wood pellet fired water heating boiler

Applications and technical characteristics gas-fired wood pellet fired water heating boiler with a gas boiler is a very good performance of the equipment, its use of a wide range, it is often used in various fields, and very loved by the people. Gas boiler according to the different production processes are classified into two types, one can select an appropriate type according to the specific usage. The completion of the production process. This form of gas boiler is widely used in the petrochemical, textile, printing, plastics, rubber, food processing, wood processing, asphalt heating, carton production, dehydrated vegetables, baking, sand mold casting related art drying and the like. Gas boiler can be installed in different production process is divided into horizontal and vertical gas boiler gas boiler. Both the use of gas-fired boiler in accordance with the needs of production environments to choose. Gas boiler at this stage in the process of the job can be a good heat exchange equipment, to meet the business environment for technology production processes and production plants of different needs. It is possible under such conditions to achieve a good heat exchange warming dehumidifying, drying effect to water. While the gas boiler is also widely used in the relevant aspects of urban heating, heating, insulation and so on, but also provided a good variety of efficacy of steam, cooking, sterilization and aging, etc., with strong economic benefits. Then we carry out production problems for some analysis.

It is reported that Inner Mongolia has issued a "winning Blue Sky Battle three-year action plan to implement the program," out of shutting down 300,000 kilowatts coal-fired units of non-compliance. Vigorously promote the region's coal-fired units (excluding the circulating fluidized bed and "W" Flame Boiler) ultra-low emission transformation, by the end of 2018, Wuhai City and the surrounding areas all in-service thermal power coal-fired units basically completed the transformation; by the end of 2020 before, with the rest of the transformation of the conditions to complete the transformation of coal-fired power plants all. And promote the implementation of the transformation of ultra-low emissions and steel industries.

First, the implementation of dual control energy consumption. And vigorously promote the total energy consumption and intensity "dual control" to promote the reduction of coal consumption through energy saving. Earnestly implement the autonomous region, "" Thirteen five "comprehensive energy conservation program of work for carbon reduction" and "energy saving" Thirteen Five "plan", by the end of 2020, the region's total energy consumption control at around 225 million tons of standard coal, coal accounts the proportion of total energy consumption decreased from 82.9% in 2015 to 79% unit GDP energy consumption fell 14% from 2015. According to focus on the use of coal and clean use of principles, focusing on reduction of non-coal for electricity, increase the proportion of electricity from coal, coal power accounted raise the proportion of total coal consumption to around 55%.

Second, the development of clean energy and new energy. By the end of 2020, non-fossil energy consumption reached about 25 million tons. An orderly wind power and photovoltaic power generation projects, optimization of wind energy, solar energy development layout. Increase renewable energy consumptive efforts to solve the basic wind abandoned, abandoned light problem. By the end of 2020, the region consumptive wind power capacity has reached 45 million kilowatts, 15 million kilowatts of photovoltaic power generation reached.

The level of development of the industry and domestic and international comparative analysis gap - fuel gas-fired wood pellet fired water heating 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.

Ovens: The purpose is to oven just completed construction within the furnace refractory lining, wall, chimney, brick chimney where the smoke channels are baked. Refractory lining, flue, chimney large water wet, must be dried by baking it gradually, fireclay mortar joint strength is increased, when the oven is generally employed waste wood, dry branches, bark baking as a fuel but nails should be removed. Baking should adopt slow roasted slow fire, gradually furnace, flue, chimney evaporation drying. Avoid the drying fire emergency water volume surge abruptly evaporated, water vapor and flue gas emissions cause untimely furnace wall, high flue deformed by the internal pressure, fracture or even collapse. Therefore, it must be baked cook work. For each year into the winter heating wood pellet fired water heating boiler module operation should be carried out before starting work oven into operation. To ward off moisture inside the furnace and the chimney flue.

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