Transactions of Nanjing University of Aeronautics & Astronautics
Optimization of Methanol Steam Reforming Reactor with Variable Cross-Sectional Based on Reaction Characteristics
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Abstract:
The flow field characteristics in the reforming channel and the temperature distribution characteristics of the catalytic bed under the hot air heating condition are first investigated in a double-jacketed methanol steam reforming （MSR） reactor. It is shown that the temperature of the catalytic bed decreases rapidly along the flow direction， with the minimum temperature region at 15 mm to 20 mm from the catalytic bed inlet. And the temperature increases gradually with the flow direction to approach the heating temperature. In addition， the temperature gradually increases along the radius from the center to the wall， and heat transfer resistance makes the temperature in the middle of the catalyst bed lower than the temperature around. Based on this reaction characteristic， a variable cross-sectional reforming reactor is proposed in this paper to completely utilize the heat supply energy and improve the reaction efficiency. The response surface methodology （RSM） is then used to optimize the structural parameters of the variable cross-section reactor. It is shown that the methanol conversion is significantly increased at the same boundary conditions for the outer radius R1=49.94 mm at the reforming inlet of the heating channel， the radius R2=39.99 mm at the minimum cross-section and the distance D=98.44 mm from the minimum cross-section to the catalytic bed inlet.
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Project Supported:
This work was supported by the National Natural Science Foundation of China （No.51806103），the Natural Science Foundation of Jiangsu Province （No.BK20231445） and the Fundamental Research Funds for the Central Universities （No.501XTCX2023146001）.
Clc Number:
TK123
CHINA AERO-SCIENCES
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