Start-up and Improvements of the New Electrolysis Plant …
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Fig. 5 Schematic diagram of the new bypass pipe
Fig. 6 Electrolyte temperature change before and after installation of new bypass in winter
maximum current for several days. Because of the heat generated by the continuous
electrolysis operation, the electrolyte temperature rises abnormally even in winter,
so the temperature is adjusted using a cooling tower. Around the end of continuous
operation, noise and vibration were seen in the cooling tower fan. Observation of the
fan revealed that ZnSO 4 crystals were adhered to the fan blades and casing as shown
in Fig. 7.
If this is left untreated, there is a risk of operation stoppage due to blade damage.
We removed it promptly and examined measures to prevent recurrence.
This crystal adhesion was caused by several factors.
(1) The fan is too close to the cooling tower.
(2) The cooling tower shower nozzle is installed too close to the fan.
(3) The electrolyte temperature was dropped during the winter, and the fan output
was lowered.