Plate-type demister for improving demisting efficiency of small-particle-size droplets

Abstract

The invention discloses a plate-type demister for improving the demisting efficiency of small-particle-size droplets. The plate-type demister comprises a shell, and an upper demisting unit and a lower demisting unit, which are arranged in the shell; each demisting unit comprises a first separation plate and a second separation plate, the first separation plate and the second separation plate are alternately distributed, the first separation plate is provided with a first notch and a first guide plate, the second separation plate is provided with a second notch and a second guide plate, and the first notch and the second notch are arranged in a staggering manner; the first guide plate is folded towards the left side of the first separation plate, the second guide plate is folded towards the right side of the second separation plate; the bottom end of the first separation plate in the upper demisting unit is fixedly connected to the top end of the second separation plate in the lower demisting unit, the bottom end of the second separation plate in the upper demisting unit is fixedly connected to the top end of the first separation plate in the lower demisting unit, and airflow passages which are communicated with each other in the vertical direction are formed in the upper demisting unit and the lower demisting unit. By adopting the plate-type demister, the demisting effect of the small-particle-size droplets can be improved.

Description

technical field [0001] The invention relates to a mist removal device, in particular to a plate type mist eliminator for improving the mist removal efficiency of small particle size mist droplets, which can realize the separation of mist droplets and gases. Background technique [0002] In the fields of energy, environmental protection, chemical industry, pharmaceuticals, food processing, etc., there are occasions where a large number of airflows contain fog droplets and need to be removed from the airflow. This process is called demisting. For example, in the wet desulfurization process of a thermal power station, the gypsum slurry sprayed downward from the top of the tower and the sulfur-containing flue gas from the bottom of the tower form a reverse convection in the desulfurization tower, so that the flue gas is mixed with a large number of mist droplets during the desulfurization process, which must be demisted. Only after removing the fog droplets in the flue gas can t...

AI Technical Summary

Problems solved by technology

This defogging method has a high defogging efficiency (close to 90%) for large particle diameter (such as d>30μm) droplets, but the efficiency of fine fog droplets drops sharply, such as for droplets with a diameter of 20μm. Fog efficiency less than 40%

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