不同沉积环境煤的低温煤焦油的性质表征  

Characterization of Low-Temperature Coal Tars Derived from Pyrolysis of Coals Exploited in Different Depositional Environments

作　　者：潘晓磊[1] 杜开欢[1] 王胜春[1] 张德祥[1] 

机构地区：[1]华东理工大学能源化工系煤气化教育部重点实验室,上海200237

出　　处：《石油化工》2011年第7期785-789,共5页Petrochemical Technology

基　　金：国家自然科学基金项目(20576039);国家高新技术研究发展计划项目(2006AA05Z314);国家重点基础研究发展规划项目(2011CB201304)

摘　　要：对两种低温煤焦油进行了基础物性分析,采用双球计量管法测定了低温煤焦油馏分中的酚含量,用溶剂萃取法将120～320℃的馏分分离为酸性组分、碱性组分和中性组分,并用气相色谱-质谱联用仪对各组分进行定性分析。实验结果表明,两种低温煤焦油中碱性组分含量很少(质量分数分别为1.23%和1.41%),酸性组分和中性组分含量较高;弱还原程度的陕北煤的低温煤焦油中,酸性组分的质量分数为25.19%,中性组分中二甲基萘的质量分数为10.72%;强还原程度的淮南煤的低温煤焦油中,酸性组分的质量分数为15.82%,中性组分中二甲基萘的质量分数高达16.49%;不同还原程度的煤低温热解焦油性质存在较大的差异。Properties of the low-temperature coal tars derived from pyrolysis of the coals exploited in two different deposifional environments were characterized. The phenol contents in the low-temperature coal tars were determined by means of dual-ball measuring pipe. The fractions in the temperature range of 120- 320℃ in the tars were separated into three groups by solvent extraction method, namely acidic compounds, basic compounds and neutral compounds. The results showed that the contents of the basic compounds in the two tars were only 1.23% and 1.41%, while contents of both the acidic compounds and the neutral compounds were higher. The main components in the acidic compounds and the neutral compounds were determined by means of GC-MS. The contents of the acidic compounds in the tars derived from Shanbei and Huainan coals were 25. 19% and 15. 82%, respectively. The content of dimethyl naphthalene coal tars was 10.72%, while that in the Huainan in the neutral compounds obtained from the Shanbei coal tars could reach 16.49%.

关 键 词：煤热解 沉积环境 低温煤焦油 气相色谱-质谱 

分 类 号：TQ523[化学工程—煤化学工程]