SU1030031A1 - Apparatus for cleaning gases from aerosols - Google Patents

Abstract

1. DEVICE LH CLEANING OF GAS FROM AEROSOL, with fixed body, mounted on the head (with a shaft formed by a wall, lid and bottom plate) 1 chamber with an inlet for gas and with openings for gas through the cyclones inlet, fixed under the bottom it is different in order to increase the gas cleaning efficiency, it is equipped with a tangential outlet pipe and is made of two parts, with the bottom in which the cyclone inlets are fixed, fixed to the shaft, wall and cover connected to a fixed case, the inlet is tangentially mounted on the wall of the chamber, and the input patra & cyclones with their holes are directed in the direction of rotation of the shaft. 2. The device according to claim 1, which is with the fact that cyclones (P made Pr -1motochnye.

Description

The invention relates to the technique of separation of aero-dispersed systems and can be used for the purification of gases in the chemical, metallurgical and mining industries. A device for cleaning gas from aerosols is known, comprising a casing with a tangential inlet and outlet nozzles and a package of disks mounted on a rotating hollow shaft Cl The gas is first cleaned in a cyclone portion of the device, then between the rotating imys disks and discharged through the shaft, therefore this device There are shortcomings: limited gas flow and speed in the inlet tangent port, low efficiency of dust and liquid removal and gas cleaning. It is also known a device for cleaning gas from aerosols, comprising a stationary body, mounted on a rotating shaft formed by a wall, a cover and a bottom a distribution chamber with an inlet for gas and with holes for gas to escape through the cyclone inlet patches. bottom. In the known device, due to the simultaneous action on aerosols of the centrifugal force that occurs when the gas flow rotates inside the cyclones and the centrifugal force that occurs when the cyclones themselves rotate, the cleaning efficiency increases C23. However, in the distribution chambers of the pre-treatment of gas does not occur,. and the rotational speed of the gas in this chamber is determined by the rotational speed of the cyclones, which limits the flow of gas through the device in maximum efficiency mode. The purpose of the invention is to increase the gas cleaning efficiency. The goal is achieved by the device for cleaning gas from aerosols containing a stationary body mounted on a rotating shaft formed by a wall, a lid and a bottom distribution chambers with an inlet nozzle for gas and with openings for the exit of gas through the nozzle of cyclones fixed under the bottom, equipped with a tangential outlet and made of two parts, while the bottom, in which the inlet pipes of the cyclones are strengthened, is fixed on the shaft, the wall and the cover are connected to the fixed case, the inlet the nozzle is installed tangentially on the chamber wall, and the cyclone inlet nozzles with their holes are directed in the direction of the shaft rotation. In addition, cyclones are continuous. FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one; figure 3 - node B in FIG. one; in fig. 4 - section BB on. FIG. 1. The device consists of a distribution chamber 1 ,. including a cylindrical body 2, a tapered nozzle 3 for discharging the collected material. In the cylindrical housing 2 there is a tangential inlet nozzle 4. On the hollow shaft 5 installed in the chamber 1 in the bearing assemblies b coaxially with the cylindrical housing, there is a separation unit consisting of straight cyclones 7 radially fixed on the hollow shaft 5 with exhaust nozzles 8, evenly spaced around the circumference. The shaft cavity communicates with the cyclone cavity through the holes 9. On the shaft 5, the bottom 10 of the distribution chamber is fixed. The inlet pipes 11 of the cyclones 7 are located in the openings of the bottom 10 and are directed by their openings towards the rotation of the shaft. Weekend off-. These 12 for dust and liquid are separated from the distribution chamber 1 by the bottom 10. To remove dust and liquid from the groove 13 of the distribution chamber 1, a tangential outlet 14 is made with an opening in the housing 15. The peripheral part of the bottom Yu is made with a cylindrical flange 16 and a collar 17. Minimum gaps between the shoulder 17 and the tord 18 of the cylindrical body 2, as well as the cylindrical surfaces 19 and 20, are met. The shaft 5 is driven in rotation from the electric motor 21 through the coupling 22. Between the bearing units b there is a chamber 23c with a pipe 24 for draining the cleaned gas. The chamber 23 through the holes 25 communicates with the cavity of the shaft 5. The collection of the separated material takes place in the slurry chamber 26. The device operates as follows. The moistened gas is supplied to the CYLINDRICA 2 of the defining chamber 1 through the tengenic inlet 4. Under the action of centrifugal force in the cylindrical body 2, the initial cleaning of the Strip takes place. In this case, all droplets with particles larger than the limiting size for a given diameter and a given gas feed rate precipitate. Separated from the gas stream, liquid droplets are collected in the groove 13 and removed from zone 6 through the opening 15 and the sleeve 14. The smallest particles are in the stream. The hollow shaft 5 rotates in the direction of the GHr where the inlets of the nozzles 11 and cyclones 7

directed to the movement of the gas flow entering the zone G through the tangential nozzle 4, which reduces the drive energy consumption. The pelvis, cleared of large particles through the tangential openings of the nozzles 11, passes into the 5th cavity of the cyclones 7, where its final separation takes place. The fine particles, separated in cyclones, are discharged through the outlet openings 12 into the deposition zone D and from there O through the cone nozzle 3 get into. sludge chamber 26.

The separation of the distribution chamber from the bottom of the deposition zone and the use of cyclones significantly increases the efficiency of primary and secondary gas cleaning. For the primary purification stage, an increase in efficiency is ensured; it ensures the elimination of the already separated 20 particles by the purified gas by eliminating the oncoming gas and particle movement, since the removal of the separated particles by the purified stream is one of the drawbacks of cyclones, for which the amount of 25 particles carried away is proportional to the gas consumption. Thus, in this device, it is possible to increase the gas consumption not only without degrading the cleaning efficiency, but also with improvement due to an increase in centrifugal forces.

In the second stage of gas purification, an increase in efficiency is achieved by

for reasons. The first is to omit that, in this device, the secondary penetration of fine particles separated from the stream in the cyclones back into the stream is excluded. This is achieved by installing a bottom separating gas suitable for cyclones from a stream of fine particles separated in cyclones. The second reason for increasing gas cleaning efficiency is due to the use of flow cyclones. Small particles that enter the cavity of the rotating zinc with the gas through the tangential nozzle are subjected to the action of an additional field of centrifugal forces directed towards the flow of the purified gas removed from the cyclone. These forces act on each particle and are directed in the direction of the exit opening of the diclon and, thus, contribute to its more intensive removal. Compared to conventional cyclones, an unseparated particle, in order to exit cyclone with gas, must overcome the resistance force of the centrifugal forces directed toward it, which increases the critical velocity of the sparks, reduces the minimum diameter of nonseparated particles and more reliably removes them from the cyclone. .

The proposed device allows gas to be purified with greater efficiency.

Claims (2)

(541 1. DEVICE FOR CLEANING GAS FROM AEROSOLS / containing a fixed housing mounted on a rotating shaft formed by a wall, a cover and a bottom, a distribution chamber with an inlet for gas and with openings for gas outlet through the inlet nozzles of cyclones fixed to the bottom, distinguishing from i the fact that, in order to increase the efficiency of gas purification, it is provided with a tangential outlet pipe and made of two parts, while the bottom, in which the inlet pipes of the cyclones are fixed, is fixed to the shaft, the wall and cover of the soy dinene with a fixed housing, the inlet nozzle is installed tangentially on the wall of the chamber, and the inlet nozzles of the cyclones with their holes are directed in the direction of rotation of the shaft. 2. The device according to π. 1, the fact that cyclones are made direct-flow.