RU2239487C1 - Device for wet purification of gases - Google Patents

Abstract

FIELD: wet purification of gases from impurities in different industries.

SUBSTANCE: the invention presents a device, that is dealt with the field of wet purification of gases from fine- dispersed solid particles and harmful gaseous impurities and may be used in different industries. A problem of the offered invention is an increase of productivity and quality of purification of gases from solid and gaseous harmful impurities. The device for wet purification of gases consists of an inlet branch-pipe (1) of the body, the upper part of which is made in the form of a spiral snail (2) linked by a transitional conical contraction (3) with a cylindrical part (4) and its lower part (5)made in the form of a truncated cone with a slime discharge hole (6), the hearth, under which there is a slime collector (7) with a branch-pipe (8). In the spiral snail (2) there are three sprinklers made in the form of pairs of nozzles installed at an angle of 25°- 90° to each other in parallel to the axis of a direct section of the snail (2)and even and odd nozzles are installed on pipelines (14) and (15). Two sprinkles are located on the opposite lateral sides in the beginning of the direct section of the snail (2), and the third sprinkler -on the outer lateral side at the end of the direct section of the snail. The technical result provides, that the offered device allows to perform a fine purification of gases from fine-dispersed solid particles of the dust and harmful gaseous impurities with prevention of drops drag-out with efficiency of 99 %.

EFFECT: the invention allows to perform a fine purification of gases from a dust and the harmful gaseous impurities preventing drops drag-out by 99%.

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Description

The invention relates to apparatus for wet purification of gases from fine particulate matter and harmful gaseous impurities in various industries.

A device for wet cleaning of gases, consisting of a cylindrical body with a spiral nozzle formed by a corrugated spiral channel for the passage of gas and liquid, a tangential inlet pipe for introducing cleaned gas, in which there is a device for spraying liquid in the form of nozzles installed in the inlet pipe for gas , a downward spiral plate, a pipe for the outlet of purified gas, a pipe for the exit of sludge, the collector and the cover of the device / 1 /.

A disadvantage of the known device is the low quality of gas purification from solid and gaseous impurities.

In the known construction, the device for spraying liquid in the form of nozzles does not provide effective fine dispersion of the liquid in the stream of gas to be cleaned, in addition, nozzles are overgrown with dust and dust deposits during fluctuations in gas flow rates.

The task of the invention is to increase the productivity and quality of gas purification from solid and gaseous harmful impurities.

This object is achieved in that in a device for wet cleaning of gases, including a housing with a cover, inlet and outlet nozzles for gas, a nozzle for the exit of sludge, a collection of sludge, a device for spraying liquid, the new thing is that the upper part of the housing is made in the form of a spiral snails connected by a transitional conical confuser to the cylindrical part of the body, made in the lower part in the form of a truncated cone with a sludge outlet, under which a sludge collector is installed, and a device for spraying liquid - of three sprinklers, each of which is made in the form of pairs of nozzles from one to ten, installed at an angle of 25-90 ° to each other and parallel to the axis of the straight section of the cochlea, and even and odd nozzles are placed on separate pipelines, while two sprinklers are located on the sides at the beginning of the straight section of the cochlea is symmetrical to each other, and the third is on the outside side at the end of the straight section of the cochlea, the outlet cylindrical gas pipe is located along the body axis at 1 / 2-4 / 5 of its height and is mounted on the lid.

The implementation of the lower part of the conical shape of the housing allows to increase the efficiency of centrifugal separation of liquid and gas phases, since the rotation speed of the dust-gas mixture inside the device’s body is inversely proportional to the radius of rotation, and the centrifugal force pressing the liquid droplets to the inner surface of the housing is

,

,

where m is the mass of liquid droplets;

V is the rotation speed of the liquid droplets;

R is the radius of rotation of the liquid droplets.

The spiral inlet snail provides an increase in the time of interaction of the atomized liquid with the gas and dust stream.

The implementation of the device for spraying liquid in the form of three sprinklers, each of which represents a pair of nozzles mounted at an angle of 25-90 ° to each other and parallel to the axis of the straight section of the cochlea, and even and odd nozzles on separate pipelines and the location of two sprinklers on the sides on the straight section of the cochlea, and the third - at the end of the straight section of the cochlea allows you to evenly and efficiently process the dust and gas stream with a sprayed liquid.

