Comparison of structure forms of built-in Heat Exchanger 1, vacuum boiler: 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 boiler and pressure hot water boilers, pressure hot water boiler contrast contrast pressure hot water boiler project commercial vacuum hot water boiler in asia pressure hot water boiler safety risk of explosion safer 100% safe system efficiency of 90%, declining 82%, declining 92%, unfailing service life of more than 8 to 10 years 8 to 10 or 20 years (semi-permanent) slightly cheaper initial investment boiler, but the boiler room, boiler accessories cheap high investment, high investment auxiliary overall annual savings approval annual registration registration annual state expressly do not need approval inspection requirements need to build additional independent boiler room; professional fireman less than 4t / h can be put in the basement; required personnel on duty can be put in the basement, roof, green belt; just keep staff and more questions about 1.2 million kcal gas boiler you online consulting engineers!
Maintenance and corrosion protection hot water boiler which specific: timely water supply oxygen in the water supply process, a total of dissolved oxygen exacerbate the corrosive effect of the hot water boiler, it must be equipped with oxygen equipment to the hot water boiler. Currently, the main oxygen is to use the sodium sulfite oxygen, reducing the oxygen content in water, the purpose of removing oxygen. For some of the larger boiler plants, can use low or high vacuum deaerator device, water is evacuated of air, reducing the gas pressure in the boiler water.
Hefei is the blue sky to win the Battle of key areas for innovation to create an international influence is of great significance. Is determined to win the battle of the blue sky, the city combined with the actual situation, formulate a three-year action plan to win the embodiment Battle of blue sky. Details are as follows.
I. Target: 2020, sulfur dioxide, total nitrogen oxide emissions were reduced over 23.1% in 2015, more than 24.2%; PM2.5 concentration decreased more than 18% in 2015, the ratio of the number of days air quality assessment requirements up to the national , severe pollution and over several days ratio decreased by more than 25% compared with 2015; the full realization of "thirteen five" binding targets.
Second, the continued implementation of the total coal consumption control. By 2020, the city's coal accounts for a further decline in the proportion of total energy consumption; the city's total coal consumption to complete the tasks assigned by the national and provincial; new coal projects to implement the reduction of coal instead.
The development of special programs, shutting down vigorously eliminate environmental protection, energy consumption, safety and other 300,000 kilowatts coal-fired units of non-compliance. For shutting down the unit's capacity, coal consumption and emissions targets, allowed to trade or replacement may be within the total national and provincial construction plan developed according to the control range, co-ordinate arrangements for the construction of ultra-low emission coal-fired capacity unit.
Third, the implementation of the "coal to gas" and "electricity instead of coal." Under the premise of the implementation of the gas source, protect people's livelihood, ceramic, glass, foundry industry to actively promote natural gas instead of coal gasification project, orderly implementation of coal-fired facilities from coal to gas. Combined with regional and industry characteristics can actively promote industrial production, building heating and cooling, transportation, agricultural production, the implementation of the residents living in five major areas "electricity instead of coal", focus on improving the proportion of final energy consumption of electricity accounted for. Of the new "coal to gas" projects, we should adhere to increase coal gas reduction to gas will change under the premise signed gas supply contracts, orderly implementation.
Fourth, to carry out comprehensive improvement of coal-fired boilers, coal-fired boilers to increase efforts to eliminate, consolidate the results of coal-fired boilers eliminated. Coal-fired boiler (with tea furnace, operating a stove, grain storage and drying equipment, coal-fired facilities) carried out an intensive investigation, one by one registration. The city basically eliminated 35 tons of steam per hour of coal-fired boilers and furnaces tea, operating the stove, grain storage and drying equipment, coal-fired facilities, no new 35 tons of steam per hour of coal-fired boilers; 35 tons of steam per hour and coal-fired boiler above (except boilers fired power plant) all meet special requirements emission limits; allowed to remain 65 tons of steam per hour coal-fired boiler and above all the complete energy transformation and ultra-low emissions within the city. County (city) district, zone one by one before the end of June 2019 to develop low-nitrogen combustion rehabilitation programs for existing gas boiler, complete combustion of low nitrogen transformation in this area of existing gas boiler before the end of 2019 more than 50%, before the end of 2020 transformation is substantially complete; after transformation principle NOx emission is not higher than 50 mg / m, and comply with appropriate safety boiler specification. Urban built-up area of ultra-low emission biomass boilers implement reform.Free Chat
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