What are the correct steps for replenishing industrial boiler water softening equipment-Ocpuritech-i

What are the correct steps for replenishing industrial boiler water softening equipment?

by:Ocpuritech     2021-04-11
What are the correct steps for replenishing industrial boiler water softening equipment? Author: industrial boiler water softening equipment, including water supply, condensate treatment, water supply oxygen, water plus ammonia and pot-treatment of four parts. Then, the daily boiler water treatment can be divided into several parts. So, what are the replenishment steps in boiler water treatment? Boiler water treatment has different make-up water volume due to different steam usage and condensate recovery degree. The make-up water volume of condensing power station boilers is generally less than 3% of the evaporation capacity, and the make-up water volume of heating boilers can be as high as 100%. 1. Pretreatment When the raw water is surface water, the purpose of pretreatment is to remove suspended solids, colloids and organic matter in the water. A coagulant is usually added to the raw water to agglomerate the above-mentioned impurities into large particles, which will sink under their own weight, and then be filtered into clear water. When groundwater or city water is used as make-up water, it can be filtered directly. Commonly used clarification equipment includes pulse, hydraulic acceleration and mechanical stirring clarifiers; filtering equipment includes siphon filter, valveless filter and single-flow or dual-flow mechanical filters. In order to further remove the organic matter in the water, an activated carbon filter can be added. 2. Softening Use natural or man-made ion exchangers to convert calcium and magnesium hard salts into non-hard scale salts to prevent the formation of calcium and magnesium hard scale on the inner wall of the boiler tube. For water containing calcium and magnesium bicarbonate and high alkalinity, it can also be solved by the sodium hydrogen ion exchange method or in the pretreatment. 3. Desalination There are many types of ion exchangers used in chemical desalination, and cation exchange resins and anion exchange resins are commonly used, referred to as 'cation resin' and 'anion resin'. In the ion exchanger, when the brine flows through the resin, the cations and anions in the salt are converted to the cations (H+) and anions (OH-) in the resin and then removed. When the alkalinity of the water is high, it is generally required to connect a decarburizer in series to remove carbon dioxide after the cation exchanger. For water with particularly high salt content, reverse osmosis or electrodialysis can also be used to desalinate the water first, and then enter the ion exchanger for deep desalination. For drum boilers or once-through boilers above high pressure, the trace silicon in the feed water must be removed; medium and low pressure boilers are treated according to the content.
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