ammonia recovery system

Abstract

The ammonia recovery system of the present invention includes: an ammonia absorption tower for absorbing ammonia from the gas being treated by dilution water; an ammonia water recovery line for recovering ammonia water (formed by dissolving ammonia in dilution water) from the ammonia absorption tower; a distillation tower for separating the ammonia water supplied via the ammonia water recovery line into ammonia gas and dilution water; and a dilution water supply line for supplying dilution water from the distillation tower to the ammonia absorption tower. The ammonia absorption tower includes a dilution water inlet, a first packed layer and a second packed layer, a gas inlet for introducing the gas being treated, a storage section for storing ammonia water, and an ammonia water circulation line for supplying ammonia water from the storage section to the space between the first and second packed layers.

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