Evaporation of chlor-alkali electrolyte
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This post was last edited by sunjl1981 on 2013-1-6 at 19:52. Could everyone please tell me what types of evaporators are most commonly used for the evaporation of chlor-alkali electrolyte in China (such as rising film, falling film, forced circulation, etc.), and how many stages are typically used in such processes? # ， ， &
Our factory produces 100,000 tons of caustic soda by the diaphragm process annually, using a three-effect counter-current evaporation system that requires forced circulation. .
May I ask what is the cleaning cycle time on the second floor? Our effective operating time is too short (40 hours), steam consumption is high, and costs are above budget. Could you give us some advice?
Frequent washing is usually caused by problems in the salt extraction system; uneven feeding and discharging lead to the formation of granular salt crystals in the heating chambers of the 2nd and 3rd stages, which reduces the heat exchange efficiency between the electrolyte and steam and increases steam consumption
Salt extraction, high salt content in the mother liquor (due to inadequate separation of salts and alkalis using a centrifuge), and overly low or high levels of effluent fluid can all have an impact.
Our previous setup was: 3-effect counterflow, forced circulation. The falling film concentrator is from Botter in Switzerland! :lol