• 作者： Wang, Rong-Chi; Huang, Fu-Chang
• 中文摘要： 本研究是以多孔式及穿孔式分散板來探討氣固流體化床內兩種不同粒子分布。實驗是在內徑8.8公分的流體化床中進行,並以大小、密度不同的兩種粒子作流體化介質。實驗參數包括操作時間、氣體流速、粒子相對質量、分散板開孔比和孔徑。實驗結果顯示分散板孔徑及開孔比對於床內兩種粒子混合有很大的影響。在相同的操作條件下,低開孔比或孔數少的穿孔板可以得到較好的粒子混合。當開孔比一樣時,在某一氣體流速下,較大孔徑的穿孔板可以促進粒子混合。根據本研究的結果,粒子混合不僅隨氣泡大小,也隨分散板上噴氣現象而有影響。
• 英文摘要： Particle concentration profiles were investigated in this study while the bed was equipped with either porous or perforated plate distributors. All of the experiments were carried out in an 88mm I.D. acrylic fluidized bed with flotsam-rich binary mixtures of various sizes or densities. Experimental parameters examined included operation time, superficial gas velocity, mass fraction of jetsam, distributor open area ratio and hole size. Better mixing is obtained with a perforated plate of either low open area ratio or less hole number. As open area ratio is the same, a perforated plate with a larger hole size promotes particle mixing at an intermediate gas velocity. Particle mixing being affected not only by the bubble size but also the available jet was confirmed by the experimental results.
• 中文關鍵字： 分散板; 流體化床; 混合指標; 分離模式; 二元混合物
• 英文關鍵字： Distributor; Fluidized Bed; Mixing Index; Segregation Pattern; Binary Mixture