材料与冶金学报2018，Vol.17Issue(2)：114-118,5.DOI:10.14186/j.cnki.1671-6620.2018.02.006
抽风式预热过程浸入式水口升温特性研究
Temperature - rising characteristics of submerged entry nozzle in the preheating process with deflating
摘要
Abstract
Taken the preheating apparatus with deflating of waste heat in a plant in China as a prototype, a numerical model was established. By using method of finite volume, a fluid-solid coupling calculation was conducted for thenozzle preheating process. Changes of nozzle preheating temperature with preheating time and pressure difference in inlet and outlet were studied. Relationship between preheating quality and the pressure difference was analysed. The results showed that the temperature-rising curves at nozzle neck are close to linear at the first 30 minutes, while the temperature rising rate decreases gradually with the preheating process; pressure difference has a great effect on preheating quality of submerged entry nozzle. The higher the pressure difference is, the higher the temperature at key points is, the axial temperature gradient is lower and temperature distribution is more reasonable.关键词
浸入式水口/流固耦合/压差/预热Key words
submerged entry nozzle/fluid-solid coupling/pressure difference/preheating分类
矿业与冶金引用本文复制引用
王长军,于洋,李宝宽..抽风式预热过程浸入式水口升温特性研究[J].材料与冶金学报,2018,17(2):114-118,5.基金项目
国家自然科学基金资助(51574068). （51574068）
