This type of boiler added advanced technology premix combustion, fuel and air ratio adequately adjusted before entering the combustion chamber, combustion of the fuel more fully, and the nitrogen oxide emissions of harmful substances is also greatly reduced, suitable for areas of high environmental requirements. Meanwhile boiler with integrated design, covers an area of more traditional condensing boilers can be reduced by about 20-40%, saving boiler room investment in infrastructure costs, but also more suitable for some of the smaller boiler room to land use areas. 5, a commercial volumetric gas condensing water heater (V6)
Also, when horizontal boiler stop working in the winter, should close doors and windows of boiler room and take some heating measures, so as not to freezing equipment.
Shutdown operating steam gun for steam boiler steam boiler shutdown is divided into two kinds, the temporary shutdown (within three days), complete shutdown (shutdown or overhaul more than three days). A steam boiler temporary shutdown: 1, according to the actual situation, the appropriate weakened combustion, stopping the steam, followed close blower, Fan, grate steam sector. 2, until the furnace temperature dropped to fire when the pressure starts 400 ℃, covering the layer of wet combustion of coal seam, close the damper, coal down the shutter, open the exhaust valve exhaust. 3, the boiler water level to be adjusted to a vapor pressure drop 0.15MPa when the maximum operating level, closing the main valve until the furnace temperature dropped off when the main power 200 ℃. 4, run the table in the line of steam boilers make a record, do the work of changing of the guard. 5, steam boiler pressure during the fire need to have someone on duty to prevent coal combustion and boiler water and other accidents. Second, the complete shutdown steam boiler: 1, the steam boiler is stopped an hour earlier coal supply steam, the steam to be sequentially turned off after stopping blower, Fan, grate. The excess coal in the coal hopper picking out, open grate, coal and slag in the furnace cleaned up. 2, adjust the boiler steam boiler water level to the maximum working level if the shutdown to one week, open the exhaust valve, the pressure to be reduced to 015MPa, the main steam valve closed. 3, steam boilers quickly opened if the maintenance or long-term shutdown, the pressure drop 0.4Mpa all drain valve, drain the boiler water, dried using waste heat boiler and do respond to treatment. (Note: You must turn off the furnace temperature drops after about 200 ℃ can turn on the water). 4, turn off the main power shutdown, make relevant records on the operation table boiler.
Recently, the Ministry of Environmental Protection by the volatility of the newly revised "Boiler Air Pollutants Emission Standards" released in July this year, the implementation of this standard is known as by far the most stringent air pollution emission standards for boilers, boiler caused by the manufacturing sector.
Compared with the existing standards, new standards not only revised the traditional particulate matter and sulfur dioxide emission limits, for the first time proposed emission control standards for nitrogen oxides and mercury, Forced boiler manufacturers have to upgrade technology, from the source control boiler discharge atmospheric pollutants.
One side is desulphurization and denitrification entered the final stage, while the new emission standards of air pollutants are being introduced amendments to the boiler. Such as pollutant emissions from large wide range of small capacity monomer emission coal-fired boilers and other issues close to the ground long standing will once again be enlarged, comprehensive improvement of coal-fired boilers will undoubtedly become the next focus of urban air pollution control. Analysts believe that the implementation of the new standard direct-driven investment in environmental protection will reach 370 billion yuan to 4500 yuan, while the boiler manufacturing industry is facing exams has also led to the relevant environmental protection equipment market to break out again.
By the end of 2011, our country in the boiler 620,300 units, of which 09,700 units utility boilers, industrial boilers 610 600 units, with a total capacity of about 3,515,900 kilowatts. In 2012, industrial boilers reached 62.4 million units, about 98% of the total number of boilers.
In industrial boilers, coal-fired boiler is more than 80%, the annual consumption of 490 million tons of standard coal, the average efficiency of 65% to 70%, emissions remain high.
In 2012, coal-fired industrial boilers cumulative emissions of dust 4.1 million tons, 5.7 million tons of sulfur dioxide, nitrogen oxides 2.0 million tons respectively, accounting for 32% of total national emissions, 26% and 15%, a major cause of fog and haze one of the reasons.
For this reason, in the 2013 set off a nationwide clean energy alternative coal-fired boiler boiler, more than one place Shandong, Shanxi and other relevant measures have been introduced on clean energy alternative to coal-fired boiler work. "The introduction of the implementation of the most stringent standards, will set off a coal-fired boiler in the second round.
Four existing small and medium sized coal-fired boilers in China. One pollutant emissions from large, wide surface. Second, small-cell capacity, the average capacity of 8 tons / hour, the number of 10 tons / hour of small coal-fired boilers is 42 million units, accounting for two-thirds of the total. Third, emissions close to the ground, a great impact on quality. Fourth, boiler technology, main and auxiliary mismatch, poor health. In addition, most small boiler lack of dust removal, desulfurization and denitrification equipment, led to the current sulfur dioxide and dust emissions from boilers widespread non-compliance.
From the present point of view, domestic clean energy technology matures, the implementation of new emission standards for technology development has brought very good driving force for the future, who can stable up to standard technical requirements of the country, will have a presence in the market value Otherwise it can be eliminated.
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