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EP0569459A1 - Procede et installation pour la separation de melanges liquide-solide - Google Patents

Procede et installation pour la separation de melanges liquide-solide

Info

Publication number
EP0569459A1
EP0569459A1 EP92904360A EP92904360A EP0569459A1 EP 0569459 A1 EP0569459 A1 EP 0569459A1 EP 92904360 A EP92904360 A EP 92904360A EP 92904360 A EP92904360 A EP 92904360A EP 0569459 A1 EP0569459 A1 EP 0569459A1
Authority
EP
European Patent Office
Prior art keywords
pressing
filter
trough
pressure
press
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.)
Ceased
Application number
EP92904360A
Other languages
German (de)
English (en)
Inventor
Horst Guggemos
Edwin Haslauter
Robert Haslauter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0569459A1 publication Critical patent/EP0569459A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/30—Feeding devices ; Discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/38—Removal of the filter cakes by moving parts, e.g. scrapers, contacting stationary filter elements sprayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/38—Removal of the filter cakes by moving parts, e.g. scrapers, contacting stationary filter elements sprayers
    • B01D25/386—Nozzles

Definitions

  • the invention relates to a method according to the preamble of claim 1. Furthermore, the invention relates to a separating device for carrying out this method according to the preamble of patent claim 13.
  • a method or a device of this type, in which drainage is carried out exclusively via the filter plates delimiting the press spaces, is known from EP-A-318 732.
  • Such presses or separating devices differ in principle from those separating devices in which the mixture to be separated is pressed through filters or filter plates when pressure is applied; the filter plates can also limit the press rooms, but these press rooms do not change their volume during the pressing process.
  • Liquid-solid mixtures known which can also include conditioning processes, e.g. a polymer conditioning by adding organic flocculants, thermal conditioning or chemical conditioning (lime-iron chloride addition).
  • conditioning processes e.g. a polymer conditioning by adding organic flocculants, thermal conditioning or chemical conditioning (lime-iron chloride addition).
  • the chemical conditioning ie the addition of lime-iron chloride enables press cake thickness ⁇ up to 40 mm, as long as the pressing is carried out with a filter arranged on both sides of the press cake and gives, for example in the case of municipal sludges, dry matter contents of up to a maximum of 40 to 45%; this conditioning is mainly used in chamber filter presses.
  • a disadvantage is the increase in the presscake volume caused by the addition of lime by about 30%, as a result of which the actual dry matter content is considerably reduced with regard to the solids to be filtered out.
  • the above-mentioned restrictions do not apply to fiber-containing sludges from, for example, paper mill sewage treatment plants or other easily dewatered industrial sludges.
  • Paper mill sludges in particular are polymer-conditioned in membrane cylinder presses to over 60% To drain dry matter without any problems.
  • the squeezing out of these fiber-containing sludges is, however, not to be compared with the squeezing out of the sludges, the squeezing of which is to be improved according to the invention, since special precautions have to be taken in terms of construction and process technology, since initially the liquid is rather light and extremely difficult to press on is squeezable.
  • the aim of the present invention is to create a method or a separation device with which sludge which is difficult to dewater, such as municipal sludge and / or sludge from sewage treatment plants, can be separated to a large extent, so that dry matter contents of at least 40% , in particular of at least 50% and more can be achieved, even if these sludges have been aerobically stabilized.
  • Such aerobically stabilized sludges are extremely difficult to etch to dry matter contents of more than 30% with the conventional methods.
  • the aim of the invention is therefore to design a method of the type mentioned in the introduction such that both liquid-solid mixtures which are easy to squeeze out and mixtures or slurries, slurries, etc.
  • a method of the type mentioned at the outset is characterized by the features stated in the characterizing part of patent claim 1.
  • a Tre ⁇ n driving invention is characterized by the features stated in the characterizing part of claim 13. The invention is based on the idea of parallel and at a predetermined maximum distance in a pressing space delimited by a generally closed trough, which is divided into a plurality of non-dense or at least below and optionally also laterally and above open pressing volumes.
  • the inlet container is separated from the press rooms by a slide.
  • the surface of the lamellar filler has dimensions which are in the essential to that of Press chamber or the trough or their clear width correspond when the slide is closed, so that when pressing out, ie moving the plate filter in the direction of reducing the partial volumes in the direction of the longitudinal axis of the press chamber, the lamella filters with their edges on all sides on the boundary surfaces almost brush the trough or housing or baling chamber or get as close as possible to it; a seal between the peripheral surfaces or edges of the lamella filter and the housing interior is not provided; the contact between the lamella filters and the trough wall or the slide is seal-free.
  • the pressing process itself is brought about by the fact that the pressing space is reduced in the longitudinal direction, that is to say in a direction perpendicular to the surface of the filter plates, as a result of which the filled mixture between the filter plates is pressed out.
  • the internal friction angle of the press cake increases relatively rapidly due to the small filling thickness or the small distance between the filter plates, and a loss of liquid, so that only in the initial phase of the squeezing process with a low pressing pressure squeezing out of the mixture, ie the liquid together with solids occurs at the edges of the lamella filter.
  • Precautions are taken, however, that during the initial phase of the filtrate flowing out, solids which escape are collected by a filter arranged below the filter plate, so that at most the liquid can pass through the filter and the solids can be retained or the mixture which has escaped can be circulated.
