脱除煤沥青中3,4-苯并芘及其机理研究  

Removal of 3,4-Benzopyrene in Coal Tar Pitch and Mechanism Research

作　　者：宋健伟[1] 李其祥[1] 王红亮[1] 王智勇 伍林[1] 

机构地区：[1]武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北武汉430081 [2]河南省顺成集团煤焦有限公司,河南安阳455000

出　　处：《化学与生物工程》2014年第10期62-65,共4页Chemistry & Bioengineering

摘　　要：以聚乙二醇和三聚甲醛为复合改性剂,采用聚合物改性法脱除煤沥青中致癌多环芳烃3,4-苯并芘,在复合改性剂比例(聚乙二醇与三聚甲醛的比)为4∶6时脱除率可达76.0%。元素分析结果表明,改性煤沥青的C、S元素含量降低,H元素含量升高,C/H值和芳香度(fa)降低,说明改性煤沥青的软化点降低、体系的稳定性下降。红外光谱分析结果表明,聚乙二醇与3,4-苯并芘的反应属于O-烷基化反应,三聚甲醛与3,4-苯并芘的反应属于C-烷基化反应。Using polyethylene glycol and s-trioxane （proportion 4∶6）as complex modifier,carcinogenic pol-ycyclic aromatic hydrocarbon 3,4-benzopyrene in coal tar pitch was removed by polymer modified method with removal rate of 7 6.0%.The elemental analysis results showed that in modified coal tar pitch,C,S element con-tents decreased,H element content increased,C/H value and aromaticity （fa）decreased,indicated that the sof-tening point of modified coal tar pitch and the stability of the system decreased.IR Spectra analysis indicated that reaction between polyethylene glycol and 3,4-benzopyrene belonged to O-alkylation reaction,reaction be-tween s-trioxane and 3,4-benzopyrene belonged to C-alkylation reaction.

关 键 词：煤沥青 3 4-苯并芘 改性 烷基化反应 

分 类 号：TQ522.65[化学工程—煤化学工程] U414[交通运输工程—道路与铁道工程]