EP0951930A1 - Procédé et appareil pour séparer des solides d'une suspension - Google Patents

Procédé et appareil pour séparer des solides d'une suspension Download PDF

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Publication number
EP0951930A1
EP0951930A1 EP98107444A EP98107444A EP0951930A1 EP 0951930 A1 EP0951930 A1 EP 0951930A1 EP 98107444 A EP98107444 A EP 98107444A EP 98107444 A EP98107444 A EP 98107444A EP 0951930 A1 EP0951930 A1 EP 0951930A1
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EP
European Patent Office
Prior art keywords
filter
filter device
chamber
press
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98107444A
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German (de)
English (en)
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EP0951930B1 (fr
Inventor
Dieter Kupka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baukooperation GmbH
Original Assignee
Baukooperation GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baukooperation GmbH filed Critical Baukooperation GmbH
Priority to DE59811639T priority Critical patent/DE59811639D1/de
Priority to AT98107444T priority patent/ATE270135T1/de
Priority to EP98107444A priority patent/EP0951930B1/fr
Priority to AU38227/99A priority patent/AU745848B2/en
Priority to US09/446,621 priority patent/US6419842B1/en
Priority to PCT/EP1999/002787 priority patent/WO1999055441A1/fr
Publication of EP0951930A1 publication Critical patent/EP0951930A1/fr
Application granted granted Critical
Publication of EP0951930B1 publication Critical patent/EP0951930B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00

