Which type of circulation pump can be used for the absorption of chlorosulfonic acid exhaust gases?
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Question: Which type of circulation pump is suitable for the absorption of chlorosulfonic acid exhaust gases? Please, friends, help out! !
Choose a magnetic pump with ETFE lining; use a dilute alkaline solution for circulation
ETFE won’t work; a PFA lining and silicon carbide friction pair are required. Chlorosulfonic acid has an extremely strong oxidizing power, even stronger than fuming sulfuric acid.
No problem, bro. HNO3 has a stronger oxidizing power than chlorosulfonic acid, so it can also be used. PFA mainly offers better high-temperature resistance; its impermeability is not as good as that of ETFE and PVDF
The exhaust components of chlorosulfonic acid are mainly hydrogen chloride and sulfur trioxide; therefore, it is advisable to use liquid alkali at a concentration of around 15% for absorption in order to prevent salt crystallization. A mechanical seal pump made of high-density polyethylene will suffice, although the impeller is of the open type. Of course, a magnetic pump can also be used