1400kw Gas Vacuum Steam Boiler

1400kw Gas Vacuum Steam Boiler

Related problems of boiler corrosion deactivated 1, deactivate the boiler corrosion damage to the concept of corrosion occurring at the boiler cold standby, hot standby, or during servicing referred to deactivate corrosion. Disable boiler corrosion, primarily because the metal surface is not completely dried during the shutdown and oxygen in the atmosphere continues to leak into the cause. Although the internal and external boiler heating surface corrosion during shutdown occur simultaneously, but internal corrosion is more serious than external corrosion, so corrosion is mainly refers to disable the internal heating surface corrosion. 2, after the cause of corrosion disable shutdown, with decreasing pressure, temperature, boiler water vapor condenses into water, there will be a vacuum inside the boiler, outside air leakage into the furnace, oxygen and moisture vapor case, it is prone to corrosion of metals. Due to the structure of the boiler, if certain measures are not adopted, disabled corrosion is inevitable. Vertical e.g. superheater is not within the water in the superheater drained. When the internal heating surface metal junction with a water-soluble salt scale, will form a high concentration salt solution when it absorbs moisture, so that increased corrosion disabled, and the formation of ulcers corrosion. In this case the inlet of the superheater is often present. Because of the separated saturated steam is always when entering the superheater with a small amount of boiler water, saturated steam into the superheater absorb heat, water is evaporated into steam oven, and the boiler water containing salt is deposited on the inlet tube wall superheater. 3, disable corrosion prevention, mitigation method (1) In order to prevent or mitigate disabled corrosion protection measures should be adopted shutdown. Many shutdown protection methods, mainly divided into two categories: wet and dry protection protection. Wet disable protection commonly used in the short time, for example within one month. Wet common method is to protect the other peroxygen filled in boiler water, or an aqueous solution of alkali, maintaining a pressure of 0.3 ~ 0.5Mpa, to prevent air from leaking into the. (2) If a longer shutdown, or cold weather, in order to prevent freezing equipment, should be protected by a dry method. The method is: After shutdown, the temperature dropped to 70 ~ 80 ℃, the furnace let go all the water, using the water in the boiler will heat the entire heating surface evaporated to dryness, and dried with compressed air furnace without blowing vapor all off-contained anhydrous calcium chloride and then placed in the drum of the container. Per cubic meter of water volume ratio 0.5 ~ 1.0L of calcium chloride was placed (e.g., with lime according to 2kg / m3 basis), then the manhole is closed, periodically checked and found to be replaced when the desiccant into powder. (3) may be filled with nitrogen or ammonia gas charge protection, their preparation and use as a desiccant. Since ammonia is lighter than air, so protection during charging and ammonia, the ammonia gas should enter the upper exhaust air from the lower portion. Nitrogen is slightly lighter than air, can enter the upper portion of nitrogen from the exhaust air from the lower portion. To prevent air from leaking into, the pressure should be maintained 0.3-0.5Mpa, the pressure reduction should replenish ammonia or nitrogen.

Huaihua City gas boiler vertical type vacuum pick our vacuum boiler selection process, you will encounter many questions. Here, the authors elaborate on with the public. Vacuum boiler cost is the cost of the host vacuum boiler, burner costs and accessories (water supply pump, control panel, valves) the cost thereof. The root causes affecting the boiler cost vacuum, bear with: Gap brand, manufacturer, production capacity skills, inspection, planning, selection and other steel products. Inside, a very important root causes such as the following: a, gas 1400kw vacuum steam boiler manufacturers of the strength of the manufacturers of the strength is likely to affect, the quality of the product. Because, for a powerful companies, not only to capture the market weight more weight, occupy the right amount of experience. Moreover, Moreover, the level of professional design products. Planning levels will directly impact on the quality of the product is enormous. Affected, with the fluency of the following products, energy-saving, reliable nature, extent, and convenience. Second, the choice of good or bad metric steel, steel is the cornerstone of production capacity. Professional formal standard steel, sealed vacuum boiler is to ensure a smooth and effective. Many second-tier brands with the use of substandard or not up to standard steel, there will be a vacuum boiler products, poor fluency, large operating costs, while there reliable fault for the user to say, even when the purchase cost less, but Suizhudanque. Third, when the degree of production automation equipment vacuum boiler production capacity in the manufacturing, cutting, coil, fuse, very important skill. These three skills, both compared to the former workers through manipulation, automated production equipment, the advantage is very obvious. Due to automated manufacturing, it would be more accurate, less deviation. This also big brand vacuum boiler products, superior brand of small important thing because. Due to its production capacity in return, more then fit the planning level, to achieve the best use of formal standards. d, the step of detecting some domestic manufacturers, there is no vacuum boiler through rigorous product, manufactured assessment evaluation. Stress test ended, as professional products. Here is the working methods irresponsible. Professional checking step comprising at least: Stress test test test inert gas, welding gap inspection, inspection of the seals, and factory test run. Indispensable, even-handed. Only so, only to grasp the professional user to ensure delivery of products, allows users to use the time following, reduce non-compliant products have caused, directly affect the user's normal production activities. 5, a large part of the sale of second-tier brands, good or bad, there is no after-sales. Full service entrusted to the agents responsible. But a majority of the dealer, not a professional team of professionals. After the cause does not meet the standards will result in non-stop prevaricating, or simply can not be achieved with the consequences. The above is a vacuum boiler costs, direct influence of roots. Normally, good, excellent vacuum boiler product costs, plus a host vacuum boiler burner, in almost every 700KW, pick up million and about.

