Purification system and method for high-dust concentration supersaturated peculiar smell gas

Abstract

The invention discloses a purification system for high-dust concentration supersaturated peculiar smell gas. The top part of a gas collect cover is sequentially connected with a first draught fan and a smoke inlet of a mist and dust removal tower through pipelines; a gas outlet of the mist and dust removal tower is sequentially connected with a second draught fan and a gas inlet of an absorption purification tower through pipelines; a drain outlet is arranged on the bottom part of the mist and dust removal tower; a sewage pool is arranged below the drain outlet; a gas exhaust port is arrangedon the top part of the absorption purification tower; an absorbent inlet is arranged on the upper part of the absorption purification tower; an absorbent outlet is arranged on the lower part of the absorption purification tower; a drain outlet is arranged on the bottom part of the absorption purification tower; and a sewage pool is arranged below the drain outlet. The purification system for the high-dust concentration supersaturated peculiar smell gas is dust-resistant and water-resistant, high in adaptability and purification efficiency, durable in use and good in purification effect, and integrates functions of dust removal, odor removal and dehumidification; and smoke enters the mist and dust removal tower for removing part of harmful gas comprising NH3, H2S and the like, then enters the absorption purification tower for re-purification and removing volatile organic compounds (VOC) and the like, and finally is exhausted.

Description

technical field [0001] The invention belongs to the field of gas purification, in particular to a purification system for highly dust-containing supersaturated odorous gas. Background technique [0002] When preparing coke in sintering plants and steelmaking plants, it is necessary to cool down the coke. When using wet coke quenching or cooling steel slag with water, a large amount of supersaturated flue gas with high dust content will be produced, and the flue gas contains NH 3 、H 2 Harmful substances such as S, VOC, etc., currently use wet electrostatic precipitator or plastic burner plate dust collector to remove dust from the flue gas, but the wet electrostatic precipitator is expensive, the investment of the circulating water system is high, and the floor area is large, and the plastic burner plate is not resistant to high temperature. , to adapt to the flue gas change range is small, the flue gas temperature can not be too high, and the effect of dust removal and deod...

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Problems solved by technology

[0002] When preparing coke in sintering plants and steelmaking plants, it is necessary to cool down the coke. When using wet coke quenching or cooling steel slag with water, a large amount of supersaturated flue gas with high dust content will be produced, and the flue gas contains NH 3 、H 2 Harmful substances such as S, VOC, etc., currently use wet electrostatic precipitator or plastic burner plate dust collector to remove dust from the flue gas, but the wet electrostatic precipitator is expensive, the investment of the circulating water system is high, and the floor area is large, and the plastic burner plate is not resistant to high temperature. , to adapt to the flue gas change range is small, the flue gas temperature can not be too high, and the effect of dust removal and deodorization dehumidification is not good

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