SU1500349A1 - Centrifugal wet-type dust collector - Google Patents

Abstract

The invention relates to gas cleaning equipment and improves dust collection efficiency. The dust collector comprises a housing with a venturi tube consisting of a confuser, a neck 6 with a spiral 7 and a ring-shaped container 11 and a diffuser. Dust gas enters the confuser, twists coil 7, ejects fluid that is sucked through hole 13, cavity of tank 11, hole 12, spiral cavity 10 and holes 9 of the back wall of the helix. When this occurs, intense spraying and mixing of the gas-liquid phase with the formation of foam and wetting of dust. Next, the gas-liquid mixture passes through a diffuser, where the liquid separates on its walls, collides with a drip-drop separator, where further separation takes place, the purified gas enters the gas outlet nozzle. 1 hp ff, 3 ill.

Description

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3 1500 The invention relates to devices for testing gas cleaning processes, in particular dust collection, and can be used in various industries.

The purpose of the invention is to increase the cleaning efficiency due to the intensification of phase exchange.

FIG. 1 schematically shows a dust collector, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 2

The centrifugal wet dust collector includes a housing 1 with a Venturi tube 2, a drip drop 3 and a gas outlet pipe 4. (FIG. 1) “The housing 1 is partially filled with liquid. The Venturi pipe 2 is located inside the housing 1 and consists of a confuser 5, a horizontally positioned neck 6 with a swirl in the form of a spiral 7 and a diffuser, 8. The neck 6 is partially immersed in a liquid. The spiral 7 is fastened inside the neck 6 and is provided with openings 9 in its tin wall on the side opposite to the flow direction (Fig. 3). The cavity 10 of the helix 7 communicates with the annular container 11 coaxially hardened on the mouth of the die 6 through the holes 12 (FIG. 3). The container 11 is provided in the lower part with an aperture 13 for intake to the liquid. The lower part of the housing 1 is provided with a nozzle 14 for removing sludge. It is advisable that the diameter of the holes 9 in the back wall of the helix 7 be taken variable and increase from bottom to top (Fig. 3).

Centrifugal wet trash works as follows.

The dust-gas flow is directed to the confuser 5. As the flow moves along the confuser 5, its velocity increases. In the throat 6, the gas and dust flow is swirled by the helix 7. As a result of an increase in the flow velocity in the throat 6, a vacuum is formed. A further increase in vacuum is formed in the back side of the wall of the helix 7 due to the breakdown of the vortices from the edges of the helix 7. Under the influence of increased vacuum, the liquid through the holes 13, the cavity of the container 11, the hole 12 and the hole 9 of the cavity 10 (FIG. 3) in the gas flow, wetting the gas flow throughout its cross section. Twisting the flow with the spiral 7 leads to an intense vortex

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formation, which increases the surface and the renewal of the contact surface of the phases (Fig. 2). When a gas interacts with a liquid, foaming occurs and active trapping of dust on the surface of its puffs. The thickness of the foam layer depends on the gas flow, the diameter of the neck and the size of the spiral. The treated gas and dust flow with dispersed liquid enters the diffuser 8, where the interaction of solid particles that are not caught in the foam layer with liquid drops and their separation into the walls of the diffuser due to the energy of the swirling flow continues. The separated liquid droplets with solid particles form a twisted film moving upwards along the inner surface of the diffuser. At the exit from the diffuser, a liquid film is withdrawn by means of a drip separator 3 to the lower part of the housing 1. The cleaned gas is directed through the pipe 4 to the consumer.

8cw with the fact that the diameter of the holes

9 in the back wall of the helix is variable and increases from the bottom up, the liquid is ejected evenly over the entire throat height, which increases the uniformity of the gas and improves the wetting conditions of the dust.

Improving the efficiency of gas cleaning from dust due to an increase in the intensity of phase exchange is achieved by using a hollow helix, which allows simultaneous swirling of the flow and create zones of increased vacuum, into which the ejected liquid is injected, as well as by installing a ring-shaped container that allows the liquid to flow and eject throat height. ..

Claims (2)

1. A centrifugal wet dust collector comprising a body filled with a liquid, inside which is placed a Bentu1 pipe and consisting of a confuser, a horizontal neck with a swirler partially immersed in the liquid, and a diffuser, a drip tray, a gas outlet pipe, characterized in that In order to increase the cleaning efficiency due to the intensification of the hydrodynamic regime, it is equipped with a ring-shaped capacitance placed coaxially to the throat and wired with a hole in the bottom wall; e reinforced within the hollow neck spiral with openings in its wall typnoy at This cavity of the spiral is communicated with the cavity of the annular container. 2. A foam trap according to claim 1, characterized in that the holes are large with a diameter increasing upward along the turn of the helix. gjue.1