Experiment and Macro-Kinetics on Biomass Syngas Methanation in a Fluidized Bed Reactor
1. School of intelligent manufacturing, Nanjing Polytechnic Institute, Nanjing 210048, China;
2. School of Energy and Power, Nanjing Institute of Technology, Nanjing 211167, China;
3. China Satellite Maritime Tracking and Control Department, Jiangyin 214431, China
Abstract：To study about methane synthesis process from biomass syngas at low temperature and pressure over nickel-based catalysts in a fluidized bed reactor, the nickel-based methanation catalysts were prepared with impregnation method and characterized. The effect of operating conditions on methanation process over the synthesized nickel-based catalyst was also investigated. The performance evaluation of methanation catalyst was conducted in a fluidized bed reactor by two performance indexes-CH4 selectivity and CO conversion. The experimental results showed that the catalyst performance was greatly influenced by the methanation temperature, pressure, space velocity and volume ratio of H2 to CO (H2/CO). Higher reaction pressure and H2/CO were in favor of the methanation, while there exists an optimal methanation temperature and a compromising space velocity corresponding to the highest CH4 selectivity and CO conversion. According to the experimental results, a macro-kinetic model of syngas methanation at low temperature and pressure over the nickel-based catalysts was built up after introducing a corrected parameter based on the reaction temperature. The experimental data are in good agreement with the simulation data, which verifies the correctness of the established macro-dynamics.
Feng Fei 1,Song Guohui 2,Zhang Dehua 3 et al. Experiment and Macro-Kinetics on Biomass Syngas Methanation in a Fluidized Bed Reactor[J]. 化学反应工程与工艺, 2018, 34(5): 460-466.
