Common primary-line pump
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What is the purpose of the return flow to the tower at the outlet of the normal primary pump?
The pump used in my work is usually a variable-frequency pump; it has two outlets – one for normal discharge from the device and another for returning fluid to the tower. I would like to know what the purpose of returning fluid to the tower is
It’s usually present at the outlet of the primary pump; this line isn’t used in normal operations
It is considered to be the minimum return line for the pump, intended to prevent pump stall or to maintain the operation of the pump when the processing load is low. The pumps in our devices basically all have
Some devices on this line have it, while others don’t； It is mainly intended to serve as the minimum return line for the pump, to prevent pump blockage or to maintain the operation of the pump when the processing load is low. Our units don’t have any pumps ； However, a pressure reduction tower is available; mainly, the pump outlet passes through a heat exchanger before entering the tower again, and the temperature of the fluid returning to the tower at this point is controlled ；
Is it the original start-up to establish the tower cycle?
Looking at the structure of your tower, if the first line is completely drawn out, it is used for internal recirculation；