Seeking advice on scaling issues in Na2SO3 pipelines!

2007-12-03View Original

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We use an 12% concentration aqueous Na2SO3 solution, and nitrogen is introduced into the storage tank to prevent oxidation. However, after long-term use, a thick layer of scale formed on the inner walls of the pipes, and scaling also occurred frequently on the flow meter, causing the gears to get stuck and leading to shutdowns. Under normal conditions, Na2SO3 solutions should not experience scaling, right? The scale that forms is yellow and very hard. There are definitely impurities in the raw materials, but it’s not known what exactly they are! Does anyone know the production process of Na2SO3? What impurities might be present that could cause scaling in pipes and equipment? How to avoid scaling?

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Seeking advice on scaling issues in Na2SO3 pipelines!

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