How module newest high quliaty boiler blowdown 1) opening the valve inside the sewage; (2) open the valve slowly outward discharge of sewage to be warmed and sewage pipes; (3) on and off several times from the outer sewage valve, slowly red wash liquid in the boiler fouling, so that the liquid discharge best dirt; (4) turn off the valve inside the sewage, between these two discharge of sewage water in the valve drained; (5) turn off the valve outside the sewage, the sewage termination.
Why ash rear of the newest high quliaty boiler heating surface steam temperature will reduce? In order to clean the boiler heating surface, reducing the exhaust gas temperature to raise the thermal efficiency of the boiler, heating surface, convection heating surface is mainly ash regularly. Since thermal efficiency boilers, such as maintaining the same boiler evaporation, the amount of fuel supplied into the furnace, the flue gas temperature and smoke velocity reduction furnace outlet, the heat absorption of the superheater heat transfer coefficient due to the temperature difference and the heat of the gas side lowering reduced, resulting in superheated steam temperature drops. The fuel quantity remains unchanged, the furnace exit gas temperature and smoke constant speed, due to increased steam flow and reduce heat absorption per unit mass of steam, superheater outlet steam temperature drops. Thus, convection heating surface ash, whether it is to maintain unchanged the amount of evaporation or the amount of fuel remains unchanged, so that both steam temperature drops.
Our environmental management efforts continue to increase, located in Wuhai City of Inner Mongolia is also actively respond to national policies, by removing, shutting down non-compliance of the measures within the jurisdiction of coal-fired newest high quliaty boilers, etc., to improve air quality within the city.
Recently, a reporter to follow the staff Haibo Bay Area environmental monitoring brigade, examined the case of shutting down coal-fired boilers in rural areas. Trinidad town in Wuhai unity Village, coal-fired boiler is the main source of heat in the village residents, schools, hospitals in the town and airport, but because they do not meet environmental requirements, the boiler has been officially shut down at the end of 2018. Haibo Bay Area Environmental Protection Agency environmental monitoring battalion to us to: "Removing the boiler is 20 tons of steam coal-fired boilers, each heating season about to burn more than 3,000 tons of coal in accordance with the municipal government requirements. within the deadline 20 tons of steam boilers to be all removed, replaced with clean energy. since November 2018, this block of sea area has access to a central heating all children. "
So far in 2013, Wuhai City in strict accordance with regulatory requirements grid, earnestly implement the responsibility of inspectors on-site supervision, and has eliminated 20 tons of steam coal-fired boilers for heating and tea bath furnace 791 units, of which 2018 out of 58 units. Meanwhile, municipal and district environmental protection departments at all levels to increase on-site law enforcement and ensure that the boiler is no longer out of the resurgence. Up to now, it has no built-up area of Wuhai City and 35 tons of steam coal-fired boilers to achieve a stable discharge standards.
The chamber negative pressure is too large, leakage will increase the furnace and the flue, the flue gas amount is increased smoke quicker heating surface. Thus increasing wear and wind electrical energy consumption for heating surface. Boiler efficiency is lowered, especially when operating at low load or the newest high quliaty boiler combustion instability, probably because too much fire the boiler furnace pressure. If the furnace pressure and temperature gas and flame is too small or partial pressure within the furnace operation to take direct outside, not only affect plant health, endanger personal safety, but also may cause coking furnace, burner, steel, etc. due to overheating of the furnace walls the deformation burned, therefore, the furnace must maintain a certain negative pressure operation
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