Dongying City, Shandong Province in response to low-nitrogen coal-fired natcom cb boiler coms, industrial waste heat recycling and other environmental policies, combined with local conditions, Dali urban and rural areas to promote clean heating projects, and achieved remarkable results. As of mid-October this year, Dongying City clean heating rate of more than 72%.
Recently, Dongying Municipal Urban Management Bureau to the outside world, in order to further promote the urban and rural clean heating, it has already shut down 10 coal-fired boilers environmental non-compliance of a total of 155MW.
After shutting down 10 coal-fired boilers environmental non-compliance, Dongying City high environmental standards were established in a total of four 58MW gas-fired boiler and a total of four 70MW coal-water slurry boiler through a series of energy-saving treatment, flue gas emissions much higher than the index of new environmentally friendly ultra-low emission requirements.
Meanwhile, Dongying City, the original heating effect is also unsatisfactory 4.33 million square meters of heating regions to establish a uniform heating systems, and the use of standards to ensure clean heat source; higher operating costs for the original 2.17 million square meters of heating area heat source replacement process, both to ensure good heating effect but also saves a lot of money.
According to statistics, this year the city of Dongying city plans to add a total area of clean warm 8.1138 million square meters, down to the next new clean heating in rural areas 45000.
Recently, Dongying City issued a "Dongying City 2018-- 2020 coal consumption reduction alternative work" (the "Program"), after the completion of the city's 10 steam tons / hour and small coal-fired boilers zero and start steaming for 35 out of work t / h coal-fired boilers and, as of 2020, out of 35 steam tons / hour and coal-fired boilers.
Boiler excess air ratio increases, why steam temperature rises to follow? Excess air ratio increases natcom cb boiler com (originally assumed optimum excess air ratio), the temperature drop in the furnace, the heat radiation wall absorption reduction, the furnace exit gas temperature decreased slightly. Since the magnitude of the amount of smoke increases, the speed increase of smoke, the heat transfer coefficient of heat transfer temperature difference is greater than the rate of increase is reduced, so that the increase in heat absorption of the superheater. Since the increase in the amount of exhaust gas temperature and flue gas, q2 is increased, reducing the efficiency of the boiler, in the case where the same amount of fuel. Reducing evaporation, and therefore, the steam temperature rise. Generally, the excess air coefficient of 0.1 for each increase, steam temperature rise 8 ~ 1O ℃.
It will be the use of low-quality parts, and there is no good or processes, etc. on the body of the natcom cb boiler com. Although such boiler can also be used, but it's difficult when used to enhance the quality. Moreover, the production of gas boilers, it also has different strengths. The quality of any product are also affected by the strength, and if the user selects the strength of manufacturers of boilers, from the outside and then have a better performance, not only has higher thermal efficiency, but also has good energy-saving advantages, is because it is technically in all aspects it was better deal.
The first, common tail gas natcom cb boiler com installation of a condensing boiler condenser, that is, many professionals say the fake condensation. Such boilers on the basis of original boiler can improve the thermal efficiency of about 3-6%, typically oxides emissions at 120 mg / cubic meters or more, but the size of the fire or combustion switching, the integrated energy-saving effect is not obvious; But the biggest advantage of this boiler is that it's relatively cheap.
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