DE2419604A1 - FILTER THAT CAN BE INSTALLED SEAL IN A ROOM AS A CROSS WALL, WITH SHEETABLE CONTACT MATERIALS FOR CLEANING IN PARTICULAR RADIOACTIVE AIR OR GASES - Google Patents

Description

PATENT LAWYERS

Dipi.-ing. H. Seiler Dipi.-ing. J. Pfenning Dipi.-Phys. KH Meinig

1 Berlin 19

Oldenburgallee 1O Tel. O3O / 3O4 55 21/22

Wireword: rope defense patent

Postal checking account: Berlin-West 59 38-1O2

April 19, 1974 Pf / Sp.

DELBAG-Luftfilter GmbH 1 Berlin 31, Schweidnitzer Strasse 11-16

Can be installed in a room as a transverse wall in a sealed manner, with pourable Contact material loadable filter for cleaning especially radioactive air or gases

The invention relates to a sealable installation in a space as a transverse wall, which can be charged with pourable contact material Filters for cleaning especially radioactive air or gases. Such filters are required e.g. for nuclear facilities for the separation of radioactive methyl iodide contained in the gases. As a contact material Usually granular activated carbon used with potassium iodide or activated with Tn'äthvldiamine. Such filters are as an adsorption filter in boiler housing or wall housing systems known. The filter housing forms a through on both sides

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Sieve limited filter chamber, which the contact material through The top and bottom of the filter chamber arranged funnel-shaped connecting parts is supplied and removed, and in which a closed, is assigned to receiving the contact material serving container. In the activated carbon layer, the Gases of entrained methyl iodide vapors or traces of radio iodine deposited by adsorption to prevent them from being released into the atmosphere with the exhaust air. Usually the Activated charcoal filter upstream and downstream of a particulate filter to ensure proper separation of radioactive particulate matter to ensure the air. In the case of nuclear facilities, depending on the size and the nature of the system requires different residence times of the gases in the activated carbon, so that the filters under-i must have different layer thicknesses; also result

j air volumes to be treated in different sizes in different systems, so that practically every nuclear system j has its own filter housing depending on the dimensions. Until now, these filter housings of different dimensions were produced as special designs, j being formed by the individual production naturally high costs', the instructions contained in addition to the due to the special production cost also by the material used>

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ben are that must be insensitive to any corrosive gas components and therefore usually made of stainless steel consists. These well-known adsorption filters can be found in Nuclear systems Application for maintaining negative pressure in reactor facilities, for purge air purification or for emergency air purification in the event of a reactor accident.

In today's reactor construction there is a demand for ever larger filter housings to accommodate the contact material, which mainly results from the ever-increasing amounts of air in the nuclear plant area

the exhaust air side must be cleaned because of the high • safety requirements. The well-known filter housings, as they are in the

j utility model 7 023 531 and described in DT-OS 2 164 147

ben are, are disadvantageous due to the equipment required and the space required.

The invention is based on the object of a designed as a transverse wall of a room, which can be charged with contact material To create a filter housing, which consists of individual prefabricated housing elements in any, any throughput speed ^.

-nality, each residence time and each gas volume adapted size can be built, so that the previously required custom-made housing come in failure, with the optimal

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few components are required, regardless of the size and width of the filter housing and regardless of the weight of the recorded contact material the achievement of a statically rigid construction is guaranteed, while at the same time a perfect filling and emptying is possible, an adaptation to different layer thicknesses depending on can be achieved by different residence times, an absolutely gas-tight assembly and installation in a simple manner the masonry is possible, and an optimally low cost of stainless steel or other rustproof materials Metals is given.

This object is achieved in that the the transverse wall forming the filter housing made of rectangular or square ones arranged in rows one above the other and side by side, identical housing elements consists of two frames formed from angle iron, which are attached to the Legs lying perpendicular to the direction of flow are covered by screens and on their legs parallel to the direction of flow lying legs are provided with through holes, and consist of two side plates, the screw connection having corresponding through-holes serving with the frame, that between each two adjacent in the horizontal direction lying housing elements a single side panel

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it is arranged that each vertical row of housing elements is assigned an upper and a lower connecting element is, which .. is provided with a circumferential bent edge, the screw connection with the frame and the side plates serving through holes, and that the side plates in the In the area of their ends facing the connecting elements, tabs provided with corresponding through-holes are attached own. The individual housing elements are identical to each other} they consist of two frames that are welded or Sieves fastened by riveting are covered and preferably have an edge length of one meter, and two corresponding ones Side plates, with only one side plate being provided between each two adjacent housing elements. the end filter housings of any height and width can be formed from these individual elements by simply screwing them together in a gas-tight manner, with adjacent vertical rows of

i housing elements result, each of which on the top and bottom ι

is provided on the side with a funnel-shaped connection part; ; the upper connection part takes up the required after-bag volume

■.

