SU1369765A1 - Centrifugal drip pan - Google Patents

Abstract

The invention relates to a device for the purification of gases from suspended particles and makes it possible to increase the degree of drop-collecting. The centrifugal mist collector contains a cylindrical casing 1 with an inlet 2 and an outlet 3 with nozzles, a swirler 4, an annular louvered grille 5 in the form of curvilinear blades with L-shaped pockets, a cylindrical shell 8 attached to a gas-permeable neck.

Description

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a partition 9, a bypass line 10 with an adjustable damper. 11, a gas flow sensor 12 and pockets 13, 14, 15 for draining the collected liquid. An increase in the degree of drift removal is achieved by increasing the radial flow of the gas / water mixture from the central zone of the drift heater through the louvers to the cavity formed by the gas-permeable partition 9, the housing 1 and the louver grille 5, which is provided by connecting the central zone of the swirler 4 with the periphery of the drip hood ) through conduit 10. Drops are deposited efficiently on the concave surface of the blades and are retracted into the L-shaped pockets. The quality of the cleaning is regulated by changing the position of the valve 11 in accordance with the indication of the flow sensor 12. 2 Il.

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The invention relates to devices for the purification of gases from suspended particles and can be used in the metallurgical, chemical and other sectors of the industry.

The aim of the invention is to increase the degree of droplet collection.

FIG. 1 shows a drop catcher, a general view; in fig. 2 shows section A-A in FIG. one .

The centrifugal droplet separator contains a cylindrical casing 1 with an inlet 2 and an outlet 3 with nozzles, a swirler 4 mounted at the entrance to the droplet separator, an annular louvre grille 5 made in the form of blades 6 with L-shaped pockets 7 a cylindrical shell 8 attached to a gas-tight a baffle 9, a bypass line 10 with an adjustable valve 11, a gas flow sensor 12 and pockets 13, 14 and 15 for draining the collected liquid. i

Centrifugal drip pan works as follows.

The gas duct enters the mixture through the inlet nozzle 2 into the swirler 4 and acquires rotational translational motion. Due to the centrifugal forces, the droplets of liquid are thrown onto the louvered grill 5.

Due to the connection of the central rarefaction zone in the swirler 4 by means of the pipeline 10 with the peripheral zone of the drip catcher, 5-10% of gas from the central zone of the drip catcher drains through the louvered grill 5 into the cavity formed by the gas-tight partition 9, the housing 1 and the louvered grill 5. This circumstance contributes to an increase in the radial component of the velocity of the droplet, i.e. favors the separation of droplets. The concentrated gas duct on the mixture, the passage between the curved blades 6, is exposed to its own floor of centrifugal forces of the louver grille 5. Since the radius of curvature of the blades 6 is very small, the centrifugal forces directed in the direction of the concave blade are quite large.

Imposing on the rotational movement of a drop, their relative movement in the interscapular space contributes to a significant increase in the Coriolis force acting on the drop and also directed toward the concave surface of the blade.

Thus, practically all the droplet moisture entering the volume of the louvered grille is thrown onto the concave surface of the vanes 6 and, through the L-shaped pockets 7, is diverted to the bottom of the drop catcher in pockets 15 and further into the slurry sewage.

The gases that have passed through the louvered grill are additionally released from the remaining moisture during rounding

cylindrical shell 8. Further, these gases due to the pressure difference at the periphery of the drip pan and the axis of the swirler are transported bypass

the pipeline 10 to the axial region of the swirler and is subjected to repeated cleaning, and also creates the possibility of maintaining optimally defined gas velocities in the cross section of the drift catcher at a variable flow rate of gas passing through it.

Going beyond the louvered grill 5, the gas continues to move upwards, and the residual entrapped liquid is discharged by means of pockets 13 and 14 to the sewer drainage system. The gas, purified from droplet moisture through the outlet pipe 3 leaves the drip tray.

The presence of an adjustable damper 11 on the bypass pipe 10 makes it possible to regulate the efficiency of trapping with an unstable gas flow depending on the readings of the flow sensor 12.

Thus, the degree of drop-collecting is achieved by increasing the radial flow of the gaseous mixture into the isolated cavity through the louvered grille (respectively, reducing the flow from the cavity through the louvers to the axis of the drift catcher) without additional energy costs, efficiently depositing a drop on the surface of curved blades and their removal along -shaped pockets, re-cleaning of abstracted gases and

control of cleaning quality with unstable gas flow.

Claims (1)

Invention Formula Centrifugal drip tray containing a cylindrical housing with. inlet and outlet nozzles, a swirler, an annular louvre grille coaxially mounted in the housing, characterized in that, in order to increase the degree dropping, it is provided with an annular gas-permeable partition placed between the casing and the louvre grille, a coaxial cylindrical shell fixed on a gas-tight partition, a by-pass pipe connecting the axial area of the swirler with the cavity between the shell and the casing and equipped with an adjustable damper, The louvre louver louvers are made in the form of vertical curvilinear blades curved in the direction of rotation of the flow and equipped with L-shaped pockets located along the entire height of the blades on their concave side on the edge nearest to the casing, and the inlet pipe is equipped with a gas flow sensor connected to adjustable damper. fig.g