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2-5t hot water wood pellet boiler

To further reduce emissions, improve air quality, the Shanghai Municipal Government put forward the views of accelerating the implementation of small and medium sized 2-5t hot water wood pellet boilers mentioned standard transformation of the urban area. Details are as follows.

As of 2020 before the end of September, the city mentioned standard transformation is completed with small boilers. Among them, the city center before the end of 2019 to complete the transformation mentioned standard, to Shanghai, "Boiler Air Pollutants Emission Standards" (DB31 / 3872018) requirements, to encourage compliance in advance.

In January 2018 - September 2020 period, complete boiler mentioned standard transformation and acceptance, discharge standards under the "50%, 75%" and other major conditions of the city's small and medium-load boiler unit.

City, District, together, support the implementation of fiscal policy. Giving special one-off subsidies, municipal and district levels in line with the financial support of the above-mentioned range. Specific binding transformation of the former boiler capacity and completion time, be supported in accordance with the following criteria:

The level of development of the industry and domestic and international comparative analysis gap - fuel gas-fired 2-5t hot water wood pellet boilers, biomass boilers 1 Fuel gas-fired boiler fuel gas-fired boiler horizontal development originated in Europe, such as Cochran, Lancashire; therefore Horizontal Oil and Gas Fired Boiler Technology Europe has been a leader in Europe again as the benchmark German boiler manufacturing technology, currently well-known European brands Bosch (Rolls), Viessmann, Ferroli, Hoval, Cochran, United States Fulton, House special, CB boilers. In Europe three-pass boiler mainly horizontal, or add tail economizer, exhaust minimum design around 110 deg.] C, was added a small amount of the exhaust gas temperature around the condenser 55 ℃; U.S. horizontal boiler return in two or four-pass structure. Our horizontal boiler developed rapidly, mainly in the three return main part of the condensing boiler using two horizontal return plus energy-saving and condenser, structural design has been very mature, manufacturing level has been less than foreign companies. Fuel gas-fired water tube boiler technology comes mainly from the former Soviet Union, famous brands Alstom, the United States and 芬兰诺威特 CB, water tube boiler design China has reached a high level, there are double drum "D" type, "O "type, the three drum type" A ", single drum" π "type, forced circulation" π "shaped tube frame structure design are mature, the domestic market for the introduction of 芬兰诺威特 plumbing tube furnace and convection combination smoke type furnace, overhead burner; Alstom tube furnace convection module assembly for the front plus the flag type furnace. In Europe, condensing gas boiler is widely used, but the European condensing boilers are small capacity boilers, less large condensing boiler; a monolithic multi-condensing boiler, furnace boiler applied less ordinary form of a condenser; less 1.4MW condensation boiler with a premix burner; multi-cast aluminum-silicon alloy material and a steel material; heating surface enhanced heat transfer using a special multi-heated element; and multiple heat pumps, solar heating systems and other components, thereby obtaining a higher energy efficiency. While the United States is currently on the rise in the condenser plus the original boiler flue gas condensing heat recovery work, 316L are connected through grooved tubes with removable ferrule connector and header, to facilitate maintenance and replacement. Europe oil and gas boilers have a predetermined minimum boiler thermal efficiency, the lowest thermal efficiency divided by the low calorific value of three categories, namely: a standard boiler efficiency of 82 to 88%; low boiler efficiency of 88.5 - 91.5%; condensing boiler, 97.5 to 99.5% efficiency. European EN6762000 regulations on NOx emissions from burning natural gas value points 1, 2, Level 3 is the lowest emissions, NOx emission value ≤80mg / kWh; US Government regulations California natural gas-fired boiler NOx emissions of different capacity is 10 ~ 25mg / m3 (standard state). Technology development and product manufacturing quality of fuel gas-fired boiler of "Twelfth Five-Year" period made considerable progress, compared with similar foreign products, the gap is not very big, not only greatly improve the level of automation, thermal efficiency and appearance of the product quality has improved very fast, gradually replacing the imported products, imports of fuel gas-fired boiler sales decline every year in our country, but our fuel gas-fired boiler technology still has the following problems: ① domestic production of large gas-fired boiler fuel companies, most based on imitation, product performance quite different; ② domestic only a few manufacturers have the ability to test the boiler plant; boiler for different operating conditions for the verification test less, but rather in order to meet the test requirements factory boiler; heat transfer performance were inadequate in addition to a single heat transfer element research and capacity testing. Compared with European products ③ domestic product, manufacturing details, but also save big big gap on the apparent quality. European industrial design, details of the deal in place, the overall appearance. ④ domestic condensing boiler technology, low nitrogen emissions, and improved technology requires further study; relevant technical standards and specifications needed to improve and increase the thermodynamic calculation of aspect smoke wind resistance calculation, performance test and evaluation. 2 boiler technology research of biomass boilers biomass was first taken seriously in the Nordic countries, followed by the United States carried out a lot of research and development work. Biomass boiler technology is relatively common applications, technology is more mature in foreign countries. They developed products are: ① circulating fluidized bed boiler combustion raw material; ② large-scale burning of wood waste boiler circulating fluidized bed power generation; ③ straw water-cooled vibrating grate boiler, are representatives of foreign development of biomass boilers. Biomass combustion technology and our relation to Germany, Sweden, Denmark, Japan and other countries still in its infancy, the need for pretreatment of biomass, etc., combustion mechanism, boiler design, corrosion, emission reduction and other key technologies research and a breakthrough in order to reduce dependence on coal, oil, and promote the development of related products. The gap between domestic and biomass boilers are mainly: ① foreign biomass boilers generally to large-scale, automated heating direction, more varieties of biomass feedstock used, relatively complete supporting facilities, boilers used for civil applications, using a water-cooled furnace row structure. ② domestic biomass boilers are generally used for power generation. Combustion way they use chain grate, or reciprocating grate combustion CFB combustion mode. ③ uncertain national policy development of biomass boilers, emission requirements around the biomass boilers of different pollutants, resulting in the pace of development of biomass boilers are different. ④ biomass boiler system of design, technology is not advanced enough, need to continuously develop advanced products and technology, especially boiler combustion technology, designed to optimize product performance, environmental emissions targets need to be strictly controlled and continues to increase.

