RU2522655C1 - Conical jet scrubber - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: conical jet scrubber comprises a casing with branch pipes for dust-laden and purified gas, a nozzle spraying device, support and limiting trays with a packed bed in between, a liquid trap made as the packed bed layer placed between the support and limiting trays, and a sludge removing device; the support trays are made resilient, and the packed bed placed above the lower support tray is made from resilient materials, a vibrator is set on the lower support tray, the packed bed is made as a cylindrical ring with two hemispherical surfaces being attached to its side surface opposite to each other so that diametral planes of the hemispheres coincide with the upper and lower bases of the cylindrical ring respectively, and the apices of the hemispherical surfaces are set on the ring axis and are turned to each other.

EFFECT: higher efficiency and reliability of dust separation.

2 cl, 2 dwg

Description

The invention relates to techniques for wet dust collection and can be used in chemical, textile, food, light and other industries for the purification of dusty gases.

A known apparatus for wet cleaning of dusty air by AS USSR No. 1711952, class B01D 47/06 of 05/14/90, comprising a housing, a water sprinkler, a gas stream inlet, a clean gas outlet pipe and a sludge outlet device.

Its disadvantage is the relatively low efficiency of the dust collection process, as well as the complicated design.

The closest technical solution to the claimed object is a scrubber, known from the book of A.A. Rusanova. A guide to dust and ash collection. -M.: Energoatomizdat, - 1983, p. 106, Fig. 4.24a (prototype), comprising a housing with nozzles for dusty and purified gas, a nozzle irrigation device, support and restriction plates, between which there is a nozzle, a spray catcher and a device for removal of sludge.

The disadvantage of the prototype is the relatively low efficiency of the dust collection process due to the underdeveloped surface of the nozzle.

The technical result is an increase in the efficiency and reliability of the dust collection process.

This is achieved by the fact that in a conical nozzle scrubber containing a housing with nozzles for dusty and purified gas, a nozzle irrigation device, support and restriction plates, between which there is a nozzle, a spray trap made in the form of a nozzle layer placed between the support and restriction plates, and a device for discharging sludge, the support plates being made elastic and the nozzle placed above the lower supporting plate made of elastic materials, and a vi mounted on the lower supporting plate the radiator, the nozzle is made in the form of a cylindrical ring, on which two hemispherical surfaces are attached opposite to each other, so that the diametrical planes of the hemispheres coincide with the upper and lower bases of the cylindrical ring, and the vertices of the hemispherical surfaces are on the axis of the ring and are directed towards each other.

Figure 1 shows a conical nozzle scrubber with a movable nozzle, figure 2 - nozzle in the form of cylindrical rings.

A conical nozzle scrubber with a movable nozzle comprises a housing consisting of a cylindrical part 1, a conical part 2, the lower part of which is connected to a cylindrical part 3 and a conical sludge collector 4 with nozzles for dusty and purified gas, respectively. The irrigation device 7 is made in the form of an acoustic nozzle mounted in the center of the housing. On the lower support plate 8 is a layer of nozzle 9. The spray catcher is made in the form of a layer of nozzle 9, located between the support 5 and restrictive 6 plates (figure 1). The lower 5 and 8 support plates and nozzle 9 are made of elastic materials. The nozzle 9, placed above the lower support plate, is made of elastic materials, for example, in the form of plastic balls.

A vibrator (not shown) may be mounted on the lower support plate 8.

In order to increase the degree of dust cleaning of the gas stream by increasing the contact area of the dusty stream with the nozzle 9 (FIG. 2), the nozzle element is made in the form of a cylindrical ring, to which two hemispherical surfaces 11 and 12 are attached oppositely to each other so that that the diametrical planes of the hemispheres coincide with the upper 13 and lower 14 bases of the cylindrical ring, respectively, and the vertices of the hemispherical surfaces are on the axis of the ring and are directed towards each other.

It is possible to perform nozzles with perforations 15 both on the side surface 10 and on the hemispherical surfaces 11 and 12.

The nozzle 9 can be made of porous polymeric materials, glass, porous rubber, composite materials, wood, stainless steel, titanium alloys, precious metals.

Conical nozzle scrubber with a movable nozzle operates as follows.

The dusty gas stream enters the housing 1 through the inlet of the dusty gas stream and meets a curtain from the nozzle 9, which is wetted with water or other absorbent from the irrigation device 7. To remove the sludge, a device 4 is used to remove sludge in the form of a channel in the bottom of the housing or mechanism. To ensure free movement of the nozzle 9 in the gas-liquid mixture, its density should not exceed the density of the liquid. The process of dust collection takes place in the optimal hydrodynamic regime of a gas scrubber, characterized by a regime of fully developed fluidization. To intensify the hydrodynamic regime, a vibrator (not shown) can be installed on the lower support plate 8. This will allow the scrubber to switch to the vibro-fluidized bed mode, in which the efficiency of the interaction of the nozzle 9, irrigated by the liquid, with the gas phase will increase, and therefore, will increase the overall efficiency of the apparatus. The implementation of the nozzle 9, the bottom 8 of the support plate of elastic material will allow under certain conditions to create a mode of oscillation or self-oscillation, which will also increase the efficiency of interaction of the nozzle 9 with the irrigated liquid.

The scrubber can be used to clean fine dust and humidify air in ventilation units and air conditioning units, as well as in trapping mists, readily soluble dust, as well as in the process of dust collection, gas cooling and absorption of packed gas washers. The effectiveness of the proposed design of the nozzle scrubber increases due to the larger interaction surface of the nozzle in the above processes, as well as the optimization of the hydrodynamic situation and amounts to about 97% when collecting dust particles larger than 2 microns in size.

Claims (2)

1. A conical nozzle scrubber comprising a housing with nozzles for dusty and purified gas, a nozzle irrigation device, support and restriction plates, between which a nozzle is located, a spray catcher made in the form of a nozzle layer placed between the support and restriction plates, and a device for removing sludge moreover, the supporting plates are made elastic, and the nozzle placed above the lower supporting plate is made of elastic materials, and a vibrator is installed on the lower supporting plate, characterized in the nozzle is formed as a cylindrical ring, the side surface which is opposite to each other are attached two hemispherical surface in such a way that the diametrical hemispheres planes coincide respectively with the upper and lower bases of a cylindrical ring, and the vertex hemispherical surfaces are located on the axis of the ring and are directed towards each other. 2. The conical nozzle scrubber according to claim 1, characterized in that the nozzle is made with perforation both on the side surface and on hemispherical surfaces.

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