Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.
Bioresour Technol. 2013 Jul;140:385-91. doi: 10.1016/j.biortech.2013.04.070. Epub 2013 Apr 26.
Cu, Ni and Fe oxides supported on ceria were investigated for their performance as oxygen carriers during the chemical looping combustion of biomass-derived syngas. A complex gas mixture containing CO, H2, CO2, CH4 and other hydrocarbons was used to simulate the complex fuel gas environment derived from biomass gasification. Results show that the transfer of the stored oxygen into oxidants for the supported Cu and Ni oxides at 800°C for the combustion of syngas was effective (>85%). The unsupported Cu oxide showed high oxygen carrying capacity but particle sintering was observed at 800°C. A reaction temperature of 950°C was required for the supported Fe oxides to transfer the stored oxygen into oxidants effectively. Also, for the complex fuel gas environment, the supported Ni oxide was somewhat effective in reforming CH4 and other light hydrocarbons into CO, which may have benefits for the reduction of tar produced during biomass pyrolysis.
研究了负载在氧化铈上的铜、镍和铁氧化物作为生物质衍生合成气化学链燃烧中的载氧体的性能。使用包含 CO、H2、CO2、CH4 和其他碳氢化合物的复杂混合气体来模拟源自生物质气化的复杂燃料气体环境。结果表明，在 800°C 下，负载的 Cu 和 Ni 氧化物将储存的氧气转移到氧化剂中，用于燃烧合成气是有效的（>85%）。未负载的 Cu 氧化物具有较高的载氧能力，但在 800°C 时观察到颗粒烧结。负载的 Fe 氧化物需要在 950°C 的反应温度下才能有效地将储存的氧气转移到氧化剂中。此外，对于复杂的燃料气体环境，负载的 Ni 氧化物在将 CH4 和其他轻质碳氢化合物转化为 CO 方面有些有效，这可能有利于减少生物质热解过程中产生的焦油。
