SU1755881A1 - Gas-cleaning filter - Google Patents

Abstract

Use: cleaning of gases from aerosols of oils and acids. SUMMARY OF THE INVENTION: When gas is supplied, the partition rises upward under the action of gas pressure and compresses the spring. When the gas supply is cut off, the spring expands, moves the upper baffle down, compresses the porous elastic-elastic filtering material, and squeezes the trapped liquid. 2 of p f-ly, 4 ill.

Description

The invention relates to gas cleaning equipment and is intended to filter gas from aerosol impurities, for example, oils, water, acids, alkalis, and the like.

A known electrostatic precipitator for cleaning gas from oil aerosols, comprising a housing with inlet and outlet nozzles, a filter element connected to a power source, a drip tray and a nozzle for draining oil.

The disadvantage of the device is its relatively high fire hazard when cleaning gas from oils, which limits its use.

The closest known technical solution in its essence and the achieved effect is a filter for gas cleaning, including a housing With inlet and outlet nozzles, conical perforated partitions between which the filtering material and the sump for collecting liquid cleaning products are placed.

This known device provides fire safety, however, for the regeneration of the granular load used in this device, frequent periodic flushing of this load with washing liquid is required, which complicates the regeneration process, is associated with a considerable time for performing this operation and requires a large consumption of washing liquid.

The purpose of the invention is to increase the efficiency of regeneration.

The objective is achieved by the fact that in the inventive gas cleaning filter, including a housing with inlet outlet pipes, there are conical perforated partitions between which the filtering material and the sump for collecting liquid cleaning products are placed, according to the invention, the upper conical partition is installed with the possibility of vertical movement and fixed on the central rod, the lower part of which is rigidly fixed on the lower perforated partition, and the upper part interacts with

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the upper partition through the compression spring, moreover, the filter material is made of elastic-elastic.

It is advisable that the perforation holes of the conical partitions be made with flared, placed in their upper plane.

It is also advisable that the upper conic partition be made in the form of a louvered grille with the plates tilted towards the walls of the housing.

Installing the upper conical partition with the possibility of vertical movement, fastening it on the central rod, rigid mounting the lower part of the rod on the lower perforated partition, the interaction of the upper part of the rod with the upper partition through the compression spring, making the filter material elastically elastic allows the liquid to be released after the gas supply stops on filtering.

Perforation of the conical partitions with the flanges, placement of the flanges in the upper plane of the partitions allows organizing the oil flow along the upper plane of the partitions when releasing and reducing the re-contamination of the filtering material with liquid.

The implementation of the upper conical partition in the form of a louvered grille with the plates tilted towards the walls of the housing makes it possible to remove the squeezed liquid along the inclined part of the partition without re-entering its remnants deep into the filter material during its subsequent spraying.

Figure 1 shows the scheme of the claimed filter, a general view of the filtering moment; 2 - the same, the moment of regeneration by the release of the filtering material; fig.Z - node a in Fig. 2, when performing the upper partition with flared; figure 4 - the same. in the embodiment of the upper partition in the form of a louvered grille.

The filter includes a housing 1 with an inlet 2 and an outlet 3 with gas nozzles, the upper 4 and lower 5 conical perforated partitions, between which is placed a porous elastic-elastic filter material b and a tray 7 for collecting liquid cleaning products. The upper partition 4 is installed with the possibility of vertical movement and is fixed on the central rod 8. The lower part of the rod 8 is rigidly fixed on the lower perforated partition 5, and the upper one interacts with the upper partition 4 through a compression spring 9, the upper end of which

mounted on the rod 8, and the bottom rests on the movable partition 4.

It is advisable that the holes in the perforations of the conical partitions 4 and 5 be

made with flared 10, placed in their upper plane.

It is also advisable that the upper partition 4 be made in the form of louvres with the inclination of the plates 11 towards the side surface of the housing 1. It is advantageous

part of the inlet 2 is equipped with a swirler 12 and a reflective umbrella 13.

