Is the absorption tower operated continuously or intermittently?
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At the gas outlet, the purified gas coming out of the tower is discharged directly into the air. The atmospheric pressure is lower than the pressure inside the tower; therefore, there must be a throttle valve or a vent valve at the gas outlet, otherwise the pressure inside the tower would be the same as the atmospheric pressure How can the pressure inside the tower be maintained? Is it by relying on pumps? The gas that enters at the bottom of the absorption tower exits from the top; is this exhaust operation carried out intermittently? Please advise, experts
I think (not very professionally): The gas that enters at the bottom of the absorption tower exits from the top, and this process is continuous. The pressure inside the tower is used solely to overcome the operational pressure drop, that is, the energy required for the gas to move from the bottom to the top of the tower, passing through the packing/interior components or various layers of trays.
If it is continuous, the pressure inside the absorption tower is 1 Mpa. To avoid significant pressure losses, the valve located there must be kept closed tightly; this valve functions as a throttle valve, which would result in substantial energy losses