Numerical Simulation of Gas-Solid Heat Transfer and Moisture Evaporation in Preheating Shaft Kiln

doi:10.12068/j.issn.1005-3026.2023.05.003

Journal of Northeastern University(Natural Science) ›› 2023, Vol. 44 ›› Issue (5): 626-634.DOI: 10.12068/j.issn.1005-3026.2023.05.003

• Materials & Metallurgy • Previous Articles Next Articles

Numerical Simulation of Gas-Solid Heat Transfer and Moisture Evaporation in Preheating Shaft Kiln

DUAN Shao-pei¹， LI Bao-kuan¹， MU Yong-hong²， RONG Wen-jie¹

1. School of Metallurgy， Northeastern University， Shenyang 110819， China; 2. Engineering Technology Design Institute， Dalian Huarui Heavy Industry Group Co.， Ltd.， Dalian 116000， China.

Published:2023-05-24
Contact: LI Bao-kuan
About author:-
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Abstract

Abstract: A shrinking core model for gas-solid heat transfer and moisture evaporation is established by studying the preheating process of a new preheating shaft kiln. The gas temperature distribution， temperature distribution of mixed solid material based on ferrochrome pellets and moisture evaporation of the solid materials in the kiln are simulated and analyzed at the gas velocities of 10， 15 and 20m/s and temperature of 993K. The results show that with gas velocity of 20m/s and temperature of 993K， the solid material temperature reached above 850K and the pellets were dried， which can fulfill the temperature requirements and moisture content requirements of the material preheated. Through a reasonable preheating process， the problem of pellets bursting and affecting production safety due to high moisture content in the smelting process is prevented， and the enterprise’s goal of utilizing the waste heat of the high-temperature exhaust gas generated in the smelting process is also fulfilled.

Key words: preheating shaft kiln; shrinking core model; numerical simulation; pellets drying; waste heat utilization

CLC Number:

TP000

DUAN Shao-pei， LI Bao-kuan， MU Yong-hong， RONG Wen-jie. Numerical Simulation of Gas-Solid Heat Transfer and Moisture Evaporation in Preheating Shaft Kiln[J]. Journal of Northeastern University(Natural Science), 2023, 44(5): 626-634.

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Numerical Simulation of Gas-Solid Heat Transfer and Moisture Evaporation in Preheating Shaft Kiln

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