Issues with the tower top reflux process in the sulfonamide solution regeneration system?
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Currently, for the conventional amine solution regeneration reflux method 1, a tower top reflux tank is used (the temperature at the tower top is around 115 degrees; after cooling, the fluid enters the reflux tank, with the gas phase being desulfurized and the liquid phase being used for reflux). 2. A top-loop recirculation system is adopted (an accumulation tank is designed at the 5th tray of the regeneration tower; the liquid is pumped out using a recirculation pump, cooled, and then fed back to the top of the regeneration tower, where the temperature is maintained at 40 degrees). Dear sea friends, please share your opinions on the advantages and disadvantages of these two approaches
I came here to learn *; I’ve been working on top of the reflux tank all this time.
The first method is commonly used nowadays, while the second one is rarely seen. If the second method is adopted, the amount of liquid in the acidic gas will increase, leading to losses of amine solution. Frequent separation operations for sulfur-containing acidic gas are required, and the presence of amine can easily cause blockages in the instrumentation pipes and sampling pipes. If the amine solution concentration is low and needs to be concentrated, the concentration process cannot be carried out.