industry natural gas steam atmospheric pressure boiler manufacturer
Fast industry steam atmospheric pressure boiler manufacturer in gas boiler industry has been at the leading level for low nitrogen environmental aspects of deep research. Dingzhou Yili Dairy determined after reaching cooperation with our company, launched a work plan for the boiler low-nitrogen transformation. Yili Dairy Dingzhou three original boiler 15t / h gas steam boiler, NOx emissions have reached 150mg / Nm3, belonging to the boiler equipment far exceeded. After the party fast professional and technical engineers, boiler and boiler model parameters to fully understand the components, rapidly developed a specific rehabilitation programs, start from the combustion system to achieve NOx emissions of 30mg / Nm3 to meet the most stringent environmental standards of the atmosphere.
The reason the gas industry steam atmospheric pressure boiler manufacturer burner noise analysis increases in the use of gas-fired boiler, found a small fire is normal, but when it becomes a fire goes out or flashing instability. First, because of excessive wind fire damper is provided; secondly, because of the fire valve microswitch (outermost damper group) is set incorrectly (fire damper is set larger than the amount of wind). Fuel circuit closing valve or port into the oil shortage, an oil filter plugging, increased gas burner boiler noise; Alternatively, since the oil inlet temperature is low, the viscosity is too high, the oil feed pump temperature, pump failure, fan motor bearing damage, and because the fan impeller dirty equipment, resulting in noisy equipment. Gas boiler in the course of the above failures, the viscosity is too high to spray the oil (heavy oil), and improper nozzle plate from the cyclone, and the like due to worn or dirty nozzles plus reasons. May be due to too high a heating temperature of the tank, leading to the steam delivery oil pump is not smooth; or because the fuel oil boiler caused by the water content. In use the gas boiler, the above failures should be gradually reduced, the heating temperature, to adjust the distance (0 ~ 10mm), cleaning or replacement should be about 50 ℃, the heating temperature should be raised. Oil change or drainage.
Several problems into a coal-fired industry steam atmospheric pressure boiler manufacturer fuel gas boiler fired boilers changed several issues should be noted that the fuel gas boiler: fuel oil (l) high temperature corrosion of the fuel used in the boiler, containing an organic salt of a metal element as sodium, vanadium class, after combustion of the low melting point eutectic oxide crystals, generally of about 600 ℃, or even lower. These oxides sublimation at a high temperature furnace, then condensed in a lower relative temperature of the heated surface to form a high temperature corrosive fouling. Is characterized by high temperature corrosion: the metal began to appear at temperatures in excess of 580-620 deg.] C, the higher the temperature, the faster the etching. High temperature corrosion measures to prevent: l) the use of additives. Mainly magnesium, calcium oxide, hydroxide or dolomite (CaC03, MgCO3) and the like, these additives can generate a high melting point compound with the component acting in a high temperature fouling, the fouling becomes loose and shape, so as to avoid or mitigate high temperature corrosion. 2) use high temperature materials with good corrosion resistance, high temperature corrosion resistant chromium steel is better than the nickel-chromium steel. 3) coated with a protective film. Susceptible to corrosion in high temperature heating surface ceramic surface coating, a silicon carbide or silicon nitride special coatings, the heated surface may be aluminized other treatment to improve its high temperature resistance. 3) coated with a protective film. Susceptible to corrosion in high temperature heating surface and other surface-coated ceramics, silicon carbide, silicon nitride, or special coatings, the heated surface may be aluminized other treatment to improve its high temperature performance rot cloud. (2) low temperature corrosion in fuel sulfur generated during the combustion S02, since the fouling atomic oxygen present in the furnace and the convection heating surface and catalytic oxide film, SO2 is further oxidized to S03. S03 and H2S04 vapor in flue gas generated in conjunction with, the dew point of the flue gas containing the sulfuric acid vapor is greatly increased, when heated wall temperature below the dew point of sulfuric acid vapor will condense on the walls, and corrosion of the metal wall. Usually low temperature corrosion It occurs at the end of the air preheater of the boiler. Thus when burning high sulfur fuel, care must be taken to prevent low temperature corrosion. Prevent low temperature corrosion measures are: 1) low oxygen combustion. When the excess air at the outlet of the furnace lag coefficient down to 1.10 or less, for sulfur of the fuel oil used, the dew point of the flue gas will be significantly decreased, so as to avoid or mitigate low temperature corrosion. 