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罐底含油污泥萃取溶剂的选择与优化

Keywords: 罐底油泥,萃取,沸程,馏分

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Abstract:

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。

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