Recently, Shaanxi Province issued a notice "issued four Battle 2019 program of work". Programs that: improve the mechanism of heating prices, heating prices reasonable development of clean, green electricity implement ultra-low emissions coal-fired power plants, a comprehensive clean canceled preferential tariff class of high energy-consuming industries unreasonable prices and other preferential policies. Off Area ban coal stove, substantially eliminated cogeneration heating pipe network coverage in the range of coal heated oven (furnace).
According to focus on the use of coal and clean use of principles, focusing on reduction of non-coal for electricity, increase the proportion of electricity from coal. Increase Condensing units and cogeneration units technological transformation efforts, speed up the heating pipe network construction, fully release and improve the heating capacity, eliminate coal-fired boilers and scattered inside the pipe network coverage. Actively implement alternative heat source, deadline for shutting down the Guanzhong area below 100,000 kilowatts thermoelectric ratio does not meet the national standard or alternative heat source thermal units. Optimal operation mode cogeneration units, strictly implement the "hot set electricity."
Comparison of structure forms of built-in Heat Exchanger 1, vacuum fired vacuum boiler manufacturing companies: Heat exchange through steam, preheating time is short. The boiler is equipped with stainless steel "U" tube heat exchanger, one end with flange can open cleaning, the other can not open heat exchanger cleaning can not be complete. 2, atmospheric boiler. Heat transfer through water-water, preheating time is longer than vacuum boiler. Boiler with copper straight tube heat exchanger, both ends of the flange, cleaning more thoroughly.
Vacuum hot water fired vacuum boiler manufacturing companies how much you know? "A" 1. What is a vacuum hot water boiler? A: The so-called vacuum hot water boiler, also known as phase-change vacuum hot water boiler. Refers to normal operation when the internal pressure below atmospheric pressure boiler medium, by heating the cold phase change heat boiler embodiment. (Internal vacuum-tight vacuum hot water boiler body, the heat medium water pressurized combustion, the generated steam heat exchanger for soft drinks, high thermal efficiency, the heat medium water at the factory in disposable infusion process, without replenishment operation. Vacuum hot water boiler unique design, form a safe, stable, etc.) 2. composition principle structure of the vacuum hot water boiler? A: vacuum hot water boiler furnace divided into two parts; the upper half portion of a vacuum chamber (vacuum vapor chamber), which is provided with a tubular interior space of the vapor - water heat exchanger for heating flowing through the heat exchanger Recycled water. The operating principle: vacuum hot water boiler is running, the negative pressure in the vacuum furnace body heat medium water absorbs heat energy released by burning fuel, Boiling water circulating system encounters a stainless steel heat exchanger of the low temperature steam, low temperature steam rises, heating recycled water to users for heating or hot water. Itself is cooled steam condenses into water droplets fall to the surface again after the heating medium is heated, thereby completing the entire cycle. Heating medium water constantly in the body with a closed circulation heating evaporation == == == heat medium condensed water, condensed water without added thus, no danger of burning air. Vacuum hot water boiler using soda condensation heat, all heat exchangers operating condition, soda condensation heat transfer coefficient is the highest. 3. What is a vacuum? A: The vacuum does not mean absolute pressure is zero, as long as the external pressure is lower than, for example, can be called a vacuum: a vacuum when the pot boiler shell is commissioning a vacuum state, and maintain -375pxHg - between 76mmHg.. 4. What is the degree of vacuum? A: refers to the degree of vacuum in the gas lean degree of vacuum in the book, usually with a low degree of vacuum and high vacuum to FIG. High degree of vacuum represents a good degree of vacuum means, a low vacuum degree difference represents the degree of vacuum means. Vacuum degree is lower than the actual value of the pressure of the system shows the atmospheric pressure value, i.e., the degree of vacuum = atmospheric pressure - absolute pressure. Vacuum of international standard units: Pa (Pa). Why The vacuum heating medium water heated hot water boiler in a vacuum state? A: water at different pressures, different boiling temperature which, at one atmosphere pressure (0.1Mpa), the boiling temperature of water is 100 deg.] C, and under a pressure 0.8Kpa the boiling temperature of the water was 4 ℃. Vacuum hot water boiler is operating within a pressure range of vacuum degree of 2.67Kpa ~ 66.6Kpa corresponding saturation temperature is 15 ℃ ~ 85 ℃. Thus, in a vacuum state, the heat medium is easily Boiling water. 6. origin vacuum hot water boiler? A: The basic principles of vacuum hot water boiler was born in 1972, Zurich University. In 1975 the Japanese company TAKUMA Based on this principle has developed a vacuum hot water boiler and patented invention, then gradually popularized throughout the world, this technology has been developed and the development of Korean companies have emerged TAKUMA Korea, China in the late 1980s Some manufacturers have developed vacuum hot water boiler, but due to technical problems, mainly due to gas generated immiscible declining degree of vacuum problems can not be solved electrochemical reaction occurs boiler water and vacuum seal of iron, has not been promoted . 1990s South Korea's manufacturing enterprises to enter the Chinese market relatively late in 2003 about the domestic boiler manufacturers began producing vacuum boilers.
Henan fired vacuum boiler manufacturing companies which method is well known that oxygen oxygen corrosion is a key issue and safe operation of the boiler service life of impact, and with the development of the hot water boiler corrosion problems more prominent, so welcomed by the people of Henan in order to ensure the safe operation of the boiler, oxygen is imperative to take effective measures for the excellent quality of Henan boiler, the boiler Henan oxygen and what method? First, the thermal oxygen Henan boiler heat deaerator, which is the principle of the boiler water is heated to saturation temperature for the corresponding pressure of the oxygen on the water oxygen evolution revisit excluded, so as to ensure the oxygen content of boiler water reaches Henan water quality standards, and Henan boiler thermal oxygen addition methods may not only oxygen, but also to remove carbon dioxide and other gases, users need not worry about this method of oxygen will increase the amount of dissolved salt content and other gases. Second, the vacuum deaerator Henan boiler vacuum deaerator is at less than atmospheric pressure, which also belongs to the low temperature oxygen scavenging. The quality of Henan boiler vacuum oxygen effect, the key is the ability to ensure the vacuum. Will be the same time as the heat load fluctuations, airtight coupled with the entire heating system is difficult to ensure, thus oxygen in the vacuum heating system is not particularly widespread application, the user should pay attention to the selection of such a measure oxygen. Third, the oxygen resolved resolved by strong oxygen binding deoxygenated water and oxygen gas, to achieve the purpose of oxygen Henan boiler, which boiler oxygen Henan method may be performed at room temperature, heating it need not , saves energy, while parsing Henan boiler operating costs than the previous two kinds of oxygen is much lower, but not remove other gases, it also reduces the pH value. Further reliable method of oxygen Henan integrity not only more than several boiler, there is another hydrazine, sodium sulfite and the like oxygen chemicals, resins, and greater investment and oxygen oxygen steel scraps smaller investment, short when the user takes oxygen method for Henan boiler, good to weigh the pros and cons of various methods of oxygen, combined with the economic and budgetary requirements, select the most appropriate, most oxygen methods.
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