省煤器管子如何防磨（How can the economizer pipe be prevented from grinding）.docVIP

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省煤器管子如何防磨（How can the economizer pipe be prevented from grinding）.doc

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省煤器管子如何防磨（How can the economizer pipe be prevented from grinding） How can the economizer pipe be prevented from grinding? .txt there are no hurt wounds, and only those who smile with blood, sometimes the simplest advice for others is the hardest to do. A select a reasonable flue gas flow rate; B reduces velocity nonuniformity and soot concentration distribution is uneven; C wear prevention device; D reduces fly ash concentration; E uses membrane economizer; F reduces ash diameter; G uses a up and down flue gas flow pattern. 1. Maintain reasonable gas flow rate; 2, reduce the concentration of fly ash in the flue gas; 3. Keep fine pulverized coal fineness during operation; 4. During operation, it is found that the wear is serious, and the lower excess air coefficient can be kept when the combustion is reasonable; 5. Installing anti grinding device; 6. Use anti abrasion paint. This paper briefly introduces the mechanism and influencing factors of wear of boiler tube, causes four tube easy to wear parts of our factory boiler is analyzed in detail, and eliminate the root and resist wear from the two aspects of development of wear abrasion proof measures. [Keywords] Discussion on abrasion prevention of boiler four pipes 1. introduction boiler Four Tubes, namely boiler water wall, superheater, reheater and economizer. It consists of boiler pot and boiler drum in this part, it is the role of the absorption of coal and oil combustion to release a lot of heat radiation, and the heat carried by flue gas, heating boiler water, the evaporation and steam turbine needs qualified heat steam quality. The main part of the boiler Four Tubes furnace, its stability in operation has a direct impact on whether the boiler can run safely. According to statistics data show that the planned outage maintenance times the unit system of the steam turbine unit (hereinafter referred to as non visitiation) in the boiler accidents accounted for about 55% of the boiler Four Tubes leakage and boiler a