ί men with the appropriate safety margin. The : The filter housing according to the invention consists of stable continuous

j the side panels and with these screwed front and i rear square angle frames, with the vertical over-j

j

angular frames lying on top of each other also gas-tight '

j

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are screwed. In this way, each of the individual parts, which take up a small amount of storage space, can be used Assemble housings in any required size in a simple manner using screw assembly.

Another feature is that the side panels have a width corresponding to the maximum thickness of the layer of the contact material and that if one is selected With a smaller layer thickness, the through-holes arranged in the side panels create a mutual strength of the respective layer have the appropriate distance. Since the layer thicknesses of the active contact material depend on the given requirements can fluctuate between 250 and 600 mm, it is advisable for economic reasons to use prefabricated To have side panels of different widths available, for example a side panel with a width of 350 mm, another side sheet with a width of 450 mm and finally a side sheet with a width of 600 mm to be able to obtain any layer thickness.

In the case of particularly large filter housings, where the weight of the contact material can be several tons, indicates The invention is further characterized in that the angle iron frame

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at a distance from one another, directed perpendicular to two opposite frame sides, as a support for -to carry the covering screen serving rungs in the form of upright flat valleys.

Another feature is that in the vertical rows of frames adjoining the walls of the room, the outer rows Side plates of the housing elements have edge flanges bent outwards on their long sides, which form the screw connection with rails embedded in the walls.

To increase the static rigidity of the filter housing, the invention is further characterized in that the um-. running edges of the funnel-shaped connecting parts on their long sides, bent vertically, provided with holes Schenj-

! Kel carry the screw connection with them over the entire Width of the filter chamber extending the static stiffening rails, and that with the bent flanges the side plates on both sides, which are also used for static stiffening, extend over the entire height the filter chamber extending rails can be screwed.

Another feature is that the nozzle of the un-

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direct funnel-shaped connecting part known per se, the sealing attachment of a plastic bag serving rim rings carries, and that a gas-tight sealable, the plastic bag receiving barrel-shaped container is provided is.

For filter housings that provide special protection against earthquakes or require other vibrations, the invention is characterized in that the vertical rows of the housing ! elements with the connecting organs with the formation of a spacing in the

j appropriately shaped perforations in a pouring path (stamping

! concrete) made concrete wall are included, whereby in the j

i walls of the openings of the direct screw connection I j

with the angle iron frame serving threaded dowels arranged

I am. In this embodiment, the static safety

! hext is guaranteed by the th row of housings located in the concrete pillars. Here j

i j

! the lower funnel-shaped connecting parts from two by Ver-j

j I

j screw connection can be connected to the concrete wall with sieves

j covered angle frames are made, and the connecting pieces of the upper and; funnel-shaped connection parts on the underside outside the j The concrete wall can be screwed to the connecting elements while lying down.

j In this way, the lower trunk-shaped areas are also

I final parts in the actively effective filter layer with

j drew.

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Another feature of the invention is characterized in that

that in the direction of flow immediately before and after each perpendicular Series of vertical housing elements equipped with nozzles, extinguishing a fire of the contact material serving water pipes are arranged and the floor water; having drainage facilities.

It is also essential that the angle wires are made of stainless steel | and the side plates and connecting elements and their connecting pieces made of a steel provided with a corrosion-resistant surface.

ί made of sheet metal. :

Finally, it is also important that the filter housing ■ forming transverse wall at least one known per se, from the outside;

accessible bypass section designed as a tube, with its ends connecting the dust 'air space with the clean air space, is arranged, which has cartridges filled with the contact material corresponding to the layer thickness of the housing elements. ¹

The accompanying drawings show exemplary embodiments of the invention, and it means: j

Fig. 1 partial view of a filter housing,

Fig. 2 plan view according to Fig. 1,

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Fig. 3 side view according to Fig. I ₁

4 shows the container receiving the contact material flowing off,

Fig. * 5 exploded perspective view of a housing element with an- closing organs for lateral Wamd connection,

6 shows the representation according to FIG. 5, further housing elements being connectable to the side,

7 perspective drawn together Representation of the individual parts to be included in a concrete wall,

8 is a perspective view of a concrete wall _{r equipped with three vertical rows of housings}

FIG. 9 top view according to FIG. 8,

10 shows a representation according to FIG. 3 with an extinguishing device assigned to the filter housing,

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11 shows different arrangements of the filter to 13

housing.

