Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7082236 | Bioresource Technology | 2013 | 8 Pages |
Abstract
Biomass direct chemical looping (BDCL) conversion with natural hematite as an oxygen carrier was conducted in a fluidized bed reactor under argon atmosphere focusing on investigation the cyclic performance of oxygen carrier. The presence of oxygen carrier can evidently promote the biomass conversion. The gas yield and carbon conversion increased from 0.75Â Nm3/kg and 62.23% of biomass pyrolysis to 1.06Â Nm3/kg and 87.63% of BDCL, respectively. The components of the gas product in BDCL were close to those in biomass pyrolysis as the cyclic number increased. The gas yield and carbon conversion decreased from 1.06Â Nm3/kg and 87.63% at 1st cycle to 0.93Â Nm3/kg and 77.18% at 20th cycle, respectively, due to the attrition and structural changes of oxygen carrier. X-ray diffraction (XRD) analysis showed that the reduction extent of oxygen carrier increased with the cycles. Scanning electron microscope (SEM) and pore structural analysis displayed that agglomeration was observed with the cycles.
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Physical Sciences and Engineering
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Authors
Zhen Huang, Fang He, Yipeng Feng, Kun Zhao, Anqing Zheng, Sheng Chang, Haibin Li,