Oxynitride waste gas treatment device and oxynitride waste gas treatment method

Abstract

The invention belongs to the technical field of waste gas treatment, and particularly relates to an oxynitride waste gas treatment device and an oxynitride waste gas treatment method. The oxynitride waste gas treatment device comprises an acid washing unit, a water washing unit, an alkali washing unit and a draft fan, wherein the acid washing unit is provided with a plurality of acid washing absorption towers which are connected in series; the water washing unit is arranged at the latter station of the acid washing unit and connected with the acid washing unit in series, and comprises a water washing absorption tower; the alkali washing unit is arranged at the latter station of the water washing unit and connected with the water washing unit in series, and comprises an alkali washing absorption tower; the bottom of each absorption tower is respectively provided with a waste gas inlet and a liquid outlet, and the top is respectively provided with a waste gas discharge port and a liquid inlet; the top of the first acid washing absorption tower is provided with an air inlet; each absorption tower is provided with a suction pump of which the inlet and outlet are respectively connected with the liquid outlet and the liquid inlet; an inlet of the draft fan is connected with a waste gas discharge port of the alkali washing absorption tower, and an inlet of the draft fan is connected with an inlet of a gas-liquid separator; and a gas outlet of the gas-liquid separator is connected with a gas inlet of a dry-type adsorption tower. The invention solves the following problems: the existing treatment device can not absorb NO, but only can absorb NO2, and abundant industrial waste salts generated in the waste gas treatment process can bring about secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a nitrogen oxide waste gas treatment device and a nitrogen oxide waste gas treatment method. Background technique [0002] Proton pump inhibitors are widely used in the treatment of digestive system diseases, and are drugs with better efficacy in treating peptic ulcer in recent years, such as: omeprazole, esomeprazole, rabeprazole, pantoprazole, etc. main component, but a large amount of nitrogen oxides (N0 X ) waste gas, pollutes the environment, is difficult to absorb, and restricts the industrialized production of this type of product. [0003] Nitrogen oxide exhaust gas has great damage to the environment. It is not only one of the main substances that form acid rain, but also an important substance that forms photochemical smog in the atmosphere and ozone depletion (O 3 ) is an important factor. Nitrogen oxides include compounds such as nitrous oxi...

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Problems solved by technology

[0005] The object of the present invention is to provide a nitrogen oxide waste gas treatment device and a nitrogen oxide waste gas treatment method, aiming at solving the problem that the oxide waste gas treatment device provided in the prior art cannot absorb NO, but can only absorb NO 2 , and the problem of secondary pollution caused by a large amount of industrial waste salt in the process of waste gas treatment

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