提高凝汽器真空的方法.docVIP

提高凝汽器真空的方法 提高凝汽器真空的方法 2011年02月10日 　　提高凝汽器真空的方法 　　曾 华 华电集团贵港发电公司 广西贵港市537100 　　摘要：一种有效提高凝汽器真空的方法。在凝汽器至真空泵之间的管道上设置冷却器，冷却器只要能维持出口温度（气侧）在15C左右，凝汽器真空就有可能接近真空泵的极限真空。夏天，冷却器投入运行后，凝汽器真空度可提高1.6％,根据凝汽器真空度提高1％，煤耗降低1.97g/kwh，一台600MW机组年平均发电5000小时计算，可节约煤炭9456吨/年，按500元/吨计算，节约发电成本4728000元/年。冬天，冷却器投入运行后，凝汽器真空度可提高0.57％，节约发电成本1684350元/年，减少二氧化碳排放23545.44吨/年，社会效益及经济效益显著。 　　关键词：凝汽器 真空 气体比例 真空泵 冷却器 煤耗 经济效益 二氧化碳 节能减排 Enhances the water recovery condenser vacuum the methodZENG Hua 　　China Group Expensive Port Electricity generation Company Guangxi expensive port city 537100 Abstract:One kind enhances the water recovery condenser vacuum effectively the method.Establishes the chiller on the water recovery condenser to vacuum pump between pipeline, the chiller so long as can maintain the outlet temperature (to be mad side) about 15 C, the water recovery condenser vacuum has the possibility close vacuum pump highest attained vacuum. In the summer, after the chiller investment movement, the water recovery condenser vacuum degree may enhance 1.6%, enhances 1% according to the water recovery condenser vacuum degree, the coal consumption reduces 1.97g/kwh, a 600MW unit annual mean generates electricity 5000 hours computations, may save the coal 9456 tons/years, according to 500 Yuan/ton computations, saves the electricity generation cost 4728000 Yuan/years. In the winter, after the chiller investment movement, the water recovery condenser vacuum degree may enhance 0.57%, saves the electricity generation cost 1684350 Yuan/years, reduces the carbon dioxide to discharge for 23545.44 tons/years, the social efficiency and the economic efficiency is remarkable.Key word:The water recovery condenser vacuum gas proportion vacuum pump chiller coal consumption economic efficiency carbon dioxide energy conservation reduces the platoon 　　燃煤电厂凝汽式汽轮发电机凝汽器的真空，冬天总是比夏天好，低负荷总是比高负荷好，这是为什么？这和凝汽器内存留气体的体积有关，即夏天凝汽器内气体的体积比例要大些，冬天凝汽器内气体的体积比例要小些，这才是造成汽轮发电机凝汽器的真空冬天总是比夏天好的真正原因。低负荷总是比高负荷好也是同样的道理，即高负荷时凝汽器内气体的体积比例要大些，低负荷时凝汽器