Improved multistage dual cyclone dust and mist eliminator

Abstract

Belonging to the technical field of flue gas purification, the invention in particular relates to an improved multistage dual cyclone dust and mist eliminator, which includes a plurality of dual cyclone devices. Each dual cyclone device comprises an inner cyclone cylinder, the inner cyclone cylinder is internally provided with a blind cylinder, the blind cylinder is internally provided with a flushing water pipe, the inner cyclone cylinder is externally provided with outer cyclone blades, the blind cylinder is externally provided with inner cyclone blades, the plurality of dual cyclone devices are multistage dual cyclone devices connected in series vertically, the inner surface of the outer cyclone cylinder is provided with first mist drop escape proof devices over each dual cyclone device, and the upper part of the inner cyclone cylinder inner surface is equipped with a second mist drop escape proof device. The first mist drop escape proof devices and the second mist drop escape proof device are all in the shape of a conical ring with big top and small bottom. The conical ring shaped mist drop escape proof devices are convenient for formation of liquid films in the cyclone cylinders, thus reducing mist drop escape and improving the dust removal effect.

Description

technical field [0001] The invention belongs to the technical field of flue gas purification, and in particular relates to an improved multi-stage double-cyclone dust and mist eliminator. Background technique [0002] Chinese Patent No. 201520197916.0 discloses a multi-stage double-cyclone demister and dust collector and a desulfurization absorption tower containing a multi-stage double-cyclone demist and dust collector. The main principle is: using the kinetic energy of the flue gas in the absorption tower, when the flue gas passes through the cyclone, a gas-liquid collision occurs between the blades of the cyclone and the wall of the cyclone cylinder to make the fine liquid droplets, fine dust particles, aerosols, etc. in the flue gas The tiny particles collide with each other and agglomerate to form large droplets, which are then captured by the liquid film on the surface of the cyclone to achieve the purification purpose of removing tiny particles. In practical engineer...

AI Technical Summary

Problems solved by technology

In practical engineering applications, due to the open structure of the last stage cyclone, the mist droplets adsorbed on the surface of the cyclone will partly escape the cyclone and enter the flue gas driven by the rotating flue gas in the cyclone, resulting in a decline in the dust removal effect

Images