System for producing strong ammonia water by absorbing ammonia in air

Abstract

The invention relates to a system for producing strong ammonia water by absorbing ammonia in the air, which comprises an absorption system for absorbing the ammonia in the air and a desorption system for producing the strong ammonia water, wherein the absorption system comprises an absorption tower provided with a plurality of circulating spray units; the circulating spray units are arranged on the absorption tower by means of subsection according to different heights; the desorption system comprises a tar removal unit, a separator, a desorption tower and a strong ammonia water sink; one end of the tar removal unit is connected with a branch pipe of a circulating spray unit at the bottom of the absorption tower so as to remove tar of a partial pregnant solution, and the other end of the tar removal unit boosts the pressure of the pregnant solution after tar removal through a pregnant solution pressure boost pump and leads the pregnant solution into the separator; and the upper part of the separator is connected in parallel with an ammonia-containing gas inlet through a connecting duct and inputs sour gas in separated pregnant solution into the absorption tower, and the lower part of the separator draws out and outputs the pregnant solution to the upper part of the desorption tower. The invention applies the system to produce the strong ammonia water and not only can effectively remove the ammonia in the air and meet the requirements of production and environmental protection but also can obtain available strong ammonia water.

Description

technical field [0001] The invention relates to the field of deammonization and reuse of chemical gas, in particular to a system for producing concentrated ammonia water for absorbing ammonia in ammonia-containing gas. Background technique [0002] A large amount of impure gas is produced in industrial production, and these gases contain a large amount of ammonia. In order to remove the ammonia, the sulfuric acid washing method is currently used to make the sulfuric acid react with the ammonia in the gas to form ammonium sulfate, thereby removing the ammonia in the gas. . This method has large consumption of sulfuric acid, high cost, and long-term production loss; and because the market capacity of ammonium sulfate is limited, the ammonium sulfate produced in large quantities has caused sales difficulties. Contents of the invention [0003] The purpose of the present invention is to provide a system for producing concentrated ammonia water that absorbs ammonia in the gas,...

AI Technical Summary

Problems solved by technology

This method consumes a lot of sulfuric acid, high cost, and long-term production losses; and because the market capacity of ammonium sulfate is limited, the large-scale production of ammonium sulfate has caused sales difficulties

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