火电机组脱硫系统超低排放改造节能优化  

Energy-saving optimization of ultra-low emission retrofit for desulfurization system in thermal power plants

作　　者：李兴华[1] 牛拥军[1] 雷鸣[1] 何育东[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2017年第11期119-123,共5页Thermal Power Generation

基　　金：中国华能集团公司总部科技项目(HNKJ17-H11)~~

摘　　要：火电机组超低排放改造有效降低了燃煤电厂的污染物排放总量,但部分改造后的脱硫系统在运行中暴露出设计裕量过大、改造过度、运行能耗过高等问题。对此本文提出:应合理确定脱硫系统设计边界条件,根据实际燃煤及煤源选择合适的设计煤质硫分;优化脱硫系统设计方案,选择节能设备,设计方案应兼顾不同负荷工况下脱硫系统的灵活调节与节能运行;调整运行方式、优化运行参数,并使用脱硫增效剂等。上述措施可为同类工程设计优化提供参考。Ultra-low emission transformation can effectively reduce pollutant emissions from coal-fired power plants, but some transformation for the desulfurization system exposed a series of problems such as too large design margin, excessive retrofitting and over high energy consumption. To solve these problems, this paper suggests that reasonable design boundary condition should be ascertained, and optimal sulfur content in the design coal should be selected according to the actual fuel. The design scheme should be optimized and energy conservation equipment should be selected. The design plan should take into account the flexible regulation of the desulfurization system and energy saving operation under different load conditions. The operation parameters should also be adjusted. The result can provide references for the similar engineering designs.

关 键 词：脱硫系统 超低排放 节能优化 设计方案 脱硫增效剂 

分 类 号：TM621[电气工程—电力系统及自动化]