A wet purification and dust removal device for realizing ultra-low emission of particulate matter

Abstract

The invention discloses a wet purification and dust removal device for realizing ultra-low emission of particulate matter, which comprises an atomization collection tower, a spray tower, and a cyclone dehydration tower; Atomizing nozzles are arranged on the inner upper part of the tower, and the bottom of the atomizing and collecting tower communicates with the bottom of the spray tower; nozzles are arranged on the inner upper part of the spray tower, and the gas phase outlet at the top of the spray tower communicates with the upper gas phase inlet of the cyclone dehydration tower; The top of the cyclone dehydration tower is provided with a purified gas outlet pipe. The present invention adopts the wet dedusting principle of atomization trapping and spray trapping, combined with the uniform flow distribution effect of the airflow uniform distribution plate, the collision and bending effect of the upper and lower two-layer spoiler trays on the dust-laden airflow, and the upper and lower two-layer splashes The collision and bending of the tray to the spray water promotes the full contact of the water vapor, which effectively purifies and washes the dusty airflow; at the same time, the cyclone dehydrator in the device dehydrates and dehumidifies the gas after dust removal.

Description

technical field [0001] The invention belongs to the technical field of dust removal, and in particular relates to a wet purification and dust removal device for realizing ultra-low discharge of particulate matter. Background technique [0002] While promoting social development, industry has also caused great pollution to the air environment. Particulate matter emissions have become the focus of attention in the field of flue gas purification and environmental protection. In May 2018, the Ministry of Ecology and Environment issued the "Steel Enterprises Ultra-Low Emission Transformation Work Plan (Draft for Comment)", which clarified that the emission of particulate matter in multiple fields should be <10mg / Nm 3 . At present, most of the existing air purification devices adopt electrostatic treatment or wet dedusting, in which the excess ozone generated in the process of electrostatic dedusting will cause secondary pollution of the air and cause harm to human health; whi...

AI Technical Summary

Problems solved by technology

At present, most of the existing air purification devices adopt electrostatic treatment or wet dedusting, in which the excess ozone generated in the process of electrostatic dedusting will cause secondary pollution of the air and cause harm to human health; while in the field of wet dedusting, currently The purification devices used are mainly divided into packing type and structural type. The packing type has large running resistance, difficult packing cleaning, and high maintenance costs; most structural types have unsmooth air flow, inconvenient maintenance, uneven and incomplete water and vapor mixing, and low dust removal efficiency. low problem

The key is that neither of the above two methods can achieve particulate emission 3 requirements

Images