本研究採用特定1kw級交聯式流體化床冷模，做為化學迴路程序反應器研究，該冷模已由天然鐵礦載氧體驗證流場擁有良好之循環與穩定操作性。但有別於礦石載氧體，人工合成載氧體因物理與化學性質差異，亦須置入冷模進行驗證。實驗中，以空氣做為氣相，平均粒徑0.253 mm的合成型鐵鋁載氧體為固相，參照操作鐵礦載氧體之操作變數，測試氣流操作條件，並透過系統之壓力分布、上升管壓力差擾動、與多組試驗平均值及標準差，判定系統之穩定性與最佳操作條件，並量測系統之氣體隔絕效果與載氧體磨耗性。固體循環量，係利用固體追蹤粒子與理論公式測定，並以理論計算對應燃料流量所需之最小載氧體需求量。本研究另透過計算流體力學方法，建立一套計算反應器內部氣-固二相流流場方法，將流場可視化並與實驗結果比較，以建立計算方法，預測反應器內之流場現象。
結果顯示，實驗之合成型鐵鋁載氧體，透過操作策略，同樣具有良好之循環效果、穩定性以及氣體隔絕效果，其固體循環亦足以提供燃料所需之氧氣，唯燃料氣體因設計之固體料封同樣無法完全隔絕，造成少量損失。然而，與相同反應器填料體積與粒徑大小之鐵礦載氧體操作條件比較，得知反應器於不同材料之相對最小氣泡化流量與材料之填料重量成正比之關係，可作為未來其他載氧體填料之基礎流量操作參考。最後，因熱模系統幾何設計限制，冷模系統幾何外型亦同步進行修正，並以鐵鋁載氧體進行有效地驗證，同樣具有良好之系統操作性。
計算流體力學方面，目前已建立出一套預測系統流場是否具備循環效果之方法，但由於現有之氣固拖曳力模型與理想化之限制，計算結果雖能有效模擬流場內之固體循環效果，但系統之壓力場與固體循環量部分則過度預測，未來應利用合適之自定義拖曳力模型或將忽略之能量損失代入計算，以達更佳之預測效果。

In this study, a specific circulating fluidized bed cold flow model was adopted as the chemical looping combustion reactor, which was verified by iron ore as bed material. Due to the differences of physical and chemical properties between natural and synthetic materials, a series of tests was performed in which the synthetic Fe2O3/Al2O3 was used as oxygen carrier. The hydrodynamics and stability of system were observed by the pressure drop and standard deviation of material's system pressure investigation. The attrition and gas leakage effect were measured after the optimum operating condition was defined. The solid circulation rate was also measured and calculated by tracking particles and theory. In the other hand, a computational fluid dynamics (CFD) method was built requirements in the gas-solid flow prediction inside the reactor.
The results were shown that Fe2O3/Al2O3 oxygen carrier was valid of the stable circulating condition, gas leakage effect, and provided a sufficient solid circulation rate to completely covert the fuel in theory. However, due to the simplify design of the seal between fuel reactor and cyclone, the small amount of fuel was loss from the fuel reactor to the cyclone. Furthermore, the minimum bubbling flow rate was proportional to the packing weight, when the particle size and packing volume were the same of the materials. Finally, the cold flow model was modified due to the restriction of hot model, but also verified by the Fe2O3/Al2O3 oxygen carrier with better results.
Currently, the CFD method has been established to predict the flow field of the reactor, but the pressure distribution and solid circulation rate were over predicted caused by the present drag model or the neglect of the energy loss in the system. Thus, the user defined drag model might be imported, to get more accurate prediction.

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