What companies need to use steam 2-5t hot water wood pellet boiler steam boiler uses a very broad, both in production and life plays a very important role. The use of a wide boiler, industrial and civil division, the following companies will be used in steam boilers: steam boiler through the heat exchanger, the heat exchange steam water supply, water heating, then heating, heating, bathing, production and other uses. Food industry: aspects of food processing, medical industry and is used as filling bottles and other disinfecting, the food industry can be used as steamed meat, meals. Wine also used steam. The petrochemical industry, the oil and steam may be heated to increase the flowability. Petrochemical manufacturing process also with steam. Manufacturers, with more extensive use of the steam, such as a sheet of foam insulation, heating with steam production foamed material production. Furniture made of wood to use steam drying, in order to make furniture. Filling brick building is also used for drying steam, can also generate electricity and so on. Washing Ironing industry: dry-cleaning machine, dryer, washing machine, dryer, ironing machine, iron and other equipment for the use of packaging machinery industry: labeling machines, standard sets of supporting the use of bio-chemical industry: a fermentation tank, reactor, supporting sandwich pot, mixer, emulsifier and other devices used food machinery industry: tofu machine, steamer, pot sterilization, packaging machines, coating equipment, sealing machine and other equipment for use in other industries :( oil, automobile) steam cleaning industry, (hotels, dormitories, schools) steam or hot water supply, (bridges, railways) concrete curing, etc.

Gas-fired steam 2-5t hot water wood pellet boiler which uses? Gas-fired steam boiler plays a very important role in the production and life. Very extensive use of the boiler, mainly classified into: 1, through a heat exchanger to convert the heat into water vapor, and the water is heated, and then heating, bathing and production purposes. 2, food processing, pharmaceutical industry, for disinfecting bottle filling, the food industry can be used for meat, steamed. Wine is made with steam. Further, in the petrochemical industry, oil and steam may be heated to increase the fluidity. Steam is also used in petrochemical production process. Production enterprises, using steam is widely used, such as foam insulation panels, foam material is heated to produce steam for production. Furniture made of wood furniture must be made to steam drying. Inflatable brick buildings have steam drying, you can also generate electricity and so on.

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