SU1256772A1 - Gas washer - Google Patents

Description

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The invention relates to a technique for wet gas cleaning of dust, conducting heat and mass transfer processes and can be used in the chemical, metallurgical and other industries of the industry.

The purpose of the invention is to increase the degree of washing of the gas and the productivity of the device due to the direct movement of the liquid and gas.

FIG. 1 shows the device section; in fig. 2 - zigzag partitions, node I in FIG. one; in fig. 3 - sprinkler, section A-A in FIG. one.

The scrubber is made from a hopper 1, on which a vertical flushing chamber 2 is installed with gas inlet nozzles 3 and liquid 4. A gas inlet nozzle is placed tangentially to the washing chamber. Inside the washing chamber there are coaxially arranged zigzag partitions, the lower 5 and upper 6, which consist of zig 7, made in the form of truncated cones of different diameters. Zigzag partitions form an annular channel of variable section 8, directed at an angle to the axis of the device, have perforations 9 in the lower vertices of the ridges and gaps 10, 11 in the center of the lower and upper partitions, respectively. The inner truncated cone of the upper partition enters the fluid inlet pipe at a distance from its wall and is equipped with a sprinkler 12, made in the form of a cone, placed vertically upwards, the guides of which are made of plates 13 mounted at an angle to the generator with overlapping in plan. The lower zigzag partition, with its end, is rigidly connected to the truncated cone 14, which is directed with its top upwards and is installed at a distance to the washing chamber by means of plate ribs 15.

The device works as follows.

The dusty gas stream enters the flushing chamber 2 by means of a tangentially located nozzle 3 and is twisted. During the rotational upward movement in the washing chamber, the gas moves mainly along the periphery and turbulence of the liquid bar flowing along the walls of the washing chamber into the hopper 1, is irrigated by falling drops of liquid. When this occurs, the gas is cleaned from large dust. Move from the periphery of the wash chamber

1256772

to break 10 in the lower zigzag septum 5, the gas flow interacts with the liquid flowing through the perforation 9, splits it up into droplets, renews the surface of the contact of the phases, and partly removes dust. Part of the liquid falls under the force of gravity into the hopper 1, the rest of the liquid is carried by the gas stream, which through the gap 10 enters the annular channel of variable section 8

and passes through the water highly-dispersed curtain created by the sprinkler 12. As the sprinkler is made in the form of a cone, the guides of which are in the form of plates 13, set at an angle to the generator with a percussion in the plan, all the liquid entering the cone spreads over the plates 13 by creating flat jets that collide with each other, they are crushed, creating a highly developed contact surface. Since the inner truncated cone of the upper zigzag septum is inserted into the fluid inlet pipe at a distance from its wall, part of the fluid from the nozzle 4 is fed upward of the septum 6 and forms a level in the lower parts of the zigzag septum and through the perforation 9 is fed into the variable section channel 8 creating a gas washing area. The gas-liquid flow moves in a radially downwardly variable-diameter annular channel in a continuous flow mode, the passage of a succession of a curtain of fluid entering the annular channel from the upper partition 6 through the perforations 9 updates the phase contact surface and is washed off from dust. At the same time, a part of the liquid is deposited in the lower tops of the zigzag septum 5 and through perforation 9 it is removed from the septum, creating gas washing zones in the lower volume of the device. At the exit of the annular channel 8, the gas-liquid flow changes its direction. In this case, the liquid is separated into

wall washing chamber. Since the lower zigzag partition wall is rigidly connected at its end with a truncated cone 14 directed upward and installed with a gap to the wall of the washing chamber 2, a hydraulic lock is created and the liquid is drained along the wall of the washing chamber into the hopper 1. The gas freed from the liquid and cleaned dust is directed upwards.

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Claims (3)

1. GAS WASHER, including gas and liquid inlet nozzles, hopper, flushing chamber, inside of which there are zigzag partitions, consisting of zigs and forming a contact channel of variable cross section, characterized in that, in order to increase gas flushing efficiency and increase productivity due to direct-flow movement gas and liquids, ridges are made in the form of truncated cones of different diameters, zigzag partitions are installed in height coaxially at an angle to the axis of the device, made with perforation in the lower part There is a zig and with breaks in the center in the lower zigzag partition for gas inlet and in the upper for liquid inlet, the inner truncated cone of the upper partition being introduced into the liquid inlet nozzle at a distance from its wall and equipped with a sprinkler made in the form of a conical twist installed with its top up and the gas inlet pipe is placed tangentially to the flushing chamber. 2. Gas scrubber according to π. 1, characterized in that it is equipped with a truncated cone, its end rigidly connected to the lower zigzag partition directed. top up and installed with a gap to the wash chamber. 3. The gas washer according to paragraphs. 1 and 2, characterized in that the washing chamber is cylindrical. SU 125677 fie. 1 B>