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1前言随着国民经济建设的发展及人民生活水平的提高,热水锅炉应用量逐年增加,它在满足了人民生产和生活需要的同时,运行管理中也暴露出一些问题,其中重要一点就是热水锅炉给水除氧。由于绝大多数热水锅炉给水不除氧或除氧效果不好,致使锅炉循环水中含有大量的氧,对锅炉造成严重的氧腐蚀。统计数据表明,热水锅炉因氧腐蚀而泄漏的事故经常发生,热水锅炉水管(或烟管)的寿命一般为4~6a,严重的2~3a就出现腐蚀渗漏,使锅炉不得不大量更换承压部件,甚至不得不提前报废,
1 Introduction With the development of the national economy and the improvement of people’s living standards, the application of hot water boilers has been increasing year by year. While meeting the production and living needs of the people, some problems have also been exposed in operation and management. One of the important points is that heat Water boiler oxygen supply. Due to the vast majority of hot water boiler feed water does not deoxygenation or deoxygenation effect is not good, resulting in boiler circulating water contains a lot of oxygen, causing serious oxygen corrosion of the boiler. Statistics show that hot water boiler leakage due to oxygen corrosion accidents often occur, hot water boiler pipe (or pipe) life expectancy is generally 4 ~ 6a, 2 ~ 3a serious corrosion corrosion on the emergence, the boiler had a lot Replacement of pressure parts, and even had to scrap,