离子液体作用下褐煤与生物质在亚临界水中共液化

doi:10.11949/j.issn.0438-1157.20141357

化工学报 ›› 2015, Vol. 66 ›› Issue (4): 1476-1483.DOI: 10.11949/j.issn.0438-1157.20141357

离子液体作用下褐煤与生物质在亚临界水中共液化

韩少华, 闫晓敏, 王宝凤, 张进军

山西师范大学化学与材料科学学院, 山西临汾 041004

收稿日期:2014-09-09 修回日期:2015-01-05 出版日期:2015-04-05 发布日期:2015-04-05
通讯作者: 王宝凤
作者简介:韩少华(1988-),男,硕士研究生。
基金资助:
教育部博士学科点专项科研基金项目(20091404120002);山西省青年科技基金项目(2011021008-1)。

Co-liquefaction of lignite and biomass in sub-critical water with ionic liquid

HAN Shaohua, YAN Xiaomin, WANG Baofeng, ZHANG Jinjun

School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, Shanxi, China

Received:2014-09-09 Revised:2015-01-05 Online:2015-04-05 Published:2015-04-05
Supported by:
support by the Research Fund for the Doctoral Program of Higher Education of China for New Teachers (20091404120002) and the Shanxi Province Science Foundation for Youths of China (2011021008-1).

摘要/Abstract

摘要：

选用小麦秸秆和金沟褐煤作为实验原料在间歇式高压反应釜中进行液化实验,考察了不同温度、不同秸秆/煤比例下添加离子液体时小麦秸秆与褐煤共液化产物分布情况及硫的变迁行为。研究结果显示:当小麦秸秆和褐煤在亚临界水中液化时,添加离子液体1-丁基3-甲基咪唑氯盐[Bmim]Cl会降低正己烷不溶组分收率,但可以提高气体收率与总转化率。添加[Bmim]Cl后,随着样品中小麦秸秆比例减少,液化油收率、正己烷不溶组分收率、四氢呋喃可溶组分收率、气体收率与总转化率均呈下降趋势。添加 [Bmim]Cl后残渣中硫的相对含量增加,其他产物中硫的相对含量减小;添加 [Bmim]Cl后残渣中有机硫的相对含量以及气相中COS和H₂S含量都随温度升高而增加。

关键词: 生物质, 褐煤, 离子液体, 液化, 产物分布

Abstract:

Co-liquefaction behavior of wheat straw and Jingou lignite was investigated in an autoclave. The product distribution and sulfur transformation at different temperatures or different blending ratios of wheat straw and lignite were studied. Adding [Bmim]Cl would make the yield of n-hexane insoluble fraction lower, while make gas yield and total conversion higher during co-liquefaction of lignite and wheat straw in sub-critical water. When decreasing the blending ratio of wheat straw, oil yield, yield of n-hexane insoluble fraction, yield of tetrahydrofuran soluble fraction, gas yield and total conversion all decreased. Moreover, adding ionic liquid [Bmim]Cl also could make the relative content of sulfur in the residue increase, while decrease the relative content of sulfur in other products. Furthermore,with increasing temperature, the relative content of organic sulfur in residue and the content of COS and H₂S in gas all increased when adding ionic liquid during co-liquefaction of lignite and wheat straw.

Key words: biomass, lignite, ionic liquid, liquefaction, product distribution

中图分类号:

TQ546.2

韩少华, 闫晓敏, 王宝凤, 张进军. 离子液体作用下褐煤与生物质在亚临界水中共液化[J]. 化工学报, 2015, 66(4): 1476-1483.

HAN Shaohua, YAN Xiaomin, WANG Baofeng, ZHANG Jinjun. Co-liquefaction of lignite and biomass in sub-critical water with ionic liquid[J]. CIESC Journal, 2015, 66(4): 1476-1483.

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离子液体作用下褐煤与生物质在亚临界水中共液化

Co-liquefaction of lignite and biomass in sub-critical water with ionic liquid

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