EP3040192A1 - Roller press - Google Patents
Roller press Download PDFInfo
- Publication number
- EP3040192A1 EP3040192A1 EP15194493.1A EP15194493A EP3040192A1 EP 3040192 A1 EP3040192 A1 EP 3040192A1 EP 15194493 A EP15194493 A EP 15194493A EP 3040192 A1 EP3040192 A1 EP 3040192A1
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- European Patent Office
- Prior art keywords
- drum
- press
- roller
- roll
- axis
- 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.)
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- 239000002028 Biomass Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004460 silage Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
- B30B9/207—Roller-and-ring presses
Definitions
- the invention relates to a roller press with a rotatably mounted outer drum, an eccentrically arranged in the outer drum, rotatably mounted press roll, the one of the drum and press roller formed press nip feeding material feeding device and a pulp discharge device, wherein the axis of the press roller in the lower part of the Drum is arranged in a respect to the axis of rotation of the drum from the vertical in the direction of the trigger device deviating sector.
- Such a configured roller press is already out of the DE 32 18 634 A1 out.
- Other devices for squeezing liquid from a solid are from the 7 25 031 A , of the DE 34 17 966 A1 and the AT 20 00 03 B known.
- the aim is to substantially reduce the content of the mineral plant constituents in the pressed material.
- belt filter presses are suitable for the separation of surface water, but not for the separation of water from the cell structure of biomass, as with a band filter press the necessary pressures can not be achieved.
- screw presses are suitable, either with a conical screw in a conical screen casing or a cylindrical screw with a conical core and / or decreasing pitch in a cylindrical screen casing.
- a conical screw in a conical screen casing or a cylindrical screw with a conical core and / or decreasing pitch in a cylindrical screen casing.
- screw presses also have the disadvantage that they lead to relatively large layer thicknesses in the biomass, regardless of the design. With increasing thickness of the layer and increasing compaction of the biomass in the screw namely the flow of water is hindered.
- the compacted in the screw biomass acts as a filter for undissolved plant ingredients such. As starch, and prevents transfer of these important for the energetic utilization of the press juice substances in the press juice.
- roller presses with internal and / or external pressure rollers, with smooth and perforated roller surfaces are also known.
- An advantage of roller presses is the fact that the high compression pressures necessary for breaking up the cell structure of the hemicellular biomass can be produced.
- the usual perforated roll surfaces of perforated plates or gap sieves are not suitable.
- rollers with larger wall thicknesses are required, the perforation of which can only be produced by drilling, which is a very complicated and costly procedure for the hole diameters of 2 to 3 mm required for hemi-biomass.
- Roller presses generally have a narrow press nip, resulting in a good removal of the press juice due to the small layer thicknesses of the solid in conjunction with the perforation of the rollers.
- the fibers form a coating on the roll surfaces which closes the holes or gaps with increasing pressure. Since there are no relative movements between the biomass and the perforated surfaces as in the screw press, eliminates the self-cleaning effect. As a result, the beneficial effect of the perforation of the roll surfaces is severely limited, if not completely eliminated.
- the degree of dewatering achieved by roll pressing is very much dependent on the uniform distribution of the material across the roll width.
- a one-sided feed for example, leads to the fact that on the other hand, the desired pressing pressures are not achieved.
- halm-like biomass is an extremely poorly flowing bulk material. To achieve a high degree of dewatering, therefore, a suitable dosing system is required.
- the object of the invention is therefore to provide a roller press, can be dehydrated with the biomass in a single step under cell disruption with simultaneous discharge of plant ingredients in a high degree.
- a conventional roll press is designed so that a lying in a drum press roll with a closed, ie non-perforated roll surface is placed in the roll drum so that the pressed liquid flows through the low-density and uncompressed biomass against the Mateualpound and is discharged in a largely solids-free zone at the bottom of the drum ( drum sole ) under the baffle of the metering device via preferably formed openings in side windows of the drum.
- the diameter ratio of the drum and press roll is chosen so that on the one hand the collection of biomass is ensured in the press zone, on the other hand, with regard to the outflow of the liquid, the length of the press zone is kept as short as possible.
- the press roll preferably has a diameter of 25% to 50% of the diameter of the outer drum, depending on the properties of the biomass.
- the press roll is preferably arranged at an angle between 30 ° and 60 ° from the lower point of the drum.
- the surfaces of the drum and the press roll can be profiled and in particular have an interlocking profile.