Definitions

  • the most common method for separating solids from a cloudiness consists in filtering the cloudiness with the help of more or less fine-pored filter media.
  • a major disadvantage this method is that the pores of the filter media add relatively quickly with solid particles from the slurry, so that a significant hydrostatic pressure is applied to the slurry in order to get any liquid through the To get filter media through. That hydrostatic pressure in turn leads to the fact that the particles are only firmer in the Pores of the filter medium are pressed, reducing the filter performance is deteriorated further.
  • the invention has for its object a method and to specify a plant with which a separation of solids from a turbidity in continuous or quasi-continuous Operation is possible and with increased performance can be achieved without a high hydrostatic on the turbidity Pressure must be applied.
  • the slurry is in a filter device just thickened. This makes it possible to remove the turbidity during the entire treatment process in the filter device used for this so keep moving that due to the cross to the surfaces of the filter media sedimentation of solid particles on the surfaces of the Filter media completely or almost completely prevented becomes. Therefore, the differential pressure across the filter media becomes small held.
  • the speed of the cross flow is preferably used the turbidity is particularly high.
  • a further development of the invention is a pump flow in the slurry generates that not only at a high cross-flow velocity leads, but in the cloudy on the filter membranes generates such a high back pressure that the differential pressure of the membranes is overcome without the need to put the turbidity under a hydrostatic pressure.
  • this concentrated slurry is pressed out mechanically. To for this purpose, it is first subtracted from the filtering process.
  • the concentrated slurry can be conditioned with a supplement to favor the squeezing process, for example using lime milk to produce flocculation.
  • the subsequent mechanical squeezing process is not a filtering process, but is only intended for the rough drainage of the concentrated Serve cloudy. Accordingly, the drain is off the squeezing process is not particle-free and is therefore in the Filtering process returned.
  • the press cake created by the mechanical pressing process is then mechanically crushed, and the resulting ones Agglomerates can be in a swirling state if desired be held by removing the residual moisture from them.
  • This drying process can be caused by negative pressure or accelerated by heat.
  • Can also be on the swirling Particles are exposed to ultraviolet radiation to kill any germs that may be present.
  • a filter device can be used to carry out the method larger capacity several squeezers of smaller capacity are assigned so that the filter device is quasi-continuous loaded with fresh slurry and from particle concentrate can be freed, the squeezing devices, preferably press dryer, staggered for use reach.
  • the degree of solid particle concentration reached in the filter device can for example by optical devices, that detect the translucency of the cloudy, or by measuring the drive power that is required to to keep the turbidity in the filter device in motion, be determined.
  • Operation is particularly economical if the Dry the heating of the particles in the vortex chamber Process waste heat occurs, for example, that during the filtering process due to internal friction in the turbidity and transfers to the filtrate. You can then namely the filtrate for heating the particles in a swirl chamber in the Way that you can use it to cover the walls of the vortex chamber heats.
  • This filtrate can be used before or after Heat can be conditioned, for example adjusted in pH are used to protect the apparatus and the environment to be able to.
  • the system for separating solids from a slurry 1 consists essentially of a designated 1 Filter device and a press dryer designated by 2, connected to each other by a slurry transfer line 3a and a waste water return line 3b are connected to each other.
  • the filter device 1 consists of FIGS. 1 and 9 a boiler 4 consisting of an upper shell 4o and a lower one Shell 4u, which is approximately in the middle of the boiler 4 with the help of the damage formed upper and lower flanges 5o or 5u are releasably connected to each other.
  • the end walls 6o and 6u of the boiler 4 are arched lenticular.
  • the diameter of the Boiler 4 is approximately 1.3 times the height of the jacket sections of the shells 4o and 4u.
  • the a filter element group is assigned to the upper shell 4o and contains filter elements, which are designed here as filter candles 7o are on a circle on an upper support structure 8o are attached.
  • the upper support structure 8o is on an upper one Hollow shaft 9o attached to the upper end wall 6o Shell 4o penetrates and is rotated by an upper motor 10o is relocatable.
  • On the upper hollow shaft 9o are adjacent upper end wall 6o also the blades 11o of an upper turbine attached, which belong to the upper support structure 8o.
  • a lower filter element group is comparable to the lower shell 4u assigned, consisting of filter elements that filter candles 7u also in the exemplary embodiment shown are different on two concentric circles Diameters are arranged and of a lower supporting structure 8u are held, which are attached to a lower hollow shaft 9u is.
  • the lower hollow shaft 9u penetrates the lower end wall 6u of the housing shell 4u and is from a lower motor 10u driven opposite to the direction of rotation of the upper hollow shaft 9o.
  • On the lower hollow shaft 9u are close to the lower one End wall 6u also the blades 11u of a lower turbine attached, which belong to the lower support structure 8u.
  • the circle of filter cartridges 7o of the upper filter element group is the lower between the two circles of the filter cartridges 7u Filter element group arranged.
  • the slurry chamber is via a feed line 12 and a pump 13 14 in the boiler 4, in which the filter element groups and their supports are, with a cloudiness from one Storage container 15 can be loaded.
  • a feed line 12 and a pump 13 14 in the boiler 4 in which the filter element groups and their supports are, with a cloudiness from one Storage container 15 can be loaded.
  • the sludge transfer line 3 leading out of the boiler 4 leads to the press dryer 2, specifically into a press chamber 16 at the head of the press dryer 2.
