蒸汽冷凝水是含有热能的高品质锅炉给水,回收蒸汽冷凝水是锅炉节水、节能的最有效的措施。冷凝水中含有的热量可达蒸汽总热能的20%~30%,利用蒸汽冷凝水的温度一般有60~95℃,可以提高锅炉给水温度40~60℃。冷凝水回收一般可达到锅炉补水量的40%~80%,冷凝水的品质远远高于软化水,接近纯水。如回收加以利用,可将产生显著的经济效益和社会效益,使锅炉运行更加安全经济。冷凝水回收作为锅炉补水的优点是显尔易见的,但大多数企业容易忽视冷凝水在回收过程中会对钢质管道产生严重腐蚀,铁等腐蚀产物对水质造成严重污染。未经处理的冷凝水作为锅炉补充水时,水中所含大量铁离子会在锅炉传热面发生二次结垢及垢下腐蚀,造成更大的危害。 Steam condensate is a high-quality boiler feed water containing heat energy. Steam condensate recovery is the most effective measure to save energy and save energy in the boiler. Condensed water contains up to 20% to 30% of the total heat energy of the steam. The temperature of condensing water using steam is generally 60-95 ° C, which can increase the feed water temperature of the boiler to 40-60 ° C. Condensate recovery generally up to 40% to 80% of the boiler make up water, condensate quality is much higher than the softened water, close to pure water. Such as recycling to be used, will have significant economic and social benefits, the boiler operation more secure and economical. The advantages of condensate recovery as boiler water replenishment are obvious, but most enterprises can easily overlook the serious corrosion of condensate in the steel pipe during the recovery process. The corrosive products such as iron and iron will cause serious pollution to water quality. Untreated condensed water as a supplementary water boiler, the water contains a large number of iron ions in the boiler heat transfer surface scaling and scale corrosion, resulting in greater harm.