摘要
研究了3种生物质在不同O_(2)摩尔分数的O_(2)/N_(2)气氛下的着火特性,其中生物质粒径为500~700μm,O_(2)摩尔分数为21%、30%、50%、70%和100%。结果表明:O_(2)摩尔分数决定了生物质着火机理的转变,随着O_(2)摩尔分数的升高,稻谷壳、竹子和黄豆秆的着火机理分别在100%、70%和30%O_(2)摩尔分数下由均相着火转变为非均相着火。O_(2)摩尔分数能影响3种生物质的着火距离及燃尽时间,并且着火距离和燃尽时间均随O_(2)摩尔分数的增加而减小。
The ignition characteristics of three kinds of biomass were investigated under O_(2)/N_(2)atmosphere with different O_(2)mole fractions,where the biomass particle sizes ranged from 500 to 700μm and O_(2)mole fractions were 21%,30%,50%,70%and 100%.The results show that the O_(2)mole fraction determines the transformation of the biomass ignition mechanism.With the increase of O_(2)mole fraction,the ignition mechanism of rice husk,bamboo and soybean stalk changes from homogeneous ignition to heterogeneous ignition at 100%,70%and 30%O_(2)mole fraction,respectively.O_(2)mole fraction can affect the ignition distance and burnout time of the three kinds of biomass,and both the ignition distance and burnout time decrease with the increase of O_(2)mole fraction.
作者
李昊
经慧祥
卢丙举
邹春
Li Hao;Jing Huixiang;Lu Bingju;Zou Chun(Price-verification Center of Naval Armament Department,Beijing 100071,China;The 713 Research Institute of CSSC,Zhengzhou 450015,China;Henan Key Laboratory of Underwater Intelligence Equipment,Zhengzhou 450015,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《发电设备》
2022年第1期32-36,共5页
Power Equipment
基金
国家自然科学基金重点项目(51776081)。
关键词
生物质
增氧燃烧
着火机理
着火距离
燃尽时间
biomass
oxygen-enhanced combustion
ignition mechanism
ignition distance
burnout time
