麦渣与制浆废液共混制备成型颗粒燃料及其燃烧特性分析  

Analysis on Combustion Characteristics of Pellet Fuel Prepared by Blending Wheat Residue and Pulping Waste Liquid

作　　者：薛蓝馨 侯慧敏 林兆云 杨桂花[1] 吉兴香[1] 陈嘉川[1] XUE Lanxin;HOU Huimin;LIN Zhaoyun;YANG Guihua;JI Xingxiang;CHEN Jiachuan(State Key Laboratory of Biobased Material and Green Papermaking/Key Lab.of Pulp&Paper Science and Technology of Education Ministry of China,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]齐鲁工业大学(山东省科学院)生物基材料与绿色造纸国家重点实验室/制浆造纸科学与技术教育部重点实验室,山东济南250353

出　　处：《生物质化学工程》2023年第1期35-41,共7页Biomass Chemical Engineering

基　　金：国家重点研发计划资助项目(2019YFC1905904);山东省科教产融合创新试点工程(2020KJC-ZD14);泰山学者工程(无编号)。

摘　　要：为研究麦渣与制浆废液共混制备的成型颗粒燃料的燃烧特性,通过热重分析法对其燃烧热力学及燃烧动力学进行了研究。结果表明:制浆废液的添加使颗粒燃料出现固定碳的二次燃烧阶段,有利于降低成型颗粒燃料的挥发分、固定碳燃烧阶段的点火温度及最大燃烧速率温度,对颗粒燃料的燃烧有正向协同作用;制备的颗粒燃料的一阶动力学模型拟合曲线的相关系数在0.95以上,颗粒燃料在挥发分燃烧和固定碳燃烧阶段的活化能和指前因子均随制浆废液的添加而降低。当废液固形物质量分数为53%时制备的成型颗粒燃料,其挥发分燃烧阶段和固定碳燃烧阶段的活化能为72.85和83.52 kJ/mol,指前因子为2.82×10^(6)和3.73×10^(5) min^(-1)。制浆废液的添加使颗粒燃料更易燃烧,且燃烧过程稳定不易爆燃。In order to study the combustion characteristics of pellet fuel prepared by blending wheat residue and waste liquid in pulping process,the combustion thermodynamics and kinetics characteristics were analyzed by thermogravimetric test.The results showed that pulping waste liquid resulted in the secondary combustion stage of fixed carbon in the pellet fuel.The addition of pulping waste liquid was helpful to decrease the volatile content of pellet fuel,the ignition temperature,and maximum combustion rate temperature in the fixed carbon combustion stages,which had a positive synergistic effect on the combustion of pellet fuel.The thermogravimetric data were fitted with a first-order dynamics equation,and the correlation indexes of the prepared pellet fuel were all above 0.95.The addition of the pulping waste liquid reduced the activation energy and frequency factors of the pellet fuel in the volatile combustion and fixed carbon combustion stages,respectively.The activation energies of the corresponding stage when a solid mass fraction of 53%of the waste liquid were 72.85 and 83.52 kJ/mol,and the frequency factors were 2.82×10^(6)and 3.73×10^(5)min^(-1),respectively.The addition of the pulping waste liquid made the pellet fuel easier to burn,and the combustion process became stable and uneasy to deflagrate.

关 键 词：麦渣 制浆废液 颗粒燃料 热重分析 燃烧动力学 

分 类 号：TQ35[化学工程] TK6[动力工程及工程热物理—生物能]