中南大学学报（自然科学版）Issue(1)：279-285,7.DOI:10.11817/j.issn.1672-7207.2016.01.038
流化床内生物质石英砂混合流动压力脉动频谱特性
Frequency spectrum characteristics of pressure fluctuation in fluidized bed with biomass particles and quartz sands
摘要
Abstract
To research the influences of fluid characters on fluidized bed added biomass particles, the pressure fluctuation spectrum behaviors at different static bed heights and biomass weight were investigated in a rectangular fluidized bed. The quartz sands with the diameter of 0.8 mm and cylinder-shaped biomass particles with both of the diameter and length of 10 mm were adopted as bed materials. The results show that power spectral density has an obviously main frequency between 0−5 Hz when the static bed height is high and without biomass particles. The main frequency of the power spectral density disappears completely, when the static bed height is low and a small amount of biomass is added. But an obvious main frequency occurs when a large amount of biomass is added. When the static bed height is high, the biomass particles influence the flow of gas only at a low superficial gas velocity.关键词
流化床/生物质颗粒/混合流动/压力脉动/功率谱密度Key words
fluidized bed/biomass particles/mixed flow/pressure fluctuation/power spectral density分类
化学化工引用本文复制引用
王肖祎,仲兆平,王泽宇,赵凯..流化床内生物质石英砂混合流动压力脉动频谱特性[J].中南大学学报（自然科学版）,2016,(1):279-285,7.基金项目
国家自然科学基金资助项目(51276040, U1361115)(Projects(51276040, U1361115) supported by the National Natural Science Foundation of China) （51276040, U1361115）