Figure 1 schematically shows a General view of a device for wet cleaning of gases:

figure 2 is a top view And a device for wet gas purification;

figure 3 is a diagram of the sprinklers of a device for wet gas purification;

figure 4 is a top view B of the sprinkler of the device for wet gas purification.

A device for wet cleaning of gases consists of an inlet pipe 1 of the housing, the upper part of which is made in the form of a spiral scroll 2 connected by a transitional conical confuser 3 with a cylindrical part 4 and the lower part 5 in the form of a truncated cone with a slag outlet 6, under which a sludge collector 7 is installed with pipe 8.

In spiral scroll 2, sprinklers 9, 10, 11 are installed, made in the form of pairs of nozzles 12, 13 installed at an angle of 25-90 ° to each other, parallel to the axis of the straight section of the scroll 2, even 12 and odd 13 nozzles are installed on pipelines 14, fifteen.

Sprinklers 9 and 10 are located on opposite sides at the beginning of the straight section of the cochlea 2, and sprinklers 11 are located on the outer side at the end of the straight section of the cochlea.

The device operates as follows.

The gases to be cleaned are fed through the inlet pipe 1 to the spiral scroll 2. In the straight section of the spiral scroll 2, the gases are treated with the liquid sprayed by the sprinklers 9, 10, 11. The sprinklers 9 and 10 process the gases at the beginning of the straight section of the scroll 2, and the sprinkler 11 at the end direct portion of the cochlea 2. Spraying the liquid into the gas stream occurs due to the oncoming-impact, at an angle of 25-90 ° interaction of the jets of liquid flowing from even 12 and odd 13 nozzles of irrigators 9, 10, 11.

As a result of spraying the liquid into the gas stream, a dust-gas mixture is formed.

The gas mixture with suspended solid dust particles and liquid droplets, a spiral scroll 2 through the transition conical confuser 3 is introduced into the cylindrical part 4 of the housing.

The flow of the mixture in the form of a rotating downward spiral is directed along the cylindrical 4 and then down the conical part 5 of the body to the sludge outlet 6.

Heat and mass transfer processes, centrifugal separation of the gas mixture occur in spiral scroll 2, in the cylindrical 4 and conical 5 parts of the body, as a result of which harmful gases are absorbed by liquid droplets, dust particles are deposited on the liquid droplets, and centrifugal forces compress liquid droplets with trapped gases and particles dust to the inner surface of the wall of the spiral scroll 2, cylindrical 4 and conical 5 parts of the body.

As a result, the gases are cleaned of dust and harmful gas components, and liquid droplets form a rotating downward liquid film on the wall surface, which in the form of sludge flows through the sludge outlet 6 of the conical part 5 of the body into the sludge collector 7 and the sludge is removed through the nozzle 8. The purified gases are removed in the form of a rotating ascending spiral through the outlet cylindrical pipe 16.

The positive effect of the gas purification device is that the proposed device allows for deep wet cleaning of gases from fine particulate dust particles, harmful gaseous impurities with the prevention of droplet drop with an efficiency of 99%.

Claims (1)

A device for wet cleaning of gases, comprising a housing with a cover, gas inlet and outlet pipes, a sludge outlet pipe, a sludge collector, a liquid spraying device, characterized in that the upper part of the body is made in the form of a spiral snail connected by a transitional conical confuser to a cylindrical part of the body, made in the lower part in the form of a truncated cone with a sludge outlet, under which a sludge collector with a nozzle is installed, and a device for spraying liquid - in the form of three sprinklers, each of which are made in the form of pairs of nozzles from one to ten installed at an angle of 25 ÷ 90 ° to each other, parallel to the axis of the straight section of the cochlea, even and odd nozzles are installed on separate pipelines, while two sprinklers are located symmetrically on the sides of the beginning of the straight section of the cochlea each other, and the third - at the end of the straight section of the cochlea, and the outlet cylindrical gas pipe is located along the body axis at 1 / 2-4 / 5 of its height and is mounted on the lid.

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