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Scale Formation and Its Prevention in Feed-Water


Prof. Dr. K N Sheth , Director, Faculty of Management, SSESGI, Rajpur, Gujarat, India


Scale Formation, Prevention in Feed-Water


attempt has been made in this paper to discuss the nature and various categories of boiler depositions- its physical properties and chemical composition, the impacts of the scale formation on the boiler along- with the preventive measures. Scale formation is not only a nuisance but a menace. Scaled boilers require a greater temperature differential between metal and water than clean boilers operated at the same rating. This is because scale has a very low thermal conductivity. The principal deposition is calcium carbonate, magnesium hydroxide, calcium sulphate and silica. Most of the scale forming constituents is removed from feed water by external treatment. Residual concentration is removed by supplemental treatment. Precipitation of hardness is controlled by adding softening chemicals to the feed water.

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Paper ID: IJSRDV5I40188
Published in: Volume : 5, Issue : 4
Publication Date: 01/07/2017
Page(s): 199-201

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