High-performance physical dust removal and desulfurization integrated absorption tower

Abstract

An alkaline slurry and flue gas contact time is long, the contact area is large, the reaction is sufficient, the desulfurization effect is good, the sulfur content in the discharged flue gas is extremely low, and the dust content is low. The high-performance physical dust removal and desulfurization integrated absorption tower, Including the tower body, the special feature is that a flue gas flow equalizer is installed above the flue gas inlet in the tower body, and a plate frame arranged up and down in layers is arranged on the upper part of the tower body. and each group of panels is composed of multiple panels arranged side by side and penetrating through the tower body. On the back of the panels arranged up and down, there is an anti-corrosion water bag with an open upper end. There are multiple strip-shaped water bags arranged side by side, and each water bag corresponds to a water nozzle. On the tower body, a water pipe is arranged above the plate frame, and a plurality of water nozzles are installed on the water pipe. The water outlet of the water nozzle It is located in the upper port of the water bladder of the corresponding water bladder cloth bag.

Description

technical field [0001] The invention relates to a high-performance physical dust removal and desulfurization integrated absorption tower. Background technique [0002] The wet FGD process belongs to the desulfurization technology of coal combustion. The countercurrent spray tower is a relatively commonly used wet desulfurization absorption tower. The flue gas enters from the lower part of the absorption tower, and the desulfurizer is sprayed into mist through the upper nozzle. The droplets are in contact, and most of the droplets are kept in suspension by the flue gas in the tower. A two-stage demister is installed at the outlet of the absorption tower to remove the mist droplets carried in the flue gas, and the purified flue gas is discharged from the flue outlet at the bottom of the tower. The absorption tower is divided into an absorption zone, an oxidation zone and a neutralization zone from top to bottom. The absorption zone is located within 300 mm below the spray pip...

AI Technical Summary

Problems solved by technology

The process of SO2 in the flue gas dissolving into the absorbing liquid almost all takes place in the absorption zone, where only part of the HSO3 is oxidized to H2SO4 by the O2 in the flue gas, because the contact time between the lye and the flue gas in the absorption zone is only For a few seconds, the contact time is short and the contact area is small, resulting in insufficient reaction, the sulfur content in the exhausted flue gas cannot meet the requirements, and the effect of flue gas treatment cannot meet the national standard, causing adverse effects on the environment

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