- Decisive for a good drainage result is a uniform supply of biomass across the entire press width to the press zone.
- the press is preferably charged with a screw conveyor in the form that, controlled by a suitable level indicator, a delimited product space is filled within the press on the entire press width up to a predetermined height.
- the biomass is supplied from the metering device according to the invention uniformly over full width via a guide plate of the press zone.
- a guide plate of the press zone This can for example consist of rotating drivers or a push element.
- the metering device can also be used to build up a pre-pressure in the press zone.
- the roller press consists of a rotatably mounted in the frame 3 by means of ball slewing 5 outer drum 1 and an eccentrically arranged in this to the axis of the drum 1, also rotatably mounted press roller 2.
- the drum 1 is by means of the teeth on the outer rings of the ball slewing 4 through the Pinion 5 driven.
- the press roll 2 is mounted in the rocker 6 rotatably connected to the frame 3. It is pressed by means of hydraulic cylinder 7 with a constant preselected pressure to the drum 1, regardless of the amount of biomass supplied and the resulting layer thickness in the press zone. 8
- the biomass is fed with the screw conveyor 9 to the product space 12 formed by the drum 1, the laterally delimiting walls 10 and the partition 11. It is then preferably fed controlled by the drivers 13 of the rotary metering shaft 14 via the gap 17 between baffle 15 and the press roller 2 of the press zone 8.
- the guide plate 15 is provided with slots 16 through which the driver 13, seen relative to the baffle 15, emerge on the side of the drum 1 and dive on the opposite side again.
- the drivers 13 are designed so that adhering biomass is stripped off in the guide plate 15 on the top of the guide plate 15 when diving.
- the biomass After passing through the press zone 8, the biomass is released from the scrapers 18 from the surfaces of the drum 1 and the press roll 2.
- the scrapers are rotatably mounted by means of the axis 19 in the lateral boundaries 10 and are preferably by springs outside the pressing space to the surfaces of the drum 1 and press roll 2 pressed.
- the biomass With increasing filling of the product space 20, the biomass is discharged through the discharge screw 21.
- the squeezed liquid is discharged through the lateral openings 22 in the side disks arranged on both sides of the drum 1, which annularly bound the drum 1 at the end faces of the drum 1 as a flange.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Press Drives And Press Lines (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Walzenpresse mit einer drehbar gelagerten äußeren Trommel (1), einer in der äußeren Trommel (1) exzentrisch angeordneten, drehbar gelagerten Presswalze (2), einer dem von Trommel (1) und Presswalze (2) gebildeten Pressspalt Pressgut zuführenden Zuführungseinrichtung (9) und einer gepresstes Pressgut abführenden Abzugseinrichtung (21), wobei die Achse der Presswalze (2) im unteren Bereich der Trommel (1) in einem in Bezug auf die Drehachse der Trommel (1) von der Senkrechten in Richtung der Abzugseinrichtung (21) abweichenden Sektor angeordnet ist, gekennzeichnet durch ein den Boden der Trommel (1) überdeckendes, dem Pressspalt von der Zuführungseinrichtung (9) Pressgut zuleitendes Leitblech (15), wobei das Leitblech (15) Schlitze (16) aufweist und zum Vortrieb der Biomasse unterhalb des Leitblechs (15) eine eine Mehrzahl von Mitnehmern (13) aufweisende Dosierwelle (14) angeordnet ist, wobei die Mitnehmer (13) im Betrieb der Walzenpresse durch die Schlitze (16) hindurch greifen.Roller press with a rotatably mounted outer drum (1), one in the outer drum (1) eccentrically arranged, rotatably mounted press roll (2), one of the drum (1) and press roller (2) formed by pressing material feeding feeding device (9) and a discharge device (21) which discharges compressed material, wherein the axis of the press roll (2) is arranged in the lower region of the drum (1) in a sector deviating from the vertical in the direction of the take-off device (21) with respect to the axis of rotation of the drum (1) characterized in that the guide plate (15) has slots (16) and for driving the biomass underneath the guide plate (15), characterized by a guide plate (15) covering the bottom of the drum (1) and covering the press nip by the feed device (9) ) is arranged a plurality of drivers (13) having metering shaft (14), wherein the drivers (13) engage in the operation of the roller press through the slots (16) therethrough ,
Description
Die Erfindung betrifft eine Walzenpresse mit einer drehbar gelagerten äußeren Trommel, einer in der äußeren Trommel exzentrisch angeordneten, drehbar gelagerten Presswalze, einer dem von Trommel und Presswalze gebildeten Pressspalt Pressgut zuführenden Zuführungseinrichtung und einer Pressgut abführenden Abzugseinrichtung, wobei die Achse der Presswalze im unteren Bereich der Trommel in einem in Bezug auf die Drehachse der Trommel von der Senkrechten in Richtung der Abzugseinrichtung abweichenden Sektor angeordnet ist.The invention relates to a roller press with a rotatably mounted outer drum, an eccentrically arranged in the outer drum, rotatably mounted press roll, the one of the drum and press roller formed press nip feeding material feeding device and a pulp discharge device, wherein the axis of the press roller in the lower part of the Drum is arranged in a respect to the axis of rotation of the drum from the vertical in the direction of the trigger device deviating sector.
