振动流化床中磷石膏颗粒流态化性能研究  

Study on fludization properties of phosphogypsum particles in vibro-fluidized bed

作　　者：贾辉[1] 刘少文[1,2] 吴元欣[2] 

机构地区：[1]武汉工程大学化工与制药学院,绿色化工过程教育部重点实验室,湖北武汉430073 [2]黄冈师范学院化工学院

出　　处：《无机盐工业》2013年第1期47-49,共3页Inorganic Chemicals Industry

基　　金：湖北省自然科学基金重点项目(2011CDA036)

摘　　要：在振动流化床中进行了磷石膏颗粒流态化性能的冷模实验研究。结果表明,磷石膏颗粒在普通流化床中流化性能很差,难以实现正常的流化态,不适合在普通流化床中进行流态化分解反应。而振动的引入极大地改善了磷石膏颗粒的流态化性能。并考察了振幅和进料高径比对磷石膏颗粒的床层压降、膨胀比、最小流化速度的影响。为热模实验条件的选择提供了理论基础。The fluidization properties of phosphogypsum （PG） particles in vibro-fluidized bed （VFB） was studied by cold- state experiment.Results showed that the fluidization performance of PG particles was very poor in the ordinary fluidized bed, and it was difficult to achieve normal fluidized state.Therefore it was not suitable for fluidized decomposition of PG in ordinary fluidized bed.However, the introduction of vibration energy can greatly improve the fluidized performance of PG particles. The influences of amplitude and feed height-diameter ratio on bed pressure drop ,expansion ratio ,and the minimum fluidization velocity of PG particles were investigated.It provided a theoretical basis for selection of experimental conditions of the thermal model experiment.

关 键 词：振动流化床 磷石膏 流化态 冷模实验 

分 类 号：TQ051.1[化学工程]