Vortex-radial-acceleration dedusting and defogging device

Abstract

The invention discloses a vortex-radial-acceleration dedusting and defogging device. The vortex-radial-acceleration dedusting and defogging device comprises a cylinder, an air inlet, a vortex acceleration body and an air outlet, wherein the air inlet is formed in the lower end in the cylinder, the vortex acceleration body is mounted at the air inlet through a support plate, and the air outlet is formed in the upper end in the cylinder; the vortex acceleration body comprises a central body, a diverging pipe, an annular air duct and vortex blades, and the central body and the diverging pipe are coaxial, are arranged on the support plate and are fixedly connected with the support plate; the central body is a sealed cavity and is a curved-surface body with a large upper end and a small lower end, the section diameter, from bottom to top, of the diverging pipe continuously increases, and the diverging pipe is a hollow curved-surface body with a large upper end and a small lower end. The dedusting and defogging device is compact in structure, convenient to maintain, good in separation effect, small in flue gas resistance, low in operation cost and promising in application prospect.

Description

technical field [0001] The invention relates to the research field of flue gas dust removal, mist removal and purification treatment, in particular to a vortex radial acceleration dust removal and mist removal device. Background technique [0002] With the continuous improvement of environmental protection emission standards, the emission concentration limit of coal-fired boilers in thermal power plants in key areas in the "Emission Standards of Air Pollutants for Thermal Power Plants" has been set at 20mg / Nm 3 , especially in order to speed up the control of smog, various regions have successively put forward higher requirements for ultra-clean emissions from coal-fired boilers in thermal power plants, and the limit of smoke and dust emission concentration has reached 5mg / Nm 3 . [0003] After the bag filter, the dust emission value can be reduced to 30mg / Nm 3 In the following, although the limestone gypsum wet desulfurization process arranged after the dust collector has...

AI Technical Summary

Problems solved by technology

However, the patented dust and mist removal device only relies on the centrifugal force generated by the tangential movement of dust particles and mist droplets generated by the cyclone, which is not enough to achieve efficient separation of dust particles and mist droplets from the air flow; nor can it avoid dust particles and mist droplets Under the attraction of the low pressure in the center of the vortex, it gathers towards the center of the airflow and is entrained by the airflow; the fine dust particles and mist droplets rising with the surrounding airflow are finally mixed into the main airflow, which affects the purification effect of the flue gas, and can be further improved Improve

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