High-performance integrated absorption tower for dust removal and desulfuration via physical method

Abstract

The invention relates to a high-performance integrated absorption tower for dust removal and desulfuration via a physical method, of which the contact time of alkaline serous fluid and smoke is long, the contact area is large, the reaction is sufficient, the desulfuration effect is good, the sulphur content in the discharged smoke is extremely low, and the smoke containing quantity is low, the high-performance integrated absorption tower for the dust removal and desulfuration via the physical method comprises a tower body, and is characterized in that: a smoke current equalizer is arranged above a smoke inlet in the tower body, the upper part of the tower body is provided with plate shelves which are arranged in a layered manner up and down, each layer of plate shelf is composed of multiple rows of inclined plate shelf groups in parallel, each group of plate shelf is composed of multiple plate shelves which are arranged in parallel and passes through the tower body, the back surfaces of the plate shelves arranged up and down are provided with antiseptic water sac cloth bags with openings at the upper ends, multiple strip-shaped water sacs arranged in parallel are arranged in the water sac cloth bags, each water sac is corresponding to a water nozzle, a water pipe is arranged above the plate shelf on the tower body, multiple water nozzles are installed on the water pipe, and the water outlets of the water nozzles are positioned in the upper end openings of the water sacs of the corresponding water sac cloth bags.

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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