三种煤中有机氯和溴的赋存形态及原理  

OCCURRENCE MORPHOLOGY AND PRINCIPLE OF ORGANIC CHLORINE AND BROMINE IN THREE KINDS OF COAL

作　　者：郭伟[1] 秦志宏[1] 李春生[1] 单良[1] 

机构地区：[1]中国矿业大学化工学院,煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《煤炭转化》2016年第3期11-18,共8页Coal Conversion

基　　金：国家自然科学基金资助项目(51274201);国家自然科学基金-煤炭联合基金资助项目(U1361116);国家重点基础研究发展计划(973)项目(2012CB214900);教育部高等学校博士学科点专项科研基金资助项目(20130095110006)

摘　　要：依据煤全组分族分离方法——萃取反萃取法及煤嵌布结构模型思想,采用正己烷、甲醇、丙酮、氯仿、CS_2和THF六级溶剂对淮北童亭煤（HB）、徐州煤（XZ）和平顶山煤（PDS）各族组分进行分级分次索氏萃取,对各级萃取物进行GC-MS分析.结果表明：索氏萃取溶出物中有机卤化物的溶出行为主要发生在氯仿级的萃取过程中,其溶出物主要以脂基氯、芳基氯（溴）和杂环基氯化物4类卤化物为主,相对分子质量为94~250.其中,杂环基氯化物倾向分布于疏中质组和密中质组中,以较小微孔嵌入态和网络嵌入态赋存;芳基卤化物倾向分布于重质组中,以较小微孔嵌入态赋存;脂基氯化物在各族组分中没有倾向性,以3种赋存状态存在于各族组分中.Based on the extraction and stripping method and inbuilt model of coal struc- ture, all group components of Huaibei Tongting coal, Xuzhou coal and Pingdingshan coal were extracted fractionally by solvents of n-hexane, methanol, acetone, chloroform, C82 and THF in proper order. The extracts of all levels were analyzed by GC-MS. The results show that dissolu- tion behavior of organohalogen compounds in the extracts mainly appear in the process of chloro- form extraction. Dissolved matter mainly includes chloro-substituted aliphatic compounds, chloro （bromo）-substituted aromatic compounds and chloro-substituted heterocyclic compounds, their relative molecular mass is in the range of 94 to 250. The chloro-substituted heterocyclic com- pounds with smaller pores embedded and network embedded states occurrence are mainly distri- buted in the dense medium and loose medium components~ the chloro （bromo）-substituted aromatic compounds with smaller pores embedded state are mainly distributed in the heavy component; the chloro-substituted aliphatic compounds in three different occurrence states are distributed in all group components.

关 键 词：萃取反萃取法 有机卤化物 GC-MS 氯仿 

分 类 号：TQ533.6[化学工程—煤化学工程]