  • a swirl chamber 17 in which a rotor provided with a plurality of vanes 18 rotates, which is driven by one outside of the swirl chamber 17, the motor is flanged to the shaft 19 of the rotor.
  • a spur line 3c opens into the sludge transfer line 3a, through which a conditioning medium can be fed via a slide, which is symbolized here with K 1 and improves the squeezeability of the thickened sludge.
  • the medium can be milk of lime, which causes the turbidity components to flocculate.
  • the press dryer 2 is formed by a boiler 21 from an upper part 21o and a lower part 21u, the flanges are interconnected.
  • the press chamber 16 is of the Vortex chamber 17 separated by a transverse wall 22, the one has smaller outer diameter than the inner diameter of the Upper part is 21o. Details will be explained later. From the Press chamber 16 lead two drainage lines 23 to the outside, that open into the return line 3b. The latter is with the Slurry feed line 12 connected upstream of the pump 13.
  • the press chamber 16 is above the swirl chamber 17 arranged and by this through the transverse wall 22nd Cut.
  • the bale chamber 16 is upward from one Bell limited 24, which has a lower edge 25 which in 2a shown an annular gap 26 (see Fig. 2c) between the peripheral edge of the transverse wall 22 and the Inner wall of the upper part 21o of the boiler 21 closes.
  • the bell 24 is axial by means of a hydraulic cylinder 27 Adjustable direction and thus acts as a plunger.
  • the bell 24 assumes a position in which the Space of those enclosed by it together with the transverse wall 22 Bale chamber 16 is maximum and the bale chamber 16 is closed is. This is the filling position in which the bale chamber 16 through the transfer line 3a with a concentrated slurry can be filled from the filter device 1.
  • the transverse wall 22 enters on its upper side Sieve 28, under which there is a dewatering chamber 29, which drains to the outside through one of the outlet lines 23 is.
  • Another is located parallel to the base 30 of the bell 24 Sieve 31, which together with the bubble cap 30, a drainage chamber 32 limited by the other outlet line 23 is drained towards the return line 4.
  • the swirl chamber 17 is provided with an outlet line 36, to a moisture separator 37 and a vacuum source (not shown) leads.
  • the bottom part is on the floor 21u of the boiler 21 is provided with an outlet flap 38, which means of a hydraulic actuator can be opened.
  • Fig. 1 shows the open position
  • Fig. 2c the closed Position.
  • Some of the wings 18 are provided with wall scrapers 46, which touch the inner wall of the lower part 21u of the boiler 21, the detection areas of these wall scrapers 46 each other overlap. Solids caking can thus be achieved by rotating the vanes 18 Avoid on the inside wall of the lower part of the boiler 21u. Adjacent to the bottom of the lower boiler part 21u is on the shaft 19 has a clearer 40 attached to it when emptying the Vortex chamber 17, the dried solid particles in the Clear flap 38 open outlet. Under this outlet there is a collecting bag 41 (see Fig. 1).
  • the lower part of the boiler 21u on a double wall and according to Fig. 1 is the space the double wall of inlet and outlet lines 42 and 43 connected.
  • the feed line 42 leads the heated filtrate out of the filter device 1, possibly via a reheater 44 can still be heated if the temperature increase, which the filtrate experiences through the filtering process for the heating of the lower part of the boiler 21u should not be sufficient.
  • a conditioning medium can be fed into the drain line 43 via a spur line and a slide, which is symbolized here with K 2 and serves, for example, to adjust the pH value of the filtrate before it is released to the outside.
  • the filter device 1 is switched off via the pump 13 the reservoir 15 supplied with slurry.
  • the pump 13 fills the boiler 4 completely with turbidity and keeps the turbidity under a predetermined pressure. It constantly carries so much cloud volume according to how the filtrate flows out through the filter elements 7o and 7u escapes from the slurry chamber 14. If a predetermined solids concentration in the slurry chamber 14 is achieved, for example by means of optical means (not shown) or by measuring the energy consumption of the Drive motors 10o and 10u can be detected, one in the sludge transfer line 3a arranged valve 45 opened and the Press chamber 16 in the position shown in Fig. 2a with a concentrated Cloudy filled. The removal of the concentrated Turbidity from the turbidity chamber 14 is due to the constant subsequent delivery ensured of new turbidity by means of the pump 13. in the Press dryer 2 then takes place the processing already described the concentrated cloudiness.
  • the processing capacity of the press dryer is expedient adapted to that of the filter device so that none of the aggregates involved in the process idle times surrender.
  • a filter device larger capacity several smaller press dryers assign or vice versa a press dryer of larger capacity assign several smaller filter devices.
  • the aim is that the filter device is not as strong Concentration of the solids takes place that the risk of a Clogging of the pores of the filter elements arises because of the Turbidity can no longer be kept sufficiently in motion, and that, on the other hand, that achieved in the filter device Solids concentration of the slurry is sufficiently high that in Press dryer economic work is possible, m.W. a mechanical squeezing of those introduced into the press dryer Hazy is worthwhile and gives acceptable results.
  • an important aspect of the invention is that in the press dryer no actual filtering process takes place and therefore the many difficulties that filtering operations pose there are not present a priori, but contain solid residues, So still impure liquid, from the concentrated Turbidity is mechanically squeezed out, which is returned to the filter process becomes.
  • the characteristics of the Press dryer also independently, i.e. detached from the characteristics the filter device, inventive meaning and property have and the press dryer as an apparatus with others Filter devices, as shown here, is operable. Corresponding conversely applies to the filter device.
  • FIG. 3 shows in Detail of a cross-sectional representation of the filter device 1 in a radial section plane above the flange 50. Only three filter element subgroups are shown, but it goes without saying that a large variety of such filter element sub-groups in a uniform Distribution is attached.