  • This filter represents the lower limit of the pressing space and is arranged at a distance from the bottom of a lower trough in which the liquid passing through the filter is collected.
  • the solids can be rinsed out of the lower pan or from the filter, or further filtrate, which emerges from the filter plate and the press cake in the following squeezing step, can be poured into the possibly tilted pan drain and drain.
  • the trough is rinsed with cleaned in a rinsing direction, remains in the tilted position until the end of the second extrusion step and drains off dripping filtrate.
  • the trough can be folded away sideways or moved laterally or in the longitudinal direction, so that the space under the lamella filters is completely released. Subsequently, the lamella filters are then moved back into their original position, which movement or position by means of a limiting device attached to the individual lamella filters, e.g. Chain links or the like is limited or specified.
  • a limiting device attached to the individual lamella filters e.g. Chain links or the like is limited or specified.
  • a scraping device, a detaching device in the form of compressed air lances or the like which can be moved into the press rooms can be used. be provided.
  • the pressing pressure exerted in the course of the volume reduction in a first squeezing step is kept essentially at a constant value and is increased to an E ⁇ d value in a subsequent squeezing step which further reduces the volume. It is advantageous to proceed according to the features of claims 9 and 10, respectively. In this way, a relatively large reduction in volume is achieved in the course of the first squeezing step, so that a correspondingly long-stroke drive unit for the pressing device has to be provided, which, however, does not have to exert particularly large forces.
  • This desired linear volume restriction in the second pressing step or the desired final pressure can alternatively also be achieved in a single pressing step in which the pressure profile can preferably be made to increase steadily.
  • the drive unit or the pressing device is constructed in two or more stages, since the pressing pressure rises significantly in the second pressing step or towards the end of the pressing and thus considerably greater pressing forces are required, albeit over a smaller distance. Further advantageous embodiments of the invention can be found in the following description, the drawings and the claims.
  • FIG. 1 shows purely schematically a separating device according to the invention
  • FIG. 2 schematically shows a view of an embodiment of a separating device according to the invention
  • FIGS. 3 and 4 different working positions
  • FIG. 5 schematically shows the emptying
  • FIG. 6 and 6a show detailed views of filter plates
  • FIG.7 the mutual connection fertilization of filter plates and the stripping of filter cakes
  • FIG. 9 schematically shows a separating device for filter cakes adhering to the filter plates and a connecting device.
  • Fig.l shows schematically an embodiment of a separating device according to the invention.
  • This Trennei ⁇ cardi comprises an elongated housing formed by sheet metal walls or a trough 8, with front, back and side walls 51, which are indicated by dashed lines in the drawing; the trough 8 is closed at the bottom with a tiltable trough 11; the upper cover surface of the housing can be formed by a slide 18. Furthermore, an end plate 4 and a pressure plate 2 are arranged on or in the trough 8 or integrated therein; outside or in the housing also run, at most integrally with the front and rear walls, longitudinal members or guide members 1, which are connected to the end plate 4 at one end of the trough 8 and the other end to an abutment 5 for applying the pressing pressure, on which a press unit 6 is supported.
  • the pressing unit 6, which is arranged between the abutment 5 and the pressure plate 2, acts on the pressure plate 2 for an adjustment movement in the direction of the end plate 4.
  • the pressing space 30 lying between the end plate 4 and the pressure plate 2 is made up of a large number of pressing spaces located between filter plates 3 22 subdivided, which partial volumes 22 represent the pressing space 30 and are reduced in the course of the pressing process.
  • a feed container 7 and / or a number of feed channels 7 opens into the press chamber 30, which, if applicable, with respect to the press chamber 30 by means of the slide 18 or other shut-off devices can be lockable.
  • the closure is usually done after filling the press chamber 30, but can also be omitted.
  • the tub 11 is tightly connected to the trough walls via possibly inflatable seals 41.
  • a filter 25 runs essentially horizontally in the trough 11, which lies directly on the undersides of the filter plate 3 or is arranged at a distance from the latter; furthermore, the tub 11 carries an outlet 26 'for filtrate 16 and an outlet 24 for liquid-solid mixtures which emerge from the press rooms 22 when pressed and from a rinsing device 27 which is carried by the tub and / or the housing (FIG .3), can be rinsed off.
  • the press unit can be divided into two press or drive units 6 and 6 '.
  • a type of spindle press 6 ' can be provided which carries a pressure plate 5', this pressure plate 5 'being adjustable relative to the pressure plate 5 by the spindle press 6'.
  • the housing or the trough 8 or the filter 25 in the trough 11 or the slide 18 lie closely against the edges of the filter plates 3, but without the use of seals, which results in the advantage that the housing or the trough 8 does not have to be designed to be pressure-resistant and only has to withstand the filling pressure or the pressure of the first pressing step. If not only the filtrate but also the mixture escapes due to an increase in the pressing pressure, this can escape onto or through the filter plate 25 into the trough 11, so that a large pressure build-up in the pressing chamber 30, which would burden the housing walls 8, is avoided.
  • FIG. 3 shows the separating device according to the invention in the course of its first working step, in the course of which, when the tub 11 is closed or slightly tilted, solid / liquid mixture escaping by means of the flushing device 27 can be flushed out into a line 51, which
  • Line 51 is at most recirculated into the import container 7, to squeeze this mixture out again. It can be seen that the