Eine derartig ausgestaltete Walzenpresse geht bereits aus der
Zur energetischen Verwertung von Biomassen sind verschiedene miteinander verknüpfte Verfahren bekannt, z.B. Silierung durch Lagerung unter Luftabschluss, Konservierung durch die sich dann bildende Milchsäure, Trennung der Silage in einen Presssaft und ein Pressgut durch mechanische Entwässerung der Silage, Vergärung des so gewonnenen Presssafts in einer Biogasanlage und Trocknung des Pressgutes mit der Abwärme aus der Biogasanlage zur Herstellung eines Brennstoffes.For energetic utilization of biomass, various interlinked processes are known, e.g. Silage by storage under exclusion of air, preservation by the then forming lactic acid, separation of silage in a press juice and a pressed material by mechanical dehydration of the silage, fermentation of the thus obtained press juice in a biogas plant and drying the material to be pressed with the waste heat from the biogas plant to produce a fuel.
Wichtig bei diesen Verfahren ist die Überführung eines großen Teils der in den Pflanzen enthaltenen leicht vergärbaren Pflanzeninhaltsstoffe in den Presssaft. Dies sind einerseits gelöste Stoffe, wie Glukose, und andererseits ungelöste Stoffe, wie Stärke. Mit Rücksicht auf die Verbrennungseigenschaften des produzierten Brennstoffes wird angestrebt, den Gehalt der mineralischen Pflanzeninhaltsstoffe in dem Pressgut weitgehend zu reduzieren.Important in these methods is the transfer of a large part of the easily fermentable plant ingredients contained in the plants in the press juice. These are on the one hand dissolved substances, such as glucose, and on the other hand, undissolved substances, such as starch. With regard to the combustion characteristics of the produced fuel, the aim is to substantially reduce the content of the mineral plant constituents in the pressed material.
Generell gestaltet sich die Überführung der ungelösten, aber auch der gelösten Pflanzeninhaltsstoffe in den Presssaft als schwierig, weil diese in der Zellstruktur der Pflanzen aus Lignocellulose eingeschlossen sind.In general, the transfer of the undissolved, but also the dissolved plant ingredients in the press juice designed as difficult because they are included in the cell structure of the plants of lignocellulose.
Daher ist es notwendig, die Zellstruktur der silierten Pflanzen unter mechanischer Einwirkung aufzuschließen, diese weitgehend zu entwässern und dabei organische und anorganische Pflanzeninhaltsstoffe auszutragen, wobei prinzipiell verschiedene Vorrichtungen zur mechanischen Entwässerung zur Verfügung stehen.Therefore, it is necessary to digest the cell structure of the ensiled plants under mechanical action, to drain them to a great extent and thereby to discharge organic and inorganic plant constituents, wherein in principle different devices for mechanical drainage are available.
Beispielsweise eignen sich Bandfilterpressen für die Abscheidung von Oberflächenwasser, jedoch nicht die für die Abscheidung von Wasser aus der Zellstruktur von Biomasse, da mit einer Bandfilterpresse die hierfür notwendigen Drücke nicht erreicht werden können.For example, belt filter presses are suitable for the separation of surface water, but not for the separation of water from the cell structure of biomass, as with a band filter press the necessary pressures can not be achieved.
