宝钢高炉热风炉平衡计算与分析.pdf

44 9 Vol. 44, No. 9 2 0 0 9 9 Iron and Steel September 2009 1 1 2 关志刚, 金永龙 , 李 军 ( 1. , 114051; 2. , 200941) : , , , 6. 54% : ,,, : ; ; ; : TF544 : : 0449-749X(2009)09-0090-04 Calculation and Analysis of Exergy Balance of Hot Blast Stove in Baosteel 1 1 2 GU N Zhi-gang , JIN Yong-long , LI Jun ( 1. School of Materials Science and Engineering, University of Science and T echnology Liaoning, nshan 114051, Liaoning, China; 2. Baosteel Branch, Baosteel Co., Ltd. , Shanghai 200941, China) Abstract: The thermal balance of No.4 BF and No. 1 BF stove in Baosteel was calculated. On the basis of the re- sults, the exergy balance was analyzed. The results show that the exergy efficiency is lower than the thermal effi- ciency. The exergy efficiency of No. 1 BF stove is 6.54% less than No. 4 BF stove. The main loss of exergy is fo- cused on the burning irreversible process,the waste gas discharging process,the heat exchanging process and the un- completed burning process. The measures of saving exergy of hot blast stove are proposed. The exergy can be saved by using reasonable air excess ratio,burning with oxygen-enriched air,reducing the temperature of waste gas,impro- ving the temperature of cold air and raising the level of heat recovery device. Key words: hot blast stove; thermal balance;exergy balance;exergy efficiency , , ,, , [ 1] 1 原始数据 ,