As FIG. 1 shows, the filter housing 1 is received between the ceiling 2 and the floor 3 of a room. The filter housing 1 consists of several vertical rows of housing elements 4 arranged next to one another, each vertical Housing row, an upper and lower funnel-shaped connector 5 is provided, to which the contact material via a provided with a shut-off valve 7 pipe socket 6 is supplied or discharged. The pipe socket 6 of the lower connecting member

5 carries a rim 8 for receiving a plastic bag \

j means 9, into which the used contact material is emptied, j The plastic bag 9 is after filling by welding closed and is received in a barrel-shaped container 10, which can be sealed in a gas-tight manner.

According to FIG. 5, the housing element consists of two square angle iron frames 11 and two side plates 12. On the perpendicular to the flow direction lying legs 13 of the frame 11, a screen is attached by welding, while on the legs 14 of the frame lying in the flow direction

i through holes 15 are arranged. Between the horizontal j

lying legs 14 are j running in the pouring direction

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Flat steel rungs 16 attached at a distance from one another, which serve to support the sieve 17. The two connecting organs 5 are provided at their open end with a circumferential edge 18, which is also equipped with the through bores 15 is. The side plate 12 has on its inner surface an upper and lower inwardly bent tab 19, which also is provided with the through holes 15. When assembling the housing element, of which only one is shown here, with the connecting members 15 and the side plates is carried out by simply screwing the edges 18 of the connecting pieces in a gas-tight manner 5 with the horizontal legs 14 of the frame 11 and the tabs 19 of the side panels 12, the vertical Legs 14 of the frame 11 are also screwed to the side plates 12, so that a gas-tight sealed housing element is formed. For connection to a vertical room wall, the side plates 12 are on their long sides with outwardly bent, equipped with openings 15 provided with flanges, which are received in the wall Rail can be screwed gas-tight. The long sides of the circumferential edge 18 of the connecting members 5 are with upwards curved flanges 21 provided with openings 15, which are gas-tight with a received in the horizontal walls 2, 3 Rail 22 can be screwed.

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Fig. 6 corresponds to the Pig. 5 with the difference that here a housing element is shown between two others vertical rows of housing elements is arranged. Here the side plates 12 do not have any bent flanges 20; Instead, they are connected to the attached tabs 19 on both sides. Between two in a horizontal position Housing elements arranged next to one another in the direction of only one side plate 12 is thus arranged in each case, which is horizontally connected to the adjacent frame 11 is screwed to form a unit.

I FIGS. 7 to 9 show the arrangement of the housing elements in

; a concrete wall 26, which in the casting process or as stamped concrete

I is made and in the breakthroughs to accommodate the lower-I right rows of the housing elements are formed. The frame

i men 11 correspond to that of FIGS. 5 and 6; Side panels ^! are not provided here. In the side surfaces of the

ί breaks in the concrete wall 26 are threaded dowels arranged to Verj Screw connection of the frame 11 and the connecting elements 23, 25. Here, of course, the concrete casing with the

required accuracy and with templates. The upper and lower connecting members 23, 25 consist of I frame similar to frame 11, with frame 23 of the

; i

: upper connecting members are designed to be closed, while ι

I!

j the frame 25 of the lower connecting element with sieves;

! i

■ I

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are covered, as well as the frame 11, in order to obtain the dead space as small as possible and a larger active filter surface. The upper and lower connection pieces 24 lie outside the concrete wall 16 and are connected to the frame 25 or 23 and the concrete wall 26 by screwing. The vertical rows of the housing elements are here arranged at a distance from one another by forming a concrete pillar 29, which is a component of the wall 26 and ensures the required static rigidity. The seal between the perforations in the concrete wall 26 and the contact material results automatically, with a concrete being used which is impermeable to gas and is smooth and free of abrasion at the contact surfaces with the contact material. The arrangement according to the invention of the vertical rows of the housing elements in the concrete wall 26 ensures the necessary security against earthquakes and against other vibrations. As FIG. 9 shows, the concrete wall 26 is preceded and followed by a filter wall 28, which is formed from vertical frames with suspended matter filter cells 28 arranged in rows. A known bypass section is assigned to the concrete wall 26, which consists of a pipe 30 which, with its open ends, opens into the space in front of and behind the concrete wall and connects these two spaces with one another. In the pipe 30 are closed from the outside! common test cartridges 31 arranged, which correspond to the thickness of the layer of contact material located between the frame 11 ^!

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and serve to check the saturation level of the contact material in the filter.

Fig. 10 shows the arrangement of a quenching device for the contact material in the individual housing elements is recorded. Vertical water pipes 32 are arranged on both sides of the filter housing for the contact material, which are equipped with nozzles 33 directed at the contact filter in order to prevent the contact material in the event of a fire to extinguish this, whereby the charging of the nozzles with water is carried out by sensors known per se, which respond in the event of a fire.

