SKS炼铅鼓风炉的能量分析和火用分析  

Energy and Exergy Analysis of the Blast Furnace in SKS Lead Smelting System

作　　者：蒋爱华[1,2] 梅炽[1] 时章明[1,2] 余煌[1] 姜信杰[1] 朱小军[1,2] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]湖南节能评价技术研究中心,湖南长沙410083

出　　处：《湖南大学学报（自然科学版）》2011年第6期38-42,共5页Journal of Hunan University:Natural Sciences

基　　金：湖南省科技计划攻关重大专项基金资助项目(2008SK1002)

摘　　要：为挖掘SKS炼铅系统的鼓风炉(SKS鼓风炉)的节能潜力,在现场测试数据的基础上,采用能量分析法和火用分析法分别对SKS鼓风炉的能量收支火、用量收支分布状况进行了衡算和分析.结果表明:SKS鼓风炉的热效率和火用效率分别为47.55%和38.88%.采取减少排烟损失、利用冷却水带走的能量、采用高铅渣直接还原新工艺等措施可以提高炉子的热效率和火用效率;仅利用鼓风炉冷却水带走的能量就可以使炉子的热效率提高到71.34%,火用效率提高到43.01%.SKS鼓风炉的火用输出总量要远小于火用输入总量,内部不可逆火用损失占总输入火用的41.85%.SKS鼓风炉总火用量收入为总能量收入的1.61倍,这说明SKS鼓风炉的能量和火用量衡算已经没有太大的相关性,火用分析更能够反映出系统的物质、能量消耗的本质,而且SKS鼓风炉的火用分析要比能量分析更简单.In order to exploit the potential of energy-saving of blast furnaces in SKS lead smelting systems（hereinafter referred to as SKS blast furnace）,the income and expense distribution of energy and exergy were calculated and analyzed by adopting the energy and exergy analysis approach.The results indicated that the thermal efficiency and the exergy efficiency of the SKS blast furnace is 47.55% and 38.88%,respectively.The efficiencies can be improved by reducing the loss of discharged gas,making use of the energy of cooling water,directly reducing the high lead slag with new techniques.and so on.The thermal efficiency and the exergy efficiency of the SKS blast furnace can reach 71.34% and 43.01%,respectively,by only utilizing the energy of cooling water.The total output of the exergy leaving the SKS blast furnace is much smaller than the total input,and the internal irreversible exergy loss accounts for 41.85% of the total input of exergy.The exergy income of the SKS blast furnace is 1.61 times of the total energy income,which illustrates that the balance of the energy and the exergy have little relevance.Exergy analysis further shows the essential of the consumption of material and energy in systems.Moreover,the exergy analysis is simpler than the energy analysis.

关 键 词：能量分析 火用分析 节能 SKS炼铅 鼓风炉 

分 类 号：TF062[冶金工程—冶金物理化学]