  • 3 and 6 are three filter candles on each foot bracket 49 7u attached with their foot sections. That of a foot console 49 associated filter cartridges 7u form a filter cartridge sub-group.
  • the filter cartridges 7u have in the example shown in FIG. 4 mounting spigots 50 arranged eccentrically to the candle axis a constriction 51, to which a widespread at the free end Foot 52 connects.
  • Each foot 52 sits in a bore 53 of the Console 49, which according to FIG. 6 is open towards the edge of the console Has slot 54, the width of the diameter of the constriction 51 corresponds.
  • Dewr slot 54 facilitates assembly and disassembly of the filter cartridge.
  • the filter cartridges 7u are at the other, i.e. upper End provided with a tubular screw socket 55, the is coaxial with the foot-side mounting piece 50.
  • a tubular screw socket 55 has a hexagon 56 and is in one of three threaded holes in a hollow triangular in outline Screwed head console 57.
  • the head console 57 is attached to an annular tube 58, the Diameter corresponds to that of the carrier on which the foot console the relevant filter cartridge subassembly is attached. Therefore there are two ring tubes 58.59 of different diameters.
  • the Ring tubes 58 and 59 are substantially parallel by several to the axis of the boiler 4 extending supports 60 with the associated carriers 47 and 48 connected. 60 of these supports is at least one hollow and one end with the interior of the associated ring tube 58 and 59 connected. Another day is the interior of the hollow support 60 via a connecting pipe 60 and 62 (see FIGS. 1 and 10) with the cavity of the lower hollow shaft 9u connected.
  • These connecting pipes 61 and 62 can be integrated in the lower support structure 8u.
  • the lower hollow shaft 9u is in the lower end wall 6u of the Boiler 4 stored sealed.
  • a corresponding construction is the upper shell 6o Boiler 4 assigned.
  • the upper hollow shaft 9o carries the upper one Support structure 8o with an associated annular support 63, which has a diameter that is between the diameters the lower support 47 and 48 is located.
  • a Ring tube 64 is arranged, which by means of axially parallel supports 65 is connected to the carrier 63, at least one of which is hollow is.
  • the filter candles 7u completely comparable way, however overturned, are between the carrier 63 and the Ring tube 64, the filter cartridges 7o with the help of head and foot brackets assembled.
  • the head console can be seen in FIG. 3 and there designated 67.
  • the one consisting of the filter candles 7u rotates Subgroup counterclockwise around the one already specified Axis (not shown).
  • the incoming flow with cloudy the direction of rotation is according to arrow S5 and off the center of the boiler due to the effect already mentioned the turbines in the direction of arrow S6, where in turn the gap between the flowed filter cartridges 7u set wider is than that for flow S5.
  • the one between the filter candles Incoming turbidity leaves the area of this filter candle sub-group according to the flow S7 radially outwards in the space that defines between the filter element groups and designated Z in Fig. 7. There is the subgroup from the filter candles 7u tangential to the flow S8 flowed towards.
  • Fig. 7 shows very clearly that by the eccentric bracket the filter elements by twisting them on their holding
  • the consoles are changed in their mutual distance can, so that optimizations depending on the each slurry to be processed, the circulation speed, the Pressure, etc. can be achieved.
  • FIG. 8 shows an example of an embodiment in which on both the lower and the upper support structure two wreaths of filter candles, each in sub-groups are arranged, are attached. Since those shown in Fig. 8 Components with the reference numerals used so far can be referred to a detailed explanation the same are dispensed with here.
  • brackets for the bracket of the filter candles not to those in FIGS. 3, 5 and 7 shown triangular shape is limited.
  • the brackets are rather elongated slim and hold 6 filter cartridges in a sub-group, which in turn are pivotally mounted on the consoles in order to to be able to adjust the mutual surface distances.
  • FIG. 12a shows the filter device 1 with a on a column swiveling and height-adjustable lifting device in the closed state of the boiler.
  • the lifting device is then lowered until that with another, trained on it boom A lower filter cartridge group 7u can be gripped.
  • the upper filter candle group 7o is placed on a table. After removing the upper filter cartridge group from it Support structure can be removed from the work area. This state is shown in Fig. 12e.
  • the assembly is done in reverse order.
  • the upper support structure 8o is on a pot 68 attached, which is pushed from below onto the upper hollow shaft 9o is and on this with the help of a single, centric Bolt 69 is attached.
  • the pot 68 has one Connection 70 for the connecting line 66, which with a Cross bore 71 in the hollow shaft 9o is aligned to the connecting line 66 to connect to the interior of the hollow shaft 9o. After loosening the single screw bolt 69, the Pot 68 with the supporting structure 8o attached to it from the hollow shaft 9o solve.
  • the Filter device can be used for a wide variety of purposes to make and accordingly the gap widths between To be able to adjust neighboring filter cartridges is according to the Invention provided a holder of the filter candle on their consoles, which it allows by twisting in on the consoles trained holes the surface distance of the filter cartridges to change within the subgroup. In the simplest way this can be accomplished if the assembly spigot and Screw connectors of the filter cartridges attached asymmetrically to these as shown in FIG. 5.
  • FIG. 13 For the adjustable assembly described above of filter cartridges, which has central holders according to an embodiment of the invention shown in FIG. 13 is for mounting the filter cartridges on the brackets specified a solution using cranked connectors.
  • a connecting member corresponding to the mounting piece 50 of FIG. 6 72 is attached to a perforated flange ring by means of a bolt screwed to the ring-shaped carrier 63 is attached, while the screw socket 55 of FIG. 5th corresponding connector 73 is hollow and ends in one a hole in the filter cartridge is inserted and at the other end has a stuffing box connection 74 with a union nut 75.
  • the head console is included matching threaded connector must be provided.