  • Filter plates 3 are brought together by the action of the hydraulic press 6; in the course of a further squeezing step with increased
  • Pressure is further approximated to a desired end position, as indicated in FIG. 4.
  • the press space 30 is subdivided into a plurality of press spaces 22 which are laterally delimited by filter plates 3 in the press direction, which are essentially parallel to one another in the starting and end positions predetermined distance are arranged; however, the press rooms themselves are open on all sides. Since this predetermined distance is relatively short, a friction value is soon reached in the filter cake, which prevents solids from escaping, so that in the second pressing step, an extremely high dewatering or a high dry matter content can be achieved without solids escaping.
  • FIG 5 shows the end position of the pressing-out process of the inventive separating device, in which the filter plates 3 for discharging the filter cake 19 have been returned to their starting position, in order to be able to move the filter cake 19 in the vertical direction, if necessary with the aid of the surfaces of the filter plate 3 To be able to detach and discharge scraper knife 15.
  • the scraper blades 15 are provided with frame parts 46 which grip around the filter plates 3 on their vertical side edges, so that the scraper blades 15 running horizontally on both sides of the filter plates 3 in the direction of arrow 50 over the filters ⁇ plate surfaces 31 are movable.
  • the frame parts 46 In its lower end region, the frame parts 46 have recesses or eyelets 18 through which rods 17 are guided on both sides in the longitudinal direction of the separating device (FIG. 5) and can be moved up and down by means of actuating devices 20. This up and down movement takes place after the tub 11 has been removed from the housing 8; when the tub 11 is attached, the eyelets 18 and the rods 17 are received by recesses 24 on both sides between the tub 11 and the filter 25.
  • the recesses 24 serve to receive the sprayed mixture which emerges in the first squeezing step and to convey it into the recirculation line 51 to the filling container 7.
  • the space 26 below the filter 25 is guided to an outlet 26 'from which the filtrate 16 is discharged or one Sewage treatment plant for further supply is supplied.
  • the filter plates 3 are slidably guided in the longitudinal direction of the separation device; these tours can e.g. be formed by the upper surfaces 52 of the longitudinal beams 1, on which projections 38 of the filter plates 3 rest. In the same way, however, recesses or guides 37 could also be formed in the housing 8, in which the projections 38 of the filter plates 3 are slidably mounted.
  • adjacent filter plates 3 are connected to at least one connecting device, e.g. At least one pin 36 is attached to each filter plate 3 on both sides and the pins 36 of adjacent filter plates 3 are each surrounded by a ring part 35.
  • the last connecting device 35 connects a filter plate 3 to the end plate 4 or to the pressure plate 2, so that the filter plates 3 are reset exactly.
  • These connecting devices 35, 36 in no way hinder a movement of the filter plates towards one another, but prevent a distance beyond the predetermined maximum distance or ensure a constant thickness of the pressing volumes. It is understood that instead of the pins 36 and ring members 35 shown, other devices, e.g.
  • Chains or ropes 48 extending through the opening direction can be used, on each of which the filter plates 3, e.g. by clamping screws 49 or the like. are set.
  • the ends of the cables 48 are connected to the end plate 4 or the pressure plate 2 (FIG. 9).
  • the filter plates 3 can comprise two plates 41 provided with holes and an intermediate plate 45 provided with vertical longitudinal slots 40, the holes 41 of the perforated plates 14 opening into the longitudinal slots 40 of the middle plate 45.
  • At least one filter layer 13 is applied to the plates 14.
  • This filter plate 3 has vertical channels 33 which are preferably offset on both sides, the surfaces of the filter plates 3 being covered by filter supports 13. In this way it is possible to to discharge pressed liquid through the vertically running channels 33 downwards and to catch them in the tub 11.
  • a further possible embodiment of the filter plate 3 is the layering of metal filter fabrics, which are connected to one another in a non-displaceable manner and thus result in a rigid filter lamella.
  • the mesh sizes of the metal filter fabrics become ever finer towards the outside, so that only the filtrate can penetrate into the lamella and flow downwards in the coarse metal fabrics.
  • edges of the filter plate, or the filter plate itself are always spaced apart from one another during the pressing operation and are open at least over a circumferential surface, preferably over their entire circumferential surface.
  • An alternative to separating the filter cake 19 from the filter surfaces 31 can be to insert a blowing lance 21 between two filter plates 3 moved back into their starting position into the upper region of the respective pressing chamber 22, the nozzles 32 of which are adjacent to the Surfaces 31 of the filter plates 3 are arranged and which release the filter cake 19 with the jet pressure and allow it to exit downwards.
  • a piston 9 can be arranged, which forces the press chamber 30 to be loaded and thus presses the mixture to a certain extent when the filter plate 3 is stationary in the starting position.
  • the piston 9 carries a check valve 23 which prevents the mixture filled in the pressing chamber 30 from passing upwards.
  • the filter material 13 applied to the filter plates 3 can consist of plastic and / or metal mesh; the filter plates 3 can consist of plastic, cast metal or profiled steel sheets.
  • the embodiment according to FIG. 8 a is advantageously produced from plastic plate, which are provided with the longitudinal channels 33 by means of corresponding processing methods.
  • the filter plates 3 can have any type of profiled or perforated surface; it is only necessary that the filtrate penetrating through the filter material 13 can flow between the filter material 13 and the filter plate 3 or in the filter plate 3. Discharge channels 33 which run obliquely or horizontally are also possible.
  • the filter emerging or ejected from the separating device kuche ⁇ 19 can be removed by means of a conveyor or falls into an appropriate container for removal.
