Study of Methane Steam Reforming Based on 3D-Printing Technology
LI Cong1,†, YU Ran1,2,†, LIU Taikai2,3,*, DENG Chunming2, DENG Changguang2, LIU Min2
1 College of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China 2 National Engineering Laboratory of Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Science, Guangzhou 510650, China 3 Foshan Taoyuan Institute of Advanced Manufacturing, Foshan 528225, Guangdong, China
Abstract: Natural gas(the main composition of natural gas is methane) reforming is one of the most efficient and cleanest utilization of natural gas. The obtained reformed gas, mainly consisting of H2, can be supplied as fuels to solid oxide fuel cells for efficiently power generating. Reactor loaded with catalysts is necessary for methane steam reforming. The 3D-printed porous structure exhibits outstanding stability at elevated tempe-rature and excellent resistance to the highly oxidizing condition, which can obviously improve the stability of the methane reforming reactor. In this work, Ni-CeO2/γ-Al2O3 catalysts were loaded onto the 3D-printed porous structure and metallic foams via impregnation. The catalyst morphology, element distribution, phase structure and thermal stability were obtained through characterization methods such as SEM, XRD and TG. Accordingly, the effects of temperature, slurry ratio and the reactor structure on methane steam reforming were studied. Resultantly, an optimized catalyst recipe was obtained as 3.5wt% PVA, 19wt% Ni, 16wt% CeO2 and 2.5wt% γ-Al2O3. The reforming tests showed that without catalysts, the hydrogen concentration of 3D-printed Inconel625 porous reactor and Ni foam was as low as 13vol% at a temperature below 700 ℃;while above 800 ℃, the 3D-printed Inconel625 porous reactor and Fe foam presented similar reforming performance, but the 3D-printed reactor showed a better repeatability. Moreover, with catalyst loading, the NCA-I (3D-printed Inconel625 porous reactor) samples always showed a lowered reforming performance than NCA-N (Ni foam) and NCA-F (Fe foam), which is mainly due to the existence of Cr that brings Cr2O3 film to the exposed surface during the reforming process and thus hinders the contact between the reaction gas and the active surface. However, the NCA-I samples showed excellent stability that no obvious embrittlement and fracture were observed after reforming test, which shows the potential to effectively improve the stability of reforming reactors.
作者简介: 李聪,长沙理工大学能源与动力工程学院教授、硕士研究生导师。2007年中南林业科技大学机械工程专业本科毕业,2013年湖南大学材料科学与工程专业博士毕业后到长沙理工大学工作至今。目前主要从事能源材料、动力设备关键部件失效分析等方面的研究工作。发表论文60余篇,包括Scripta Materialia、Wear、Materials Science and Engineering A、Journal of Materials Research and Technology、Journal of Alloys and Compounds等。 余冉,2020年6月取得郑州工商学院学士学位,现为长沙理工大学能源与动力工程学院硕士研究生,同时在广东省科学院新材料研究所联合培养,在刘太楷高级工程师、李聪教授的指导下进行研究。目前主要研究领域为甲烷水蒸气催化重整。 †共同第一作者
引用本文:
李聪, 余冉, 刘太楷, 邓春明, 邓畅光, 刘敏. 基于3D打印技术的甲烷水蒸气重整研究[J]. 材料导报, 2024, 38(10): 23020015-9.
LI Cong, YU Ran, LIU Taikai, DENG Chunming, DENG Changguang, LIU Min. Study of Methane Steam Reforming Based on 3D-Printing Technology. Materials Reports, 2024, 38(10): 23020015-9.
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2024, Vol. 38 