Des Weiteren eignen sich Schneckenpressen, entweder mit einer konischen Schnecke in einem konischen Siebmantel oder einer zylindrischen Schnecke mit konischem Kern und/oder abnehmender Steigung in einem zylindrischen Siebmantel. Bei geringen Anforderungen an den Entwässerungsgrad und den dafür erforderlichen geringen Pressdrücken werden meist gestanzte Lochbleche oder Spaltsiebe für die Siebmäntel eingesetzt.Furthermore, screw presses are suitable, either with a conical screw in a conical screen casing or a cylindrical screw with a conical core and / or decreasing pitch in a cylindrical screen casing. With low demands on the degree of dewatering and the required low pressing pressures usually punched perforated plates or slotted sieves are used for the Siebmäntel.
Der Pressdruck führt zwar dazu, dass die Feststoffe die Bohrungen in dem Siebmantel verstopfen. Durch die von den verdichteten Feststoffen erzeugten Scherkräfte werden aber die nach innen aus den Löchern herausragenden Teile der sie verstopfenden Feststoffpartikeln abgetragen. Hierdurch ergibt sich ein selbstreinigender Effekt, der vielfach durch Verwendung von Lochblechen mit sich in Flussrichtung erweiternden gebohrten Löchern verbessert wird.Although the pressing pressure causes the solids to clog the holes in the screen jacket. However, due to the shear forces generated by the compacted solids, the parts of the solid particles which clog inward from the holes are removed. This results in a self-cleaning effect, which is often improved by the use of perforated plates with expanding in the flow direction drilled holes.
Schneckenpressen haben aber auch den Nachteil, dass diese unabhängig von der Bauform zu relativ großen Schichtdicken bei der Biomasse führen. Mit zunehmender Dicke der Schicht und zunehmender Verdichtung der Biomasse in der Schnecke wird nämlich der Abfluss von Wasser behindert. Zusätzlich wirkt die in der Schnecke verdichtete Biomasse als Filter für ungelöste Pflanzeninhaltsstoffe, wie z. B. Stärke, und verhindert ein Überführen dieser für die energetische Verwertung des Presssafts wichtigen Stoffe in den Presssaft.However, screw presses also have the disadvantage that they lead to relatively large layer thicknesses in the biomass, regardless of the design. With increasing thickness of the layer and increasing compaction of the biomass in the screw namely the flow of water is hindered. In addition, the compacted in the screw biomass acts as a filter for undissolved plant ingredients such. As starch, and prevents transfer of these important for the energetic utilization of the press juice substances in the press juice.
Nachteilig bei den Schneckenpressen sind außerdem der hohe Verschleiß und ein hoher Energiebedarf auf Grund der Reibung des verdichteten Materials an dem Siebmantel. Hieraus resultiert wiederum eine Begrenzung der Pressdrücke.A disadvantage of the screw presses are also the high wear and high energy requirements due to the friction of the compacted material on the screen jacket. This in turn results in a limitation of the compression pressures.
Für die Fest/Flüssigtrennung sind außerdem Walzenpressen mit innen- und/oder außenliegenden Anpresswalzen, mit glatten und perforierten Walzenoberflächen bekannt. Vorteilhaft bei Walzenpressen ist die Tatsache, dass die für ein Aufbrechen der Zellstruktur der halmartigen Biomasse notwendigen hohen Pressdrücke erzeugt werden können. Allerdings sind die üblichen perforierten Walzenoberflächen aus Lochblechen oder Spaltsieben dafür nicht geeignet. Für diesen Zweck sind Walzen mit größeren Wandstärken erforderlich, deren Perforation nur durch Bohren hergestellt werden kann, welches bei den für halmartige Biomasse erforderlichen Bohrungsdurchmessern von 2 bis 3 mm ein sehr aufwändiges und kostenträchtiges Verfahren ist.For solid / liquid separation, roller presses with internal and / or external pressure rollers, with smooth and perforated roller surfaces are also known. An advantage of roller presses is the fact that the high compression pressures necessary for breaking up the cell structure of the hemicellular biomass can be produced. However, the usual perforated roll surfaces of perforated plates or gap sieves are not suitable. For this purpose, rollers with larger wall thicknesses are required, the perforation of which can only be produced by drilling, which is a very complicated and costly procedure for the hole diameters of 2 to 3 mm required for hemi-biomass.
