Analysis of scaling causes and anti-scaling countermeasures of external cooling system of large-scale synchronous condenser in Northwest region of China
The fouling of heat exchangers and cooling tower fill surfaces in the external cooling water system of synchronous condenser can significantly impede the heat transfer efficiency of cooling towers,posing a serious threat to the safe operation of synchronous condenser.In order to propose more effective anti-fouling measures and elucidate the causes of fouling,this study employed characterization techniques such as SEM-EDS,XRD,FTIR,etc.,to analyze the microscopic morphology and chemical composition of fouling samples.Additionally,chemical analysis methods and ICP-MS were used to analyze the makeup of makeup water and circulating water in the system.The test results revealed that the primary components of fouling in the external cooling system are CaCO3,SiO2and CaSiO3.The fouling in the cooling system is closely related to the absence of wastewater discharge measures in the system,high concentration ratios during operation,and the infiltration of regional windblown sand.This research contributes to proposing targeted anti-fouling measures for on-site operation of such cooling systems,ensuring the economic and operational safety of synchronous condenser.
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