SU1680277A1 - Apparatus for wet cleaning of gases - Google Patents

Description

The invention relates to equipment for wet gas purification from various impurities and is intended for use in all industries, in particular in foundry,

The purpose of the invention is to increase the efficiency of gas purification.

Figure 1 shows the device, a General view; figure 2 - node I in figure 1; in Fig.3 node II in Fig.1; figure 4 is a view a in fig.Z.

The device comprises a housing 1, divided by a profiled baffle 2 into an inlet chamber 3 filled in the lower part of the liquid, a mixing chamber 4 and a gas outlet chamber 5. In the chamber 3, a dividing partition 6 with teeth 7 at the lower end is made so that the tips of the teeth are below the liquid level in the chamber 3, and the hollows between the teeth are at or above the liquid level. Between the partitions 6 and 2, a confeore channel 8 is formed, under the partition 6, a diffuser channel 9.

To maintain a constant liquid level in the chamber 3, fittings 10 and 11 are installed for filling and draining, respectively. At the outlet of mixing chamber 4, a guide plate 12 is mounted. At the bottom of chamber 3, a device is mounted to remove trapped dust from it in the form of sludge (not shown).

The mixing chamber 4 has a channel 13 expanding along the gas flow, formed by an internal inclined wall 14 and an external vertical wall 15 of the casing, smoothly passing into the wall of the cyclone-type separator 16. In the lower part of the chamber 4, on the wall 14, an elastic resonator plate 17 is fixed along the gas flow, overlapping 1 / 4-1 / 2 of the passage section of the channel 13 and forming a confuior section with the wall 15. In the lower quarter of the cyclone separator, an arcuate plate 18 is rigidly fixed to the end of the internal partition 18. Moreover, the upper edge of the plate 18 smoothly mates with the partition, and the lower edge of the plate has a gap with the partition. The input of contaminated gas is carried out through the inlet pipe 19. Dust and water collected in the lower part of the chamber 20 of the cyclone separator enter the chamber 3 through the pipe 21. At the entrance to the channel 13 between the plate 12 and the wall 14, a diffuser section 22 is formed.

The device operates as follows.

The contaminated gas stream is introduced through the pipe 19 into the chamber 3, in which it is divided by a partition 6 into two streams. The upper stream in the confuser channel 8 is accelerated, due to which, in the zone of the teeth 7 of the partition 6, the gas pressure in the stream decreases. The lower stream in the diffuser channel 9 loses its speed, the pressure in it rises. It develops active turbulent vortices, providing mixing of the surface layer of the liquid in the chamber 3. Larger solid particles pass from gas to liquid. Small inclusions together with liquid particles are carried out by gas to the guide plate 12, passing through the cavities between the teeth of the plate 6 and under it. At this moment, they are picked up by the accelerated gas flow passing through the confueor channel 8.

The gas stream with foam and liquid drops by the plate 12 is directed into the channel 13. In this case, the gas stream passes through the diffuser section 22, in which it is turbulent, breaking the drops of the trapped liquid. With further movement, the flow accelerates, passing the confuore section formed by the plate 17 and the wall 15 of the housing 1. After narrowing, the flow falls into a sudden expansion, its speed drops sharply, the pressure rises. The elastic plate under the changing pressure difference receives vibrations, intensifying the process of droplet crushing produced by turbulent vortices in the region of sudden expansion.

With the further movement of the gas stream with fine particles of liquid, there is an intensive trapping of small inclusions from the gas by the liquid, which gradually settles on the walls of the smoothly expanding channel 13 and moves in the form of a film in the direction of flow. When a film of liquid moving along the wall 14 hits the arcuate plate 18, the film reaches its lower edge and breaks down. Caught up by the gas moving along the way, the liquid enters the separator chamber 20, at the bottom of which it is connected to the liquid moving along the wall 15, and flows through the nozzle 21 together with the captured dust in the form of sludge into the chamber 3.

The use of the invention allows to reduce the entrainment of small drops of liquid and impurities into the atmosphere, to improve the quality of gas purification from various impurities, to reduce environmental pollution.

Claims (1)

Φ o rmula and sampling A device for wet gas purification, comprising a housing divided by an internal profiled partition into an inlet chamber partially filled with liquid, a gas outlet chamber with a cyclone separator, and a mixing chamber located between them, made with an internal inclined wall provided with a resonator plate in the lower part and expanding along the gas channel, in the lower part of which is installed a guide plate, characterized in that, in order to increase the efficiency of gas purification, it is equipped with an inclined divider a septum located in the cavity of the inlet chamber with the formation of a confuser channel above it and a diffuser channel below it and made a gear at the output end, while the resonator plate is made elastic, fixed at an angle to the wall and is oriented along the flow, and the end part of the inner partition of the gas outlet chamber equipped with a 10 baffle arcuate plate, oriented in the flow.