Experimental Study and Numerical Simulation of Gas Dryer Structure Improvement

Tianqi Yang, Yukui Wang (), Changkai Xu, Yi Zhu and Chunhua Min
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Tianqi Yang: Department of Energy and Power Engineering, School of Aeronautical Energy and Equipment Engineering, Air Force Logistics University, Xuzhou 221005, China
Yukui Wang: Department of Energy and Power Engineering, School of Aeronautical Energy and Equipment Engineering, Air Force Logistics University, Xuzhou 221005, China
Changkai Xu: Department of Energy and Power Engineering, School of Aeronautical Energy and Equipment Engineering, Air Force Logistics University, Xuzhou 221005, China
Yi Zhu: Department of Energy and Power Engineering, School of Aeronautical Energy and Equipment Engineering, Air Force Logistics University, Xuzhou 221005, China
Chunhua Min: Department of Energy and Power Engineering, School of Energy and Environmental Engineering, Beichen Campus, Hebei University of Technology, Tianjin 300130, China

Energies, 2023, vol. 16, issue 21, 1-17

Abstract: The dryer is an important part of the paper drying process, and the uniformity of the dryer wall temperature distribution has an important influence on paper production quality and efficiency. In this paper, improving the temperature uniformity of the traditional gas dryer wall is taken as the research goal, and the distribution trend and uniformity of the traditional gas dryer wall temperature are studied and analyzed, and the structural improvement plan is put forward. On the basis of this, in order to further improve the uniformity of the wall temperature of the improved gas dryer, the optimization scheme of applying endothermic coating in the low-temperature area of the inner wall of the dryer is proposed. The numerical simulation and experimental research methods are used to compare and analyze the temperature uniformity of the wall of the improved gas dryer. The results show that the axial uniformity of the wall temperature of the modified gas dryer is significantly improved. Compared with the traditional gas dryer, the temperature difference of the cylinder wall is reduced from 40 °C to 13 °C, the maximum axial temperature difference of the cylinder wall is reduced by 57%, and the temperature uniformity is increased from 66.7% to 89.6%. Compared with the improved gas dryer, after the endothermic coating is applied to the low-temperature area of the inner wall of the dryer, the temperature difference of the cylinder wall is reduced from 13 °C to 7 °C, the maximum axial temperature difference of the cylinder wall is further reduced by 46%, and the temperature uniformity is increased from 89.6% to 94.4%.

Keywords: gas dryer; structure improvement; temperature uniformity; optimization scheme (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: 2023
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