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燃烧设备的受热面在沉积灰垢之后,热阻将明显增大,使燃烧设备的热效率和经济性随之降低。例如,在受热面上沉积1毫米厚的灰垢,热效率将降低1～3%,而实际使用的燃烧设备,积垢往往达到2～3毫米,甚至更多。不难看出,由于积垢所造成的燃料浪费是相当可观的。此外,受热面上的沉积物还将吸收烟气中的二氧化硫和三氧化硫,并在吸收水分后形成硫酸,从而加剧对受热面金属的腐蚀。所以,保持受热面不积灰结垢,是节约能源和延长设备寿命的一项重要措施。消除受热面沉积物的传统方法,是采用各种形式的吹灰器,但清灰效率较低。
After the heating surface of the combustion equipment in the deposition of ash scale, the thermal resistance will be significantly increased, so that the thermal efficiency of the combustion equipment and reduce the economy. For example, the deposition of 1 mm thick fouling on heated surfaces will reduce thermal efficiency by 1 to 3%, whereas in actual combustion equipment, fouling tends to reach 2 to 3 mm or more. It is not hard to see that the fuel waste due to fouling is considerable. In addition, deposits on the heated surface will also absorb sulfur dioxide and sulfur trioxide from the flue gas and form sulfuric acid upon absorption of moisture, exacerbating the corrosion of the heated face metal. Therefore, to keep the heating surface does not fouling, is to save energy and extend the life of the equipment is an important measure. The traditional method of removing deposits from heated surfaces is to use various forms of sootblowers, but with less efficient cleaning.