China biomass fired water tube steam boiler manufacturer
Biomass fired china biomass fired water tube steam boiler manufacturer combustion process
The biomass fuel is fed into the furnace screw feeder, where due to the high temperature flue gas and the role of the primary air gradually preheating, drying, fire, burning, this process a large number of volatile precipitation, burn vigorously. After the resulting erosion main heating surface temperature flue gas boiler, the boiler economizer heating surface of the tail and air preheater, and then into the dust, and finally through the chimney into the atmosphere. Not gasified fuel side to the rear of the grate movement until burnout, the last remaining small amount of ash fall behind the grate slag mouth.
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.
Water tube horizontal boiler( DZL coal & biomass fired type)
This type of boiler is generally preferred in high pressure applications because the high pressure water/steam can be contained within narrow pipes which can contain the pressure with a thinner wall. The thinner wall allows better heat transfer, however can be susceptible to damage by vibration caused by flue gas flow.
Industrial water tube china biomass fired water tube steam boiler manufacturer for sale has a wide application and it is mainly applied in industrial production. Industrial water tube steam boiler for sale in ZG Boiler has two types, one is SZS series oil & gas fired steam boiler and the other is SZL series coal & biomass fired steam boiler. SZS series oil & gas fired steam boiler is a type of double drums water tube boiler with “D” type. SZL series coal & biomass fired steam boiler is also a kind of double drums water tube boiler, and it is also named traveling grate boiler or chain grate boiler, not only a wide range of coals but also a wide of biomass energy such as rice husks, straw, coconut shell, palm shell, wood waste, corn cobs and so on can be its fuels and it is flexible to fuel adaptability.