低温煤焦油组分分离及性质分析

Separation and Character Analysis of Low Temperature Coal Tar Composition

研究了低温煤焦油组成及其分布情况,采用减压蒸馏分离,切取<150℃、150～200℃、200～250℃、250～300℃、300 350℃、350～400℃6段馏分,各馏分物采用GC-MS联用仪分析。结果表明,低温煤焦油中组分含量在0.30%以上的有140种;250～300℃时馏分量最高29.70%;150～200℃时馏分中组分含量在0.30%以上的有38种;低温煤焦油烷烃含量可达34.00%,切取温度为250～300℃;酚类化合物含量为11.89%,切取温度为150～200℃。

Low temperature coal tar is used to analyze its composition and distribution.Low temperature coal tar isdistilled into <150℃,150～200℃,200～250℃,250～300℃,300～350℃,350～400℃six fractions which could beanalyzed by gas chromatography-mass spectrometry(GC-MS) in decompression distillation.The analyses show that lowtemperature coal tar contains 140 compounds in which mass fractions are >0..30%.The composition reaches 29.70%at250～300℃;There are 38 mass fractions for >0.30%at 150～200℃;low temperature coal tar has 34.00%alkylhydrocarbonat 250～300℃and 12.00%phenols at 150～200℃.