boiler plant product handling loading arm

3, green energy situation

With respect to coal-fired boilers, the fuel gas boiler are environmentally friendly products, polluting combustion gases is greatly reduced, but each boiler manufacturers have energy efficiency is not the same, Henan Granville boiler fuel gas boiler radiation heating surface is full corrugated furnace, convection heating surface using threaded pipe, heating surface, producing enough heat boiler output, thermal efficiency can be up to 92%, higher than the state.

Why the North to use more heating steam boiler plant product handling loading arm? Why use more northern heating steam boiler? Actually, this is a very short answer, because the steam boiler is a large special equipment, in line with the northern region of central heating demand. Steam boiler to provide heat to warm the device process is simple: thin point heating device (burner) generates heat to heat transfer by radiation is absorbed by the water wall, the Wall Boiling water, a lot of steam into the drum for the occurrence of water separation (except for direct current furnace), separated into the full steam superheater, by radiation, convection method and continuous top horizontal flue furnace absorption, the flue gases heat the back pass, and the superheated steam reaches the desired operating temperature, then the heating temperature of the heating water, through the heating pipes in every household. Chengdu warm central heating because they do not belong, it is not necessary to use steam boiler as heat source.

Dezhou City, Shandong Province issued - an important part of "Dezhou 2018 2020 coal consumption reduction alternative work" (the "Program"), the Yajian coal consumption as an ecological civilization construction and environmental protection work, and resolutely fight pollution prevention tough fight. "Plan" put forward, as of 2020, total coal consumption Dezhou control in less than 18.5 million tons, clean heating rate of 70%.

According to "program" requirements, Dezhou vigorously for shutting down the environmental, energy, security and other 300,000 kilowatts of coal-fired units of non-compliance, especially running at least 20 years of pure condensing units and over 25 years of condensate pumping thermoelectric unit. At the same time shutting down out of small coal-fired boilers to reduce coal pollution. Upon completion of the city's 10 steam tons / hour and coal-fired boilers are all clear on the key areas in national, provincial and determined basically eliminated 35 tons of steam / h coal-fired boilers, 65 tons of steam / hour or more coal-fired boilers completed energy efficiency and ultra-low emissions transformation.

Dezhou will also expand the scope of central heating, promoting clean urban and heating, 2020, the Center City District (Germany City, Texas Economic Development Zone, the Canal Economic Development Zone) central heating area of ​​45 million square meters, the other 10 counties (cities, districts) central heating area of ​​41 million square meters, the implementation of central heating pilot projects in rural areas where conditions permit. For areas not covered by central heating, according to the resources in the area of ​​heating conditions, combined with infrastructure construction, promote the substitution of gas for coal to other electricity-generation clean energy alternatives such as coal and biomass. As of 2020, Dezhou city's average clean heating rate of 70%. Among them, the city basically clean heating comprehensive coverage, average clean heating in rural areas reached about 55%.

In addition, Dezhou will continue to increase the proportion of natural gas consumption, substitution of coal consumption, encourage the development of direct supply of natural gas to large users to promote key industrial enterprises, industrial parks to achieve direct supply of natural gas. By 2020, increase the proportion of natural gas consumption in energy consumption to about 7%.

What are the dangers of boiler plant product handling loading arm leakage? Boiler furnace air leakage, reduce the temperature of the furnace, combustion deterioration. Leakage also increases so that the exhaust gas temperature, increasing the amount of smoke, heat losses increase, reducing the thermal efficiency of the boiler. Leakage two cases: (1) from the boiler manhole, inspection opening, explosion-proof doors, and water wall furnace, superheaters, economizers cold air through a leak into the furnace wall. (2) the perforations due to corrosion of the air preheater, the air leakage from the pressure side into the suction side of the flue gas. The former air leakage only the induced draft fan power consumption increases, while the latter also air leakage increases power consumption of the blower, serious, but also because of lack of air volume, limiting the boiler output. The convection of air leakage in the boiler flue smoke speed increase, resulting in convection heating surface wear increased coal-fired boilers. It can be seen, only boiler leakage and harm no profit, so should be minimized. For negative pressure boiler, the air leakage is inevitable, we should do is to reduce the air leakage coefficient within the allowable range.

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