Scale formation and its effect on the performance of once through MSF plant
| Autor: | T. A. Khalifa, H.T. El-Dessouky |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Engineering
Scale (ratio) Fouling business.industry Mechanical Engineering General Chemical Engineering Environmental engineering General Chemistry Boiler water Desalination Corrosion Once through Air preheater General Materials Science business Condenser (heat transfer) Water Science and Technology |
| Zdroj: | Desalination. 55:199-217 |
| ISSN: | 0011-9164 |
| DOI: | 10.1016/0011-9164(85)80073-4 |
| Popis: | The paper presents a study of the effect of fouling, due to scale formation, of preheater tubes on the thermal performance of once through multi stage desalination plant. The mathematical model developed was used to find, the decrease in the plant performance ratio, and the increase of the ratio of make up water to the product quantity for a 500 ton/day once through MSF plant of 12 stages. Preheater tubes was examined microscopically after about ten years of intermittent operation at the once through MSF desalination plant at Matrouh. Although the copper alloys from which the preheater tubes were manfactured remained in a satisfactory condition, some scale deposits were observed. The chemical composition of these deposits varies, however the most common scale consists of calcium sulphate. Recommended materials for better performance of condenser tubes as well as water pretreatment for preventation of scale formation and corrosion are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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