150t h industrial steam boiler in textile factory
What harm boiler fouling scale of poor thermal conductivity, thermal conductivity coefficient of thermal conductivity than the boiler plate several times to hundreds of times, so after scaling the boiler will be a serious impediment to heat transfer and cause the following hazards:? 1 waste of fuel, will contribute to reduce boiler fouling seriously affected heat transfer, reduce the thermal efficiency and reduce the steam output and increase fuel consumption. 2 can lead to an accident, after the birth knot scale, the heat of the metal due to heat transfer obstruction scale is difficult to affect the safe operation of the boiler water heating surface, resulting in a sharp increase in metal wall temperature, when the temperature exceeds the allowable metal can withstand temperature, the metal strength is significantly reduced, thereby resulting in overheating of the metal deformation, bulge will result, severe fractures, and even burst pipes and other accidents. 3. clogging pipes, fouling the water if the destruction of the water cycle, it will reduce the flow area, increasing the water flow resistance, disruption of normal circulation, but also completely congested the pipe, tube rupture or cause. 4. Corrosion caused by dirt, shortening the life of the boiler after the boiler scale and corrosion under the scale can also cause harm. Some compact structure or complex structure of the boiler, once the heating surface fouling, it is extremely difficult to remove, severe had to use Wabu, pipe cutting measures such as exchange repair, not only big expense, but also the heating surface is severely damaged. All of these hazards will greatly shorten the life of the boiler.
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Take you into the fast boiler - smoke box making
Smoke box is one of the important components of the horizontal boiler, belonging to the unique structure fire tube boiler, is a "swivel flue box." High temperature flue gas flow in the body in the furnace to increase the flow length of the heating surface, without occupying too large area heating surface needs to be designed in a plurality of backhaul collapsible structure, resulting smoke box. Smoke box should have a good thermal insulation, fire resistance, use of safety features.
Summary terminology boiler 1, rated thermal power: rated conditions, heat boiler per unit time can be provided, typically expressed in megawatts (MW) or kcal (Kcal / H). ≤1.4MW boiler thermal efficiency, exhaust temperature is not higher than the inlet temperature of the medium 50 ℃. Thermal efficiency> 1.4MW boiler, the exhaust gas temperature not higher than 170 ℃. 2, the cycle of water: boiler water circulation system, the amount of water recycled. Circulating water boiler G = Q * 0.86 * 10 ^ 6 / ΔtQ: boiler thermal power units (MW) Δt: access to water temperature, 3 atm unit (℃): under standard atmospheric pressure at sea level, is 101.325KPa . Pressure: atmospheric pressure higher than normal atmospheric pressure. Vacuum: air pressure below standard atmospheric pressure. 4, heating surface: the surface of the heat transfer medium to absorb heat from the heat medium, such as a boiler furnace, cylinder, pipe, etc.. Radiation heating surface: the radiation heat receiving surface mainly absorbing heat from the heat transfer manner exothermic medium, such as a water wall furnace, the drum abdominal wall. Convection heating surface: mainly convective heat transfer from the high temperature flue gas absorbing manner heating surface of heat, smoke is generally flush heating surface, smoke pipe, convection banks and the like. 5, the thermal efficiency of the boiler: the percentage of the effective use of heat boiler and the fuel consumption per unit time of heat. The higher thermal efficiency, better heat transfer performance. 6, steam quality: cleanliness steam, saturated steam is generally more or less saturated with trace amounts of moisture, with the difference between the steam quality than the standard amount of water. 7, fuel consumption: the amount of fuel consumed by the boiler per unit time. 8, emissions: the amount of sewage discharged boiler blowdown. 9, the natural circulation: relying on the furnace decreased working fluid between the tube and the density difference between the riser furnace actively promote water circulation boiler drum, the drum is recycled back route, the downcomer, the header, the riser pipe, tubing, etc., is introduced soda composition. Forced circulation: boiler water or steam to not only water vapor density difference as a driving force, but also provide some external pump power to circulate in the heating duct. 10, small boilers: water volume ≤50L, and ≤0.7MPa rated steam pressure 150t h industrial steam boiler in textile factorys; Rated water pressure does not exceed 0.1MPa water pressure hot water boilers and hot water boilers.