  • An essential advantage of the separating device according to the invention is that a certain amount of dewatering takes place during the filling of the device, even before the first pressing step is carried out, since the liquid can to a certain extent pass through the filter 25 and / or lateral filter walls, which pre-watering effect occurs the pressure of the piston 9 can be increased during its downward movement, so that a mixture that has already been pre-pressed to a certain extent can be subjected to the pressing process.
  • Opening devices according to the invention can have a length of several meters; their cross-sectional dimensions are e.g. 100 x 100 cm. It is advantageously provided that the pressure in the course of the first pressing step is set to a value of 0.5 to 6 bar, preferably 1 to 5 bar, in particular 2 to 4 bar, and that the final value of the pressing pressure in the second pressing step is set to at least 10 bar , in particular to 20 to 50 bar or higher.
  • the course of the pressure in the course of the first pressing step is kept essentially constant and also results from the fact that along the relatively long pressing path there is due to the large liquid portion of the mixture used and the large areas available for the filtrate outlet and the thinness of the pressing rooms the pressure does not increase, but rather shows a tendency to remain the same despite narrowing the partial volumes.
  • the pressure does not increase, but rather shows a tendency to remain the same despite narrowing the partial volumes.
  • by forming only thin press cakes clogging of the cakes is avoided or the efficiency of the separation process is ensured due to the large number of cakes to be pressed.
  • the pressure rise in this second squeezing step takes place either linearly, stepwise or more steeply than linearly, until the predetermined final value is reached, which can be maintained over a predetermined period of time.
  • the tub 11 is also rinsed just before the start of the second squeezing step, that is to say the leaked mixture is removed through the recirculation line 51 in order to be able to dispose of the pure filtrate 16. A very clean separation of the mixture is achieved in this way.
  • the number of filter plates 3 provided in a separating device can be 160 to 200 pieces with a length of, for example, 8 m, depending on the selected maximum distance in the starting position of the filter plates 3.
  • a major advantage of the press is that only small pressures have to be applied in the course of the first pressing process, but this over long ways; Such drive devices are relatively easy to create; High-pressure devices are complex, which only have to be used in the second pressing step over short distances.
  • the separation can also take place in only one pressing step.
  • the number of guides provided for or on the filter plates 3 can be selected as desired;
  • the guides are advantageously arranged on the lateral vertical surfaces or edges of the filter plates 3.
  • one or more inlet containers for the mixture open into the housing 8, preferably extending over the entire length of the pressing space 30 and possibly having its width, in particular above the pressing spaces 22 (n). It is advantageous if the inlet container (s) extends (s) over the entire length of the press space in order to be able to fill all the press spaces 22 simultaneously and quickly. As shown in FIGS. 6 and 12, a plurality of supply channels 7 extending along the trough 8 can be used, which can at most be locked with slides. In order to achieve a continuous preparation of the mixture, several separation devices according to the invention can be arranged, the filling, the pressing and the emptying being carried out in cycles, so that the continuously occurring mixture can be disposed of quasi-continuously.
  • the trough 8 is formed by a concrete wall, in particular a metal concrete wall, which can be too open at the bottom or can be provided with filters 67 which can be tilted or swiveled or pushed sideways.
  • the concrete casing or the concrete trough 8 forms the abutment for the pressing devices 6 arranged on both sides in the trough, which act on a number of filter plates 3 via corresponding pressure plates 2.
  • a central plate 64 which is anchored stably in the trough 8 and against which the filter plates 3 can be pressed, as a result of which the pressure distribution in the press volume is equalized.
  • the press volume is delimited by side walls 66, which at most have filter wall sections or can be formed by filter walls, so that a filtrate filter came out easily and easily to the side.
  • the side walls 66 can be placed laterally with hydraulic cylinders on the filter plates 3 and removed for the execution of the second pressing step or for the application of the filter cake.
  • the filter plates 3 can also be covered or closed at the top by means of a slide 68. It is also possible to arrange a lowerable filter 25 in a lowerable trough in the lower region of the trough 8 formed by a concrete trough, with hydraulic devices possibly being provided for the lowering; the lower cover of the separating device could also be moved to the side.
  • FIG. 11 shows a movable device for dispensing the filter cake from the press volumes.
  • This moveable device can be arranged movably on rails 69 above the pressing space and comprises a number of scraper blades 15 which can be lowered into the pressing volumes by means of, for example, a manual or motor-operated or an electric drive unit 70, as shown in FIG .11a are shown.
  • the scraper blades 15 consist of a drive shaft 71 which can be moved up and down by a toothed wheel 72 " and carries a crossbeam 73, on the two sides of which and as can be seen from FIG.
  • 63 scraping blades 62 are each arranged via spring bars 11b shows, laterally in the area of the movable arrangement 61, a guide 74 that can be inserted into the press volumes is pivotally mounted about a pivot point 75, which can be inserted with its tapered end 76 into the press volumes or into its upper end, as in FIG Fig. 11b is shown successively: As soon as the guide 74 has achieved a firm fit, the Guide 74, the blades 62 of the scraper blades are lowered and scrape the filter cake 19 from the filter surfaces of the filter plates 3.
  • FIG. 12 shows a section through a trough 8, which has an inlet channel 7 in its upper region, which extends over a number of pressing volumes in the longitudinal direction of the trough 8 and can be shut off by means of a slide 18.
  • the trough made of any material, e.g. is also made of plastic.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

