本研究之主要目的為以氧化鐵載氧體於移動床燃料反應器應用化學迴圈程序處理生質廢棄物之可行性分析。選用生質廢棄物為稻殼、稻殼混合木屑及稻殼混合木炭作為燃料，經由分析生質物物理與化學之特性，了解其熱穩定性、熱值、固定碳、揮發物組成與固體流動性質，做為移動床進料器設計與燃燒反應之依據。本研究利用氣動輸送器來輸送生質物，可避免在輸送過程中生質物裂解而堵塞進料口。使用CO2與H2O作為氣化氣體進行空床氣化實驗，於不同反應溫度、固體進料速率、蒸氣生質比的條件下討論對於CO及H2 組成含量的結果，藉由空床實驗找到適當操作條件。最後以移動床式化學迴圈反應器對稻殼、稻殼混合木屑及稻殼混合木炭與不同流速下的載氧體進行燃燒反應，並找出適當的燃料需氧參數，可完全將生質燃料轉換為二氧化碳與水，達到良好的處理的效果，作為未來應用於處理農業廢棄物的系統放大之參考。在12小時連續燃燒試驗過程中，本研究所製備的Fe2O3/Al2O3複合載氧體展現出良好的還原能力，無凝結團聚現象產生，且具有迴圈能力，為生物質化學迴圈燃燒程序中理想的載氧體。

Utilization of biomass as fuel in chemical looping process is a strong candidate for using this renewable resource to achieve a higher energy conversion efficiency as well as CO2 capture. The purpose of this study is to investigate the agriculture waste of rice husk, rice husk/sawdust blended and rice husk/coal blended were used as fuels combustion with Fe2O3/Al2O3 oxygen carrier in moving bed fuel reactor.
Experiments on the chemical looping combustion of biomass, understanding of the physical and the chemical properties of biomass feedstock is essential for the design of a biomass reactor and gasification. Biomass fed into the reactor by pneumatic feeder, controlled carrier gas push the biomass into the gasifier, avoiding pyrolysis of feed in the gasifier feed line. The biomass gasification experiments were used rice husk, rice husk/sawdust blended and rice husk/coal blended at different temperature, biomass fuel rate and steam to biomass ratio (S/B) to gain high quality syngas produce from the gasification system and determined the better conduction to operate at moving bed fuel reactor for biomass combustion. The combustion of biomass was successfully carried out in the moving bed fuel reactor. 100% of carbon dioxide yield was reached.
SEM analysis verified that the Fe2O3/Al2O3 oxygen carrier particles maintained the particle size and that no agglomeration was observed for total 12 hour test. The formation of FeO and FeAl2O4 indicated that further utilization of oxygen in iron-based oxygen carriers can be achieved by moving bed operation.

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