Multilevel plasma ultralow intensified smoke emission control system and multilevel plasma ultralow intensified smoke emission control method

Abstract

The invention discloses a multilevel plasma ultralow intensified smoke emission control system and a multilevel plasma ultralow intensified smoke emission control method. The multilevel plasma ultralow intensified smoke emission control system comprises a reaction tower with a smoke inlet and a smoke outlet, the reaction tower is internally separated into a plasma dry oxidization section, a smoke path switching section, a spraying absorption section and a plasma oxidization absorption section, the smoke inlet is formed below the plasma dry oxidization section, a corona discharge plasma generator is arranged in each of the plasma dry oxidization section and the plasma oxidization absorption section, a pole plate sprayer is arranged above the plasma oxidization absorption section, a liquid collection device for stopping smoke from passing through is arranged in the smoke path switching section and is externally connected with a liquid cycling tank, a smoke lifting device allowing the smoke to pass through is arranged on the outer side of the smoke path switching section, and the spraying absorption section is provided with a spraying absorption layer. The multilevel plasma ultralow intensified smoke emission control system and the multilevel plasma ultralow intensified smoke emission control method have the advantages that NO (nitric oxide) can be oxidized to NO2 (nitrogen dioxide), SO2 (sulfur dioxide), the NO2 and dust in the smoke can be absorbed totally and then held in a desulfurization and denitration dedusting liquid tank, and finally the outlet smoke can reach an ultralow emission standard.

Description

technical field [0001] The invention relates to a coal-fired boiler flue gas treatment ultra-low emission reaction tower, in particular to a multi-stage plasma enhanced flue gas ultra-low emission control system and method. Background technique [0002] "One coal dominates" is a prominent feature of my country's energy resources. In the first 30 years of this century, coal will still occupy a dominant position in my country's primary energy composition. In the process of burning coal, a large amount of SO will be produced. 2 , NOx (mainly NO, NO 2 ), smoke and other air pollutants. These air pollutants are very harmful to human beings and the ecological environment due to their concentrated emission, high emission concentration and large total emission. such as SO 2 After being oxidized into sulfuric acid mist or sulfate, it combines with fine particles in the air and enters the human respiratory tract and lungs, causing bronchitis, pneumonia, pulmonary edema and other m...

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Problems solved by technology

[0004] Traditional denitrification technologies include SCR and SNCR, and desulfurization methods include wet flue gas desulfurization. Wet desulfurization devices have high desulfurization efficiency, but the denitrification efficiency is almost negligible

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