Ammonia absorption
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It is mainly about how to ensure thorough absorption of ammonia. This post was last edited by chinazwr on 2009-4-22 06:49.]
The question is too general; for example, what should be used as an absorbent?
Is it pure gaseous ammonia or ammonia-containing vent gas? Just wash it with water; make sure there is an adequate flow of water and sufficient absorption pressure
A plate absorber that uses sprayed mist water, with multiple stages connected in series. The water used for absorption can be recycled (it needs to be cooled first). The absorption is very thorough, and it’s difficult for any ammonia odor to emerge from the vent pipes. In a plate tower, layers of trays are installed inside the tower, with the liquid entering from the top of the tower. Gas enters from the bottom of the tower; there are various types of plate towers for gas-liquid mass transfer. They can be roughly divided into two categories: one is the downcomer type, such as bubble column towers, sieve plate towers, floating valve towers, S-shaped single-flow plate towers, tongue plate towers, and floating jet towers ； Another category is cross-flow plate columns, such as cross-flow grid plate columns (trickle plate columns), corrugated cross-flow plate columns, diamond-shaped slotted plate columns, short-tube cross-flow plate columns, etc
I really have no idea; is it ammonia absorption in the ammonia recovery process, or simply the absorption of gaseous ammonia?
Ammonia is volatile with a high saturated vapor pressure; to achieve complete absorption, Henry’s law of absorption requires sufficient pressure. Therefore, in addition to an efficient absorption tower, complete absorption must be accomplished at low temperatures or under increased pressure.