玉米秸秆低温热解制备生物质炭的特性研究
发布时间：2019-05-11 16:04
【摘要】：玉米秸秆资源丰富,为了对其进行开发,利用自制的低温炭化装置,制备了不同低温热解的生物质炭,分析了生物质炭的产率、元素组成、工业组成、比表面积和表面形貌,以期了解玉米秸秆低温生物质炭特性及其随热解温度的变化规律。结果表明:热解温度显著影响玉米秸秆生物质炭的理化特性,随热解温度的升高,玉米秸秆生物质炭的产率从220℃的79.8%下降到270℃的71.2%,生物质炭中C元素含量显著增加,而H和O元素含量下降,N和S的含量变化不大,H/C和O/C摩尔比逐渐下降;生物质炭挥发分含量降低,固定碳含量升高;生物质炭比表面积普遍较低,在3.8~4.4 m~2/g;生物质炭表面形态变化不明显,粗糙程度略有增加。
[Abstract]:Corn straw is rich in resources. In order to develop corn straw, biomass carbon with different low temperature pyrolysis was prepared by using self-made low temperature carbonization device. The yield, element composition, industrial composition, specific surface area and surface morphology of biomass carbon were analyzed. In order to understand the characteristics of low temperature biomass carbon of corn straw and its variation with pyrolysis temperature. The results showed that the pyrolysis temperature significantly affected the physical and chemical properties of corn straw biomass carbon. With the increase of pyrolysis temperature, the yield of corn straw biomass carbon decreased from 79.8% at 220 鈩，
本文编号：2474642
[Abstract]:Corn straw is rich in resources. In order to develop corn straw, biomass carbon with different low temperature pyrolysis was prepared by using self-made low temperature carbonization device. The yield, element composition, industrial composition, specific surface area and surface morphology of biomass carbon were analyzed. In order to understand the characteristics of low temperature biomass carbon of corn straw and its variation with pyrolysis temperature. The results showed that the pyrolysis temperature significantly affected the physical and chemical properties of corn straw biomass carbon. With the increase of pyrolysis temperature, the yield of corn straw biomass carbon decreased from 79.8% at 220 鈩，
本文编号：2474642
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