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        What is the cleaning workflow for boiler recycling?

        2019/1/21 16:28:10 Click:

        What is the cleaning workflow for boiler recycling?

        After a long time operation of the boiler, scale and rust problems have inevitably occurred. The appearance of these problems, due to the generation of scale, makes the heat transfer performance worse, and the boiler efficiency is reduced. Therefore, it is difficult to achieve the rated evaporation; and due to the poor heat transfer, the metal is overheated. Under the pressure of the boiler, the furnace tube bulges or even explodes. The poor heat transfer causes the fuel consumption to increase and the operating cost to rise. Reduced boiler life. Therefore, after boiler fouling, the necessary methods should be taken to descale .
        method
        Boiler cleaning is divided into mechanical cleaning and chemical cleaning, mechanical cleaning is manual, high-pressure water gun cleaning! Chemical cleaning is acid cleaning, you must find a qualified manufacturer, you must have a qualified environmental protection unit.
        In order for the boiler system to operate in an optimized state, special chemical treatment must be performed on the water system of the boiler system: removal of scale, rust and anti-corrosion treatment:
        1. Chemical cleaning: Add chemical cleaning agent to disperse and remove the floating rust, scale and oil in the system, and reduce it to a clean metal surface;
        2. Daily maintenance: Add GR-943C boiler scale inhibitor to avoid metal rust and prevent precipitation of calcium and magnesium ions.
        The cleaning of the boiler is divided into two parts, one is the cleaning of boiler convection tubes, superheater tubes, air heaters, water-cooled wall tubes, scale and rust, that is, the boiler water is treated with water.
        The high-pressure water jet cleaning technology uses water as a medium, and uses a special equipment system to make the water generate multi-beam, multi-angle, and high-pressure water jets with different strengths. Thoroughly cut, crush, squeeze, and scour the internal scale, blockages or surface attachments of the cleaning object to achieve the purpose of complete cleaning. No matter what scale deposits, such as rust, scale, resins, chemical residues, paints or epoxy resins, are cleaned with high-pressure water jet cleaning equipment, they can be completely removed to show their metallic nature. No chemicals, fluxes or corrosives are needed, and it is safe and environmentally friendly to use.
        The blockage of the heating surface of the boiler air pre-heater, water wall, superheater, economizer, etc. will cause the exhaust temperature to rise, the efficiency of the boiler to decrease, and the power consumption of the induced draft fan will increase; if the blockage is severe, the fan will not be able to pull the negative pressure and the furnace oxygen Not enough, the boiler was forced out of operation. Using high-pressure water jet technology, the cleaning effect is very obvious.
        The equipment consists of a high-pressure water pump, a water inlet hose, a high-pressure gun rod, and a special nozzle.
        Cleaning process: After the tap water is pressurized to 50 ~ 100Mpa by the high-pressure pump, it is transmitted to the actuator on the working surface through the pipeline system. Its outlet speed can be as high as 380m / s, and the scale on the heated surface can be washed away.
        This cleaning technology has the characteristics of high cleaning water pressure, convenient adjustment, no corrosion to the equipment being cleaned, no pollution to the environment, and obvious effects. It is a good method that is effective and saves time and effort and money. Problems such as blockage of the boiler, serious coking and slagging on the heating surface of the furnace. Generally, it can reduce the exhaust temperature by 4-12 degrees, increase the main and reheat steam temperature by 0.5-5 degrees, reduce the power consumption of the induced draft fan, and detect hidden dangers such as creep and under-scale corrosion early. help.