JPS588523A - Apparatus for filtering contaminated fluid by using particulate material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an apparatus for passing contaminated fluids using particulate materials capable of adsorbing and/or absorbing substances contaminating the fluid. A number of transient beds formed by granular material through which fluid flows are arranged in the casing, and furnace material charging compartments and V
The present invention relates to a filtration device that is equipped with a material discharge section and that allows pneumatic exchange of P material.

These filtration devices are used in particular in the nuclear industry to purify the air exhausted from nuclear power plants. Granular materials, often composed of activated carbon or olides, have a limited service life and must be replaced periodically.

The charging and discharging operations required for this exchange are: - intermittently pumping the furnace material into the charging compartment, which communicates with the legal system, and sucking out the P material from the discharge compartment, which also communicates with the transit bed; This is done by a pneumatic transfer device.

Transient devices that utilize pneumatic devices such as.

French Patent No. A 2. +3! , described in the Jri issue.

Currently known transient devices of this type have the following drawbacks.

The parallelepiped casing, which includes an inlet chamber and an outlet chamber for one fluid on both sides and a central part housing a nine-pronged casing, has a fairly large external dimension and is difficult to replace in the event of a failure. This is particularly a problem if the casing is installed in a very confined space and there is not enough access space around it.

- due to its specific shape, the casing contains wasted space above and below the flow bed through which the fluid to be purified may pass through, or very little;
This rounding is expensive, and the efficiency of using the granular V material, which must be replaced frequently, is low.

One casing, being a parallelepiped, cannot sufficiently withstand the pressure of the fluid to be purified, which is usually a gas.

- The granular F material sent to the charging zone iii contains dust, that is, particles smaller than the average particle size, so the particle size distribution of the F material formed by the overloading method is uneven. - may result in contamination.

The present invention aims to overcome the above-mentioned drawbacks and for this purpose comprises a collection of a number of mutually spaced hollow elements in the shape of a flat parallelepiped box;
a parallelepiped jacket surrounding the assembly; nine filtration elements are arranged inside the casing; each of the elements has a diamond-shaped frame;
Allow the fluid to be purified to pass through, but not the p-material particles.
The elements are arranged in a row so that one diagonal of the diamond shape is horizontal, and the cross-sectional shape of the jacket is A diamond-shaped hole corresponding to the frame portion and a space between adjacent elements is intended to provide a transit device in which a space between two adjacent elements receives granular material to form the filter bed.

The O-shape is a large parallelahedron with a rhombic cross section, and its arrangement is such that the frame (T or jacket cross section) has one of the diagonals horizontal (the other diagonal is somewhat inclined with respect to the -direction). This arrangement allows the shape of the casing to be other than a parallelepiped, and also allows the inlet and outlet chambers of the round of the fluid to be purified to be placed on either side of the filtration unit. can. As a result, the space of the casing can be made much smaller, and therefore the handling of the casing can be made easier.

According to another feature of Jin's invention, the shape of the casing is cylindrical, the cross-sectional shape of the hollow tube (OellTh) and the jacket is square (I), and the filtration tube (F) is disposed within the casing coaxially with the casing. The square O cross section of the filtration unit is inscribed in the circular cross section of the casing for I/%.

Since the casing, on the one hand, and the frame and jacket, on the other hand, each have the shapes as described above, and therefore the relative positions of the casing and the unibody are as described above, the maximum dimension of the casing is In addition, the volume can be reduced, and wasted space can also be significantly reduced, so the efficiency of using one granular material can be improved.

According to another feature of the invention, the cylindrical casing has dish-shaped end plates at both ends thereof.

Due to this shape and structure, the casing can sufficiently withstand the pressure of the fluid to be purified.

According to yet another feature of the invention, the jacket includes an F-material supply slit in its upper part and an F-material discharge slit in its lower part, and these slits are arranged along the upper and lower inner edges of the filtration unit, respectively. and the charging section and the discharge section lines respectively communicating with these slits.
is formed by.

In this way, the charging and discharging of a single granular material can be carried out by utilizing the shape and position of the filtration unit.

