Which manufacturers currently do not use sodium sulfite in the brine water after vacuum dechlorination, and have eliminated the addition of sodium hypochlorite in the brine processing step?
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This post was last edited by yhpsxj on 2020-2-29 at 16:07. Sodium sulfite is not added to the brackish water coming out of the vacuum dechlorination tower, thereby reducing or eliminating the use of sodium hypochlorite that is added during the removal of ammonia and humic substances from the crude brine. May I ask, which manufacturers are currently doing this?
Sodium sulfite is added; sodium hypochlorite is not added
Chlor-alkali plants are generally adding it; the amount used is already small and its cost contribution is not high. The benefits of saving this amount are less significant than the losses resulting from uncontrolled free chlorine levels, so it’s better to add it to ensure safety.
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May I ask, which peers are currently working on this?