灵动型微波辅助玉米秸秆液化及特性的研究  

RESEARCH ON FLEXIBLE MICROWAVE ASSISTED LIQUEFACTION AND CHARACTERISTICS OF CORN STRAW

作　　者：李翔宇[1] 李学琴[1,2,3] 段喜鑫[1] 亓伟[4] 时君友[1] 雷廷宙[2,3] 

机构地区：[1]吉林省木质材料科学与工程省重点实验室(北华大学),吉林132013 [2]河南省科学院能源研究所有限公司,郑州450008 [3]河南省生物质能源重点实验室,郑州450008 [4]中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广州510640

出　　处：《太阳能学报》2017年第5期1453-1458,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(21376241);国家林业局948项目(2014-04-28);吉林省秸秆综合利用技术创新平台专项(吉高平合字【2014】C-1);国家科技支撑计划(2014BAD02B05)

摘　　要：为探索灵动型微波辅助玉米秸秆的液化过程及特性,以生物质玉米秸秆为原料,液化温度、液化时间、微波功率、固液比为影响因素设计单因素实验和正交实验,液化率为表征指标展开微波辅助玉米秸秆液化及特性的研究。对液化产物的理化性能进行分析,同时利用红外光谱(FT-IR)分析其官能团吸收峰的变化情况。结果表明,灵动性微波辅助玉米秸秆液化的最佳工艺条件为:液化温度150℃,液化时间15 min,液化功率600 W,固液比1∶5。在最佳工艺条件下,测得液化率为99.67%,液化产物羟值为314.16 mg(KOH)/g,酸值为45.78 mg(KOH)/g;通过FT-IR分析可知,玉米秸秆在微波辅助液化后基本完全降解,液化率较高;并且有新的官能团生成,可提高液化产物的活性,有利于后续加工利用。In order to explore the liquefaction process and characteristics of the flexible microwave assisted corn straw, this paper used biomass corn straw as raw material, liquefaction temperature, liquefaction time, microwave power, ratio of solid-liquid as influence factors to design single factor experiment and orthogonal experiment, using liquefaction rate as index to study on the liquefaction and characteristics of microwave-assisted corn straw, and the physic-chemical properties of liquefied products are analyzed. At the same time, the change of absorption peak of functional group was analyzed by infrared spectrum （FT-IR）. The result showed that the optimum process conditions for the liquefaction of corn stalk with the flexible microwave assisted is the liquefaction temperature at 150 ~C, the liquefaction time of 15 min, the liquefaction power of 600 W and the ratio of solid-liquid is 1 ： 5. Under the optimum process conditions, the liquefied rate is 99.67%, the hydroxyl value of liquefaction product is 314.16 mg（KOH）/gand the acid value is 45.78 mg（KOH）/g; By FT-IR analysis, the corn stalk is completely degraded after microwave assisted liquefaction and has very high liquefaction rate ; the new functional groups are also formed, which improved the activity of the liquefaction products and is beneficial to the subsequent processing and utilization.

关 键 词：生物质 玉米秸秆 灵动性微波 液化率 

分 类 号：TK6[动力工程及工程热物理—生物能]