According to another feature of the invention, the charging device includes a feed hole that communicates with the material press-in device through a distribution device, and the feed hole is connected to the material press-in device through a distribution device. It has a dust removal chamber in the upper part and a distribution chamber in communication with the charging chute in the lower part, and these dust removal chambers are partitioned by a perforated wall.

Therefore, in the transit device based on this 1jik generation, it is possible to remove O dust when charging the P material.

Other features and advantages of the invention will become apparent from the following description.

In the embodiment shown in the attached drawing page O, this device of the IjlK company, intended for the removal of radioactive contaminants from an air stream, has a cylindrical casing 100 of circular cross-section with an axis xx', This casing O inside KP't-
'=t/I/ is placed. This-overenit1
0/company, mainly consisting of an aggregate formed by hollow elmmen (10J) of the same specifications arranged in a line without contacting each other (K), and a jacket l0! surrounding this aggregate. The above Niremen>1
02 is, nevertheless, a diamond-shaped, in particular square in the illustrated embodiment, a frame 103 having a small thickness compared to the length of the sides;
It has J parallel surfaces 10#a and 10#b, and thus each element 10λ forms a flat parallelepiped box. The surfaces 10#1 and 10#b are formed by a round metal mesh having a large number of holes so that the fluid to be purified, that is, air, can freely pass through. The mesh of the metal mesh is sufficiently small that particles of the material forming the F bed, such as activated carbon, cannot pass through. Each side is 10Ja, 10J
The rectangular frame portion 103 represented by b, l0Jc, and 101d has adjacent sides, for example, 10Ja and 1oib.

! 10Jc/OJ 41 has a window 104 for passing the air to be purified. The 10 elements are installed so that the windows 106 of adjacent elements are alternately located, that is, the windows 106 of adjacent elements are alternately located on the upper and lower sides K in FIG. 3, and on the right and left sides in FIG. It is being

Elements 1 arranged in a row without touching each other
A jacket 101 made of thin stainless steel plate, for example, which surrounds the assembly of 0J and has a square cross-section O square hexahedron, includes an affected part lθγ corresponding in position to the window part 0t on each of its 0 sides. There is.

In the space between 10 pieces (two adjacent elms), there are grains.
The material is filled, thus forming a multiple O filter bed 10r. This, the filter bed 1 ota, the adjacent one o niremen) 10 JO er 10# and/l) #b, and the jacket 101 and k, so that the element lO
Like J, it has a square shape. Filtration Enits FtoiF
i, casing.

/DO is placed in the casing in a coaxial state, ,
In this case, the square O parallelepiped & et 10/ is left unfilled by one layer to show the upper inner edge of I and the lower corner edge of /)0.

The jacket 107 includes one granular material supply slit in the upper part corresponding to the upper inner edge of the unit 10/).
, and is equipped with a shear)/10 for charging the granular F material supplied through the feeding hole ///. shade/
10 is divided into an upper chamber //L and a lower chamber //J by a perforated wall made of thin sheet metal that is substantially parallel to the slit 10.

said upper chamber //44, one end of which is connected by said supply hole //4, forms a 1ll-dust chamber, and
The other end has a connecting sleeve 7 for connecting to a conventionally known dust suction device (not shown).

On the other hand, the lower chamber //j is a distribution chamber communicating with the slit 10, and connects the perforated ramp //Ja, //jb supplied with compressed air to the lateral self-portion 111 of the slit. have Perforated ramp //Ja, //lb are arrows in the first figure!
As shown in the figure, the compressed air jet is placed in the lower chamber//lower part of j//! m, //jb. The lower chamber //J further includes a dihedral distribution member //7 below the supply hole /// sp6. This distribution member is
It is arranged below the perforated wall so as to be parallel to and cover the slit 10. Distribution member//
7 is a slit 10 for the granular material that has passed through the perforated wall //1.
This is to ensure that the granular material is evenly distributed over the perforated ramps I and Jb and does not fall directly into the slit 10.

The supply percentage / / / is determined by a conventionally known press-fitting device (not shown) and a distribution device lJO including a straight pipe /J/ for adjusting air pressure, one end of which is connected to the press-fitting device; A diverging nozzle /JJ for reducing the pressure transfer speed, and a diverging nozzle /JJ arranged at the end of the straight pipe /J/ and a terminal pipe /JJO.
It also receives granular material sent through a buffer body made of, for example, ♂^, which is intended to prevent the destruction of furnace material particles in collision 0111.

