可再生能源2025，Vol.43Issue(7)：861-868,8.
基于聚光光热颗粒燃烧系统的粒径对牛粪颗粒燃烧特性影响研究
Study on the effect of particle size on the combustion characteristics of cattle manure particle based on a concentrating photothermal particle combustion system
摘要
Abstract
To realize the efficient and clean utilization of biomass particle fuels in agricultural and pastoral areas,it is necessary to fully understand the effect of particle size on its combustion process.Through the self-designed concentrating photothermal particle combustion experimental system,we explored the impact of different sizes on cattle manure particles'combustion and gas emission characteristics.The results show that the release of volatile is delayed and the ignition and burnout temperatures and corresponding times increase with increasing particle size.In addition,with increasing of particle size,the surface ignition temperature of the particles was higher than that of the interior.The degree of separation between the internal and external combustion processes of the particles increased,resulting in an increase in the internal temperature of the particles during the char combustion stage.The increase in particle size increases the axial thermal resistance inside the particles,leading to a rise in the difference between the particles'surface and internal ignition and burnout temperatures.As particle size increases,the peak time and intensity of CO and NO emissions rise,but the total amount of CO and NO produced does not grow in the same proportion as the particle mass,and an increase in particle size results in the suppression of CO emissions and an increase in NO emissions and the conversion rate of fuel-N.关键词
生物质/牛粪颗粒/粒径/燃烧特性/烟气排放特性Key words
biomass/cattle manure particle/particle size/combustion characteristics/gas emission characteristics分类
能源科技引用本文复制引用
张子晗,赵斌,黄永锋,刘冬,徐俊,汪一,胡松,向军..基于聚光光热颗粒燃烧系统的粒径对牛粪颗粒燃烧特性影响研究[J].可再生能源,2025,43(7):861-868,8.基金项目
国家自然科学基金项目(52076097) （52076097）
浙江大学能源清洁利用全国重点实验室开放基金(ZJUCEU2023022) （ZJUCEU2023022）
湖南省研究生科研创新项目(CX20220928). （CX20220928）
