期刊
FUEL PROCESSING TECHNOLOGY
卷 220, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2021.106889
关键词
Chemical looping; Methane reforming; Cordierite; Monolith oxygen carrier; Perovskite
资金
- National Key R&D Program of China [2019YFE0100100]
In this study, cordierite monolith reactors coated with Ba1-xSrxCoO3-delta/CeO2 were prepared for chemical looping steam methane reforming (CL-SMR). The introduction of honeycomb ceramics effectively inhibited methane pyrolysis and carbon deposition, ensuring the H2/CO ratio of syngas was close to the theoretical value of 2. Results showed that the novel cordierite monolith reactor coated with perovskite oxide provided a promising oxygen carrier choice for the industrial application of CL-SMR.
Perovskite oxide is a potential oxygen carrier for chemical looping steam methane reforming (CL-SMR). According to our previous study, CeO2-supported Ba1-xSrxCoO3-delta perovskite exhibited high oxygen capacity and good reactivity in CL-SMR. However, powder samples faced some difficulties in CL-SMR. In this study, a series of cordierite monolith reactors coated with Ba1-xSrxCoO3-delta/CeO2 were prepared for CL-SMR. The CL-SMR reaction performance of the monolith oxygen carriers was tested in a fixed bed, and the temperature and the flow field of the reaction process were simulated using the computational fluid dynamics model. Results showed that the introduction of honeycomb ceramics (cordierite) could effectively inhibit the methane pyrolysis and the carbon deposition in the later stage during the partial oxidation of methane and ensure that the H2/CO ratio of syngas was close to the theoretical value of 2. The gas velocity was uniform in the monolith reactors and only a maximum temperature difference of about 1.5 K appeared in the central region of monolith reactor during partial oxidation of methane. The novel cordierite monolith reactor coated with perovskite oxide provided a promising oxygen carrier choice for the industrial application of CL-SMR.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据