• 作者： Hwang, S.J.; Fan, Liang-Shih
• 中文摘要： 在具循環管之氣-液-固噴流床中利用實驗方法附固-液相間之質傳現象。在一內徑 15.20cm之直管內放置一內徑10.16cm之循環管。同心之氣,液噴嘴被利用在噴流座中。由苯甲酸顆粒溶於水之速率而獲取床中固液相間之質傳係數。在床內苯甲酸之濃度在文中被用來確認使用CSTR模式計算質傳係數之準確性。同時文中探討各操作變數,包括氣、液流量、固體粒子大小,固體粒子含量,對固液相間質傳係數之影響。一經驗公式,被提出來做會有循環管之二相及三相噴流床中液,固相間質傳係數之相關式。並將液固相流體化床,氣-液-固相流體化床及含循環管之氣-液-固噴流床內之質傳係數做一比較。
• 英文摘要： Experiments were conducted to investigate the solid-liquid mass transfer behavior in a draft-tube gas-liquid-solid spouted bed. A draft tube of 10.16cm ID was coaxially situated in a column of 15.24cm ID. A concentric-tube gas-liquid injector was employed for the spouted bed. Dissolution of benzoic acid pellets into water was used to obtain the solid-liquid mass transfer coefficient in the bed. The in-bed benzoic acid concentration was examined to justify the use of a continuous-flow stirred-tank reactor (SCTR) model in the evaluation of the mass transfer coefficient in this study. Effects of operating parameters, including gas and liquid flow rates, solid particle size, and solids loading, on the solid-liquid mass transfer coefficient were analyzed. An empirical equation was proposed to correlate the solid-liquid mass transfer coefficient in the draft-tube, two-phase and three-phase spouted beds. Comparisons of the mass transfer coefficients among the liquid-solid fluidized bed, gas-liquid-solid fluidized bed, and draft-tube gas-liquid-solid spouted bed were also made.
• 中文關鍵字： 三相; 噴射床; 質傳係數; 通風管
• 英文關鍵字： Three-Phase; Spouted Bed; Mass Transfer Coefficient; Draft-Tube