摘要
借助GC-MS手段分析陕北中/低温煤焦油酚类化合物组成和分布情况.通过常减压蒸馏,将陕北中低温煤焦油切割成170℃～230℃,230℃～270℃,270℃～300℃,300℃～340℃和340℃～360℃五个窄馏分并计算收率,并用酸碱抽提法提取各窄馏分中的酚油;通过GC-MS分析了酚油中酚类化合物的组成及分布情况.结果表明,五个窄馏分分别检测出23,23,15,18和10种酚类化合物,酚类化合物占其所在馏分酚油的比率分别为96.89%,60.01%,50.90%,36.51%和36.37%.焦油中所含的酚类化合物占焦油总量的12.91%,酚类化合物主要为低级酚、C3～C4烷基苯酚和萘酚.
The composition and distribution of phenolic compounds in middle/low temper- ature coal tar from Northern Shaanxi was investigated by GC-MS. Five fractions were isolated from middle/low temperature coal tar from Northern Shaanxi by distillation into 170℃-230 ℃, 230℃-270 ℃, 270 ℃-300℃, 300 ℃-340 ℃ and 340 ℃-360 ℃ respectively and figured out the ratio. Soda wash method was used to extract the phenolic compounds in each fractions and the crude phenols was analyzied by GC-MS. It was found that 23, 23, 15, 18 and 10 types of phenolic compounds corresponding to the crude phenols of the five fractions, which contributed the 96.89 %, 60.01%, 50.90%, 36.51% and 36.37 % of the corresponding crude phenols of the five fractions. And these phenolic compounds accounting for 12.91% of the low temperature coal tar. The main phenolic compounds in the low temperature coal tar were low-rank phenols,C3-C4 alkylphenols and naphthols.
出处
《煤炭转化》
CAS
CSCD
北大核心
2013年第2期67-70,共4页
Coal Conversion
基金
中央高校基本科研业务费专项资金资助项目(12CX06047A)
关键词
中
低温煤焦油
GC—MS
酚类化合物
馏分切割
middle/low temperature coal tar, GC-MS, phenolic compounds, fractions separated
