Suspension cooling tower filler cleaning the need for what

The hyperbolic cooling tower is one of the important cold end equipment of the steam turbine generator set, and its cooling performance is very important to the economic and safe operation of the power station. From the structure of the hyperbolic cooling tower, it can be seen that the watering device is one of the main factors that affect its cooling performance.
The cooling tower is composed of S wave or oblique wave filler, water collector and nozzle. The ladle is the main component that affects the heat performance of the cooling tower, which is the core of the heat and mass transfer of the water and gas in the cooling tower. Its role is to flood the water distribution system to form a water film or small water droplets to increase the water and air contact area and extend the flow of water in the tower to create a good heat transfer and mass transfer conditions. It is generally said that the cleaning tower mainly refers to the cleaning of leaching filler.
The hyperbolic cooling tower's water circulation system is an open cooling system where dust and other debris are easy to access. In addition, the cooling water in the circulatory system in the continuous use, due to the water temperature, water velocity changes and water evaporation, a variety of inorganic ions and organic matter concentration and equipment structure and materials and other factors combined effect , Will produce more serious than the DC system attached to the deposition of sediment and the proliferation of micro-organisms, and the resulting clogged dirt clogging filler and other issues, seriously affect the cooling effect and damage the steam turbine condenser safe production, and even cause economic Loss [1] Specifically, the open cooling circulating water mainly has the following problems:
(1) scaling. Mainly due to two factors:
On the one hand, after the aeration tower, the water with CO2 from the air in the air, so that the water solubility of Ca (HCO3) 2 into a very small concentration of CaCO3, which precipitation, attached to the filler surface scale; Is due to the evaporation of concentrated water cycle, so that water Ca2 + ions, Mg2 + ions to saturation, precipitation into the scale.
(2) dust. The open cooling system makes it easy for dust debris to enter.
The cooling tower conveys dust-enriched air by dampening the water with air for forced convection, which is equivalent to water, so that it enters the system.
(3) ash. Individual power plants for the conservation, the use of clean water containing ash. When the ash contains water through the filler, due to the cooling tower water gap is small, the ash is easy to plug in the filler and with the dirt together. In severe cases, the combination of dirt and ash will be as hard as stones.
(4) biological slime. As the cooling cycle temperature is generally 30 ~ 40 ℃, and oxygen content, temperature suitable, especially for the growth and reproduction of bacteria, so as to breed a large number of algae in the cooling system to form slime. Viscose accumulation in the filler leaking gap, so that the cooling water flow reduced. Serious, these biological slime will block the filler, so that the cooling water can not be uniform, greatly reduce the hydrophilic area, a serious reduction in the cooling effect of the tower. Remove the sticky sludge under the jamming of the pending filler.
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