Sulfuric acid concentration after waste acid regeneration
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I would like to ask everyone: in the waste acid regeneration unit of an alkylation plant, is the concentration of sulfuric acid at the outlet stable? And what is the typical range of fluctuations?
Are you referring to the concentration of the finished acid or the concentration of the raw waste acid?
Using the WSA process, the concentration of sulfuric acid is generally between 97-97.5%； When the DuPont process is used, the concentration is usually above 98%.
Using the WSA process, the sulfuric acid concentration is around 97%, but it is significantly affected by factors such as fuel composition, operating conditions, climate, and the composition of waste acid; as a result, the acid concentration fluctuates greatly and tends to be low, making optimization difficult； However, it features a high acid recovery rate, a simple process, and a compact structure. Several chemical processes, with concentrations typically above 98% ； The process is relatively long, the acid recovery rate is relatively low, and equipment corrosion is relatively severe.
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