  • FIG. 14 looks lateral connections at the foot and head of the filter candle 7o or 7u in front.
  • the head of the filter candle is at an angle Ring tube 64 screwed, and an angular is on the side of the head Connection fitting 73, which is comparable to the Embodiment according to FIG. 13 in an opening in the ring tube Stuffing box connection 74 ends and a union nut 75 carries.
  • the slit widths are caused in the cloudy between the filter cartridges of a sub-group set larger, than the filter candles, which are radially further out are arranged.
  • the hollow shafts with the support structures attached to them including the turbines and the filter candles are each other driven in opposite directions to avoid that a Movement is caused, the filter candles more or follows less evenly, so that there is no relative movement between would give the filter candles. It is also advantageous if baffle 76 on the inner wall of the boiler jacket (see Fig. 3) are formed, one with the rotating filter candles disturb the accompanying flow of the turbidity and thus to turbulence contribute within the filter device.
  • the gap widths between the filter candles of neighboring subgroups can be. This requires the consoles to be on their carriers or ring tubes are attached so that they are in different Angular positions are brought and fastened in this can.
  • FIG. 15 shows such a solution in which the head console 57 carries a threaded connector 77, in which a fixed to the ring tube 58, immerses a cone 79 carrying a worm nut 78, which is sealed in the threaded connector 77 by an O-ring 80 is.
  • the head console can be loosened by loosening the union nut 78 57 to any angular position and then through Tighten the union nut 78.
  • the associated foot bracket 49 must be rotatable accordingly.
  • Fig. 5 shows that the Foot bracket 49 by means of a threaded bolt 81 on the support 74 it is determined that they are rotated to any angular position can be.
  • FIG Filter candles 16a to 23 show different embodiments of FIG Filter candles from the side and in cross section.
  • Allen is common that the connections are arranged eccentrically are.
  • the connections could also be in the candle axis be arranged, the remaining shape of the candle not affected by this.
  • the filter candle has several on its circumference helical grooves 82, from elongated bores 83 in the Guide the interior of the filter candle.
  • the filter candle is for that determined to be coated by a filter medium which in 16a is not shown.
  • This filter medium is a rectangular cloth with its axially parallel edges in a groove 84 the filter candle are to be inserted, the surface parallel to the axis the filter candle is formed. After inserting the Edges of the filter cloth in the groove, the groove is replaced by a Filler closed on the edges of the filter cloth presses.
  • 16a, 16b is the jacket wall the filter candle is relatively thin-walled because it is only by comparison few holes 83 is weakened.
  • the filter candle has a plurality of slots 90, which run parallel to the axis.
  • the jacket wall compared to the embodiment 16a, 16b made thicker, as a comparison 17b and 16b.
  • the filter candle body is relatively solid, he has a comparative small cavity inside, in which a variety of Slits 90 open, the filtrate under the filter cloth (not shown) from the surface of the filter candle.
  • FIG. 19 shows various embodiments until 23.
  • the head part 91 of a filter candle can be recognized in FIG. 19 which is a substantially cylindrical sieve 92 as a carrier for a filter cloth 93 is attached.
  • the filter cloth 93 is for example a stocking, over the one located on the head part 91 End of an elastomer bandage 94 is pulled, which means metal clamps 95 is fixed.
  • An additional Sealing with adhesive or sealing compounds is possible.
  • 21 is a plastic cap 97 over the head part 91 of the filter candle and the one located there Edge area of the filter cloth 93 turned over. Is frontal the plastic coupling 97 held by a clamping nut 98 and sealed by an elastomer washer 99. It is radial Plastic cap 97 through an adhesive and sealant in one Sealed annular gap 100, the over the edge of the filter cloth 93rd lies and to which an inlet bore 101 and a diametrical lead opposite outlet bore 102 through which the adhesive and Sealant can be injected into the annular gap 100. A clamp 95 serves to additionally secure the Plastic cap 97.
  • the head part 91 is included the sieve 92 and filter cloth 93 from one attached metal support ring 103 surrounded between and the circumference the head part 91 and the edge region of the filter cloth 93 itself there is an inflatable body 104, the interior 105 of which via a externally led connection piece 106 pneumatic or can be hydraulically pressurized.
  • the inflatable body is supported on the metal support ring 103 and presses the Edge area of the filter cloth 92 against the head part 91 of the filter candle.
  • a seal with adhesive or Sealants possible.
  • FIG. 23 shows a two-part metal cap 103a and 103b with thread, which over the head part 91 of the Filter candle are put up and there comparable to the embodiment 21 secured with tension nut 98 and elastomer ring 99 is sealed.
  • the two parts 103a and 103b of the metal cap are screwed together, and in between are shown in the Example two elastomer rings 107, which are screwed together the clamping rings between these are pressed wide and one Form a seal or against the edge region of the filter cloth 93 to press. Additional sealing with adhesive or sealing compounds is also possible in this embodiment.
  • boiler 204 does not consist of two Parts, as shown in Fig. 1, but from three parts, and an upper head shell 204o, a lower head shell 204u and a cylindrical one arranged between them Shell part 204m, the flanges 205o and 205u with the upper and lower head shells 204o and 204u.
  • FIG. 25 shows an embodiment of the filter device, at the filter elements are not made of cylindrical filter cartridges exist, as in the previously explained embodiments, but from a stack on a common support tube with mutual Distance between filter disks 307o and 307u.
  • the the Support tubes holding the filter discs 308o and 308u are comparable the previous examples of consoles held, which in turn on the ring tubes already described are attached. In this regard, avoid repetitions a detailed explanation is dispensed with, however, the filter discs deserve a precise description. This is to be given with reference to FIGS. 27 and 28.
  • FIG. 26 A schematic radial sectional view of the filter element arrangement 25 with one part within the filter device of FIG the supporting structure is shown in FIG. 26.