Walzenpressen haben in der Regel einen engen Pressspalt, wodurch sich aufgrund der geringen Schichtdicken des Feststoffes in Verbindung mit der Perforation der Walzen eine gute Abfuhr des Presssaftes ergibt. Bei halmartiger Biomasse bilden die Fasern allerdings auf den Walzenoberflächen einen Belag, der mit zunehmendem Druck die Löcher oder Spalten verschließt. Da es keine Relativbewegungen zwischen der Biomasse und der perforierten Oberflächen wie bei den Schneckenpressen gibt, entfällt der selbstreinigende Effekt. Dadurch wird die vorteilhafte Wirkung der Perforation der Walzenoberflächen stark eingeschränkt, wenn nicht gar gänzlich beseitigt.Roller presses generally have a narrow press nip, resulting in a good removal of the press juice due to the small layer thicknesses of the solid in conjunction with the perforation of the rollers. However, in the case of a semi-biomass, the fibers form a coating on the roll surfaces which closes the holes or gaps with increasing pressure. Since there are no relative movements between the biomass and the perforated surfaces as in the screw press, eliminates the self-cleaning effect. As a result, the beneficial effect of the perforation of the roll surfaces is severely limited, if not completely eliminated.
Schließlich hängt der durch Walzenpressen erreichte Entwässerungsgrad ganz wesentlichen von der gleichmäßigen Verteilung des Materials über die Walzenbreite ab. Eine einseitige Beschickung führt zum Beispiel dazu, dass auf der anderen Seite die angestrebten Pressdrücke nicht erreicht werden. Insbesondere halmartige Biomasse ist ein außerordentlich schlecht fließendes Schüttgut. Für die Erzielung eines hohen Entwässerungsgrades ist daher ein geeignetes Dosiersystem erforderlich.Finally, the degree of dewatering achieved by roll pressing is very much dependent on the uniform distribution of the material across the roll width. A one-sided feed, for example, leads to the fact that on the other hand, the desired pressing pressures are not achieved. In particular, halm-like biomass is an extremely poorly flowing bulk material. To achieve a high degree of dewatering, therefore, a suitable dosing system is required.
Aufgabe der Erfindung ist es daher, eine Walzenpresse zu schaffen, mit der Biomasse in einem einzigen Schritt unter Zellaufschluss bei gleichzeitigem Austrag der Pflanzeninhaltsstoffe in einem hohen Maße entwässert werden kann.The object of the invention is therefore to provide a roller press, can be dehydrated with the biomass in a single step under cell disruption with simultaneous discharge of plant ingredients in a high degree.
Diese Aufgabe wird erfindungsgemäß mit der Walzenpresse mit den Merkmalen von Anspruch 1 gelöst. Die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder.This object is achieved with the roller press with the features of
Nach einer besonders bevorzugten Ausgestaltung wird eine herkömmliche Walzenpresse so ausgestaltet, dass eine in einer Trommel liegende Presswalze mit einer geschlossenen, d.h. nicht perforierten Walzenoberfläche so in der Walzentrommel angeordnet wird, dass die abgepresste Flüssigkeit durch die gering verdichtete und unverdichtete Biomasse entgegen dem Mateualfluss abfließt und in einer weitgehend feststofffreien Zone am Boden der Trommel (Trommelsohle) unter dem Leitblech der Dosiereinrichtung über bevorzugt ausgebildete Öffnungen in Seitenscheiben der Trommel abgeführt wird.According to a particularly preferred embodiment, a conventional roll press is designed so that a lying in a drum press roll with a closed, ie non-perforated roll surface is placed in the roll drum so that the pressed liquid flows through the low-density and uncompressed biomass against the Mateualfluss and is discharged in a largely solids-free zone at the bottom of the drum ( drum sole ) under the baffle of the metering device via preferably formed openings in side windows of the drum.
Das Durchmesserverhältnis von Trommel und Presswalze wird so gewählt, dass einerseits der Einzug der Biomasse in die Presszone sichergestellt ist, andererseits mit Rücksicht auf den Abfluss der Flüssigkeit die Länge der Presszone so kurz wie möglich gehalten wird. Die Presswalze hat bevorzugt abhängig von den Eigenschaften der Biomasse einen Durchmesser von 25 % bis 50 % des Durchmessers der äußeren Trommel. Die Presswalze ist vorzugsweise in einem Winkel zwischen 30° und 60° vom unteren Punkt der Trommel angeordnet.The diameter ratio of the drum and press roll is chosen so that on the one hand the collection of biomass is ensured in the press zone, on the other hand, with regard to the outflow of the liquid, the length of the press zone is kept as short as possible. The press roll preferably has a diameter of 25% to 50% of the diameter of the outer drum, depending on the properties of the biomass. The press roll is preferably arranged at an angle between 30 ° and 60 ° from the lower point of the drum.
