通过氧化改造气的合成气生产,使用CO2和O2透膜
José A Fabián-Anguiano1, Lorena G Cuéllar-Herrera1, José A Romero-Serrano1
1Instituto Politécnico Nacional, Escuela Superior de Ingeniería Química e Industrias Extractivas, Departamento de Ingeniería en Metalurgia y Materiales, UPALM-Zacatenco, IPN Avenue, Mexico City 07738, Mexico.
Membranes
|November 26, 2024
概括
这项研究展示了一种陶碳酸盐膜反应器,用于高效地从气生产合成气. LiAlO2 / Ag-碳酸盐膜可以选择性地透CO2和O2,从而实现高温氧化改革.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 催化剂是一种催化剂.
背景情况:
- 陶碳酸盐膜反应器在高温下提供选择性CO2分离.
- 通过合催化反应提升二氧化碳的价值是一个活跃的研究领域.
研究的目的:
- 调查使用LiAlO2/Ag-碳酸盐膜反应器进行氧化改制.
- 为了评估膜的CO2和O2透性质和稳定性.
- 评估合成天然气生产效率并确定性能限制.
主要方法:
- 一个LiAlO2/Ag-碳酸盐膜的制造和特征.
- 高温气体透性测试以确定选择性 (CO2/N2,O2/N2). 这些测试包括:
- 在工作条件下对膜进行长期稳定性测试.
- 在膜反应器内集成一个Ni/CeO2催化剂,用于氧化改造.
- 用热力学计算来支持实验发现.
主要成果:
- 该LiAlO2/Ag-碳酸盐膜在725-850°C之间表现出极好的CO2/N2和O2/N2选择性.
- 膜在长期运行时表现出了显著的稳定性,变化最小.
- 膜反应堆有效地产生富含的合成气,特别是在800°C以上.
- 由于碳沉积导致的催化剂停用被确定为影响长期性能的一个关键问题.
结论:
- 陶碳酸盐膜反应器是通过氧化改革生产合成气的有前途技术.
- 膜稳定性和选择性适用于高温应用.
- 催化剂的开发对于克服碳沉积等挑战至关重要,以实现持续运行.
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