The jacket ion has a discharge slit l-! at the lower part corresponding to the lower inner edge of the over-eating 10/! and is provided with an ejection seat lever 4 which is in direct communication with the ejection slit.

The discharge chute saw 1 has a closable discharge connection pipe/core for connection to a conventionally known F material suction device (not shown), and a discharge slit saw on both sides of the discharge slit saw I near the discharge liquid pipe/J7. It has one side area %/-h/kota,/Jlb arranged.

The side sieves are for allowing dust to be discharged as described below.

Casing/DO is D/JK is one semi-cylindrical body 1 of semi-circular section with approximately equal or slightly larger radius.
00m and 1oohK, these semi-cylindrical bodies are charged with a charging shade of
It is welded with Jj. Semi-cylindrical bodies 1001 and 100
b is a connection port 1301 with 7 flanges at both ends for connection to a circuit (not shown) for conveying the air to be purified;
and /J/ dish-shaped end plate 130 with insects and /J/J
/C is closed. A round connection port for receiving contaminated air in the internal space of the casing/JOa is connected to the 9th inlet/JIL, and a connection port for discharging purified air/J/a is connected to the outlet chamber/3. ! The two lid parts /JJ and /JJ are divided into two semi-cylindrical bodies 100.
Welded to heat, 100k) and -overhead lol. Some of the 10 adjacent elements/at are alternately connected to the inlet chamber 13-41 and the outlet chamber/31,
In this way, the air that enters the inlet chamber/J#j/C from the connection port/Jam will flow into the outlet chamber/J#j/C as long as it does not pass through the legal/DI.
It is now impossible to enter JJ. Arrow r in Figure 3
shows the flow path K follows until contaminated air enters from the connection port /Jam, is purified, and then exits from the connection port /J/a.
4 is attached with IIL sand.

The axis Xxt of the casing ioo is about l with respect to the horizontal! It is mounted on the underframe/J7 in a tilted state. Such a distribution fK, 1 grain-material, supply hole ///
It is easy to move from the charging chute to the discharge chute saw 4 to the discharge connecting pipe J7.

When charging granular materials, the distribution device l-〇
//l/C The introduced granular f material is in the lower chamber ll! In this lower chamber, the granular material entering the dispensing member/
/ 7, the air is guided towards the perforated ramps 1 and tJtb, and is then stirred by the air ejected from these ramps, and then flows into the lower chamber 1! Proceed to the lower side lh1 and tJtb.

Next, the granular P material passes through the slit 10 and the element 1
02, thus forming -legal 10r. During stirring, the fine dust of material F that has entered the lower chamber is sucked through the perforated wall and released from the connecting pipe.

To discharge the granular P material, connect the discharge connecting pipe /J7 to the suction device, and the contaminated 9 granular P material forming the F bed will be discharged from the lower slit) /ko! released through s--)/J
4 Enter K. In the final stage of dispensing, the vibrator/It is activated to facilitate evacuation of the particulate material. F
Fine grains or dust of material are on surface 10#a of 10 elements.
, 10) through the entrance chamber/34I and exit chamber I
J! Low point/J$a.

/JjaK Tamatsu-Kubasha are also sucked in and released from the connecting tube l core through sieve 721m, tJtb. The noteworthy point is Furu%/%/Jra.

tJtb prevents standard size P material particles from re-entering the inlet and outlet chambers.

From the above description, in the case of this device based on qK, the shape and arrangement of Niremen) 10J not only reduces the occupied space and wasted space of the casing, but also allows the granular F material to be introduced from the upper inner ridge of the transit unit. Therefore, it is easy to charge the furnace material. A) Before the P material is discharged from the lower inner ridge of the temporary enit, it is easy to discharge the furnace material, and furthermore, dust removal when charging the F material is effective. It is clear that only 4 h% of the filter bed is carried out to ensure good uniformity of the filter bed and discharge of residual dust during discharge of the F material.

