CS250074B1 - Equipment for wet dust removal from air - Google Patents

Abstract

The device is used to separate dust from air, especially in industry. It consists of a container of mostly rotary shape with a tangential air supply. In the middle, above each other, there are central radial sprayers with a tangential liquid supply, powered by a circulation circuit, which creates continuous liquid membranes and, by reflection from the walls, a liquid mist, by which the dust in the air is wetted and thrown onto the walls of the container by the centrifugal force of the rotating air, where its bulk settles. The air leaves through a central labyrinth exhaust with a cover, where the rest of the mist droplets are separated from the air, which leaves into the open space or is discharged through a pipe. The device can be used in all fields where it is necessary to remove dust from the outgoing air, from small to large capacities.

Description

BACKGROUND OF THE INVENTION The invention relates to a device for wet separation of dust from air.

Until now, in wet dust separators with tangential air inlet with dust into the vessel, the liquid has been sprayed with nozzles located in the center of the vessel in a radial direction. After passing through the vessel, the air was discharged through a central exhaust to the duct.

A disadvantage of these wet scrubbers is the passage of a portion of the air mass mostly with the smallest particles of dust between the individual conical fluid streams through the central part of the vessel without wetting and thus dust separation. Due to the relatively small nozzle diameters, they are clogged by the separated impurities entrained in the liquid circuit, thereby reducing the separation efficiency.

Direct discharge of cleaned air into the pipeline causes small droplets of liquid into the pipeline, which increases the consumption of liquid and leads to increased corrosion of the pipeline. A direct outlet of eg air into a closed room is practically eliminated. These drawbacks are addressed both by increasing the size of the separator vessel and by incorporating various devices and control systems, which increase the cost and operation costs of the separators.

The above mentioned drawbacks are eliminated by the wet dust separator according to the invention, which is characterized in that the liquid sprayers are central, radial and tangential inlet and are connected one above the other in the liquid circulation circuit in the center of the vessel. The vessel is equipped with a central labyrinth exhaust with a lid.

The main advantages of the wet air separator according to the invention are that the rotating air must pass through continuous horizontal liquid membranes formed by central radial sprinklers. These membranes break into a tiny nebula upon impact on the vessel walls, filling the space between the membranes and preventing the formation of air bubbles. The effluent passes through a central labyrinth exhaust where, as a result of a change in the flow direction at the edges and walls, the remains of a liquid nebula flow back to the bottom of the vessel. In the case of air purification, it can be led back to the working area. The simple design allows good access to remove the settled dust parts after removing the central labyrinth exhaust and the hatch. The device operates with low sensitivity to fluctuations in the amount of air passing through the dust. This also results in low operating and maintenance costs.

In the drawing, FIG. 1 shows a vertical section through an exemplary embodiment of a wet dust separator according to the invention; and FIG. 2 shows a horizontal section at the point of supply of air with dust to the container.

1 and 2 is formed by a vessel 1 into which the air inlet 10 is tangentially connected with dust in its lower part and which is covered in the upper part by a central labyrinth air outlet 2 and a lid 3. Circulation circuit The liquid 7 is formed by a circulation pump 4 and a discharge line 5, by means of which the central radial sprinklers S with a tangential inlet are arranged one above the other in the central part of the vessel 1. The dust air is fed into the vessel 1 through the suction through the duct 8 through the fan 9.

The device for wet separation of airborne dust according to Figs. 1 and 2 is intended especially in the dust particle separation industry. The air with dust is fed into a container 1 in a generally rotational shape, in the center of which the central radial sprinklers 6 are arranged one above the other, forming in several layers liquid membranes which break into the nebula by impacting the walls. They wet the dust particles and by centrifugal action they deposit on the wall of the container, from where they are tipped, scraped or washed away at longer intervals according to the size of the separator and the characteristics of the dust collected.

Claims (2)

pThe subject A device for wet dust separation from air, comprising a vessel into which a tangential air inlet opens at the bottom, fluid sprayers connected to a fluid circulation circuit, further comprising a circulation pump and a discharge line, characterized in that the spray of the bag (6) the fluids are central, radial and tangential inlet and are connected to the fluid circulation circuit (7 J) one above the other in the center of the vessel (1). Device according to claim 1, characterized in that the container (1) is provided with a central labyrinth exhaust (2) with a cover (3). 1 sheet of drawings