胜利褐煤与玉米秸秆的共液化性能  

co-Liquefaction Properties of Shengli Lignite and Corn Straw

作　　者：赵野[1] 吴诗勇[1] 覃小刚 李良[1] 吴幼青[1] 高晋生[1] 

机构地区：[1]华东理工大学资源与环境工程学院、煤气化及能源化工教育部重点实验室,上海200237 [2]东方电气集团东方锅炉股份有限公司,成都611731

出　　处：《华东理工大学学报（自然科学版）》2014年第4期414-420,共7页Journal of East China University of Science and Technology

基　　金：中央高校基本科研业务费专项资金资助(WA1214037)

摘　　要：在微型振动反应釜内,在铁基催化剂存在下,考察了玉米秸秆质量分数和反应温度对胜利褐煤和玉米秸秆共液化性能的影响,并通过液化产物的红外光谱研究了玉米秸秆和胜利褐煤共液化协同效应的机理。结果表明:秸秆和褐煤共液化存在正协同效应,协同效应随着秸秆质量分数的增加而增强;当反应温度为375℃、初始氢压为4MPa、反应时间为0.5h和秸秆质量分数为90%时,油产率高出对应的加权平均值5.87%;反应温度的变化对不同液化产物的协同效应影响不同,低温时协同效应主要体现在促进沥青质的生成,高温时则体现在促进油的生成;通过红外光谱分析液化产物得出秸秆裂解的自由基能促进褐煤中大分子芳香结构裂解,但在促进过程中并没有发生供氢反应;共液化过程中协同效应部分体现在前沥青烯中酚类物质的转化。Effects of corn straw （CS） mass fraction and temperature on the co-liquefaction behaviors of Shengli lignite （SL） and CS over the iron-based catalyst were studied in a vibration micro-reactor. The mechanism of synergistic effect of SL and CS during co liquefaction was studied by Fourier transform infrared spectroscopy. The results indicate that there exits an obvious synergistic effect between SI. and CS, which is enhanced with increasing CS mass fraction. At the reaction temperature of 375℃, the initial hydrogen pressure of 4 MPa, the reaction time of 0.5 h, and the CS mass fraction of 90%, the yield of oil is 5.87% higher than the corresponding arithmetic mean values from the individual liquefaction of SL and CS. The synergistic effect depends on the reaction temperature. The yield of asphaltene and preasphaltene is increased by synergistic effect at low temperature, while more oils are produced at high temperature. From infrared spectroscopy, the free radicals of CS pyrolysis can promote the pyrolysis of macromolecule aromatic structure from Sir, but the hydrogen reaction does not occur in this promoting process. The conversion of phenol substance in the preasphaltene partly results from the synergistic effect.

关 键 词：胜利褐煤 玉米秸秆 共液化 红外光谱 

分 类 号：TQ530.2[化学工程—煤化学工程]