SU1319892A1 - Apparatus for cleaning gases - Google Patents

Abstract

The invention relates to the purification of gases from solid particles by the method of filtration through a granular medium in the production of light artificial porous aggregates, for example perlite. The purpose of the invention is to increase the efficiency of cleaning high-temperature gases from dust in the production of perlite, improving the process of replacing the filtering granular material and simplifying the design. The device comprises a housing 1 (K) with a chamber 2 (LC) dusty and chamber 3 (OK) purified gas. In К 1, volumetric filtering cells (I) formed by the inner 7 (BC) and the outer 8 gas-permeable walls and radial gas-tight partitions are rotatably mounted on a vertical shaft 4 rotatably through a drive 5. I am filled with filtering granular material 10 (M). The device is equipped with an inertial separator 11 (I), which is connected to the pipeline of the finished product 14 (T) by means of oblique leakages 12 and 13, and is constantly immersed in M 10 by means of vertical leakage 15. The device is equipped with a fixed vertical semi-shelf adjacent to the BC 7 two I and forming together with the radial partitions 17 the zone of replacement of M 10, isolated from LC 2 and OK 3 gases. Case 1 is equipped with a bunker 19 (B), in which a reverse truncated cone 20 (CC) is installed coaxially, to the larger base of which is attached a horizontal ring 21 (CG) with a hole displaced relative to the axis 11 I on the junction I, forming an annular gap 23 between K 1 and GK. The cone 24 adjoins to the smaller base of the criminal code with the formation of an annular gap 25 between them. I in the upper part are made gas-tight in the form of a circular box 26 with an expanding section from bottom to top. K has fittings for the inlet of the dusty 27 and an outlet for the purified 28 gas, for removing the dust 29 and M. In T there is a throttle 30. 30. 1 h. n. f-ly, 3 ill. (L co; o oo co

Description

The invention relates to devices for the purification of gases from solid particles by the method of filtration through a granular medium in the manufacture of light artificial porous aggregates, for example perlite.

The purpose of the invention is to increase the efficiency of cleaning high-temperature gases from dust in the production of perlite, improving the process of replacing the filtering granular material and simplifying the design.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

The device comprises a housing 1 with a chamber 2 of dust and a chamber 3 of cleaned gas. In case 1, filter volumetric cells 6 formed by internal 7 and external 8 by gas-permeable walls and radial gas-tight partitions 9 are rotatably mounted on a vertical shaft 4 rotatably by means of a drive 5. Cells b are filled with filtering granular material 10.

The device is equipped with an inertial separator 11, which by means of oblique chutes 12 and 13 is connected to the pipeline 14 of the finished product, and by means of vertical chute 15 is constantly immersed in the filtering granular material 10, and a vertical semi-barrier 16 fixedly adjacent to the inner gas-permeable wall 7 of two bulk cells 6 and forming together with the radial partitions 17 a zone 18 for replacing the filtering material 10, isolated from the dust chamber 2 and the clean gas chamber 3.

The housing 1 is equipped with a hopper 19, in which a reverse truncated cone 20 is installed coaxially, to a larger base which is adjacent a horizontal ring 21 with an opening 22 made therein that is offset from the axis of the inertial separator 11 by a step of cell 6, thus forming an annular gap 23 between the housing 1 and ring 21. To the smaller base of the reverse truncated cone 20 there is an adjacent cone 24 with the formation of an annular gap 25 between them.

Filter bulk cells 6 have a chamber 26 with gas-tight walls in the upper part of the section upwards extending from the bottom up.

The hopper 19 is connected to the silo of the finished product (not shown).

Case 1 has nozzles 27 and 28 for the entry of dusty and exit of the purified gas, respectively, as well as nozzle 29 for outputting dust and granular material 10.

In the pipe 14 of the finished product, the throttle valve 30 is installed to regulate the gas flow rate in the inertia separator 11, which influences

into the fractional composition of the granular material being separated 10.

A device for gas purification in the production of perlite works as follows.

