RU2279905C1 - Packed scrubber - Google Patents

Abstract

FIELD: chemical industry; textile industry; food industry; light industry; other industries ; equipment of the wet dust separation.

SUBSTANCE: the invention is pertaining to the equipment of the wet dust separation and may be used in chemical, textile, food, light and other industries for purification of the dusty gases. The packed scrubber contains: the body with the fitting pipes for the dusty gas and the purified gas; the sprinkling device; the support gratings, between which there is the head; and the device for withdrawal of the slime. The head is made in the form of the hollow spheres, on the spherical surface of which there is the cut groove having in the cross-section perpendicular to the screw line the profile of "Berly saddle" or "Itallocks" saddle. The head can be made out of the porous polymeric materials, the glass, the porous rubber, the composite materials, timber, stainless steel, titanium alloys, precious metals. The technical result of the invention is the increased efficiency and reliability of the dust-catching process, and also reduction of the metal consumption and the vibroacoustic activity of the apparatus as a whole.

EFFECT: the invention ensures the increased efficiency and reliability of the dust-catching process, reduction of the metal consumption and the vibroacoustic activity of the apparatus as a whole.

3 cl, 4 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, cl. 01 D 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 nozzle scrubber, known from the book of A. A. Rusanov. A guide to dust and ash collection. M., - Energoatomizdat, - 1983, p. 97, Fig. 4.10, 4.11 and 4.12 (prototype), comprising a housing with nozzles for dusty and purified gas, an irrigation device, support grids, between which the nozzle is located, and a device for discharge 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, as well as a decrease in the metal consumption and vibro-acoustic activity of the apparatus in a chain.

This is achieved by the fact that in a nozzle scrubber containing a housing with nozzles for dusty and purified gas, an irrigation device, support grids between which the nozzle is located, and a device for removing sludge, the nozzle is made in the form of hollow balls on which a helical groove is cut on a spherical surface or in the form of cylindrical rings, on the lateral surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle, or in the form of toroidal rings EC, and the nozzle is made of porous polymeric materials, glass, porous rubber, composite materials, wood, stainless steel, titanium alloys, precious metals.

Figure 1 shows a nozzle scrubber with transverse irrigation, figure 2 shows a counterflow nozzle scrubber, figure 3 - nozzle in the form of hollow balls, on the spherical surface of which a helical groove is cut, figure 4 - nozzle in the form of cylindrical rings, on the lateral surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle.

The nozzle scrubber comprises a housing 1 with nozzles 2 and 3 for dusty and purified gas, an irrigation device 6, support grids 4 between which the nozzle 5 is located, and a device 7 for removing sludge (FIGS. 1 and 2). The nozzle 5 is made in the form of hollow balls, on a spherical surface of which a helical groove is cut (Fig. 3).

The nozzle can be made in the form of hollow balls, on a spherical surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle (Figs. 3 and 4). The nozzle can be made in the form of cylindrical rings, on the side surface of which a helical groove is cut (Fig. 4). The nozzle can be made in the form of cylindrical rings, on the side surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle (Fig. 4). The nozzle can be made in the form of toroidal rings (not shown in the drawing). The nozzle can be made in the form of toroidal rings having a profile such as a Berl saddle or Itallox saddle (not shown in the drawing). The nozzle 5 is made of porous polymeric materials, glass, porous rubber, composite materials, wood, stainless steel, titanium alloys, precious metals.

A nozzle scrubber operates as follows.

The dusty gas stream enters the housing 1 through the inlet of the dusty gas stream 2 and meets a curtain from the nozzle 5, which is wetted with water or other absorbent from the irrigation device 6. The flow of irrigation fluid in countercurrent nozzle scrubbers is accepted in the range from 1.3 to 2 6 l / m ³ . In nozzle scrubbers with transverse irrigation for better wetting of the surface of the nozzle, the 5th layer of the nozzle is inclined by 7 ... 10 ° in the direction of the gas flow. The flow rate of irrigation fluid in them is taken in the range from 0.15 to 0.5 l / m ³ . The dust collection process proceeds in the optimal hydrodynamic mode, since the hydraulic resistance of the nozzle 5 is 20% less than the hydraulic resistance of the outlet pipe 3 of the purified gas. To reduce the vibro-acoustic activity of the apparatus and its metal consumption, as well as to increase its reliability, the proposed device provides the following measures: a layer of soft vibration-damping material, for example, VD-17 mastic, is applied to the surface of the parts, and the ratio between the thickness of the metal and the vibration-damping coating is in the optimal range of values: 1 / (2.5 ... 4). To remove sludge, a device 7 is used to remove sludge in the form of a channel in the bottom of the housing or a separate mechanism.

The nozzle scrubber can be used to clean fine dust and humidify air in ventilation units and air conditioning units, as well as in trapping fogs, readily soluble dust, as well as in the process of dust collection, gas cooling and absorption of nozzle scrubbers. The effectiveness of the proposed design of the nozzle scrubber increases due to the larger interaction surface of the nozzle in the above processes and when collecting dust particles larger than 2 μm in size is about 95%.

Claims (3)

1. A nozzle scrubber comprising a housing with nozzles for dusty and purified gas, an irrigation device, support grids between which the nozzle is located, and a device for removing sludge, characterized in that the nozzle is made in the form of hollow balls, on the spherical surface of which a helical groove is cut . 2. The nozzle scrubber according to claim 1, characterized in that the nozzle is made in the form of hollow balls, on a spherical surface of which a helical groove is cut, having in cross section perpendicular to the helix a profile such as a Berl saddle or Itallox saddle. 3. The nozzle scrubber according to claim 1, characterized in that the nozzle is made of porous polymeric materials, glass, porous rubber, composite materials, wood, stainless steel, titanium alloys, precious metals.

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