反应温度对草本类生物质水热碳化产物燃料品质的影响及其生成机理  

Effect of the reaction temperature on the fuel quality of hydrothermal carbonization products of herbaceous biomass and its producing mechanism

作　　者：吴俊全 迟铭书 宋晶攀 韩帅杰 郭怡卓 庞公铭 WU Jun-quan;CHI Ming-shu;SONG Jing-pan;HAN Shuai-jie;GUO Yi-zhuo;PANG Gong-ming(School of municipal&environmental engineering,Jilin Jianzhu university,Changchun 130118,China)

机构地区：[1]吉林建筑大学市政与环境工程学院,长春130118

出　　处：《吉林建筑大学学报》2024年第1期34-38,共5页Journal of Jilin Jianzhu University

基　　金：国家自然科学基金(52070088);吉林省科技发展计划项目(20230203047SF).

摘　　要：本文以玉米秸秆(CS)为原料,在180℃~270℃温度区间进行了水热碳化(HTC)实验,探究了反应温度对水热炭燃料品质的影响并推断了其生成机理。研究结果表明,温度的升高有效促进了水热炭热值和煤化程度的提升。随着水热反应温度的提升,半纤维素、纤维素及木质素的水解程度被增强,脱水形成糠醛、5-羟甲基糠醛(HMF)和酚类,而后再聚合形成含有芳香结构的二次碳球。同时,水热碳化工艺还促进了生物质中无机金属的脱除,进一步增强了其燃料利用价值。Corn straw(CS)was selected as the raw material for hydrothermal carbonization(HTC)experiment to explore the effect of the reaction temperature on the fuel quality of hydrochar in the temperature range of 180℃~270℃ and to speculate its producing mechanism.The results indicated that the increase of temperature effectively promoted thehigher calorific value and the degree of coal mineralization for hydrochar.With the increase of hydrothermal reaction temperature,the degree of hydrolysis of hemicellulose,cellulose and lignin was enhanced,and furfural,5-hydroxymethyl furfural(HMF)and phenols were formed by dehydration,then polymerizing secondary cokes with aromatic rings.In addition,the HTC process also increased the removal of inorganic metals in biomass,which further enhanced its fuel utilization value.

关 键 词：生物质利用 水热碳化(HTC) 反应温度 燃料品质 生成机理 

分 类 号：TK6[动力工程及工程热物理—生物能]