The reason for the low nitrogen fired water tube boiler manufacturer in vietnam What are reasons for the low nitrogen boiler has what? Coal is a major component of China's energy, coal consumption accounts for about 76% of primary energy consumption. With the rapid economic development and the rapid increase in coal consumption, coal caused by air pollution is getting worse, especially coal-fired flue gas released nitrogen oxides (NOx) are major pollutants of air pollution one. Nitric nitrogen oxides can damage the ozone layer, changing the intensity of UV irradiated to the ground; also cause changes in the ozone layer climate change, which will affect the entire environment: air, nitrogen nitric oxide or an important source of acid rain, acid influence. In the environment it is widely known that the soil and water acidification, growth of crops; also demonstrated a number of human diseases are also generated directly related to the nitrogen oxide in the air of nitric oxide. In the fuel combustion process, NOx in the atmosphere dissolved in water will form acid rain, caused widespread damage to the environment caused by corrosion, damage and other open-air heritage buildings and industrial equipment huge economic losses. Damage to the plant resulted in the death of forests; fish and lakes death; destruction of crops and soil composition of the production loss, and even death; groundwater drinking is harmful to humans. Nitrogen oxides are also directly endanger human health. The higher the concentration of nitrogen oxides, the stronger the toxicity. Because it is easily combined with animal hemoglobin in the blood, causing blood to oxygen, causing paralysis of the central nervous system. When NOx is present ultraviolet radiation of the sun, automobile exhaust hydrocarbons, light blue form toxic compounds. Byproducts are City City primary air containing pollutants such as hydrocarbons and nitrogen oxides, it refers to the product of the solar radiation to produce specific chemical reaction and the resulting mixture mist. It makes the eyes, nose, lung and other organ damage, red eye, tears and other symptoms. Long-term chronic hazards can cause pulmonary dysfunction, bronchitis, and even the development of cancer. Severe cases can cause severe chest pain, nausea and vomiting, hand-foot discomfort, blood pressure, coma and even death. In recent years, large areas of severely affected by fog and haze, the lives of the people caused great pain. Many people mistakenly believe that only respirable particulate matter is the major cause of haze. In fact, another reason: nitrogen oxides can not be ignored.
Pressure steam fired water tube boiler manufacturer in vietnam shutdown fire you do not know the techniques and precautions steam boiler refers to water heated to a certain temperature parameters and the production of industrial steam boiler, the water in the steam drum is heated to become vapor, fire emits heat in the furnace, It is the principle of the steam boiler. Steam boiler belongs to special equipment, design, processing, manufacturing, installation and use of the boiler must be supervised by technical supervision departments, users only get to use the boiler permits to use steam boilers. Fire pressure steam boiler shutdown is interrupted by slowly burning until the load drops to zero until a planned shutdown. Specific steps are as follows: 1, to reduce boiler load, according to the length of time of shutdown, the seam thicker, the thickness is generally not more than 200 mm, suitable to accelerate the speed of the grate. 2, the distance to the thick seam slag is about 1 mm grate stop rotation of the drum is stopped, the operation of the induced draft fan, blowing off a small segment of the regulating plate stopper and dampers qs, relying on natural ventilation to maintain coal lean-burn, the sewage, boiler water level will rise to the maximum allowable level. If the fire burn coal gate, grate can be switched on again, the gas will move back some distance. 3, the recovery boiler needs to run, as long as the opening lead, a blower, to adjust the smoke, and the wind baffle plenum segment adjusting the opening degree of the shutter, the adjustment of combustion steam boiler seam thickness to be normal, start grate, to resume operation .
Henan combustion control and adjust fast fired water tube boiler manufacturer in vietnam boiler company to introduce small series with the boiler combustion control and adjustment. 1 steam boiler combustion process is the basis of all the work process of the boiler, from the safe operation of the economy, environmental protection point of view, how to properly regulate the burning furnace, saving coal consumption is the responsibility of each fireman. 2 hot water boiler combustion conditions primarily by uniformly supplying the fuel, and air distribution adjusting reasonable combustion equipment is achieved, the coordination of the three, to ensure stable combustion conditions, economy, safety. When coal and boiler load changes, will need to adjust the amount of coal feed and the amount of the wind, in order to obtain a normal combustion conditions. Indicator 3.1 normal combustion conditions 4.8.3 normal combustion means: timely fire burning strong, ash burnout. Specific requirements:. A fuel inlet from the anterior arch 0.1-0.15 m fire, gray ash ex chain at the 0.3-0.4 m burnout. B. fire bed smooth, dense and uniform flame, without flame or blown partial blackening phenomenon. C. Flame intermediate white light, two dark, the fire grate bed length representing more than 3/4 of the effective length. D. pale gray smoke or nearly colorless. In order to achieve good combustion conditions, must maintain a high furnace temperature, the temperature of the upper layer is generally burner combustion layer preferably 1100-1300 deg.] C, may be determined according to the color of the flame. Furnace temperature and flame color relationship in the following table. The outlet temperature of the furnace can also be used to determine, 29MW boiler design furnace outlet temperature of 1017 ℃, 58MW of 998 ℃. 3.3 In the case of normal combustion, the oxygen content in the flue gas is constant, the oximeter, fireman can understand the situation of excess air in the furnace, the furnace excess air is generally mechanical 1.2-1.4%, of excess air and oxygen table below. Ash 3.4 combustibles content is an important sign of good and bad conditions of the boiler combustion, which fuel, combustion equipment, and operations are closely linked, general mechanical furnace ash carbon content should be less than 10%. 3.5 water boiler operation should ensure that in the case of no condensation of the tail to minimize exhaust gas temperature, exhaust gas temperature is controlled at 110-160 ℃. Adjusting and controlling the amount of coal to a fireman who adapt to changes in load, the supply must be based on different types of coal and the various stages of the heating season, the weather trend, the thickness of the seam is determined, the general control of the thickness of 80-100mm low load, medium load control in 100-120mm, high load control in 120-160mm. 2 fireman in specifying a seam thickness, to be due to the furnace, because coal should comprehensive analysis, on balance, for the ash content, water large, large particles, high ash melting point of the coal, generally the appropriate tone thick seam, opposite seam is to tune thin. Small particles of coal or pulverized coal and a low ash melting point of the plurality coal i.e. strong bonding to a thin coal seam. Generally the 3 or the boiler when the load change is not too large, the method should not be used to adjust the thickness of the seam. Because coal seam thickness adjustment can not be effective immediately adjust the load only when a large load changes, and long-term stable operation of the boiler in the new load considering regulating coal seam thickness. 4 seam thickness can be achieved by adjusting the height of the coal and layered coal hopper shutter speed of the drum. Shutter elevation coal, coal may be added into the same hierarchical improved coal hopper drum speed may be increased into the amount of coal seam in order to obtain a proper height, the height of the shutter must coal, coal hopper drum speed stratified and chain speed adjustment of the three. Given the limited level editor, inevitable errors and inadequacies, please correct me! Henan fast Boiler Company is committed to a wide variety of gas-fired boiler, steam boiler manufacturing, product quality, reasonable prices and widespread customer industry praise, if you have any needs, please contact us!
As one of Beijing's air pollution emission standards of the most demanding urban, environmental control is very strict. Beijing primary school campus Emerald City as one of the cradles of socialist culture successor, in terms of the quality of students' learning environment is put emphasis on one hundred percent. October 2017, Beijing primary school campus Emerald City with my company, signed a two Thalia T6 series vacuum hot water fired water tube boiler manufacturer in vietnam for winter heating use.
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