摘要
精制煤焦油经空气氧化法得到一系列不同软化点的氧化沥青,对精制煤焦油和氧化沥青进行1 H-NMR、灰分、真密度、元素分析和族组成等分析.结果表明,空气吹扫可促进脱氢缩合反应和交联反应的进行,随着氧化程度的不同,氧化沥青的软化点、组成和结构也不同.精制煤焦油和氧化沥青经焦化反应和煅烧反应后得到煅后焦,对煅后焦的性能和形貌等进行分析,并探究氧化沥青对焦化行为的影响.结果表明,选择合适氧化度的氧化沥青为原料,可生成优质的各向同性焦.
A series of air-blown pitches with different softening points were prepared from the refined coal tar.The air-blown pitches and the refined coal tar were analyzed by 1 HNMR,elemental analysis,group composition,ash and true density measurement.The results show that the air blowing promotes the dehydrogenative condensation reaction and the cross-linking reaction.As changing the oxidation level,the softening point,composition and structure of the air-blown pitches changes.Calcined coke can be produced by the pyrolysis of the air-blown pitches.The good quality isotropic coke could be prepared by selection of suitable air-blown pitches as raw materials.
出处
《煤炭转化》
CAS
CSCD
北大核心
2015年第4期62-65,共4页
Coal Conversion
关键词
煤焦油
氧化沥青
各向同性焦
coal tar
air-blown pitches
isotropic coke
