钢包烟气捕集用吹吸式排风罩结构参数的数值模拟试验分析  

NUMERICAL SIMULATION AND ANALYSIS OF STRUCTURE PARAMETERS OF PUSH-PULL HOOD FOR CAPTURING FLUE GAS EMITTED FROM THE LADLE

作　　者：刘文龙[1] 丁毅[2] 周睿[1] 沈恒根[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]马钢(集团)控股有限公司,安徽马鞍山243000

出　　处：《环境工程》2014年第2期81-86,共6页Environmental Engineering

基　　金：国家"十二五"科技支撑计划(2012BAJ02B07)

摘　　要：针对炼钢工艺鱼雷式混铁车向钢包倒铁水工艺产生大量高温含尘烟气污染环境的问题,研究采用吹吸式排风罩技术对其进行控制。结合现场应用条件,建立了用于钢包烟气捕集的吹吸式排风罩的物理模型,利用计算流体动力学方法建立了流场的数值模拟计算模型。采用正交试验法对稳态条件下的吹风口宽度、吹风长度、吹风速度、吸风速度、吸风罩位置高度、吸风罩宽度、吸风罩高度等因素进行了试验研究。对试验结果分析得出了影响吹吸式排风罩性能诸因素的作用重要程度排序;其中,吹风口宽度、吹风速度是影响捕集率的最主要因素,吹风宽度与吹风速度的交互作用对捕集效率也有显著影响;给出了通过正交试验结果确定的优方案和考虑节能及适合实际工艺条件的优方案。There is a large number of flue gas generated in the steelmaking process of pouring molten iron from torpedo car to the ladle. The push-pull hood was used to solve this problem. Combined with field application conditions, a physical model and the numerical model of the push-pull hood were established based on computational fluid dynamics. The factors that influence the capture efficiency, including aeration mouth width, aeration mouth length, aeration velocity, suction velocity, suction hood position height, suction hood width and suction hood height, were studied in steady state condition by orthogonal test. Through analyzing the test results, the factors were ranked by capture efficiency. Aeration mouth width and aeration velocity were the most important factors. The interaction between aeration mouth width and aeration velocity also had significant effect on the capture efficiency. The paper provided two optimal combinations based on the orthogonal test, actual process conditions and energy-saving considerations.

关 键 词：钢包 烟气捕集 吹吸式排风罩 数值模拟试验 

分 类 号：X701.2[环境科学与工程—环境工程]