school natural gas vacuum boiler dealer

what do you know about vacuum hot water school vacuum boiler dealers?

1. What is a vacuum hot water boiler? Answer: so-called vacuum hot water boiler, also called vacuum phase change hot water boiler. When the boiler is working normally, the inner medium pressure of the boiler is lower than the atmospheric pressure, and the cold water is heated by phase change heat. Vacuum sealing inside the body of vacuum hot water boiler, negative pressure combustion of heat medium water, steam exchange between steam and heat exchanger, high heat efficiency, one-time treatment and perfusion of heat medium water in factory, no need to replenish water in operation. The unique design of vacuum hot water boiler has formed the characteristics of safety, stability and so on.

2. The composition and structure principle of vacuum Hot Water Boiler? Answer: the furnace body of a vacuum hot water boiler is divided into two parts: the upper part is a vacuum chamber (negative pressure steam chamber), and a tubular steam-water heat exchanger is installed in the space to heat the circulating water flowing through the heat exchanger. Operation principle: during the operation of vacuum hot water boiler, the heat medium water inside the furnace under negative pressure of vacuum absorbs the heat energy released from fuel combustion, boiling vaporizes into low temperature steam, and the low temperature steam rises to meet the system circulating water in stainless steel heat exchanger. Heating circulating water to the user for heating or sanitary hot water. The water vapor itself is cooled and condensed into droplets falling onto the surface of the heat medium and then heated again, thus completing the whole cycle. Heat medium water The cycle of "boiling = evaporation = condensation = heat medium water" is constantly carried out in the enclosed body, so there is no need to replenish condensate water and there is no danger of empty burning. The condensation heat transfer coefficient of steam-water condensation in vacuum hot water boiler is the highest in all heat transfer conditions.

3. What is a vacuum? Answer: vacuum state does not mean absolute pressure is zero, as long as lower than external pressure, can be called "vacuum". For example: vacuum boiler operating inside the shell is debugged as vacuum and maintained between-375pxHg--76mmHg.

4. What is vacuum? A: vacuum refers to the degree of gas rarity in vacuum, usually expressed as "high vacuum" and "low vacuum". High vacuum means good vacuum, low vacuum means poor vacuum. The value of vacuum degree indicates that the actual value of system pressure is lower than that of atmospheric pressure, that is, vacuum degree = atmospheric pressure-absolute pressure. International standard unit of vacuum: Pa (Pa).

5. Why is heat medium water in vacuum hot water boiler heated in vacuum? Answer: the boiling temperature of water is different under different pressures. Under an atmospheric pressure (0.1Mpa), the boiling temperature of water is 100 ℃, while the boiling temperature of water is 4 ℃ under 0.8Kpa pressure. The vacuum hot water boiler works within the pressure range of vacuum degree 2.67Kpa~66.6 Kpa, and the corresponding saturation temperature is 15 ℃ ~ 85 ℃. Therefore, in vacuum, heat medium water is easy to boil and vaporize.

6. The origin of vacuum hot water boiler? A: the basic principle of vacuum hot water boiler was born in 1972 at Zurich University of Technology. In 1975, Japan's TAKUMA Company developed a vacuum hot water boiler on the basis of the principle, which was patented for invention, and was gradually popularized all over the world. This technology has been developed and developed by Korean enterprises, and South Korean TAKUMA, has appeared one after another.

To continue to improve urban air quality, to ensure the safety of winter heating, heating Dalian Municipal Construction Committee Office will strictly enforce the "Clean northern winter heating plan (2017-2021 years)" (the "Plan"), and strive to achieve clean heating.

"Plan" put forward, Dalian will gradually increase clean heating rate, adhere to clean coal-fired central heating, local conditions of use of electricity, natural gas, solar energy (3.250,0.04,1.25%), biomass and other clean energy heating, heat storage are encouraged to promote electric heating type and other ways; the existing thermal power plant, waste heat of industrial enterprises depth potential, priority use of heat source heating to achieve ultra-low emissions; research to develop clean energy heating pricing policies; supporting natural gas pipeline network to speed up urban construction, in the implementation of the gas source, guarantee under the premise of residents to use gas, natural gas heating in an orderly way.

Continue to optimize heat distribution. Speed ​​up the construction of heating pipe network, out of network coverage and bulk coal fired boilers within range. In areas do not have the cogeneration district heating conditions, the existing multiple small coal-fired boilers, alternative construction of large-capacity coal-fired boilers in accordance with the principle of equal volume.

2018, the city built-up area basically integrated heating. 2019, the county level and above the basic integration of urban built-up area of ​​heating. Before the end of 2020, according to the special plan for urban heating requirements, the county level and above in urban built-up area within the range of 300,000 kilowatts and heating cogeneration power plant over a radius of 15 kilometers, coal-fired boiler and does not meet the ultra-low emissions of coal-fired power plants all closed down integration.

