烧结余热发电闪蒸系统热力参数的优化  

Best Value of Thermal Parameters of Sintering Flash Waste Heat Power Generation System

作　　者：童正明[1] 殷园[1] 杨秋香[1] 董万吉 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《广州化学》2015年第1期19-24,共6页Guangzhou Chemistry

摘　　要：简要介绍了闪蒸补汽式余热发电技术,采用动态优化方法优化余热锅炉主汽及闪蒸补汽的运行参数。根据建立的热力计算模型,得到主蒸汽压力随窄点温差、接近点温差、热端温差等设计变量的变化规律曲线。以马钢320 m2、400 000 t/h烧结机为例,烧结余热发电闪蒸系统主蒸汽压力应选在2.35 MPa,闪蒸压力应选在0.25 MPa为最佳,闪蒸补气式余热发电系统优化前后的年经济效益可增加36.222万元,比优化前CO2排量减少0.063 6万吨,节省标煤量270.4吨。Flash compensation-gas waste heat power generation technology was introduced. The dynamic optimization method was used to optimize main-steam and flash steam parameters. According to thermodynamic calculation model, variable curves of design parameters, such as main-steam pressure with pinch point temperature difference, approach point temperature difference, warm-end temperature difference were got. Taking 320 m2、400 000 t/h sintering cooling machine of MA STEEL for an example, the best steam system main-steam pressure should select 2.35 MPa, flash pressure 0.25 MPa. Flash compensation-gas waste heat power generation technology optimization statistics before and after years increased by 362,220 Yuan, cut CO2 emissions of 636 tons, saving standard coal 270.4 tons.

关 键 词：烧结余热 闪蒸系统 参数优化 

分 类 号：TK115[动力工程及工程热物理—热能工程]