多年来,大家已经认识到,保持锅炉内部传热面的清洁具有重大意义,而在高压锅炉内,炉管的清洁程度显得更为重要,其主要原因有以下两方面: 1.很高的工作温度将使金属蠕变极限允许的温升降低。 2.很高的工作温度将助长炉水中可溶性成份在内部积垢下浓缩,而引起化学腐蚀, 老电站的小型低压蒸汽锅炉,可以用机械方法进行清扫。但是,近代的电站锅炉,尺寸 It has been recognized for many years that it is of great importance to maintain the cleanliness of the heat transfer surfaces inside the boiler. In high pressure boilers, the degree of cleanliness of the tubes is even more important for two main reasons: 1. High work The temperature will reduce the temperature rise allowed by the metal creep limit. 2. High working temperatures will encourage soluble components in the boiler water to concentrate under internal fouling and cause chemical attack. Small low-pressure steam boilers in old power plants can be mechanically cleaned. However, modern power station boilers, size