Nitrogen oxide flue gas absorption and acid production system

Abstract

The invention relates to a nitrogen oxide flue gas absorption and acid production system. The system comprises a flue gas conveying device, an oxygen-containing gas distribution conveying device, a plurality of acid production tanks, a plurality of absorbers and an exhaust gas purifier; the acid production tanks are sequentially arranged in a sequential order, and a liquid inlet and a first gas outlet are formed in the upper end of each acid production tank and communicated with the interior of the acid production tank; the absorbers correspond to the acid production tanks one to one, and a liquid discharge port of each absorber is communicated with the liquid inlet of the corresponding acid production tank; output ends of the flue gas conveying device and oxygen-containing gas distribution conveying device are separately communicated with a gas inlet of the absorber corresponding to the foremost acid production tank; the exhaust gas purifier is communicated with the first gas outlet of the rearmost acid production tank; the first gas outlet of each front acid production tank is communicated with the gas inlet of the absorber corresponding to the adjacent rear acid production tank;acid circulation outlets of the acid production tanks are all communicated with liquid inlets of the corresponding absorbers. The system has the advantages that the smoke treatment effect is good, energy is saved, and the environment is protected.

Description

technical field [0001] The invention relates to flue gas acid production technology, in particular to a nitrogen oxide flue gas absorption system for acid production. Background technique [0002] Nitrogen oxides (NOx) have been identified as one of the main pollutants in the atmosphere since the 1960s. Nitrogen oxides (NOx) as air pollutants often refer to NO and NO 2 . Its impact on the environment is mainly manifested as exacerbating the depletion of the ozone layer, promoting the greenhouse effect, forming photochemical smog and acid rain, and causing damage to plants. The hazards of nitrogen oxides to the human body include irritating the eyes, causing cancer, respiratory diseases, cardiovascular and cerebrovascular diseases and other diseases. [0003] The denitrification equipment used in general industrial nitrogen oxide emission control has a large amount of nitrogen oxide emissions, a wide range of fluctuations in the concentration of nitrogen oxides, a high moi...

AI Technical Summary

Problems solved by technology

At present, the lye absorption process commonly used in the industry, the tail gas is difficult to discharge up to the standard, and the waste water produced at the same time contains nitrite, which is a carcinogenic compound. At present, there is no economical treatment process

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