2018, above the level of removal of industrial parks and 10 tons of small coal-fired boilers 49 units, 265 units and 10 tons of banned coal-fired boilers since 2014, new registrations. 2019, to improve the standard phase-out of coal-fired boiler, expand the scope to promote the elimination of urban built-up area of ​​20 steam tons / hour (or 14 MW) and coal-fired boilers. 2020, except in accordance with urban heating heating boiler special plans need to retain outside built-up areas at the county level and above cities 20 steam tons / hour (or 14 MW) and coal-fired boilers to be eliminated.

Gradual development of ultra-low emission ultra-low emission coal-fired power plant renovation, started in 2018 and the North Sea thermoelectric thermoelectric Taishan ultra-low emissions renovation, completed in 2019 Heung Hoi coal-fired thermoelectric power plants and other enterprises reform, in 2020 to complete a full ultra-low emission coal-fired plant transformation .

State supervision policy vacuum school vacuum boiler dealer is what vacuum hot water boiler with high efficiency, energy saving, safe, fast installation, versatile features, what state supervision policy vacuum boiler is? In May 2002, the State General Administration of Quality Supervision, Inspection and Quarantine (SAQSIQ) issued a document clearly defines the vacuum boiler: pressure vacuum phase transition boiler circulation system is lower than the atmospheric pressure. So there will be no explosion. Manufacturers should be manufactured in accordance with standard vacuum phase transition boiler, and bear the legal responsibility to notify the user (including boiler installer) safe use, and to ensure that the boiler system in use is always in a vacuum state. Vacuum phase transition boiler installation unit installation quality to meet the requirements of the production company responsible for the installation. Vacuum phase transition boiler installation meets the above specification, is not required by the boiler quality supervision and administration technology, pressure vessel safety watchdog confirmed, it does not require registration procedures for the use and other related issues. Vacuum hot water boiler water temperature can not provide hot water for different purposes, such as central air conditioning hot water, sanitary hot water, hot water process plant, schools, hotels, offices, etc., it is very suitable for use in these places. Fang fast vacuum condensing boiler thermal efficiency of up to 104%, full Chinese control, multi-level access control system to ensure the safe operation of the boiler, without losing flexibility.

Boiler desulfurization system common faults and solutions (vi) a, filter clogging pressure before the plaster if the circulating pump and discharge pump is too low, the filter is likely to be blocked, the control room will be an alarm signal. In this case, the spare circulation pump must start to alert the circulation pump must be stopped. After stopping operation, process water will automatically clean the filter, the clean, and the circulation pump can be restarted or as a backup. Second, the barrier seal sealing blower fan failure trip operation, the standby seal air fan does not start automatically, report value of the long, come to contact maintenance or fault put into operation as soon as possible. Two seal air fan failure outage and FGD are bypassed, consider a small amount of the original flue gas inlet baffle flue gas leaking into the absorption column, cooling needs, open door water wash demister layer. Third, investment and operation of oil school vacuum boiler dealer if the boiler and electrostatic precipitator run oil investment is not in use, report the value of long, to withdraw from the unit flue gas in FGD system operation. Fourth, the ESP fault FGD in operation, such as electrostatic precipitators unilateral have two or more electric fault outage, FGD flue dust export amount is greater than 350mg / Nm3, report the value of long, to withdraw from the flue gas unit run FGD system. V. severe fouling FGD flue inlet and a flue severe fouling bypass flue has a certain influence on the normal switching baffle. When FGD system and boiler outage, check and clean up fouling. Six, SO2 removal efficiency and low processing method, the correction SO2 meter 2, 3 corrected pH meter, if possible, an additional layer 4 runs spray level, check the dose limestone slurry; increase the feed amount of limestone slurry; reaction check limestone 5 performance, the number of the circulation pump and the pump output 6 of the checking operation, the operation start waste water (if not running at this time) 7, inspection of GGH seal air fan and fan seven low leakage, high concentrations of absorber slurry processing method, inspection density swirl number of sub-measuring instrument 2, 3 boiler load reduction, reduced boiler load 4, check outlet pressure and flow, start the standby pump 5, an increase of 6 runs, to check the cast pump discharge pressure and flow outlet 7, the cyclone cleaning gypsum 8, check the concentration measuring instrument 9, the concentration of eight, the vacuum belt conveyor system troubleshooting cyclone underflow (1) Symptom 1, the slurry feed is less than 2, the vacuum seal water flow is less than 3, the offset track belt 4, pump failure 5, a vacuum line system leaks 6, 7 dust concentration is high, breakage 8 with wear, abnormal belt conveyor belt speed (2) processing method, check valve opening to enhance feed 2, check cloth Washing pump 3, the belt deviation control module 4 checks, check the vacuum pump 5, a vacuum line to see whether there are 6 different sound, the control module 7 checks cake thickness, filter cloth tensioning case 8 check, inspection, operation of belt conveyor

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