摘要
在热平衡计算的基础上,对宝钢一、四高炉热风炉进行了平衡分析。结果表明,宝钢一、四高炉热风炉效率远低于热效率,且一高炉热风炉全系统效率比四高炉热风炉低6.54%。两座高炉热风炉损失主要为燃烧过程不可逆损失、烟气带出的物理损失、热交换不可逆损失和化学不完全燃烧损失。宝钢热风炉节能的主要途径是:采用合理的空气过剩系数或富氧燃烧,降低烟气温度,提高冷风入炉温度,提高烟气余热回收装置利用水平。
The thermal balance of No. 4 BF and No. 1 BF stove in Baosteel was calculated. On the basis of the resuits,the exergy balance was analyzed. The results show that the exergy efficiency is lower than the thermal efficiency. The exergy efficiency of No. 1 BF stove is 6.54% less than No. 4 BF stove. The main loss of exergy is focused 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 savec 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.
出处
《钢铁》
CAS
CSCD
北大核心
2009年第9期90-93,共4页
Iron and Steel
关键词
热风炉
热平衡
平衡
效率
hot blast stove
thermal balance
exergy balance
exergy efficiency
