罐底含油污泥萃取溶剂的选择与优化  

Selection of solvents for extraction of crude oil tank bottom sludge

作　　者：巫树锋[1] 刘发强[1] 杨岳[1] 刘光利[1] 梁宝锋[1] 李常青[1] 江岩[1] 王军[1] 

机构地区：[1]中国石油天然气股份有限公司石油化工研究院兰州化工研究中心,兰州730060

出　　处：《环境工程学报》2013年第8期3191-3195,共5页Chinese Journal of Environmental Engineering

基　　金：中国石油炼油与化工分公司支撑项目(08-10-01-03)

摘　　要：针对某炼化企业在石油储运过程中产生的罐底油泥,进行了油泥样分析和不同萃取剂萃取回收油分实验。经分析该罐底油泥含水率约16.1%,总有机物含量约34.8%,其中可萃取石油类物质约占总有机物成分的67.0%。考察不同溶剂的萃取效果,结果表明,石脑油90～110℃沸程段的馏分油的萃取效果和工艺可操作性优越于其他常用溶剂,其萃取效果排序为石脑油90～110℃沸程段的馏分油>120#溶剂油>正庚烷>石油醚(90～120℃)>石油醚(60～90℃);用石脑油90～110℃沸程段的馏分油在优化萃取工艺条件下,经两次萃取可分离出大于96%的可萃取油分,罐底油泥中有机物的萃出率可达64%以上,比120#溶剂油萃取效果高出约3%～5%,实现了罐底油泥更深程度的萃取和资源化利用。Solvent extraction was used to recover oil from waste sludge generated from the storage of crude petroleum.The oily sludge had a water content of about 16.1%,total organic content was about 34.8%,of which about 67.0% was recoverable oil.Many solvents were used in the extraction of oily sludge,and the results showed that the 90～110℃ boiling range fractions of naphtha had a unique effect of solvent extraction.According to the efficiency of extraction,the solvents was sorted by 90～110℃ boiling range fractions of naphtha,120# solvent oil,n-heptane,petroleum ether（90～120℃）,petroleum ether（60～90℃）.Using 90～110℃ boiling range fractions of naphtha as solvent and under optimized conditions,more than 96% of recoverable oil could be recovered by twice extraction.And more than 64% of organic matter could be recovered in the total organic content of oily sludge,which was higher by 3%～5% than the effect of 120# solvent oil.The technology achieved a deeper level of resources of oily sludge generated during the storage,transportation of crude petroleum.

关 键 词：罐底油泥 萃取 沸程 馏分 

分 类 号：X703.1[环境科学与工程—环境工程]