摘要
文章采用高温热台显微镜系统原位研究了生物质颗粒升温过程中载热体对生物质颗粒表观形态变化的影响,探究了CO_(2)气氛,不同温度下载热体供热对生物质颗粒气化反应特性的影响。研究结果表明:在生物质颗粒升温过程中,载热体对生物质颗粒的表观形态变化存在抑制效果,面积收缩率变化速率峰值对应的温度升高50℃左右;在生物质颗粒气化过程中,由于木质素热解,在600~700℃时,生物质颗粒在载热体上的气化速率表现为先快后慢,然后经历短暂的快速气化后,气化反应结束;在750~850℃时,生物质颗粒在载热体上的面积收缩率变化趋势与生物质颗粒单独气化时几乎相同,在载热体供热情况下,生物质颗粒受石墨化影响较小。
This study used a high-temperature stage coupled with optical microscope system to investigate in situ the effect of the heat carrier on the apparent morphological changes of biomass particles during the heating process,and explored the influence of CO_(2)atmosphere and different temperatures of the heat carrier heating on the gasification reaction characteristics of biomass particles.The results indicate that during the heating process of biomass particles,the heat carrier has an inhibitory effect on the apparent morphological changes of biomass particles,and the temperature corresponding to the peak rate of area shrinkage change increases by about 50℃.In the process of biomass particles gasification,due to lignin pyrolysis,the gasification rate of biomass particles on the heat carrier shows a first fast and then slow trend at a temperature of 600~700℃,and then undergoes a brief period of rapid gasification before the gasification reaction ends.When the temperature reaches 750~850℃,the trend of area shrinkage rate of biomass particles gasification on the heat carrier is almost the same as that of biomass particles gasification without heat carrier.Under the heating condition of the heat carrier,biomass particles is less affected by graphitization and the reaction is more complete.
作者
王赵鹤
宋旭东
白永辉
唐广军
吕鹏
王焦飞
鲍卫娜
苏暐光
于广锁
Wang Zhaohe;Song Xudong;Bai Yonghui;Tang Guangjun;LüPeng;Wang Jiaofei;Bao Weina;Su Weiguang;Yu Guangsuo(State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,College of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,China;Shandong Yankuang Guo Tuo Science&Engineering Co.,Ltd.,Jining 272000 China;Institute of Clean Coal Technology,East China University of Science and Technology,Shanghai 200237,China)
出处
《可再生能源》
北大核心
2025年第6期719-726,共8页
Renewable Energy Resources
基金
宁夏自然科学基金项目(2022AAC03043)
国家自然科学基金重点项目(U21A20318)。
关键词
生物质
载热体
气化
原位研究
biomass
heat carrier
gasification
in situ study