2) use of additives. Sprayed into the furnace or flue additive in the curb generation of SO3 and to reduce the flue gas dew point temperature. Common additives solid (dolomite, limestone, magnesium oxide, and some special compound), the liquid (aqueous magnesium chloride solution, some oil soluble magnesium, calcium, zinc naphthenate compound) and a gas (ammonia gas, ammonia, three different ring) three categories. 3) raising the thermal wall temperature, so that it is higher than the dew point temperature of flue gas. Commonly used methods are: hot air recirculation inlet temperature of the air preheater increase; the installation of the heater core, air is heated by steam, a low temperature air preheater horizontal structure, the level of a horizontal pipe line is arranged an air preheater , the air flow in the pipe, the pipe between the smoke flow, erosion due to the lateral wall of the flue gas, the flue gas side heat transfer coefficient is increased to increase the wall temperature, more generally vertical wall temperature of the air preheater increase 20 ~ 25 ℃. 4) corrosion-resistant materials or corrosion resistant coating materials include glass, ceramics and the like; an anti-corrosion coating and had tried to enamel-coated surfaces like special steel anticorrosion paint. 5) timely sootblowing operation, and therefore should be a reasonable arrangement sootblowers. Fire and explosion of fuel failure (3) heating surface of the tail or incomplete combustion of atomized droplets gather in the tail of the heating surface, when it reaches ignition or explosion conditions, i.e., ignition and explosion may occur. The tail heating surface fouling aggravated by the possibility of aggregation of the oil droplets. Therefore, when coal-fired boilers into oil-fired boiler, burner should be correct and rational selection and delivery, and strictly develop from the induced draft fan. Rules and procedures for shutdown and normal operation to ensure good fuel atomization, with the wind reasonable. At each of the heating surface is arranged to be reasonable sootblowers. (4) determining the dew point temperature of flue gas is determined dew-point temperature of the flue gas has practical significance for the design and operation of flue gas dew point temperature factors influence mainly sulfur fuel ink, excess air coefficient, water vapor in the flue the amount of sulfur / cement ratio and combustion.
Steam industry steam atmospheric pressure boiler manufacturer market the market situation and future prospects: Stone boiler plant fuel gas steam boiler applications is extremely broad surface, the boiler can be simply understood as a fuel or the use of other energy hot water heating can become hot water or steam machinery and equipment. Because the boiler uses different kinds there are also significant differences. By fuel into gas, oil, electric steam furnace. Fuel Gas hot water boiler is burning oil or gas fired boilers can heat the water. Development of sub-pot boiler and furnace two aspects. Fuel gas steam boiler is extremely broad application surface, a steam boiler may be understood as a simple or heat using a fuel other sources of water can be heated in hot water or steam machinery. Because the boiler uses different kinds there are also significant differences. Steam boiler steam boiler is called, is mainly used in food fermentation, hospital disinfection, school experiment, clothing ironing, bio-chemical industry, boiler industry, unlike other industries, it is neither a sunrise industry, is not a sunset industry, but coexist with humans eternal industry. Accompanied by vigorous development of China's national economy in recent years, industrial boiler manufacturing industry has made considerable progress. Its outstanding performance is: increasingly regulated industry standards, technical standards to improve, increasing product variety, economies of scale significantly expanded. As the market demand continues to increase, the number of manufacturing enterprises increased rapidly, can provide a variety of boilers of different pressure levels and capacity to meet the current needs of the market. Generally speaking, after so many years of development, China's boiler industry has indeed made great progress, while the boiler industry and enterprises are also faced with various challenges. Boiler industry must adhere to market-oriented strategy, closely rely on scientific and technological progress, scientific and technological innovation, under the guidance of national energy and environmental policy, company structure and product structure adjustment, manufacture and sale of boilers in line with market demand in order to occupy in the fierce competition in the market place. Effects of water temperature on the gas steam boiler