Webb6 dec. 2024 · Scales are formed by substances like Ca(HCO3),,, , CaSO, and Mg(OH)o., , Table 1.1 Comparison of Scales and Sludges, , , , , , Sludge is a loose, slimy, and non … WebbTo avoid scale formation chemicals added to boiler water are c a. Sodium carbonates b. Sodium sulphides c. Sodium phosphates d. Sodium sulphites 64. Increase in temperature of water decreases the solubility of c a. MgSO4 b. Na2SO4 c. CaSO4 1 d. ZnSO4 65. Ill effects of scale formation in boilers are d a. Wastage of fuel b.
What is the difference between sludge and scale Why are they …
WebbHow to Prevent it? Action in Case of Priming. by Bijoy Chandrasekhar. 0. Foaming is the formation of thick layer of steam bubbles on the top of the water surface inside the boiler due to: > Increased level of dissolved solids. > High impurities. > Increase in water level. > High dosage of chemicals. WebbSludge noun A sediment of accumulated minerals in a steam boiler. Scale noun A flake of rust. Sludge noun A mass of small pieces of ice on the surface of a body of water. Scale noun A hard mineral coating that forms on the inside surface of boilers, kettles, and other containers in which water is repeatedly heated. Sludge noun sludge metal graham texas movie theatre
BOILER PROBLEMS - SlideShare
Webb22 apr. 2024 · Sludge noun Anything resembling mud or slush; as: (a) A muddy or slimy deposit from sweage. (b) Mud from a drill hole in boring. (c) Muddy sediment in a steam … Webb6 juni 2015 · In case of internal boiler water treatment, chemicals are added to the boiler to prevent the formation of scale by converting the scale forming compounds to free flowing sludges, which can be removed by-blow down. The chemicals are also added to prevent corrosion, priming and foaming. Purpose of using boiler water treatment chemicals Webb22 nov. 2024 · Caustic embrittlement is a phenomenon that takes place in a steam boiler when the caustic substances gather in the materials of the boiler. It is also characterized by the cracking of riveted mild steel boilerplates. Caustic embrittlement takes place at the temperature range of 200°C to 250°C. graham texas livestock auction