SU952295A1 - Apparatus for cleaning gas flow from dust - Google Patents

Description

(54) DEVICE FOR CLEANING GAS FLOW FROM DUST

The invention relates to a technique for the purification of gases and may find application in the metallurgical, chemical and energy industries.

A cyclone is known for cleaning the gas stream from dust, comprising a cylindrical body with inlet tangential and outlet axial nozzles / filter nozzle from a layer of granular material and a dust collecting bin l.

The drawbacks of the device are the low cleaning efficiency due to secondary upos during grain friction against each other and the impossibility of selectively collecting large and small fractions of dust.

It is also known a device for cleaning a gas stream from dust, comprising a cylindrical body with inlet side and outlet axial nozzles, a filter element made in the form of a cylindrical cartridge of vertically arranged metal-ceramic pipes, and a dust collecting bin 2.

A disadvantage of the known device is the impossibility of selective

catching large and small fractions and their separate unloading.

The purpose of the invention is to provide selective capture of large and fine fractions of dust.

The goal is achieved by the fact that a device for cleaning a gas stream from dust, comprising a cylindrical housing with inlet side and

10 output axial nozzles, filter element made in the form of a cylindrical cassette of vertically located in. case of metal-ceramic pipes and a collection bin

15 dust, is provided with additional collecting bunker with discharge chute that covers the lower part of the cylindrical cassette, and the inlet side branch pipe is tangential.

20

Figure 1 shows the proposed device; FIG. 2 is a section A-A in FIG. 1. FIG.

Claims (2)

The device consists of a cylindrical body 1 with a hopper for collecting dust 2 with two branch pipes: input tangential 3 and output axial 4i Filter elements made in the form of a cylindrical case 5 of metal 30 are installed inside the body. ceramic pipes 6 with a plug in the lower ends and fixed in the distribution grid 7. An additional collecting bin 8 is installed under the cylindrical cassette 5 covering the lower ends of the metal-ceramic pipes 6. To discharge the dust from the additional collection 6yHitepa 8, the chute 9 is used at the outlet axial outlet pipe axis installed throttle valve 10. The device operates as follows. Dust gas enters the tangential inlet nozzle 3 into the housing 1. As a result of centrifugal forces, large dust particles suspended in the flow are thrown onto the walls of the housing 1 and fall out of the flow. Large dust particles that reach the walls of the casing under the action of an axially moving rotating flow and force of gravity move towards the collecting hopper 2 and are discharged from the device. After leaving the gas through the filter, the fine dust left in the gas is deposited on the metal-ceramic pipes 6. After the pulsed blowing, fine dust from the metal-ceramic pipes enters the additional collecting bin 8 and is discharged through a separate leakage 9. When the pulsed blowing is squeezed, the air enters the distribution the grid 7, in this case the throttle valve on the exhaust pipe is closed, thus ensuring the regeneration of metal-ceramic pipes. The device is designed for optimal flow rates of the gas to be purified, both when fed into the housing and when filtered through cermet pipes. The invention allows the selective capture of large and small fractions of incoming dust with their separate unloading in a single device. Apparatus of the Invention A device for cleaning a gas flow from dust, comprising a cylindrical body with inlet side and outlet axial nozzles, a filtering element formed in the form of a cylindrical cartridge of vertically arranged metal-ceramic pipes, and a dust collecting bin characterized in that . for the purpose of selectively trapping and separate unloading of large and small fractions of dust, it is equipped with an additional collection bin covering the lower part of the cylindrical cassette with discharge chute, and the inlet side branch pipe is made tang (special. Sources of information taken into account during the examination 1. USSR author's certificate № 667249, class В 04 С 9/00, published on 06/15/79. 2. The UK patent number 1395983, class, BIT, published. 05.29.75.