SU1197743A1 - Dust trap - Google Patents

Abstract

A dust collector, comprising a housing, a tangential nozzle inlet, a discharge opening, an exhaust pipe, at the entrance to which a coil with refrigerant supply and exhaust connections is installed, which is equipped with a heater, placed in a dust collector, placed in a sump, equipped with a heater. the coils of the coil are spaced apart.

Description

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The invention relates to the purification of gas from solid and liquid contaminants and can be used in the mining, chemical, construction and other industries.

The aim of the invention is to increase the efficiency of dust collection.

The drawing shows a diagram of dust collector ..

The dust collector includes a housing 1, an inlet tangential nozzle 2, a discharge opening 3, an exhaust pipe A, at which a coil 5 is installed with an inlet pipe 6 and a discharge of 7 refrigerant. A coil is installed in the coil, which can be made in the form of an electric coil 8 wound on coils of coils that are spaced apart from each other.

Dust collector works as follows.

The refrigerant, entering inside the coil 5, creates negative temperatures on its outer surface. Due to thermal diffusion, wet water vapor sublimates on the outer surface of the coil and forms a layer in the form of crystalline snow. The air flow, polluted by dust particles, flows through pipe 2 into body 1 and forms the main vortex. The centrifugal forces resulting from the rapid rotation of the air flow due to its tangential entry, throw large particles toward the outer edges of the cyclone. Large coarse dust particles slide along the walls and fall through the hole: 3 into the storage bin.

Partially cleaned air flow, mainly from coarse dust, due to the pressure drop at the boundary of the main vortex changes the downward spiral movement to an upward movement, forming a central vortex that has the form of a spiral of a smaller radius than the main vortex. On the way of the central whirl filter is installed

the element of fine cleaning in the form of a serpentine. The diameter of the coil should not be larger than the diameter of the central vortex, because otherwise the coils of the coil will enter the zone of the main Vortex, the speed of which is greater than in the zone of the central vortex, and this can lead to the fact that the process of sublimated disruption ;; snow crystals from the coil will prevail over their formation rate.

The central stream cleared of coarse dust due to the ascending forces comes into contact with snow crystals, which, due to turbulent appearances, cover almost the entire space of the central vortex. The process of deposition of fine dust on the surface of snow crystals, which occurs mainly due to contact interaction, is enhanced by the component thermal diffusion force directed vertically downwards and by electrostatic forces arising due to the influence of electrical signs of snow crystals and dust particles.

Precipitated on snow crystals, fine dust under the action of gravitational forces is lowered into the bunker, and the air flow through the pipe 4 of the outlet goes to atmosphere. A part of the snow crystals, as they work, is disrupted by the central air flow, enters the zone of the main vortex, and interacts with larger dust particles, which also contributes to the effectiveness of dust collection. In the event that an ice layer of considerable thickness forms on the surface of an immature ice layer, it is periodically defrosted using a heater made, for example, in the form of a spiral 8, heating can also be carried out by passing hot air from a compressor, for example a drilling rig, through a coil. After the ice layer has been thawed, the water in the glass container additionally binds the dust accumulated in the bunker.

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Claims (1)

A dust collector comprising a housing, an inlet tangential nozzle, an unloading hole, an exhaust pipe, at the inlet of which there is a coil with inlets and outlets of a refrigerant, characterized in that, in order to increase dust collection efficiency, the dust collector is equipped with a heater located on the coil, while coil installed at a distance from each other. § £ > 1 1197743