Wet dust remover

Abstract

This invention relates A wet dust remover, comprising a Venturi tube and a cylindrical washer, wherein the Venturi tube includes a convergent section, a throat section and a diffusion section, the sidewall of said throat section is provided with one or more through holes, the outer ends of the one or more through holes are connected to a pressure water pipe, the outer end of said diffusion section constitutes the outlet of the Venturi tube, the outer end of said convergent section constitutes the inlet of the Venturi tube, wherein the cylindrical washer includes a plurality of nozzles and a plurality of layers of dehydration wire meshes, the plurality of nozzles and the plurality of layers of dehydration wire meshes are placed in cross sections inside cylindrical washer. This wet dust remover feature less investment, high dust removing efficiency and relative long life, low water consumption and low operation costs and it can be mainly used in dusting applications for industrial dust and high concentration flue gas of all industrial furnaces and kilns.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a wet dust remover which is mainly used in dusting applications for industrial dusts and for high concentration flue gases of all industrial furnaces and kilns.[0003]2. Description of the Related Art[0004]At present, industrial dusting methods may be classified as dry dusting and wet dusting. The dry dusting mainly includes cloth-bag dusting technique and electric dusting technique; the wet dusting mainly includes spray tower, foam column, Venturi tube, and impact or self-excitation dusting technique and so on. Each technique has its own advantage and disadvantage, suitable for different usages. The main defects of dry dusting include large amount investment, high operation costs and large floor area; and the wet dusting is constricted by the dust properties, even if it is suitable for the dust condition, it shall pay more attention to the problems including dusting efficiency, service life and...

AI Technical Summary

Benefits of technology

[0015]The main operational principle and advantageous effects of this invention is as follow: the treated gas, flue gas, passes through the pipe from the convergent section end of Venturi tube into the tube, the flow rate of gas increases after passing the throat section due to the convergence of tube diameter and static negative pressure is established in the tube. The said high pressure water pipe is connected with the cleaning solution. Pump the cleaning solution into the throat section of Venturi tube with pump together with the negative effect; the gas involves the cleaning solution into the air flow for fully mixing up to let the dust in air into the cleaning solution; the air flow enters the cylindrical washer after getting out of the diffusion section where the cleaning solution water fog sprayed from the nozzles continuously collide with the air flow for further dusting; meanwhile the water fog in air flow collides with the wire net and attaches on it when passing through due to the decreased air flow speed in cylindrical washer, so that the dusts are removed. This invention has a high dusting efficiency due to its combination of the efficient Venturi tube with air-solution separation cylindrical washer; the high pressure water supply method is used in throat section of Venturi tube so that the defect of less cleaning solution of present techniques due to they only depend the negative pressure resulted from high pressure air flow is overcame and it ensures adequate solution air ratio, as a result it enhances the dusting efficiency. In addition, large amount of water enter the throat section due to the high pressure and a layer of water film forms on the sidewall of throat section, it well protects the sidewall of throat section which is severely worn and helps extending the service life.

of this invention is as follow: the treated gas, flue gas, passes through the pipe from the convergent section end of Venturi tube into the tube, the flow rate of gas increases after passing the throat section due to the convergence of tube diameter and static negative pressure is established in the tube. The said high pressure water pipe is connected with the cleaning solution. Pump the cleaning solution into the throat section of Venturi tube with pump together with the negative effect; the gas involves the cleaning solution into the air flow for fully mixing up to let the dust in air into the cleaning solution; the air flow enters the cylindrical washer after getting out of the diffusion section where the cleaning solution water fog sprayed from the nozzles continuously collide with the air flow for further dusting; meanwhile the water fog in air flow collides with the wire net and attaches on it when passing through due to the decreased air flow speed in cylindrical washer, so that the dusts are removed. This invention has a high dusting efficiency due to its combination of the efficient Venturi tube with air-solution separation cylindrical washer; the high pressure water supply method is used in throat section of Venturi tube so that the defect of less cleaning solution of present techniques due to they only depend the negative pressure resulted from high pressure air flow is overcame and it ensures adequate solution air ratio, as a result it enhances the dusting efficiency. In addition, large amount of water enter the throat section due to the high pressure and a layer of water film forms on the sidewall of throat section, it well protects the sidewall of throat section which is severely worn and helps extending the service life.

Problems solved by technology

The main defects of dry dusting include large amount investment, high operation costs and large floor area; and the wet dusting is constricted by the dust properties, even if it is suitable for the dust condition, it shall pay more attention to the problems including dusting efficiency, service life and water consumption.

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