Central Heating Gas Fired WNS Hot Water Boiler

Central Heating Gas Fired WNS Hot Water Boiler

The reason for the low nitrogen boiler 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.

Harbin Ecological Environment Agency announced plans to complete this year, Harbin more than 65 tons of steam coal-fired boiler soot ultra-low emissions and transform 140 units, ultra-low emissions of sulfur dioxide coordination to complete the transformation of 51 units, ultra-low emissions of nitrogen oxide transformation 20. Currently, the transformation plan has been, is being gradually start building renovation project.

Harbin nine districts built-up area and more than 65 tons of steam coal-fired boilers totaling 156 units, according to the national, provincial requirements, before the end of 2020 to complete the transformation of ultra-low emission. By the end of 2018, it has completed the transformation of ultra-low emissions to 16, and the remaining 140 units planned to complete the 2020 pre-season heating. This year's program priorities ultra-low emissions of soot complete transformation of 140 units, ultra-low emissions of sulfur dioxide coordination to complete the transformation of 51 units, ultra-low emissions of nitrogen oxide transformation 20; completed 2020 pre-season heating boilers remaining sulfur dioxide, nitrogen oxide pollutants over low-emission transformation. Up to now, the district had been held property unit boiler promotion meeting, 28 companies have 140 boiler by one to clear a specific time frame for completion and responsible persons, are gradually start building renovation project, planned before the end of September to complete the transformation of building construction; the end of October front, complete run debugging; before the end of December to complete the project acceptance.

It is understood, Harbin source of ambient air particulate matter analysis result display, the largest contribution to the PM10 and PM2.5 pollution sources are fired, share ratio of 31% and 36%, respectively. Ultra-low emissions of coal-fired boilers is mainly transformation soot particulate matter reducing emissions to the atmosphere, thereby reducing the concentration PM2.5, effectively improve air quality.

Recently, customers found us, consulted gas boiler safety operating procedures and precautions, in response to your question, our technicians have given the answer. Safety operation rules and matters needing attention for gas-fired boilers. (1) when abnormal phenomenon is found in gas boiler body, how to do control device failure in safety accident should press emergency turn-off button to stop boiler operation; (2) when the boiler feed pump is damaged and the regulating device fails, it is necessary to press the emergency turn-off button to stop the operation of the boiler, (3) when there is a problem with the electric fuel, it is necessary to press the emergency turn-off button; 4 when there is a danger to boiler or personal safety phenomenon, emergency shutdown should be taken; 5. The start-stop of the burner is directed by the boiler controller according to the change of pressure. (this function is automatic) the operator should always observe the change of pressure and stop immediately if there is any abnormal phenomenon. 6. The boiler operator should observe the water level at any time during operation, especially to ensure that the replenishment tank is full of water. Operators should regularly discharge the boiler to ensure boiler water quality. 7. Once an abnormal phenomenon occurs during boiler operation, the operator should shut down immediately and start from the new engine after handling the fault. 8. The incendiary engine operator with three-phase power supply should determine the positive and reverse of the motor before the first start-up, otherwise it will not be able to do so. Normal ignition. (at this time the incendiary machine in ten seconds after the fan stop, control box alarm).

What if there is wear and tear in the natural gas boiler? Detailed inspection is the key, as is fuel management. According to the operation condition and time of natural gas boiler, we can plan reasonable wear inspection. When using fuel, we strictly control the granularity of coal and limestone. The size of bed material should be strictly controlled. Boiler waste should be disposed of. The waste residue of the boiler must be treated before it can be discharged. Natural gas boilers should be installed where heat is used, easy to install. The hot pipe should not be too long. It should have a good insulation. The pipe shall be tilted properly from the hot water outlet to the end. The water supply source shall be equipped with a control valve. To discharge exhaust gases, the chimney of the natural gas boiler should extend to the outside and the outlet should be 1.5 to 2M higher than that of the boiler. If we want to reduce the influence on the water wall tube, we can adjust the air pressure and air volume properly, and effectively reduce the wear of the water wall. Check time is usually standby or downtime. Items to be examined include wall wear, furnace sealing and smoke leakage. In case of wear and tear, repair and welding are required to ensure the normal operation of steam boiler. Generally speaking, before combustion of natural gas boilers, fossil fuels, fossil fuels and bed and circulating materials should be filled in the combustion chamber at wind speed and strength. And stiffness of the air convection under full integration. Furnace bottom air device, inner core area upward. The movement in the outer ring region flows downwards along the water wall of the furnace, thus prolonging the residence time of the coal particles in the furnace. Mineral particles, a large number of ash powder and smoke contain a large number of fly ash particles, these continue to lead to rapid wear of water-cooled wall tube, make wall thickness wear thin, resulting in wear.

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