典型钢铁企业物能消耗与烟粉尘排放分析

以典型钢铁生产企业为研究对象,基于企业实际生产数据,采用物质流分析法(MFA),构建物质代谢模型.建立了能源、资源利用和污染物排放分析指标,定量描述了钢铁企业的资源能源消耗及烟粉尘排放情况.结果表明:企业层面,高炉-转炉长流程吨钢总资源消耗量为208.6 t,燃料能消耗量占能源消耗总量的93.9%,吨钢烟粉尘排放量为648.08 g,烧结和炼铁工序贡献最大,分别占总排放量的45%和36%.电炉短流程总资源消耗量为1.31 t,电能消耗量占能源消耗总量的96.7%,吨钢烟粉尘排放量67 g.工序层面,烧结、炼焦和炼铁三个主排放工序的排放量分别为222.50 g/t烧结矿、118.20 g/t焦、245.27 g/t铁.据此,提出企业节能减排和产业结构调整的方向性建议,以减少环境压力,实现钢铁企业的可持续发展.

Energy Consumption and Smoke and Dust Emissions Analysis of Typical Iron and Steel Production Enterprise

Taking a typical iron and steel production enterprise as the research object， based on the practical production data of enterprise， substance metabolism model was constructed by using material flow analysis method (MFA). According to energy use， resource use and pollutant emissions indexes， resources and energy consumption and smoke and dust emissions situation of the iron and steel production enterprises were quantitatively described. The results showed that for enterprises， the total resource consumption per ton of steel of the blast furnace converter’s long process is 208.6t. Fuel consumption is 93.9% of the total energy consumption. The smoke and dust emission per ton of steel is 648.08g， of which sintering and iron-making process make the biggest contribution and account for 45 percent and 36 percent， respectively. The total resource consumption of electric furnace’s short process is 1.31t， of which electrical energy consumption is 96.7% of the total energy consumption and the smoke and dust emissions per ton of steel is 67g. As for processes， the emissions of sintering， coking and iron-making process are 222.50g/t sinter， 118.20g/t coke and 245.27g/t iron. Accordingly the directional advices on energy-saving and emission reduction in enterprises and the adjustment of industrial structure are put forward to reduce the pressure on the environment and realize the sustainable development of iron and steel enterprises.