Test the air leakage rate of the hot and cold sulfate heat exchangers?
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How can one determine whether a heat exchanger is leaking (with SO2 and SO3 mixing), namely whether the pressure of SO3 inside the tube is higher than that of SO2 outside the tube, or vice versa? How is a judgment generally made? It was determined that there is a leak
The specific details depend on what raw materials are used to produce acid, as well as on the heat exchange method and the type of heat exchanger employed