预热竖窑气固传热与水分蒸发数值模拟

doi:10.12068/j.issn.1005-3026.2023.05.003

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (5): 626-634.DOI: 10.12068/j.issn.1005-3026.2023.05.003

预热竖窑气固传热与水分蒸发数值模拟

段少陪¹，李宝宽¹，穆永鸿²，荣文杰¹

(1.东北大学冶金学院，辽宁沈阳110819; 2.大连华锐重工集团股份有限公司工程技术设计院，辽宁大连116000)

发布日期:2023-05-24
通讯作者: 段少陪
作者简介:段少陪(1988-)，男，辽宁沈阳人，东北大学博士研究生；李宝宽(1963-)，男，辽宁辽阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51934002).

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:-
Supported by:
-

摘要/Abstract

摘要： 通过对一种新型预热竖窑的预热脱水研究，建立了气固两相传热和水分蒸发收缩核模型.在气体速度分别为10，15和20m/s与993K的温度条件下，针对预热竖窑的气体温度分布，以铬铁球团为主的固体混合物料温度分布和水分蒸发情况进行模拟分析.结果表明，该预热竖窑在20m/s与993K的条件下，固体物料温度达到850K以上并实现球团干燥，可以满足物料预热的温度和含水量要求.通过合理的预热工序，防止了冶炼过程中因含水率过高导致球团出现爆裂影响生产安全的问题，也满足了企业对冶炼过程中产生的高温尾气的余热利用的目标.

关键词: 预热竖窑；收缩核模型；数值模拟；球团干燥；余热利用

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

中图分类号:

TP000

段少陪，李宝宽，穆永鸿，荣文杰. 预热竖窑气固传热与水分蒸发数值模拟[J]. 东北大学学报（自然科学版）, 2023, 44(5): 626-634.

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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预热竖窑气固传热与水分蒸发数值模拟

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

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