Optimization of Factors Affecting the Rate of the Scale Formation on the Heat Transfer Surfaces
Keywords:
CIRCULATING WATER SYSTEM, SCALE FORMATION, WATER HARDNESS, WATER ALKALINITY, WATER TEMPERATURE, HEAT TRANSFER SURFACE, WATER TREATMENT, SCALE FORMATION INDEXAbstract
In the modern structure of the Donbass industrial production, a significant place is occupied by the enterprises of the energy, metallurgical and chemical industries. These industries are characterized by the circulating water supply systems. The main problem of such systems is the scale formation on the heat transfer surfaces, which leads to the decrease in the environmental and economic performance of enterprises as a whole. A number of techniques are developed to solve this problem. Their efficiency can be increased by taking into account and optimizing factors affecting the rate of the scale formation. Among these factors, the dependence of the scale formation rate and index on temperature is distinguished.
As a result of experimental studies, it is found that:
- An increase in temperature leads to the decrease in the scale formation index, that is, the higher the temperature at which the device operates, the more demineralized water is needed.
- To prevent scale formation, it is necessary to use water with an alkalinity to hardness < 7. This requirement can be met by water treated using ion exchange. It would be the most expedient to use carboxyl cation exchangers, since this is accompanied by a process of decreasing indicators of both water hardness and its alkalinity.
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