The dust-laden gas enters the housing 1 through the nozzle 27 and, as it passes through the chamber 2, it loses speed, resulting in large particles of dust falling out of it, which

through the annular gap 23 in the horizontal ring 21 into the bunker 19. The passage through the layer of filtering granular material 10 and being cleaned in it, the gas stream enters the chamber 3 of the purified gas, from where it is discharged to the atmosphere through the pipe 28 in the chamber 3, elusive dust particles fall out and, by means of a reverse truncated cone 20 and cone 24, are discharged into the hopper 19 through the annular gap 25.

Simultaneously with the filtering, the origin of all but two of the cells 6, in one of the two cells that fall into the zone of replacement of the filtering material, the device is filled with a granular material. For this purpose, the pipeline 14 of the finished product, through which the finished product is transported by means of flue gases — expanded perlite — is connected to volume filter cells 6 by means of an inertial separator 11.

By covering the throttle valve 30 on the pipeline 14, part of the gas together with the transported product rushes down along the inclined diverter 12 of the inertial separator 11 and then, abruptly changing the direction of movement, again enters the pipeline 14 through another inclined diverter 13.

In this case, due to inertial forces from the flow

gas emit the largest granules of expanded perlite and along vertical flow 15 enter filter bulk cells 6. As they periodically rotate around the vertical axis, their alternate filling with expanded perlite occurs. By varying the amount of gas passing through the inertial separator 11, using the valve 30 on the pipe 14, the desired fraction of the filler is deposited, which makes it possible to control the degree of gas purification and the magnitude of the hydraulic resistance.

As the dust particles accumulate on the perlite granules, the hydraulic resistance of the device increases. Its regeneration is carried out by periodically replacing the spent dusty perlite in the filtering volumetric cells 6 with clean waste coming from the inertial separator 11.

Periodically, by rotating the vertical shaft 4 by means of the drive 5, the filter volumetric cells 6, which are rigidly connected with the shaft 4, are rotated one step. At the same time, in the zone 18 of replacing the filtering material 10, isolated from the chambers of the dusty 2 and purified 3 gas, by means of seals (not shown), radial partitions 17 and a vertical semi-barrier 16 fixedly adjacent to the inner gas-permeable wall 7 in the width of two cells, the following movements : Cell 6, standing under the inertial separator 11, leaves the zone, in its place is cell 6, which was previously under unloading, and new cell 6, which is included in filter replacement zone 18, zone 18 replacements s filter material 10.

The cell 6 entering the filter replacement zone 18 of the filter material 10 is in such a position that, through the opening 22 in the horizontal ring 21, the spent dusty filter material 10 is poured into the hopper 19. The radial partitions 17 prevent the dust cloud that is formed.

When turning to the next gate, the cell 6, freed from the spent filter material 10, becomes under the vertical estrus 15 of the inertial separator 11 for loading with clean material, while the cell 6 stops communicating with the hopper 19 due to the absence of a hole in the horizontal ring 21 in this place. Clean filter material 10 fills cell 6.

When rotated to the next stage, the cell 6 is withdrawn from the zone 18 of the replacement of the filtering material 10 and enters into operation in the filtering mode.

Claims (2)

1. Gas cleaning device, comprising a housing with inlet and outlet pipes, mounted on a vertical shaft rotatably filter volumetric cells formed by inner and outer gas-permeable walls and radial gas-tight partitions between which the filtering granular material is placed and separating the housing into chambers dusty and purified gas; a bunker for collecting dust and granular material, characterized in that, in order to increase the cleaning efficiency of high-temperature gases, tons of dust in the production of perlite, improving the process of replacing the filtering granular material and simplifying the design, the device is equipped with an inertial separator immersed in the filtering granular material, a fixed vertical half barrier, adjacent to the inner gas-permeable wall of two volume cells its larger base horizontal ring, made with a hole, the axis of which is offset relative to the axis of the inertial division cell bodies in the step, and a cone fixed to the lower base of the inverse frusto-conical to form a gap therebetween. 2. A device according to claim 1, characterized in that the filtering volumetric cells have in the upper part an upwardly expanding section of the chamber with gas-tight walls. 2J GB zt / -ge IS gz Aa L L FIG. 2 1 22 Fig.Z