Um den Einzug des Materials sicher zu stellen, können optional die Oberflächen der Trommel und der Presswalze profiliert werden und insbesondere ein ineinander greifendes Profil aufweisen.In order to ensure the intake of the material, optionally the surfaces of the drum and the press roll can be profiled and in particular have an interlocking profile.
Entscheidend für ein gutes Entwässerungsergebnis ist eine gleichmäßige Zuführung der Biomasse über die ganze Pressenbreite zur Presszone. Dafür wird die Presse vorzugsweise mit einer Förderschnecke in der Form beschickt, dass, gesteuert über einen geeigneten Füllstandsmelder, ein abgegrenzter Produktraum innerhalb der Presse auf der ganzen Pressenbreite bis zu einer vorgegebenen Höhe gefüllt ist.Decisive for a good drainage result is a uniform supply of biomass across the entire press width to the press zone. For this, the press is preferably charged with a screw conveyor in the form that, controlled by a suitable level indicator, a delimited product space is filled within the press on the entire press width up to a predetermined height.
Am unteren Ende des Produktraumes wird die Biomasse von der erfindungsgemäßen Dosiereinrichtung gleichmäßig auf voller Breite über ein Leitblech der Presszone zugeführt. Diese kann beispielsweise aus umlaufenden Mitnehmern oder einem Schubelement bestehen. Die Dosiereinrichtung kann auch dafür benutzt werden in der Presszone einen Vordruck aufzubauen.At the lower end of the product space, the biomass is supplied from the metering device according to the invention uniformly over full width via a guide plate of the press zone. This can for example consist of rotating drivers or a push element. The metering device can also be used to build up a pre-pressure in the press zone.
Die Erfindung wird anhand eines in den Zeichnungen dargestellten besonders vorteilhaft ausgestalteten Ausführungsbeispiels näher erläutert. Es zeigen:
- Fig. 1
- einen Querschnitt durch eine Walzenpresse nach der Erfindung;
- Fig. 2
- einen horizontalen Schnitt durch der Walzenpresse aus
Fig. 1 ; und - Fig. 3
- eine perspektivische Ansicht der Walzenpresse nach der Erfindung.
- Fig. 1
- a cross section through a roller press according to the invention;
- Fig. 2
- a horizontal section through the roller press
Fig. 1 ; and - Fig. 3
- a perspective view of the roller press according to the invention.
Das in
Die Biomasse wird mit der Förderschnecke 9 dem durch die Trommel 1, den seitlich begrenzenden Wandungen 10 und die Trennwand 11 gebildeten Produktraum 12 zugeführt. Sie wird dann vorzugsweise von den Mitnehmern 13 der drehbaren Dosierwelle 14 über den Spalt 17 zwischen Leitblech 15 und der Presswalze 2 der Presszone 8 kontrolliert zugeführt. Das Leitblech 15 ist mit Schlitzen 16 versehen, durch welche die Mitnehmer 13, relativ zum Leitblech 15 gesehen, an der Seite der Trommel 1 auftauchen und auf der gegenüberliegenden Seite wieder abtauchen. Die Mitnehmer 13 sind so ausgebildet, dass anhaftende Biomasse beim Abtauchen in das Leitblech 15 auf der Oberseite des Leitblechs 15 abgestreift wird.The biomass is fed with the
Nach dem Durchgang durch die Presszone 8 wird die Biomasse von den Abstreifern 18 von den Oberflächen der Trommel 1 und der Presswalze 2 gelöst. Die Abstreifer sind mittels der Achse 19 in den seitlichen Begrenzungen 10 drehbar gelagert und werden vorzugsweise durch Federn außerhalb des Pressraumes an die Oberflächen von Trommel 1 und Presswalze 2 angepresst. Mit zunehmender Füllung des Produktraumes 20 wird die Biomasse durch die Austragsschnecke 21 ausgetragen. Die ausgepresste Flüssigkeit wird durch die seitlichen Öffnungen 22 in den beidseits angeordneten Seitenscheiben der Trommel 1, die als Flansch die Trommel 1 an den Stirnseiten der Trommel 1 ringförmig begrenzen, abgeführt.After passing through the
Claims (7)
gekennzeichnet durch
ein den Boden der Trommel (1) überdeckendes, dem Pressspalt von der Zuführungseinrichtung (9) Pressgut zuleitendes Leitblech (15),