FIGS. 11 to 13 show different possible arrangements gene of the filter wall formed from the housing elements 4. According to FIG. 11, this filter wall runs diagonally between two side walls arranged; Fig. 12 shows an arrangement in which the individual vertical rows of the housing elements 4 lie zigzag to one another, while according to FIG. 13 the one formed from the rows of exact elements 4 Filter wall is perpendicular to the air flow, but is arranged in outwardly directed bulges of the side walls.

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Claims (1)

Expectations /1. , Can be installed in a room as a bulkhead in a sealing manner, with "~ ^ pourable contact material, for example activated carbon, Loadable filter for cleaning radioactive air or gases in particular, preferably for nuclear technology Systems in which the filter housing forms a filter chamber which is delimited on both sides by sieves and which contains the contact material through funnel-shaped connecting elements arranged on the top and bottom of the filter chamber and can be removed, and a valve closure tra lowing nozzles of the top and bottom connection funnel each a closed, the inclusion of the j contact material serving container is arranged, characterized by that the Filter housing-forming transverse wall made of rectangular or rectangular or rows arranged one above the other and side by side square, identical housing elements η, which consist of two frames made of angle iron, which are covered by sieves on the legs perpendicular to the flow direction and on their Legs lying parallel to the direction of flow are provided with through-holes, and made of two side plates exist, which have the screw connection with the frame serving corresponding through holes that between - 17 - 509844/0625 see two lying adjacent in the horizontal direction Housing elements a single side plate is arranged that each vertical row of housing elements upper and a lower funnel-shaped connection part is ordered, the one with a circumferential bent edge; is provided that the screw connection with the frame! and has through-holes serving the side plates, and that the side plates in the area of their the funnel j shaped connecting parts facing ends,! tabs provided with corresponding perforations be j sit. j 2. Filter according to claim 1, characterized in that the ' Side plates one of the maximum thickness of the layer of Contact material have a corresponding width and that l if a lower layer thickness is selected, that in the side panels arranged through holes a mutual, distance corresponding to the respective layer thickness point. j 3-f filter according to claim 1 and 2, characterized in that: the angle iron frame arranged in the spacing, perpendicular '·, to two opposing frame sides right! preparing, serving as support for the covering wire flat '■ steel wear sprouted. ; -18- j 5098A4 / 0625 4. Filter according to claim 1 to 3, characterized in that the vertical frame adjoining the room walls row the outer side panels of the housing elements on their long sides, outwardly bent edge flanges have, which carry the screw connection with rails embedded in the walls serving through holes ; 5. Filter according to claim 1 to 4, characterized in that ! I. 'that the surrounding edges of the funnel-shaped connection! ! I. j parts on their long sides bent vertically with j ¹ stanchions provided legs contribute to the screw connection i ! i i j : with itself over the entire width of the filter chamber ; j stretching slide used for static stiffening j and that with the bent flanges of both - ; side panels on the outside are also the static! j ^: see rails that serve stiffening and extend over the entire height I of the filter chamber can be screwed 6. Filter according to claim 1 to 5, characterized in that that the neck of the lower connecting member known per se the sealing attachment of a plastic bag serving rim rings, and that a gas-tight seal! barrel-shaped 'barrel-shaped' Container is provided. I. - 19 - ^! 5098A4 / 0625 7. Filter according to claim 1, characterized in that the vertical rows of the housing elements with the funnel-shaped Connection parts with spacing in accordingly Shaped openings in a concrete wall made in the pouring path or as stamped concrete are, in the walls of the breakthroughs the immediate Screwing with the angle iron frame serving threaded dowels are arranged. 8. Filter according to claim 7, characterized in that the lower funnel-shaped connecting parts made of two connectable by screwing to the concrete wall with sieves covered angle frame exist, and that the nozzle of the top and bottom connecting parts outside the Concrete wall lying can be screwed to the connecting parts. 9. Filter according to claim 1 to 8, characterized in that in the flow direction immediately in front of and behind each vertical row of housing elements vertical with nozzles, the extinguishing of a fire of the contact material serving water pipes are arranged. 10. Filter according to claim 1 to 9, characterized in that the angle frame made of stainless steel and the side plates and j funnel-shaped connecting parts and their nozzle from one - .20 - 50984A / 0625 sheet steel provided with a corrosion-resistant surface. 11. Filter according to claim 1 to 10, characterized in that that at least the transverse wall forming the filter housing ß one known per se, accessible from the outside, as a pipe j is arranged with its ends connecting the dusty air space with the j clean air space bypass section, j I. the one corresponding to the layer thickness, with the contact I material filled cartridges. I. 509844/0625