  • Each filter element consists of a stack of filter discs, 27 of which two filter disks 307o are shown are.
  • the filter disks 307o of a stack are of one Support tube 308o held, with spacers 309 and sealing rings 310 are inserted, the adjacent filter disks 307o keep at a distance.
  • the filter discs 307o have each have a hollow interior 311 (see also FIG. 27) on, which by at least one associated breakthrough 312 in Support tube 308o is drained into this.
  • the support tubes are at one end over the support bracket holding them completely comparable to the filter candles already described dewatered, see also Fig. 27, upper section of the Drawing.
  • the embodiment 28 shows a possible embodiment of the interior Construction of the filter discs 307o or 307u.
  • the embodiment 28 shows two close-meshed lattice structures 313 from a coarse-mesh lattice structure 314 to one another Kept clear.
  • the close-meshed lattice structures 313 are covered on their surface by filter cloths 316, the edge the filter disc on an axially separable clamping ring 315, 317 are held under clamping of O-rings 318.
  • the Parts 315 and 317 of the clamping ring have an elastic circumferential closure on to the clamping ring to exchange the To be able to open filter cloths 316.
  • Near the support tube 308o or 308u are the filter cloths 316 due to the O-rings already mentioned 310 captured and sealed.
  • a rigid, porous, disc-shaped hollow body are used on the edge the filter cloths are fixed by a potting compound that a cavity between a ring and the edge of the hollow body fills out. It is also possible to form the filter cloth in one piece, so that the top and bottom of a rigid, porous, disc-shaped hollow body covers, so that an attachment of the filter cloth only in the area of the support tube is.
  • the construction with filter discs has the advantage that a Sub-group filter elements so close together can be mounted that in the presence of a mutual axial offset the filter discs of the one filter element into the gaps between the filter disks penetrate the adjacent filter cartridge. This is in FIG. 25 and 26 clearly recognizable.
  • FIG. 29b shows, by twisting of the brackets on their supporting structure and - because of the cranking of the Holding the ends of the support tubes 309o or 309u - by twisting the filter elements on their brackets the distance the filter element groups have to change from each other.
  • the Fig. 29b shows solid lines an arrangement that one wide space Z results, and in dashed lines Lines an arrangement that a narrow space z to Consequence. You can also in the circumferential direction of the space seen alternating distances to provide the pulsation effect within the cloudiness that runs through the mutual of the filter element groups results to vary, in particular to reinforce.
  • Fig. 26 also shows that the very narrow filter elements, quasi interpenetrating, together each form a kind of cage, except for the gaps between the filter discs is closed on its circumference.
  • This pressure difference creates a dynamic pressure on the filter discs, which the filtrate (permeate) pushes through the membranes without requiring to put the turbidity under a hydrostatic pressure. This applies accordingly to embodiments with cylindrical Filter cartridges.
  • FIG. 30 A variant of the embodiment of FIGS. 25 to 28 is shown in FIG Fig. 30 shown.
  • the filter discs 307o and 307u each at an angle of inclination with respect to the axis of the respective support tube 308o or 308u, respectively with alternating positive and negative angles of inclination, whereby these angles of inclination all with respect to a common one Axial plane are defined.
  • the one on both sides of a filter disc neighboring filter disks are thus mutually exclusive parallel.
  • angles of inclination can be selected differently. she are in the illustrated embodiment for the filter discs 307u, which are closer to the axis of rotation (not shown) larger, i.e. deviate more from the perpendicular to the support tube axis Arrangement from than the distant axis Filter discs 307o. This will make the different Radial components within the turbid flow caused by the Turbines (not shown) are invoiced carried.
  • the filter elements of a subgroup can be used as for Example of Fig. 25 can be arranged so that the filter discs two filter elements overlap each other, the arrangement is taken so that it can be seen from the pipe axis mutually approaching sections of second upstream filter disks a filter candle in the space between those seen from the pipe axis that are distant from each other Sections of two filter discs of the neighboring, downstream Immerse the filter candle.
  • Fig. 30 this is very much illustrated clearly. This creates a nozzle effect generates the turbidity in the column that downstream located filter discs with the upstream Form filter discs. Upstream they are radially wider internally arranged filter cartridges, while the downstream are filter candles arranged radially further outward.
  • the orientation of the openings, each two filter discs form, can be such that these are directed into the circulation center are, but you can also choose the orientation so that the through the circulation of the filter element groups around the circulation center generated inflow with turbidity in the narrowing gap occurs between two filter disks, i.e. the filter discs are twisted in relation to the aforementioned orientation.
  • the Choice of setting depends on the type of turbidity and the circulation speeds of the filter element groups determined thereby and the strength of the pump flow.
  • FIG. 31 Another variant is shown in FIG. 31.
  • 31 are on a support tube 508 radially protruding holding tubes 506 attached via connection brackets 573.
  • On every holding tube 506 is a packet of filter disks arranged parallel to one another 507 attached, in the manner of the filter disks of FIG. 27 and 28 can be executed. Comparable to the embodiment 27, these filter disks 507 are at a distance held and sealed to the holding tube 506.
  • the filter discs 507 are over the support tubes 506 and connection brackets 573 drained into the support tube 508, which in turn over the Support structure is drained.
  • a middle support tube rotates in the axis of rotation of the support structure, the other support tubes run on circular orbits around this axis.
