Sub- and supercritical liquefaction of rice straw in the presence of ethanol–water and 2-propanol–water mixture
Sub- and supercritical liquefaction of rice straw in the presence of ethanol–water and 2-propanol–water mixture
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DOI：
10.1016/j.energy.2007.04.011
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发表时间：
2007-11
期刊：
影响因子：
9
通讯作者：
Xingzhong Yuan;Hui Li;G. Zeng;J. Tong;W. Xie
中科院分区：
文献类型：
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作者：
Xingzhong Yuan;Hui Li;G. Zeng;J. Tong;W. Xie
在1000 ml高压釜中，分别在533- 623 K、6- 18 MPa条件下，研究了亚超临界和超临界混合溶剂（乙醇-水和异丙醇-水）对稻草液化制生物油的影响。结果表明，在573 K下，当异丙醇与水的体积比为5：5时，生物油的产率最高，为39.7%，生物油的高热值（HHV）随反应温度和溶剂体积比的增加而增加。通过混合物减少了低沸点物质的形成。采用1：9-5：5的混合物可以抑制残留物的形成，促进稻草的转化。采用GC/MS和元素分析仪对生物油进行了分析，并利用扫描电镜观察了残渣的形态变化。
The critical liquefaction of rice straw to bio-oil with sub- and supercritical mixtures (ethanol–water and 2-propanol–water mixture) was studied in a 1000ml autoclave at 533–623K, 6–18MPa, respectively. The results showed that the maximum yield of bio-oil was 39.7% for the 2-propanol:water volume ratio of 5:5 at 573K, while the higher heating value (HHV) of bio-oil increased with the reaction temperature and solvent volume ratio. The formation of low-boiling-point materials was reduced by a mixture. Using a mixture could inhibit the formation of residue and then promote the conversion of rice straw with the ratio of 1:9–5:5. The bio-oil was analyzed by GC/MS and Elemental Analyzer, while the morphological changes of residue were observed by a scanning electron microscope (SEM).