What flow rate circulation pump should be used for a falling film absorption tower?
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Question: For the absorption of hydrochloric acid exhaust gas in a 40 square meter falling film absorber, what flow rate is appropriate for the circulation pump?
The flow rate of the circulation pump is related to the air intake volume; generally, a gas-liquid ratio of 300-500 should be sufficient.
Amount of absorbent used: It depends on the concentration of the gas to be recovered. Taking an absorber with a surface area of 10 m2 for absorbing HCl as an example, the amount of absorbent required is generally 10–20 m3/h. To improve absorption efficiency, the temperature of the absorbent should be kept as low as possible.