摘要
采用酸碱法抽提陕北中低温煤焦油轻油和重油中的酚类物质．将轻油和重油蒸馏切割成170℃～240℃，240℃～270℃，270℃～300℃三个馏分，对三个馏分分别进行了总酚含量测定．通过最小碱油比的测定得出使一定量馏分油完全反应所需最小碱用量．设计了正交实验，得出每个馏分的最佳碱洗条件．在最佳碱洗条件下，酸碱洗涤得到轻油三个馏分酚油收率为29．21％，19．70％和16．95％；对应馏分油中总酚的回收率为95．05％，93．19％和90．30％；重油三个馏分酚油收率为58．40％，40．99％和41．55％；对应总酚回收率为91．19％，87．74％和85．83％．对脱酚油的GC／MS分析，验证了酸碱法对中低温煤焦油中酚类物质进行了有效抽提．
ABSTRACT Phenols in I.-tar and H-tar of low temperature coal tar from Shanbei was ex tracted by soda wash method. The L-tar and H-tar were distilled into 170 ℃-240℃, 240℃- 270℃ and 270℃-300℃ fractions. And the total phenol content in these fractions were evalua- ted. The minimum amount of soda that completely reactioned with certain fraction oil was deter- mined by the minimum soda-oil ratio. The best extraction condition was got by the orthogonal ex periment. The yields of crude phenols from the fractions of L tar were 29. 21%, 19. 7%, 16.95% under the best extraction condition, and the yields were 95. 05%, 93. 19%, 90. 30%, corresponding to the total phenols in the fractions. For H-tar, the yields of crude phenols were 58.40%, 40.99%, 41.55%, and the yields were 91.19%, 87.74%, 85. 83%, corresponding to the total phenols in the fractions. It is proved that phenols were extracted completely from low temperature coal tar by soda wash method through GC/MS analysis of soda washed oil
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第1期34-38,共5页
Coal Conversion
基金
国家科技部支撑计划项目(2009BAA20B02)
陕西省重大科技创新项目专项资金资助项目(2009ZKC04-06)
陕西省科学技术研究发展计划项目(2010K01-082)
关键词
馏分
最小碱油比
酚油
正交实验
fractions, the minimum soda oil ratio, crude phenols, the orthogonal experiment