wobei das Leitblech (15) Schlitze (16) aufweist und zum Vortrieb der Biomasse unterhalb des Leitblechs (15) eine eine Mehrzahl von Mitnehmern (13) aufweisende Dosierwelle (14) angeordnet ist, wobei die Mitnehmer (13) im Betrieb der Walzenpresse durch die Schlitze (16) hindurch greifen.Roller press with a rotatably mounted outer drum (1), one in the outer drum (1) eccentrically arranged, rotatably mounted press roll (2), one of the drum (1) and press roller (2) formed by pressing material feeding feeding device (9) and a discharge device (21) which discharges compressed material, wherein the axis of the press roll (2) is arranged in the lower region of the drum (1) in a sector deviating from the vertical in the direction of the take-off device (21) with respect to the axis of rotation of the drum (1) is
marked by
a baffle (15) covering the bottom of the drum (1) and conveying the material to the press nip from the feed device (9),
wherein the guide plate (15) has slots (16) and for driving the biomass below the guide plate (15) a plurality of drivers (13) having metering shaft (14) is arranged, wherein the drivers (13) in the operation of the roller press through the Grip slots (16).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014117066.0A DE102014117066B3 (en) | 2014-11-21 | 2014-11-21 | roll press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3040192A1 true EP3040192A1 (en) | 2016-07-06 |
| EP3040192B1 EP3040192B1 (en) | 2017-06-14 |
Family
ID=54695464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15194493.1A Active EP3040192B1 (en) | 2014-11-21 | 2015-11-13 | Roller press |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3040192B1 (en) |
| DE (1) | DE102014117066B3 (en) |
| DK (1) | DK3040192T3 (en) |
| ES (1) | ES2637653T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020120862A1 (en) | 2020-08-07 | 2022-02-10 | Christofer Gutmann | dewatering press |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT200003B (en) | 1953-10-26 | 1958-10-10 | Josef Willmes | Roller press, in particular for pressing liquids out of products containing liquids |
| US3220340A (en) * | 1962-09-28 | 1965-11-30 | Ekstroems Maskinaffaer Ab | Apparatus for dewatering liquid-containing material composition, preferably fibrous pulp suspensions |
| DE3218634A1 (en) | 1981-05-22 | 1982-12-23 | Enso-Gutzeit Oy, 00160 Helsinki | Bark press |
| DE3417966A1 (en) | 1983-02-15 | 1985-11-21 | Kone Oy, Helsinki | DRUM PRESS FOR SEPARATING LIQUID FROM A SOLID |
| WO2011035762A1 (en) * | 2009-09-25 | 2011-03-31 | Getproject Gmbh & Co. Kg | Roller press |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2196651A (en) * | 1936-04-16 | 1940-04-09 | Stacom Process Corp | Mechanical dehydrator and roller mill |
| DE725031C (en) * | 1938-05-26 | 1942-09-11 | Kamyr Ab | Rotary filter for liquid-fiber mixtures |
-
2014
- 2014-11-21 DE DE102014117066.0A patent/DE102014117066B3/en not_active Expired - Fee Related
-
2015
- 2015-11-13 DK DK15194493.1T patent/DK3040192T3/en active
- 2015-11-13 EP EP15194493.1A patent/EP3040192B1/en active Active
- 2015-11-13 ES ES15194493.1T patent/ES2637653T3/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT200003B (en) | 1953-10-26 | 1958-10-10 | Josef Willmes | Roller press, in particular for pressing liquids out of products containing liquids |
| US3220340A (en) * | 1962-09-28 | 1965-11-30 | Ekstroems Maskinaffaer Ab | Apparatus for dewatering liquid-containing material composition, preferably fibrous pulp suspensions |
| DE3218634A1 (en) | 1981-05-22 | 1982-12-23 | Enso-Gutzeit Oy, 00160 Helsinki | Bark press |
| DE3417966A1 (en) | 1983-02-15 | 1985-11-21 | Kone Oy, Helsinki | DRUM PRESS FOR SEPARATING LIQUID FROM A SOLID |
| WO2011035762A1 (en) * | 2009-09-25 | 2011-03-31 | Getproject Gmbh & Co. Kg | Roller press |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3040192B1 (en) | 2017-06-14 |
| DE102014117066B3 (en) | 2016-01-28 |
| ES2637653T3 (en) | 2017-10-16 |
| DK3040192T3 (en) | 2017-09-25 |
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