  • the holding tubes can be Adjust 506 on the support tubes 508 so that two neighboring ones Filter element pairs, each consisting of two packets of filter discs 507 exist on their associated support tubes 506, in mutual Distance can be changed. It is also possible to provide the individual packages with cranked feet and heads. Then the two packages of a pair can be in mutual Distance can be adjusted.
  • FIGS. 32 to 34 it is to be shown how a Plant according to the invention for performing the method to save space be housed in an enclosing housing can.
  • FIG. 32 shows the front side of the housing 108 with viewing windows 109 and a display and control panel 110.
  • Fig. 33 shows the housing from the side in the open state. one recognizes the filter device 1 and press dryer 2 existing system.
  • the press dryer 2 shows a view into the housing 108 from above. Laterally and offset relative to the filter device 1 relative to the front Large volume, the press dryer 2 is relatively small Volume, and you can also see boxes 111 that the Inclusion of electrical and electronic switching and control equipment to serve.
  • the completely new filter element designs specified by the invention 25-34 allow filtering devices to realize that without a hydrostatic Pressure are operational as that is for filtering a slurry required pressure drop across the filter media only through the flows caused by the movement of the filter elements is produced.
  • a filter device 35 and 36 possible a filter unit with moving Filter elements in an open tank or pit or The like. Immerse and without pressurizing the cloudy or external negative pressure generation on the filtrate side a pressure difference build up on the filter media that is sufficient to to generate a filtering process. It is through the to the Cross-flow prevailing filter media prevents the Fill the pores of the filter media early with solid particles.
  • the 35 consists of a central one Hollow shaft 601, which is rotatably mounted on an upper support beam 602 is.
  • an upper cross member 603 is rotatably mounted on the hollow shaft 601, which has its own hydraulic drive 604.
  • the upper Cross member carries several first filter element sub-groups, which are arranged on at least one annulus and each of several, extending parallel to the hollow shaft 601 Filter elements exist that are constructed in the manner of FIG. 30 are, i.e. they each consist of a stack of filter disks 607, which alternate positive and negative directions are inclined with respect to a support tube 608 holding them.
  • the Support tubes of a filter element sub-group are on their upper one End connected to a common head console 606, the is attached to the upper cross member 603.
  • the foot brackets 609 are hollow and stand with the interiors of those attached to them Support tubes 608 in fluid communication.
  • the foot brackets 609 are on a common ring tube 664 appropriate.
  • the interior of this ring tube 664 is over a Connecting pipe 666 connected to an upper bearing bush 610, to which the upper cross member 603 is attached and that of the hydraulic drive 604 can be driven.
  • Over the bearing bush 610 and a rotary coupling are the interior of all filter disks 607 connected to a common outlet 642.
  • the upper cross member 603 is provided with turbine blades, which when the upper cross member rotates one axially downwards cause directed flow in the turbidity into which the filter unit is immersed, see Fig. 36 above.
  • a lower cross member 611 non-rotatably attached. This carries several second filter element sub-groups, which on at least a second, to are arranged first concentric annulus and each a plurality of filter elements extending parallel to the hollow shaft 601 exist, which are also constructed in the manner of FIG. 30 are.
  • the second annulus has larger ones in the example shown Diameter than the first annulus, and the angles that Adjacent filter disks of the filter elements concerned between include themselves are smaller than the corresponding ones Angle between the filter disks at the filter elements that are arranged on the first annulus.
  • the interior of the ring tube 648 is at least via a connecting tube 660 in the area of the mounting location of the lower Cross member 611 connected to the interior of the hollow shaft 601, the one at the top of the same on a rotary coupling 613 Has outlet 614.
  • the lower cross member 611 is also provided with turbine blades, which when the lower cross member 611 rotates axially cause upward flow in the turbidity into which the filter unit is immersed, cf. Fig. 36 below.
  • the Hollow shaft 601 has its own drive that turns it around a direction opposite to the upper cross member in Rotation offset.
  • the filter elements too 27 and 28 can be constructed, which in Fig. 35 to the left of the hollow shaft is indicated schematically. Also can then be the distance between the Filter elements in the manner of FIGS. 25 to 29 can be selected.
  • the generated currents call up back pressure at the filter media that result in filtrate in the filter elements entry. Because the filter elements of the different groups of filter elements approach each other cyclically and away from each other, pulsations occur in the Flow, which is a settling of solids at the back pressure affected areas of the filter media can be prevented.
  • the thickened by the filter device according to FIGS. 35 and 36 Turbid can then be processed in a press dryer in other words, the device according to FIG. 35 and 36 can be combined to form a system comparable to FIG. 1, however, other processing options are also available thickened cloudy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)
  • Paper (AREA)
  • Saccharide Compounds (AREA)
  • Drying Of Solid Materials (AREA)
EP98107444A 1998-04-23 1998-04-23 Procédé et appareil pour séparer des solides d'une suspension Expired - Lifetime EP0951930B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59811639T DE59811639D1 (de) 1998-04-23 1998-04-23 Anlage zum Abrennen von Feststoffanteilen aus einer Trübe
AT98107444T ATE270135T1 (de) 1998-04-23 1998-04-23 Anlage zum abrennen von feststoffanteilen aus einer trübe
EP98107444A EP0951930B1 (fr) 1998-04-23 1998-04-23 Procédé et appareil pour séparer des solides d'une suspension
AU38227/99A AU745848B2 (en) 1998-04-23 1999-04-23 Method and device for separating solid particles from a slurry
US09/446,621 US6419842B1 (en) 1998-04-23 1999-04-23 Method and installation for separating solids contents from a pulp
PCT/EP1999/002787 WO1999055441A1 (fr) 1998-04-23 1999-04-23 Procede et installation pour separer des particules solides dans un milieu dense