L'invention concerne un procédé et une installation pour la séparation de milieux liquides et solides mélangés par expression ou filtrage de la partie liquide, le mélange à séparer étant fractionné en un grand nombre de volumes partiels juxtaposés ou successifs qui sont concentrés ou réduits, ensemble et simultanément, par la mise en oeuvre d'une pression sensiblement égale pour tous les volumes partiels, appliquée de l'extérieur aux volumes partiels, exercée dans la direction où sont disposés les uns à côté des autres les volumes partiels et se poursuivant à travers tous les volumes partiels, les substances solides étant retenues dans les volumes partiels sous forme de tourteaux de filtration et le milieu liquide étant exprimé sous forme de filtrat. Dans l'invention, il est prévu que le filtrat soit évacué ou exprimé à l'extérieur des volumes partiels ou des tourteaux se formant dans les volumes partiels par leurs surfaces frontales ou par la surface frontale concernée et également par au moins la surface périphérique inférieure et éventuellement aussi par les surfaces périphériques supérieures, de préférence également par les surfaces périphériques latérales, et donc de préférence par toute la surface supérieure des volumes partiels ou du tourteau, c'est-à-dire par les surfaces frontales et périphériques.
EP92904360A 1991-02-01 1992-01-29 Procede et installation pour la separation de melanges liquide-solide Ceased EP0569459A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT225/91 1991-02-01
AT0022591A AT396923B (de) 1991-02-01 1991-02-01 Verfahren und trenneinrichtung zum auftrennen bzw. entwässern von flüssigkeit-feststoff-gemischen