It goes without saying that various modifications can be made to the embodiments described above and shown in the accompanying drawings without departing from the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a side view of the transit device according to this invention. FIG. 2 is a partial sectional view taken along line 1-U in FIG. 1. FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2. Figure 2 is a schematic perspective view of the filtration unit with a portion cut away to show the arrangement of the filtration bed inside the jacket. FIG. 5 is a partial perspective view of the top of the filtration device according to the invention, cut at the axial center to show the charging chute. 100... Cylindrical casing, 10/... Filtration unit. 10 pieces - Hollow element, IO3 - Frame, 1
0#a. 1 opb - two parallel faces (of the element), io
n...jacket, tot, toy...window section, 10
1-Transitional bed. 10 ter/granular P material supply slit, /10... chute, / / /-... supply hole, //Ja, //Jb
=perforated ramp, ll#...upper chamber, //! -・Lower chamber, //1...perforated wall. Nozzle, l roller...discharge shoe), /J7-...discharge contact s' pipe. ...Exit chamber, NoJbu...Vibration device.

Claims (1)

[Claims] t casing (ioo) 6 charging compartment (/10
) and a discharge compartment (/JJ), and an assembly of nine hollow elmmen) (10J) spaced apart from each other, (81/) are arranged, and each of the above-mentioned elements (10 h) is a frame part (107) and two parallel surfaces (10
The space between two adjacent niremen) (#) J) receives the P material and forms a temporary bed through which the purifying sliding fluid flows. in the device in which the frame portion (107) has a rhombic shape);
The elmmen) (#lJ) are arranged in a row and arranged so that one of the diagonals (D) of the rhombus is horizontal, and corresponds to the shape of the frame (107). It is characterized in that a jacket (101) in the form of a parallel macrohedron with a rhombic cross-section surrounds the aggregate of the above-mentioned Niremen (10J). A device that passes contaminated fluid through particulate material that is capable of adsorbing and/or absorbing contaminants. 1 The casing (100) has an inner cylindrical shape, and the frame (BIB) and jacket (/121) of the elements (10) have a square cross-sectional shape. ) is Keishin! (tap) o Coaxial kf with casing inside! Claim II No. 1, characterized in that the square cross section of the one-ton crystal cut that has been fed is inscribed in the casing (/110) 0 circular section.
1 [Apparatus described in K. 1 The cylindrical casing (#0) has shaped end plates (/
The apparatus according to claim 1, characterized in that the casing (/#) is arranged such that its axis xxI is inclined about 11" with respect to the horizontal. The device according to claim 1, characterized in that: (10J) 'O each is that O frame <101) O leg lit jb J tsut) Kl (/
#Jm, /#Jb) K has an affected area (104), and the affected area of the fin faces a corresponding opening (#7) in the jacket (101), and the fluid to be purified is The device according to claim 1, wherein the paper can be drawn in and out through the affected area and the opening. The jacket (101) includes supply slits (10) at the top and one discharge slit (10) at the bottom, and these slits each contain two filtration slots (10) at the bottom.
a charging chute (l10) which is arranged along the upper and lower corner edges of the slits (10/) and whose front charging and discharge compartments respectively communicate with these slits (10/); and a discharge chute (/1t)K.
The equipment described in section. 2. The charging shade (l10) includes a feed hole (///) which is fed by pneumatic pressure and receives the 9P material through a distribution device (/J0), and furthermore, the feed hole (///
) penetrates through the dust removal chamber (//) at the top and a snake branch chamber (/#) at the bottom that communicates with the above-mentioned iron slit (10). ) and distribution room (
//! Device according to claim #Ij, characterized in that r) is separated by a perforated wall (/#)K. l said distribution device (l) has a regulating tube (/J/) which communicates with the supply hole (///) via a concentric nozzle (/here) and is arranged at the end of said regulating tube and said nozzle; 8. The device according to claim 7, characterized in that the distribution chamber (iiz) is located below the feed hole (///) and in the charging hole (///). The dihedral furnace material distribution member (//7) placed above the charging slit (10) and the compressed air blowing ramp (//7) placed on both sides of the charging slit (//7).
/Ja, //Jb). /a said discharge slit (/JJ) is the discharge slit (
l21) located on both sides of) and said elmmen)
(#)J) surface (10#m, IO axis)
, , Ra, /Jrb) according to claim 4.