30MVA锰硅矿热炉负压控制数值模拟  

Numerical simulation of negative pressure control in 30MVA Si-Mn submerged arc furnace

作　　者：黄贵杰[1] 李立清[1] 刘峥[1] 张纯[1] 范耀煌 袁国华 黄燕 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]五矿(湖南)铁合金有限责任公司,湖南湘乡411400

出　　处：《中南大学学报（自然科学版）》2013年第10期4319-4327,共9页Journal of Central South University:Science and Technology

基　　金：湖南省节能减排重大专项项目(2009FJ1009)

摘　　要：为了研究30MVA锰硅封闭矿热炉负压控制问题,建立矿热炉三维kε模型,利用Fluent软件模拟不同出口压力、缝隙宽度和负荷下矿热炉漏风系数。研究结果表明：炉内压降随着缝隙宽度和负荷增大而增大;当出口压力一定时,漏风系数随着负荷增大而减小;当负荷一定时,漏风系数随着出口压力减小而增大。得出不同负荷和缝隙宽度下,矿热炉出口压力的负压控制范围;当负荷为66.7%,缝隙宽度小于1.0 cm时,出口压力建议维持在15~10 Pa范围内;当负荷为100.0%,缝隙宽度小于1.0 cm时,出口压力建议维持在25~20 Pa范围内;当负荷为133.3%,缝隙宽度小于1.5 cm,出口压力建议维持在45~35 Pa范围内。In order to clarify the problem of the furnace negative pressure control, a three dimensional k-e model was set up to simulate the 30MVA silicon-manganese submerged arc furnace. The Fluent software was used to simulate the submerged arc furnace air leakage coefficient under different outlet pressures, gap widths, and loads. The results show that furnace pressure drop increases with the increase of gap width and load. When the outlet pressure is constant, the air leakage coefficient decreases as the load increases. And when the load is constant, the air leakage coefficient increases as the outlet pressure decreases. The range of negative pressure control of the submerged arc furnace outlet pressure is obtained under different loads and gap widths. When the load is 66.7%, the gap width is less than 1.0 cm, and the outlet pressure is proposed to maintain within the range of -15 Pa to -10 Pa. When the load is 100.0%, the gap width is less than 1.0 cm, and the outlet pressure is proposed to maintain within the range of-25 Pa to -20 Pa. When the load is 133.3%, the gap width is less than 1.5 cm, and the outlet pressure is proposed to maintain within the range of-45 Pa to -35 Pa.

关 键 词：矿热炉 出口压力 缝隙宽度 漏风系数 负压控制 

分 类 号：X511[环境科学与工程—环境工程] X513