Publications (1)

Publication Number Publication Date
EP0569459A1 true EP0569459A1 (fr) 1993-11-18

Family

ID=3484865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92904360A Ceased EP0569459A1 (fr) 1991-02-01 1992-01-29 Procede et installation pour la separation de melanges liquide-solide

Country Status (10)

Country Link
EP (1) EP0569459A1 (fr)
JP (1) JPH06506141A (fr)
AT (1) AT396923B (fr)
AU (1) AU656169B2 (fr)
BR (1) BR9205579A (fr)
CA (1) CA2101732A1 (fr)
CZ (1) CZ154493A3 (fr)
HU (1) HUT67819A (fr)
SK (1) SK82793A3 (fr)
WO (1) WO1992013624A1 (fr)

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DE4425755C1 (de) * 1994-07-21 1995-09-14 Netzsch Erich Holding Vorrichtung zum Ableiten von Filtrat unterhalb einer Filterpresse
DE19707070C2 (de) * 1997-02-22 1999-04-01 Netzsch Erich Holding Filterpresse
CN112757680A (zh) * 2019-11-01 2021-05-07 王树岩 一种餐厨垃圾接料挤压一体机

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Also Published As

Publication number Publication date
BR9205579A (pt) 1994-10-11
CZ154493A3 (en) 1994-03-16
JPH06506141A (ja) 1994-07-14
AT396923B (de) 1993-12-27
WO1992013624A1 (fr) 1992-08-20
AU656169B2 (en) 1995-01-27
SK82793A3 (en) 1994-01-12
CA2101732A1 (fr) 1992-08-02
HU9302184D0 (en) 1993-10-28
ATA22591A (de) 1993-05-15
AU1200792A (en) 1992-09-07
HUT67819A (en) 1995-05-29

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