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目前很多电厂,由于给水及凝结水的PH值太低,以致引起给水及凝结水管路腐蚀,并且使炉内聚积有很多腐蚀产物。为了防止这种情况的发生,必须提高给水与凝结水的PH值。过去,曾有些厂利用在给水及凝结水中加入NaOH的方法提高水质的PH值并已收到一定的效果,但这方法有二个比较大的缺点:1,提高炉水浓度,使锅炉蒸汽品质容易恶化;2,增加炉水含有NaOH的百分数,使锅炉容易发生苛性脆化,因此,目前世界各国都在
At present, in many power plants, due to the low pH values of water supply and condensate, the water supply and condensate pipes are corroded, and many corrosion products accumulate in the furnace. In order to prevent this from happening, the pH of the feedwater and condensate must be increased. In the past, some plants used the method of adding NaOH to feed water and condensate water to increase the PH value of water quality and have already received certain results. However, this method has two major disadvantages: 1. Increasing boiler water concentration and making boiler steam quality It is prone to deterioration; 2. The increase in the percentage of boiler water containing NaOH makes the boiler susceptible to caustic embrittlement. Therefore, all countries in the world are