SU919713A1 - Filter for cleaning gases - Google Patents

Description

(5A) FILTER for cleaning GASES

I. . The invention relates to the purification of gases from solid particles by a filtration method and can be used in the building materials industry, the metallurgical, chemical mining and other industries of the national economy.

A known filter for gas purification comprising a housing with inlet and outlet nozzles and filter elements filled with granular material and placed on perforated frameworks fixed in pipe recesses;

This filter allows cleaning of high-temperature gases, simplifies installation and replacement of filter elements. However, when cleaning large volumes of gas, the use of flexible filter materials with a permissible gas load of up to 1 / mVM min in the filter leads to a significant increase in the size of the filter and its metal intensity.

The aim of the invention is to reduce the dimensions and decrease the metal intensity of the filter.

This goal is achieved in that in the filter comprising a housing with inlet and outlet nozzles and. filtering elements filled with granular material and placed on perforated frames reinforced in tube sheets, each filtering element is designed as a package of toroidal elastic rings.

It is advisable to filter element. To provide a vertical gas-permeable partition, located inside the filter element.

The composition of the granular material of the filter element may include grains of different sizes, while small grains are placed on the periphery of the filter element.

Claims (3)

This embodiment of the filter reduces the hydraulic resistance of the filter element, reducing 3. 91 dimensions and metal intensity of the filter with the same performance or increase in performance with the same size of the filter. FIG. 1 shows a filter for gas cleaning, a longitudinal section; FIG. 2 — node t in FIG. 1. The filter includes a housing 1, divided by partitions 2 and 3 into a cavity of dusty k and cleaned 5 gases, filter elements 6 made in the form of elastic gas-permeable toroidal rings 7 filled with granular filter material 8 and mounted on each other on a rigid lattice frame E - Toroidal rings 7 are divided by a gas-permeable partition 10 into two half rings 11 and 12, each of which is filled with granular material of 8 different sizes, with coarser grains being located in half ring 12 adjacent to the cavity dusty gas. The upper part of the filter elements 6 is made gas-tight and is immersed by its upper end 13 in a bulk heat-resistant material 1 placed in an annular groove 15 located on a partition 2. The bottom end 16 filter element 6 is also immersed 3 a heat-resistant bulk material 1 placed in an annular gland 15 located on the partition 17 of the bunker 18 for collecting the collected dust. The filter elements 6 are located in isolated channels 19, the space between which is filled with heat and sound insulating material 20. The impulse chamber 21 is in the cavity 5 of the cleaned gas, equipped with annular nozzles 22 and a slot 23 that connects the impulse chamber 21 to the cavity 5 of the purified gas. The cavity k of the dusty gas is provided with a nozzle 24 for the entrance of the dusty gas, and the cavity 5 of the purified gas has a nozzle 25 for the output of the purified gas. The dust collecting bin 18 is provided with a dust shutter (not shown). The filter is also equipped with a shock wave generator and a control panel with a programmable device for regeneration modes (not shown). On top of the body 1 of the filter is equipped with a mounting hatch cover 26. 4 The filter works as follows. The dusty stream of gas through the pipe enters the cavity k. dusty gas from where it goes inside the filter elements 6, while larger particles of dust under the action of gravitational forces fall out of the gas stream into the hopper 18. The passage through the layer of filter material 8, the gas stream is cleared from. the fine fractions of dust and through the isolated channels 19 enters the cavity 5 of the purified gas, from where it is removed from the filter through the nozzle 25. As the accumulated dust particles accumulate in the granular filter layer 8, the hydraulic resistance of the filter increases, after reaching a certain value of which the sensors signal the control unit to clean the filter elements 6. The cleaning is carried out by pulses of shock waves coming from the generator of shock waves to the pulse chamber 21 and uniformly distributed over the annular nozzles 22. The pulses of shock waves with supersonic speed rush inside the isolated channels 19 and, the passage through the layer of granular fil The shredding material 8 is driven in by the dust accumulated in it, which enters the hopper 18 and is removed from it through the dust plug. The application of the invention allows to reduce the hydraulic resistance of the filter element, to reduce the size and intensity of the filter while producing the same, or to increase the performance with the same dimensions of the filter. ... Claim 1. Gas cleaning filter comprising a housing with inlet and outlet nozzles and filter elements filled with granular material and placed on perforated frames fixed in tube sheets, in order to reduce overall dimensions and reduction of metal consumption; each filter element is designed as a package of toroidal elastic rings. 59197136 2. The filter according to claim 1, about tl and h and yu grains of different size, while , u and with the fact that the filtering fine grains are placed on the periphery of the mentor, it is equipped with a vertical gas penetrating filter element, a partition wall placed inside the filter element. S 3. The filter according to claim 1, that is, and the fact that the granular matter of the filter element consists of Sources of information taken into account in the examination 1. USSR patent in application number 2560500, cl. On 01 D 27/00, 1977. Oui