"Henan 2018 campaign of air pollution control plan" recently introduced, to guide and encourage medium-sized coal-fired boilers eliminated. In the province's foundation 10 steam tons / hour and the coal-fired boiler Chaigai, and gradually expand the boiler removal and clean energy transformation of coal-fired range, before the end of 2020, the basic elimination of provincial cities planning area 35 steam tons / hour and coal-fired boilers.

Financial awards complement the way:

1, the completion of the coal-fired boiler Chaigai before the end of October 2018, giving not less than 60,000 yuan / tons of steam financial awards complement;

2, the completion of the coal-fired boiler Chaigai before the end of October 2019, giving not less than 40,000 yuan / tons of steam financial awards complement;

3, the completion of the coal-fired boiler Chaigai before the end of October 2020 no longer give financial awards complement.

Further, out of the boiler removal methods include eliminated, an alternative centralized heating boiler, coal gas, coal to electricity, use geothermal, wind, solar, biomass with baghouse, clean coal to burn not including , CWS, anthracite, semi-coke, green coke, crude oil, coal-fired boiler removal must be removed chimney or flue physical cutting, it does not have the complex production conditions. Do not use has been shut down, eliminated waste coal-fired boilers to cash rewards and subsidies. In the process of new coal-fired boilers to switch to natural gas to be synchronized to achieve low nitrogen transformation.

Good hot water boiler which brand? Henan fast boiler hot water boiler Description; a new environmentally friendly combustion, i.e. fully premixed fuel and air, by precise adjustment and control to ensure complete mixing of gas and air, the combustion more fully, using a surface combustion technology to improve combustion efficiency and reduce NOx emissions. NOx emissions less than 18mg / Nm3. It has simple structure, convenient operation, the user simply to operate the boiler control cabinet automatically switch opening operation. Premix combustion ratio can be achieved adjusted range up to 20 to 100%. UItraten Technology - wings tube new ultra-tube heat exchanger powder - quill, energy efficient, highly advanced technology is condensed, to ensure the efficient use of energy and fully absorb the latent heat of evaporation flue gas produced after combustion, fully absorbed the vaporization latent heat of combustion flue gas generated. Thus, energy can be effectively utilized, energy conservation and improve efficiency. Use of high thermal conductivity aluminum-silicon alloy greatly extend the life of the compression element. Boiler boiler protection system has high pressure, ultra-low protection. When the supply voltage exceeds the normal range, automatically cut off the boiler supply and alarm. The boiler has a temperature sensor fault protection, each boot, boiler control system first detects (http://www.chemdrug.com/sell/76/) sensor condition, such as abnormal boiler is automatically cut off power and alarm. Boiler water alarm has the features: the boiler when the boiler water level is below the safety level, the boiler power is automatically cut off the alarm. Triple temperature protection system; over-temperature heat medium such as water protection system: Built boiler PT100 temperature sensor time monitoring the temperature of the water medium, the medium is stopped when the water temperature exceeds the set temperature of the combustor; Protection exchanger water temperature: by detecting the heat exchanger outlet temperature, controlling start and stop of the burner to protect the safety operation of the boiler, reducing fuel consumption; secondary overheat protection: overheat protection when the system is not working, the second over protection system operating in time and cut off the power boiler; a digital pressure switch: the original Japanese inlet digital pressure switch, change of the degree of vacuum in the boiler can be readily detected; when the pressure is too high, the combustion is stopped; explosion-proof valve automatic security alarm: the boiler when the internal pressure becomes slightly positive pressure explosion-proof safety valve alarm starts automatically cut off power boilers; emission automatic safety explosion-proof valve: when the boiler pressure is increasing, because EHV explosion-proof valve is broken, releasing the pressure in the boiler, to ensure safe operation of the boiler; flow switch protection; automatically detect traffic tail heating surface, ensure that sufficient cooling tail heating surface; frost protection system; burner flame failure Alarm; burner motor overload, fault protection. Key Technology vacuum leak condensing boiler embodiment is that long-term stability the degree of vacuum, the leak rate is small. Some data suggest that, if the boiler contains non-condensable gases such as air, even if the gas is weak, will have a very detrimental effect on the condensation heat transfer process. For example, air containing 1% by mass of the steam heat transfer coefficient can be reduced by 60%, resulting in serious consequences. Therefore, improving the sustainability of such a degree of vacuum of the boiler through a variety of ways is an important element. Henan fast boiler series vacuum condensing boiler is detected by a helium leak detectors, to ensure the long-term maintenance of the vacuum boiler! Vacuum automatic maintaining means introduced into the vacuum boiler operation, the interior portion of the vacuum boiler, but because of the following reasons, non-condensable gas in the boiler as the boiler operation is gradually increased. First: furnace leakage: weld seal, a slight leakage of steel. Second, no condensable gas (not prevent): water and heat medium furnace (steel plate) to release the non-condensable gases (H2 of), directly affects the degree of vacuum in the boiler. However, a chemical reaction while forming a protective film (ferric hydroxide) in the steel sheet surface, as a barrier to chemical reaction. Based on experience, the chemical reaction stops after the boiler operation two years. When the vacuum boiler non-condensable gases, the pressure will be increased, i.e., the degree of vacuum damage. Effect of non-condensable gases to the vacuum boiler heat transfer efficiency is very serious. When the non-condensable gas volume fraction of 0.2%, 20% thermal efficiency, the water temperature can not be increased, reducing the boiler output. Therefore, the non-condensable gas must be drawn vacuum boiler running.

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