不同溶剂和反应温度对污泥热液化制取生物质油性质影响研究

发布时间：2018-05-08 12:20

  本文选题：污泥热液化 + 溶剂　； 参考：《环境科学学报》2017年11期

【摘要】：选取4种溶剂(水、乙醇、正己烷、水-乙醇共溶济)作为污泥热液化制取生物质油的溶剂,分析溶剂种类和反应温度对热液化效果和生物质油性质的影响.结果表明:相同温度下,生物质油产率随溶剂种类变化趋势为:乙醇水-乙醇共溶剂正己烷水,最高产率为54.82%(乙醇溶剂,240℃).污泥有机物转化率随溶剂种类变化趋势为:水-乙醇共溶剂乙醇水正己烷,最高有机物转化率为96.40%(水-乙醇共溶剂,330℃).污泥经热液化处理后,碳、氢、氮、硫元素在生物质油中富集,氧含量下降,热值36 MJ·kg-1(乙醇、240℃除外).不同溶剂油成分差别较大,采用水或正己烷,产物主要是脂肪酸类、烷烃及部分酰胺和腈类,采用乙醇或水-乙醇共溶剂,产物主要是酯类、烷烃类.生物质油沸点集中分布在250~500℃,添加乙醇溶剂可显著提高生物质油轻组分含量.
[Abstract]:Four kinds of solvents (water, ethanol, n-hexane, water-ethanol co-solubilization) were selected as solvent to produce biomass oil by hot liquefaction of sludge, and the effects of solvent type and reaction temperature on thermal liquefaction and properties of biomass oil were analyzed. The results showed that under the same temperature, the yield of biomass oil varied with the type of solvent: ethanol water-ethanol co-solvent n-hexane water, the highest yield was 54.82% (ethanol solvent 240 鈩，

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