农业机械学报2017，Vol.48Issue(4)：276-283,8.DOI:10.6041/j.issn.1000-1298.2017.04.036
生物炭与木质素混合成型及其燃烧特性研究
Molding Fuel and Combustion Characteristics of Biochar and Lignin
摘要
Abstract
With the increasing depletion of fossil energy,people pay more and more attention to renewable energy.Biomass energy is considered to be the most potential energy,which is a research hotpoint for its cleanness,efficiency and safety.The development and utilization of biomass energy plays an important role in achieving sustainable development,improving the living environment and reducing carbon dioxide.Owing to the flourishing pore structure,biochar as a main product of biomass conversion has been widely used in the fields of adsorption separation,catalytic carrier and fuel and so on.The biochar prepared from Camellia oleifera shell pyrolysis and adhesive as raw materials was molded by using universal testing machine.By analyzing the compressive strength,relax density and specific energy consumption of molding fuel,the effects of different adhesives on physical quality of molding fuel were made sure.The influence of molding pressure,temperature,moisture content and lignin content was studied with lignin as molding fuel adhesive.The results showed that the fuel quality was the best at molding pressure of 6 kN,molding temperature of 80 ～ 100℃,moisture content of 20％ and lignin content of 8％ ～9％.Scanning electron microscopy (SEM) was used to study the microstructure of the fuel.The results showed that lignin can promote the formation of carbon powder particles,the structure of the fuel is complete and the surface is smooth.The combustion characteristics and kinetics of the fuel were studied by thermogravimetric analysis.The results showed that the combustion process included four periods:the dehydration stage of the raw material,the precipitation and combustion of volatile components,the combustion stage of the fixed carbon and the burnout stage,and the ignition temperature and burnout temperature was 356.9℃ and 553.3℃,respectively.The volatile combustion was a first order reaction,and the fixed carbon combustion was a two stage reaction.The significance of the research was to provide theoretical basis for the preparation of biomass carbon fuel which was easy to transport and storage.关键词
油茶壳/生物炭/木质素/成型燃料/热重分析/燃烧动力学Key words
Camellia oleifera shell/biochar/lignin/molding fuel/thermogravimetric analysis/combustion kinetics分类
能源科技引用本文复制引用
秦丽元,张世慧,高忠志,蒋恩臣..生物炭与木质素混合成型及其燃烧特性研究[J].农业机械学报,2017,48(4):276-283,8.基金项目
“十二五”国家科技支撑计划项目(2014BAD06B04)、黑龙江省科学基金项目(QC2015049)、东北农业大学博士基金项目(2012RCB97)、黑龙江省教育厅科学技术研究项目(12531002)和东北农业大学青年才俊项目(14QC36) （2014BAD06B04）
