煤焦油超临界甲醇抽提反应过程特性的研究  

STUDY ON THE REACTION PROPERTIES OF COAL TAR IN SUPERCRITICAL METHANOL

作　　者：何选明[1] 李铁鲁[1] 王宽强 秦瑾[1] 张华军[1] 

机构地区：[1]武汉科技大学湖北省煤转化与新型炭材料重点实验室,武汉教授430081 [2]济宁碳素集团公司,山东济宁助理工程师272100

出　　处：《煤炭转化》2011年第2期59-63,共5页Coal Conversion

摘　　要：在间歇式高压反应釜中,用超临界甲醇对高温煤焦油进行抽提处理,并对产物进行族组分分离,考察温度、压力和时间等反应条件对反应过程特性的影响,用元素分析仪和FT-IR对富集产物进行分析.结果发现,在实验条件下,用超临界甲醇对高温煤焦油进行处理,可以在温和条件下使煤焦油实现一定程度的轻质化,轻油收率从原料煤焦油的65.10%升高至78.19%,H/C比原煤焦油中轻油组分提高了28.24%,比原煤焦油提高了109.62%.压力和温度对产物的分布影响很大,温度的升高不利于轻油组分收率的增加;升高压力,可以得到更多的轻油组分.反应时间对产物分布的影响不大.FT-IR表明,通过超临界抽提,可以使大量高附加值产品在轻油组分中得以富集,有利于煤焦油进一步的加工利用.In the batch autoclave, high temperature coke-oven coal tar was extracted by supercritical methanol, and separated products using clan component separation, investigated the affect to the reaction characteristics impacted by reaction conditions such as temperature, pressure, time, etc. and analyzed the enrichment products with FTIR and elemental analyzer. The results showed that processing high temperature coal tar with supercritical methanol, coal tar in mild conditions can be upgraded in some extent, the yield of light oil was up to 78. 19% comparing with 65.10% from coal tar in raw materials, H/C ratio increased 28.24% comparing with the light oil in raw coal tar and increased 109.62% comparing with the raw coal tar pressure and temperature have a great influence on the distribution of the product. The rising temperature is not conducive to increasing the yield of light oil fractions; lifting pressure can gained more light oil component~ reaction time has little effect on product distribution in experimental conditions. FT-IR shows that after supercritical extraction, a large number of high value-added products can be enriched in the light oil fractions and that is conducive to further processing and utilization of coal tar.

关 键 词：煤焦油 超临界 甲醇 FT—IR 

分 类 号：TQ522.63[化学工程—煤化学工程]