Ni/Al 2 O 3 /Foam Electric Heating Catalyst: Mitigating Carbon Emissions and Enhancing Reactor Temperature Uniformity

Yanlun Ren, Li Zhang () and Hong Xu ()
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Yanlun Ren: School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Li Zhang: School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Hong Xu: School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China

Energies, 2024, vol. 17, issue 23, 1-21

Abstract: Substituting the traditional fuel combustion heating mode in hydrogen production reactors with electric heating demonstrates a significant potential for reducing carbon dioxide emissions. An Ni/Al 2 O 3 /Ceramic Foam Electric Heating Catalyst was created using a replication template method and a slurry method. On a reactor with dimensions of Φ25 × 800 mm, the differences in the heating rate, axial temperature variance, radial temperature variance, and energy consumption between internal and external heating were analyzed. The results show that: (1) By optimizing the structure of the electric heating wires, the temperature uniformity in the catalyst is enhanced; (2) At 650 °C, 3000 h −1 , and S/C = 3, compared to traditional granular catalysts, the internal electric heating reduces the axial temperature variance by 69.4% and the radial temperature variance by 95%; and (3) Achieving a temperature of 650 °C using electric heating only requires 23 min, resulting in a 56.82% reduction in energy consumption compared to external heating.

Keywords: steam reforming; foam; joule heating; electrification; decarbonizing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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