Should concentrated sodium thiosulfate be insulated for use in winter?
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Dear sea friends, our company has just upgraded its hypochlorite preparation system; now, concentrated hypochlorite (13%) is used and then diluted by adding water. I would like to know which companies have used this system before – do they insulate the pipes carrying concentrated hypochlorite? Here, the winter temperature is -25°C, the pipe diameter is DN32, and the flow rate is 0.2 m3/h.
It’s necessary; otherwise, salt precipitation is likely to occur, leading to blockages
At what temperature does the salt precipitate? Could we have a detailed discussion on this? :handshake
By cooling a sodium hypochlorite solution to -20°C, NaClO·5H2O crystals can be obtained; by removing the crystalline water under vacuum at temperatures below 10°C, these crystals are obtained, with the temperature generally needing to be above -5°C.