摘要
分别以煤焦油为原料，在４３０℃热缩聚５０ｍｉｎ～２７０ｍｉｎ和以石油渣油为原料在 ３１０℃热缩聚１３０ ｍｉｎ～３７０ ｍｉｎ，制备了一系列具有相近软化点的煤焦油沥青和石油沥青．通过元素分析、软化点、族组成、偏光光学和ＮＭＲ对原料与沥青的结构进行了分析．在１．６ＭＰａ，４８０℃下将改质煤焦油沥青和石油沥青进行焦化，考察了焦收率和光学组织结构变化情况．结果表明，热缩聚可提高煤焦油沥青和石油沥青的软化点、不溶物含量和焦收率，煤焦油沥青与石油沥青成焦后均生成各向异性广域光学结构．
Coal tar pitch and petroleum pitch were prepared from petroleum residues and coal tar by thermal reactions respectively. Raw material and modified pitches were characterized by 1H-NMR, 13C-NMR ,softening point ,elemental analysis solubility ,and polarized microscope. The study of the pitches showed that the thermal reactions very effectively increases softening point ,insoluble content ,coke yield through dehydrogenative polymerization. Both series of pitches were carbonized at 480℃ under 1.6 MPa. The optical texture of coke obtained by from coal tar pitches and petroleum pitches all showed small domains.
出处
《煤炭转化》
CAS
CSCD
北大核心
2001年第4期80-83,共4页
Coal Conversion
基金
山西省青年基金资助项目(991027).
关键词
煤焦油
石油渣油
热缩聚
光学结构
软化点
coal tar, petroleum residues, thermal reaction, optical texture