The pallet 7 is provided with a branch pipe 14 for removal

fluid. The upper part of the rod is equipped with

adjusting gank 15

The filter works as follows. The gas contaminated with the aerosol liquid is fed through the inlet 2, to

the output of which acquires a rotational motion, under the action of which the largest drops are separated onto the wall of the reflective umbrella 13 and flow into the tray 7, which has come out from under the reflective umbrella

13, the rotating gas stream undergoes additional centrifugal separation and is directed to the lower filter bed of material 6, where it is cleaned of aerosols of liquid, which coagulates into droplets,

Next, the gas passes the upper layer (Rus) of the filtering material 6. where it is additionally cleaned from the liquid and directed through the outlet 3 to the consumer.

With an ascending gas flow at the moment of its filtration due to its pressure on the upper perforated partitions 4 and the hydraulic resistance of these partitions, the latter are displaced upwards and

The springs 9 are compressed, and the filter material b is straightened out by its elasticity.

The hydraulic resistance of the upper partitions is calculated in such a way that under the pressure of the filtered air to provide compression of the springs 9.

After the filter material 6 is saturated with the coagulated liquid, its regeneration is released. For

it is enough to just stop the flow of gas through the pipe 2 for a short period of time. At the same time, due to the lack of pressure, the upper perforated partitions 4 under the action of the expanding springs 9

5 is displaced downward and compresses the filter material 6. The pressed fluid is squeezed onto the upper part of the upper partition 4 and flows down to the wall of the housing 1, and in the lower part of the pressed fluid crosses the perforation of the partition 5 and flows down to the lower upper partition 4 and is directed to the wall of the housing.

The fluid intersecting the lower partition 5 of the lower filter layer (Russ) flows directly into the tray 7. The presence of the deflector 13 prevents the DO from entering the inlet 2. When the gas supply through the outlet 2 of the partition 4 is resumed due to air pressure and compressed material 6 lift up and compress the springs 9.

In the case of perforation holes with a flange 10 in partitions 4 and 5 at the moment of squeezing, the liquid accumulates on the upper part of partitions 4 and 5 and flows to the wall of the housing. The flanges 10 prevent the liquid from flowing to the underlying channel of the filtering layer, and at the time of resuming the gas supply and expanding the filtering material, the screening 10 prevents the absorption of the failed residual liquid from the surface of the partitions 4, which improves the quality of pressing.

In the case of an upper conical partition 4 in the form of louvres with an inclination towards the walls of the housing, the suction of liquid residues from the upper partition 4 is avoided when the filtering material is straightened after pressing, which additionally improves the quality of the release.

The technical and economic efficiency of the proposed filter as compared with the prototype consists in reducing the time for regeneration of the filtering material by 2-3 times due to the possibility of squeezing this material by the energy of the filtered air accumulated in the springs and making the filtering material with elastic-evil properties.

In this case, due to the fact that the filtering material is periodically pressed, the flow rate of the washing liquid decreases by a factor of 3–4 due to the increase in the time between washing.

Claims (3)

Claim 1. Gas cleaning filter containing a vertical cylindrical body with inlet and outlet nozzles, filter elements fixed on the central rod, made of an elastic-elastic porous material enclosed between a movable upper and rigidly fixed lower conical partitions made with an opening mi, and a means for regeneration by pressing, characterized in that, in order to improve the quality of cleaning, the peripheral part of the filter elements is adjacent to the lateral surface These bodies, the inlet is placed under the lower filtering element, while the means for regeneration is made of coaxial cylindrical springs coaxially placed with the rod, the upper end of which is fixed to the rod, and the lower end abuts the movable curtain wall. 2. A filter according to claim 1, characterized in that the openings of the partitions are made with flanging placed in their upper plane. 3. A filter according to claim 1, characterized in that the upper partition is made in the form of louvres mounted inclined towards the side surface of the housing. 7 3 15 Fzg.1 J Ix l J f s v J IN Tv "Ji whose Node A FIG 4