Design of the water addition line for the pump tank in the absorption unit
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To dilute the acid concentration by adding water to the pump tank of the absorption unit, a mixed acid mixer is first installed on the acid return pipeline, where deionized water is added； The second method is to directly add deionized water into the pump tank (this insertion tube is made of high-silicon cast iron with Teflon lining on both the inside and outside) to adjust the acid concentration. I would like to ask the experts if there are any other methods, and from a long-term operational perspective, which of these two methods is the best? It is understood that mixers have a short service life and are prone to leaks; although their production is simple, the quality varies greatly. Another point: someone posted before saying that there is a lot of acid mist and acidic sludge generated? Are there any other good methods?
It is possible to consider adding a spraying device inside the tower, using desalinated water for spraying; this would create a two-layer spraying system alongside the spraying in the pump return pipeline of the absorption unit, with the two systems operating independently of each other
Is it feasible to use this design in unbrick-lined towers? The acid temperature inside the tower will increase significantly, right?
Absorption is definitely an exothermic process; spraying into the tower merely transfers the heat generated in the pipes to within the tower
A simple rigid PTFE tube inside the groove is sufficient; it’s not that complicated