The need for Coagulation Water Treatment
June 1, 2010 Leave a Comment
According to Air unit in large volume water vapor system, the characteristics of a large contact surface, although the cooling water is not contaminated condensed water.
But the large systems are difficult to maintain an absolute vacuum. This is not due to poor welding, and leak occurred mostly in the flange joints. As the aging of sealing materials, and even contact with the atmosphere of the small joints, are due to CO2 into the air leakage into the water system to lower pH values, causing corrosion.
System material is mostly carbon, so the system over the metal oxide corrosion products, of which the most iron corrosion products. Corrosion rate is not normal operation, but the infrastructure at the unit stage, the shutdown period, the start to protect properly, do not rinse the net, did not use dematerialized water rinse and load changes and other factors exacerbated the erosion. When the boiler feed water control is not operating at that time, will bring a number of soluble salts, when the hydrophobic of untreated back when the system will cause some pollution.
Therefore, the primary task of condensation water is removed metal corrosion products, silicon rubber, suspended impurities, should also remove soluble salts, this setting should be considered Condensate Treatment Unit. Should normally be under the specific circumstances of the project, such as the unit parameters, boiler type, hydraulic conditions and water quality requirements of units to be determined.
