University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstraße 9, 70599 Stuttgart, Germany.
University of Hohenheim, State Institute of Agricultural Engineering and Bioenergy, Garbenstraße 9, 70599 Stuttgart, Germany.
Bioresour Technol. 2018 Jan;247:7-13. doi: 10.1016/j.biortech.2017.09.069. Epub 2017 Sep 11.
In order to investigate the influence of pressures up to 9bar absolute on the productivity of trickle-bed reactors for biological methanation of hydrogen and carbon dioxide, experiments were carried out in a continuously operated experimental plant with three identical reactors. The pressure increase promises a longer residence time and improved mass transfer of H due to higher gas partial pressures. The study covers effects of different pressures on important parameters like gas hourly space velocity, methane formation rate, conversion rates and product gas quality. The methane content of 64.13±3.81vol-% at 1.5bar could be increased up to 86.51±0.49vol-% by raising the pressure to 9bar. Methane formation rates of up to 4.28±0.26mmd were achieved. Thus, pressure increase could significantly improve reactor performance.
为了研究绝对压力高达 9 巴对生物甲烷化氢和二氧化碳滴流床反应器生产力的影响，在一个具有三个相同反应器的连续操作实验装置中进行了实验。压力升高有望通过提高气体分压来延长停留时间并改善 H 的传质。该研究涵盖了不同压力对重要参数的影响，例如气体空时速率、甲烷生成速率、转化率和产品气体质量。在 1.5 巴时，甲烷含量可从 64.13±3.81vol-%提高到 86.51±0.49vol-%，通过将压力升高到 9 巴。甲烷生成速率高达 4.28±0.26mmd。因此，压力升高可以显著提高反应器的性能。
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