论文部分内容阅读
1.引言钢铁工业是工业的耗能大户,1984年联邦德国钢铁工业能耗为920PJ(10~(15)J),约占其一次能耗的8.3%。能源费用为现代钢铁联合企业总费用的30%,为了降低冶金过程中的能耗,采取最佳化生产工艺、节能和回收能源等措施在经济上十分有意义。在这方面已采取的重要措施有:烧结厂生产过程的废热利用、干熄焦和高炉余压发电透平、回收转炉烟气和提高加热炉废热回收率等(图1)。从节能角度看,钢铁厂生产过程各个阶段中大部分废热是能直接回收的,占
1. INTRODUCTION The steel industry is a major energy consumer in the industry. In 1984, the federal German steel industry consumed 920 PJ (10-15 J), accounting for about 8.3% of its primary energy consumption. Energy costs represent 30% of the total cost of a modern steel complex. To reduce energy consumption in metallurgical processes, it is economically important to adopt measures such as optimizing production processes, saving energy and recycling energy. Important measures that have been taken in this regard include waste heat utilization in the sintering plant production process, coke dry quenching and overpressure turbine power generation, recovery of flue gas from the converter and improvement of recovery rate of waste heat from the furnace (Figure 1). From the energy saving point of view, most of the waste heat in the various stages of the steel plant production process can be directly recycled, accounting for