中国电机工程学报2011，Vol.31Issue(32)：8-15,8.
增压流化床热态临界流化速度的实验研究
Experimental Study on Minimum Fluidization Velocity at Elevated Pressure and High Temperature
摘要
Abstract
An experimental study of the influence of pressure and temperature on umf was carried out in a bubbling fluidized bed,with an inner diameter of 80 mm in the range of operating absolute pressure 0.1~0.6？MPa and temperature 20~800？℃ with quartz and ceramic sand of different size particles.The results show that： at a given temperature,umf decreases with increasing pressure,at a given pressure,the effect of temperature on umf is dependent on the material.A thorough literature survey on the correlations of umf was presented.It is found that the differences between predicted umf and the experimental value are significant.Based on Ergun equation and conclusion of the reference about voidage at minimum fluidization velocity,an equation about umf was proposed,and then a reasonable calculation steps about umf at elevated pressure and temperature was given.The discrete degree between predicted umf and experimental results is in the range of 10%.It is useful for the design and operation of the pressured fluidized bed reactor.关键词
增压流化床/临界流化速度/高温/计算模型Key words
pressured fluidized bed/minimum fluidization velocity/high temperature/calculation model分类
信息技术与安全科学引用本文复制引用
李皓宇,阎维平,王春波,王彦彦..增压流化床热态临界流化速度的实验研究[J].中国电机工程学报,2011,31(32):8-15,8.基金项目
国家高技术研究发展计划项目（863项目)（2009AA05Z310) （）
新世纪优秀人才支持计划项目（NCET-08-0770) （）
中央高校基本科研业务费专项资金资助（10QX38)~~ （）
