 词：煤 抽提 微波辅助 FT—IR GC/MS 

分 类 号：TQ531.5[化学工程—煤化学工程]