Boilers and cooling towers share two major water related problems: deposits and corrosion. As steam is generated by a boiler or water evaporating from a cooling tower, dissolved minerals are left behind, increasing the concentration of these minerals. Additional minerals are introduced via the water added to makeup the water lost to steam/evaporation. Eventually, the minerals reach a level (or cycle) of concentration that will cause either loss of efficiency due to scale or damage from corrosion. This level can be determined by the Ryznar or Langlier indices and correlated to a conductivity or TDS range. Most people recognize problems associated with corrosion. Effects from scale deposits, however, are equally important. For example, as little as 1/8` of scale can reduce the efficiency of a boiler by 18% or a cooling tower heat exchanger by 40%!
By Myron L Company based in Carlsbad, CALIFORNIA (USA).
In nearly all industrial areas steam is needed for different aims e.g. steam for process side, heating purpose or the generation of electricity. To reach the best efficiency of the boiler system an optimal boiler water treatment is essential. Disturbances in boilers caused by deposits, scaling, corrosion, local overheating or carryover into the steam reduce the operating safety and could lead to tremendous economic damages. Kurita delivers innovative technologies to prevent scale and corrosion in the whole boiler system - feed water tank, boiler, steam and condensate system.
By Kurita based in Tokyo, JAPAN.
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