Asked by Andy Blackwell Uncategorized
Dm plant how work in Boiler water?
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How DM plant are design?
Since there is continuous withdrawal of steam and continuous return of condensate to the boiler, losses due to blowdown and leakages have to be made up to maintain a desired water level in the boiler steam drum. For this, continuous make-up water is added to the boiler water system. Impurities in the raw water input to the plant generally consist of calcium and magnesium salts which impart hardness to the water. Hardness in the make-up water to the boiler will form deposits on the tube water surfaces which will lead to overheating and failure of the tubes. Thus, the salts have to be removed from the water, and that is done by a water demineralising treatment plant (DM). A DM plant generally consists of cation, anion, and mixed bed exchangers. Any ions in the final water from this process consist essentially of hydrogen ions and hydroxide ions, which recombine to form pure water. Very pure DM water becomes highly corrosive once it absorbs oxygen from the atmosphere because of its very high affinity for oxygen. The capacity of the DM plant is dictated by the type and quantity of salts in the raw water input. However, some storage is essential as the DM plant may be down for maintenance. For this purpose, a storage tank is installed from which DM water is continuously withdrawn for boiler make-up. The storage tank for DM water is made from materials not affected by corrosive water, such as PVC. The piping and valves are generally of stainless steel. Sometimes, a steam blanketing arrangement or stainless steel doughnut float is provided on top of the water in the tank to avoid contact with air. DM water make-up is generally added at the steam space of the surface condenser (i.e., the vacuum side). This arrangement not only sprays the water but also DM water gets deaerated, with the dissolved gases being removed by an air ejector attached to the condenser.
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What is the MEANING OF bop power plant?
Asked in Chemistry, Definitions, Water Pollution
What is the definition of dm water?
Demineralised water. DM water is demineralised water . Dissolved impurities and dissolved gases in water. Some times water is hard, temperary hardness or permanent hardness and which is badly affects the boiler which helps formation of scales in sides the boiler. In the process of purification of water Coagulation, sedimentation, filteration are the first stages. After filteration water allowed to enter into Activated carbon filter for absorbing dissolved carbondioxide. For removing temporary hardness and permanent hardness ion exchanging process used. By Ion - exchange process from which the minerals have been removed and get Demineralized water.
Asked in Chemistry
How OBR calculated for DM plant having SBC and SBA?
Why sodium only slips than other ions in SAC in dm plant?
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What is the procedure for preparations of DM water for power plant operation?
Asked in Math and Arithmetic
What is the perimeter of 3.4 dm 5.65 dm and 6.85 dm?
How many liter water will come in 3 feet long 3 feet breath and 6 foot deep tank?
Volume = 3 ft * 3 ft * 6ft = 9.144 dm * 9.144 dm * 18.288 dm = 1529.1 litres (approx). Note: 1 litre = 1 decimetre3 Volume = 3 ft * 3 ft * 6ft = 9.144 dm * 9.144 dm * 18.288 dm = 1529.1 litres (approx). Note: 1 litre = 1 decimetre3 Volume = 3 ft * 3 ft * 6ft = 9.144 dm * 9.144 dm * 18.288 dm = 1529.1 litres (approx). Note: 1 litre = 1 decimetre3 Volume = 3 ft * 3 ft * 6ft = 9.144 dm * 9.144 dm * 18.288 dm = 1529.1 litres (approx). Note: 1 litre = 1 decimetre3