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我厂一至四号炉系上海锅炉厂制造的130T/H 液态排渣中压炉,于一九六八年至一九七○年先后投入运行。锅炉燃煤用渡口地区的原煤和洗中煤混合掺烧,年平均发热量为3600大卡/公斤左右,年平均灰份为45%左右,高温段和低温段省煤器的烟气流速分别为7.45m/S 及7.46m/S.锅炉授运三四年后,省煤器管的泄漏就比较严重.泄漏点主要在弯关上,靠前后墙的—排直管(后墙更严重些)及联籍穿墙管也有泄漏.根据省煤器的泄漏情况,分析泄漏的原因,主要有下列几点:
130T / H liquid slagging medium pressure furnace manufactured by Shanghai Boiler Factory, No.1 to No.4 furnace of our factory was put into operation successively from 1968 to 1970. Coal-fired boiler with coal in the mouth area and mixed with coal washing mixed, the average annual heat of 3600 kcal / kg, the average annual ash content of about 45%, high temperature and low temperature section economizer flue gas flow rates 7.45m / s and 7.46m / s. After three or four years of boiler operation, the economizer pipe leakage is more serious. Some) and joint vent through the wall pipe also leaks.According to the leakage of economizers, the analysis of the reasons for the leak, mainly in the following points: