加装低压省煤器机组节能效果分析  

An analyzing example for unit energy-saving with low-pressure economizer

作　　者：韩爽[1] 王伟锋[1] 张朋飞[1] 吴生来[1] 徐远纲[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2015年第12期133-135,共3页Thermal Power Generation

摘　　要：为了分析加装低压省煤器对机组热力性能的影响,以某亚临界320 MW机组为例,对机组加装低压省煤器前、后锅炉效率、汽轮机热耗率和机组供电煤耗率等进行了热力性能试验。结果表明,机组加装低压省煤器后,锅炉效率提高了1.41%,尽管汽轮机热耗率增加了64.5kJ/(kW·h),但机组供电煤耗率降低了2.2g/(kW·h),节能效果显著。The effect of adding low-pressure economizer on the unit thermal performance was introduced,and the calculation method of the unit thermal performance index was put forward.Moreover,Taking a300 MW unit as the example,the thermal performance tests were conducted for the unit before and after the low-pressure economizer was added.The variations of boiler efficiency,steam turbine heat consumption rate,unit net coal consumption rate and other parameters were obtained.The results show that,after the low-pressure economizer was added,the boiler efficiency increased by 1.41%,the unit coal consumption rate reduced by 2.2g/（kW·h）although the turbine heat rate increased by 64.5kJ/（kW·h）.The unit equipped with low-pressure economizer achieved objective energy-saving effect.

关 键 词：低压省煤器 锅炉效率 汽轮机 热耗率 煤耗率 节能 

分 类 号：TK115[动力工程及工程热物理—热能工程]