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98107444A EP0951930B1 (fr) 1998-04-23 1998-04-23 Procédé et appareil pour séparer des solides d'une suspension

Publications (2)

Publication Number Publication Date
EP0951930A1 true EP0951930A1 (fr) 1999-10-27
EP0951930B1 EP0951930B1 (fr) 2004-06-30

Family

ID=8231812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107444A Expired - Lifetime EP0951930B1 (fr) 1998-04-23 1998-04-23 Procédé et appareil pour séparer des solides d'une suspension

Country Status (6)

Country Link
US (1) US6419842B1 (fr)
EP (1) EP0951930B1 (fr)
AT (1) ATE270135T1 (fr)
AU (1) AU745848B2 (fr)
DE (1) DE59811639D1 (fr)
WO (1) WO1999055441A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081053A1 (fr) * 2001-04-04 2002-10-17 Fraunhofer-Gesellschaft Zur Förderung Der Angewan Dten Forschung E.V. Systeme filtrant dynamique
FR2902673A1 (fr) * 2006-06-26 2007-12-28 Pomes Darre T P Sarl Dispositif pour diffuser un fluide ou un gaz par le fond d'un reservoir
US8961901B2 (en) 2006-08-02 2015-02-24 Roche Diagnostics Operations, Inc. Microfluidic system and coating method therefor
CH711424A1 (de) * 2015-08-07 2017-02-15 Drm Dr Müller Ag Vorrichtung zum Befestigen und Abdichten von Filtergeweben und Membranschläuchen auf Filterelementen.
CN114053785A (zh) * 2021-10-26 2022-02-18 四川汇源钢建科技股份有限公司 一种酸洗加工用清洗液回收装置及其使用方法

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SE525213C2 (sv) * 2003-05-23 2004-12-28 Hyosong M Lee Förfarande och anordning för kontinuerlig filtrering av partiklar ur en vätska
US7488426B1 (en) * 2008-01-23 2009-02-10 Sohail Zaiter Scalable immersed-filtration method and apparatus
CN102794042B (zh) * 2011-05-25 2015-09-16 王启 全自动连续过滤压滤卸渣机
US9782703B2 (en) * 2011-09-30 2017-10-10 Basf Se Device for separating a heterogeneous mixture of matter and method for cleaning a filter unit
US9816282B2 (en) * 2013-08-16 2017-11-14 Robert Stanley Chick Self cleaning swimming pool filter
CN103908822B (zh) * 2014-04-23 2015-10-28 西安近代化学研究所 一种炸药悬浊液双向加压过滤分离装置
KR101681865B1 (ko) * 2016-03-30 2016-12-01 박정훈 프리 프랙션 필터 장치 및 그 제어 방법
US20220347603A1 (en) * 2021-04-30 2022-11-03 Pall Corporation Filter disk segments

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DE3603317A1 (de) * 1986-02-04 1987-08-06 Wilfried Moesing Verfahren zum trocknen von naturduenger und landwirtschaftlichen produkten, trocknung in einer beheizten vakuum-kammer nach vorhergehender eindickung und pressung
WO1988003048A1 (fr) * 1986-10-29 1988-05-05 Merai Josef Procede et installation de deshydratation de boues d'eaux usees
EP0539874A1 (fr) * 1991-10-26 1993-05-05 HRCH. HUPPMANN GmbH MASCHINENFABRIK Dispositif de filtration pour séparer des particules solides d'un liquide
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IL74873A (en) * 1985-04-10 1990-07-12 Drori Mordeki Multiple disc type filter and disc construction useful therein
ATE94082T1 (de) * 1988-11-17 1993-09-15 Herco Cff Chiralflow Filter Druckfilterapparat.
ES2046273T3 (es) * 1988-11-17 1994-02-01 Herco-Cff Chiralflow Filtertechnik Gmbh Aparato filtrante para separar un liquido turbio.
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EP0226659A1 (fr) * 1985-12-23 1987-07-01 Bauko Baukooperation Gmbh Filtre-presse
DE3603317A1 (de) * 1986-02-04 1987-08-06 Wilfried Moesing Verfahren zum trocknen von naturduenger und landwirtschaftlichen produkten, trocknung in einer beheizten vakuum-kammer nach vorhergehender eindickung und pressung
WO1988003048A1 (fr) * 1986-10-29 1988-05-05 Merai Josef Procede et installation de deshydratation de boues d'eaux usees
EP0539874A1 (fr) * 1991-10-26 1993-05-05 HRCH. HUPPMANN GmbH MASCHINENFABRIK Dispositif de filtration pour séparer des particules solides d'un liquide
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081053A1 (fr) * 2001-04-04 2002-10-17 Fraunhofer-Gesellschaft Zur Förderung Der Angewan Dten Forschung E.V. Systeme filtrant dynamique
FR2902673A1 (fr) * 2006-06-26 2007-12-28 Pomes Darre T P Sarl Dispositif pour diffuser un fluide ou un gaz par le fond d'un reservoir
US8961901B2 (en) 2006-08-02 2015-02-24 Roche Diagnostics Operations, Inc. Microfluidic system and coating method therefor
CH711424A1 (de) * 2015-08-07 2017-02-15 Drm Dr Müller Ag Vorrichtung zum Befestigen und Abdichten von Filtergeweben und Membranschläuchen auf Filterelementen.
CN108136286A (zh) * 2015-08-07 2018-06-08 Drm穆勒有限公司 用于固定和密封滤芯上的过滤器织物和隔膜软管的装置
CN114053785A (zh) * 2021-10-26 2022-02-18 四川汇源钢建科技股份有限公司 一种酸洗加工用清洗液回收装置及其使用方法

Also Published As

Publication number Publication date
AU3822799A (en) 1999-11-16
AU745848B2 (en) 2002-04-11
DE59811639D1 (de) 2004-08-05
EP0951930B1 (fr) 2004-06-30
ATE270135T1 (de) 2004-07-15
WO1999055441A1 (fr) 1999-11-04
US6419842B1 (en) 2002-07-16

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