What is the maximum temperature resistance of the pre-filter before the concentrated sulfuric acid pump?
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Since the company is planning to install a dilute acid concentration unit, which includes a packed distillation tower in its process flow, they are considering whether a basket filter can be added before the product acid pump. However, the temperature of the concentrated acid after secondary evaporation is around 170–180 degrees, and it is 96% concentrated sulfuric acid; therefore, it’s uncertain whether a suitable filter can be found. I was wondering if any members have experience in this area. Or if you have any suggestions regarding the product stability of the dilute acid concentration devices, please feel free to share them. Thank you very much!
Generally, stainless steel cannot withstand it. I was in contact with them before, but that was a long time ago.
It’s fine to use titanium material. But there is one problem: corrosion in the gas phase is significant, while corrosion in the liquid phase is minimal.