烧结工序余热回收方案的经济性分析

烧结是钢铁生产过程主要的耗能工序,在烧结过程采用余热回收技术能够有效地回收能量,降低能耗.本文建立了烧结过程余热利用的经济性分析模型,对比分析了余热发电与余热驱动机械这两种余热利用方案的经济性.结果表明:余热发电方案中,发电机组功率较大时,余热回收系统投资回收期更短;余热驱动机械方案中,汽轮机的负荷大小对于投资回收周期...

Economic analysis of waste heat recovery scheme in sintering process

Sintering is the main energy-consuming process in the steel production process.The use of waste heat recovery technology in the sintering process can effectively recover energy and reduce energy consumption.In this study,an economic analysis model of waste heat utilization in the sintering process was established,and the economics of two waste heat utilization schemes,including waste heat power generation and waste-heat-driven machinery,were compared and analyzed.The results showed that in the case of power generation,when the power of the generator set was larger,the investment payback period of waste heat recovery system was shorter.In the case of waste-heat-driven machinery scheme,the load of the steam turbine had little effect on the investment payback period.Comparing with the waste heat power generation,the investment payback period of the scheme for waste-heat-driven machinery was shorter,indicating that the waste-heat-driven machinery scheme had good economic efficiency.This study provided a reference for the recovery and utilization of waste heat in the sintering process of steel plants.