vertical atmospheric hot water boiler
Hot water boiler maintenance method which vertical atmospheric hot water boiler hot water boiler maintenance methods if poor maintenance during outage or maintenance, the harm is great. Thus, the boiler shutdown should first remove the drum, the angle circle header, the internal pipe and the external wall and smoke vertical boiler scale, slag and all dirt. Fouling and cleaning inside the furnace water wall tubes and convection inside the smoke tube Huigou and boiler maintenance should be performed. Around its maintenance methods commonly used the following two methods. 1, wet maintenance: taking with a sufficient concentration of the alkaline solution in contact with the metal surface of the boiler, the alkaline metal surface to form a protective film to prevent corrosion in the metal. Usually of NaOH, Na2CO3 or formulated as protective Na3PO4 solution (NaOH per ton of oven 8 to 10 kg of water was added, Na2CO3 per ton 20 kg boiler water, boiler water Na3PO4 per ton 20 kg). The specific method is: the boiler all valves, baffles, manholes, hand holes, inspection door is locked, then the good previously dissolved NaOH, Na2CO3 or Na3PO4 solution was added to the boiler, the boiler and then filled with demineralized water. Alkali concentration in the furnace is the water released alongside consistent water gas (mainly O2 and CO2), the furnace may be raised Microflame warming (warmed before, the air valve to open the boiler, without air valve, safety valve available Instead of or relief valve) boiling water into the furnace, so that a natural circulation boiler water. After completion of the air valve (relief valve or safety valve) exhaust gas, and then close the air valve (relief valve or safety valve), then turn off the fire. Boiler water once a week should test to ensure that there is excess boiler water alkalinity. If insufficient alkalinity, should be added NaOH, Na2CO3 or Na3PO4.2, dried maintenance: desiccant absorbs moisture, boiler holding surface drying, to prevent corrosion. Lime (CaO) or anhydrous calcium chloride (of CaCl2) are commonly used as a desiccant. Specifically, the following: After the inner and outer surfaces clean boiler, boiler with Weihuo drying, then open wooden box containing a desiccant into the drum, the header, and furnace flue. The amount of the desiccant is determined according to the volume of the boiler (with large lime, in the boiler 2 to 3 kilograms per cubic meter, if anhydrous calcium chloride, from 1 to 2 kilograms). Then close all valves, flapper, check door, hand holes and Manhole prevent intrusion of external moisture. During the maintenance of open manholes, hand holes and door on a regular basis. If the desiccant is invalid, it should be replaced.
How to select steam boiler steam boiler heat exchanger is generally divided into two categories, one is a direct contact heat exchanger, and the other is an indirect heat exchanger. They are used to recover flue gas heat, to achieve energy saving effect of the separation device. Conventional steam boiler through a simple transformation, such as the installation of waste heat recovery unit, can improve the energy efficiency of the boiler, which is the energy-saving advantages of steam boilers. To promote energy saving is largely the cause of the country, to create more profits for the company, cost savings. Choose a good heat exchanger is one way to achieve energy efficiency goals. Direct contact heat exchanger is a steam boiler with heat recovery and a high ability to remove pollutants in flue gas, but acidic water quality, not easy to use in hot water heating boiler. Is the so-called indirect heat exchanger means we usually refer to recover heat from the flue gas condensation. Today, more and more people choose to use the steam boiler, the proportion of the market is also increasing. Such steam boiler flue gas discharged contains a large amount of steam, by condensation and release large amounts of latent heat of vaporization. Coal-fired boiler efficiency is much higher than coal-fired boilers. This boiler has a good effect on the selection of the indirect heat exchanger.
Beiqi Panthers in the car to communicate with the company, expressed full confidence in our company, cooperation is very smooth. Since the boiler departure two years, our technical staff has been concerned about the relevant boiler operation through remote monitoring system to provide strong and stable technical support services for the Beijing auto Panthers. --customer feedback
“Large card/hour” is the expression in the metric unit, which represents the amount of heat that the vertical atmospheric hot water boiler supplies per hour.