WO1996018590A1 - Dispositif de formation de compost a partir d'une matiere biodegradable - Google Patents
Dispositif de formation de compost a partir d'une matiere biodegradable Download PDFInfo
- Publication number
- WO1996018590A1 WO1996018590A1 PCT/EP1994/004118 EP9404118W WO9618590A1 WO 1996018590 A1 WO1996018590 A1 WO 1996018590A1 EP 9404118 W EP9404118 W EP 9404118W WO 9618590 A1 WO9618590 A1 WO 9618590A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- base plate
- conveyor
- along
- ventilation
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/95—Devices in which the material is conveyed essentially vertically between inlet and discharge means
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/957—Apparatus therefor using two or more serially arranged devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Definitions
- the invention relates to a device for converting, in particular composting, biodegradable material with at least one container rising above a base plate, which has a loading opening at the top for supplying the material and the side wall of which extends from top to bottom up to a discharge device arranged above the base plate for the material passing through the container from top to bottom.
- the discharge device is designed in the form of a so-called scraper floor.
- This consists of a number of scraper bars which can be moved back and forth in the conveying direction, which rise approximately vertically at their front edge, as seen in relation to the conveying direction, and drop in a wedge shape towards their rear edge.
- the scraper bars slide with their lifting movement pointing in the conveying direction, the material to be discharged in front of them, whereas with the return stroke movement pointing opposite to the conveying direction, the scraper strips take essentially no material with them due to their shape wedge-shaped towards the rear edge.
- the reciprocating movement of the scraper floor strips of the scraper floor which extends over the entire cross-section of the container, thus results in a material transport directed in the conveying direction along the base plate laterally out of the container.
- the invention is based on the object of improving a device of the type mentioned at the outset such that, with simple construction, a cross-sectionally uniform stratification of the material passing through the container is brought about.
- the discharge device (7) has a conveyor device (11) which can be moved along the base plate over its area corresponding to the container cross-section and which extends from at least one undercarriage (12, 12 •) arranged outside the container cross-section. extends cantilevered through the cross-section of the container with the conveying direction directed along the base plate (2) and transversely to the travel movement path.
- the conveyor provided in the device according to the invention thus cantilevers through the between the Bottom plate and the lower edge of the side wall existing space and, while sweeping this space during its movement, removes the material to be discharged evenly from the lowest material layer of the material column passing through the container through its conveyor operation. Since the conveying direction extends transversely to the travel path of the conveying device, the conveyed material is not pushed in front of the conveying device, but is conveyed transversely to it, as a result of which the removal of material from the bottom layer and a uniform adjustment of the entire column with regard to the traveling direction of the material column Layering in the container can be further favored.
- the latter is of great importance for an effective course of the composting process during the passage of the material column through the container, since various reaction stages, in particular zones of different temperatures, are run through along the traveling direction.
- the undercarriage carrying the conveying device and enabling its movement and drive is arranged outside the area covered by the cross-section of the container and therefore moves in a zone free of the material to be composted, so that no high demands are placed on its structural design are.
- the chassis is also easily accessible from the outside for maintenance purposes. The latter even applies to the entire discharge device because, owing to its movability, it can be moved out of the space delimited between the lower end of the container side wall and the base plate and is therefore freely accessible.
- a preferred embodiment of the invention is characterized in that the conveying device is supported on two trolleys, one of which is arranged at each of the two opposite end regions of the conveying device which project beyond the container cross section.
- a further advantageous embodiment of the invention is that the travel path is linear.
- the discharge device thus moves between the lower edge of the side wall and the base plate along a straight travel path through the cross-section of the container, the material removed from the lowest layer of material being conveyed away transversely to the straight travel path.
- Another advantageous measure consists in that the undercarriage is guided along at least one guide rail which determines its travel path. This positive guidance of the undercarriage or undercarriages on a respective guide rail enables the discharge device to be driven and steered along the desired travel path in a particularly simple manner.
- a stationary conveyor device which extends along the movement path of the discharge area of the movable conveyor device and takes over its material to be conveyed. This takes into account the fact that the discharge area of the conveying device which ejects the material removed from the lowest layer also changes locally in accordance with its travel path.
- the stationary conveying device extending along the movement path of the discharge area takes over independently of the respective local If the conveying device is in the position of the material being discharged, this transfer of the material to be conveyed can take it to a stationary delivery point of the stationary conveying device.
- any movable conveying device is suitable for the device according to the invention, which can take over the material by attacking the lowest layer of material and can convey it away transversely to the travel movement path.
- the movable conveyor is a moving screw conveyor. The construction of such snails is simple and robust in operation.
- the homogenization of the material discharge which is desirable for a uniform stratification, over the entire container cross section can be further increased by the fact that the conveying volume, which is limited between adjacent screw flights of the conveying screw, increases along the conveying direction. This measure also largely precludes possible irregularities and / or compression effects in the direction of conveyance perpendicular to the travel path when the material is removed from the bottom layer and the material removed.
- the screw conveyor has a constant pitch and the radius of the worm threads increases along the conveying direction.
- the screw conveyor can also be designed for this purpose in such a way that the radius of the screw flights is constant and the pitch increases along the conveying direction.
- Such devices for composting in which more than one container is provided, can be used particularly advantageously by the invention in that a common discharge device is provided for the containers, the travel movement path of which corresponds to areas of the base plate corresponding to all container cross sections extends.
- the device has two or more containers which are loaded with material, for example, in parallel or in a cascade-like connection.
- the travel path of the common discharge device runs in such a way that the discharge device moves in succession between the respective lower edge of the side wall of the container and the base plate located underneath in a cyclical sequence of movements and thereby causes a uniform material discharge from the bottom layer in each case. Only a single discharge device then needs to be provided for devices with two or more containers.
- both aerobic composting processes and anaerobic conversion processes can be carried out with the devices for converting biodegradable material. Both in the former case, in which air is passed through the device in countercurrent to the column of material passing through it, and in the latter case, in which the material travels through the container in the absence of air, there is an escape or an entry to avoid air in the driving area of the conveyor through the container.
- the movable conveying device, and possibly also the stationary conveying device is arranged within an airtight cover which seals the lower region of the container from the outside atmosphere. Leaks of this hermetic see closure in the area of the possibly existing stationary conveyor, which has a stationary discharge area for the conveyed material, can also be avoided by a suitable design of this discharge area with locks or only temporarily opening flaps.
- devices used for composting in the proper sense in which air is supplied to the container in the region of its base plate in countercurrent to the material passing through the container, are designed according to the invention in such a way that within a region facing the container, the Base plate along the plane of which extending ventilation channels connected to an air supply are formed with ventilation slots open towards the top of the container.
- the area of the base plate corresponding to the overlying container cross-section acts as a ventilation floor, from which the ventilation air is introduced into the container.
- the exhaust air is sucked off in the upper region of the container and, for example, processed in downstream bio-filters for release into the atmosphere.
- the supply of the ventilation air provided, for example, by a pressure blower to the generally numerous ventilation channels is advantageously designed in such a way that the ventilation channels open at an edge of the area of the base plate into an adjacent ventilation chamber to which an air supply line is connected connected.
- the ventilation chamber and the adjoining mouths of the ventilation channels thus form a distributor in a simple manner, which distributes the ventilation flow supplied to the individual ventilation channels.
- the ventilation chamber has a sewage pipe connected to it. Since excess moisture in the material migrating through the container can penetrate through the ventilation slots into the ventilation channels and flow from there into the ventilation chamber, the waste water line serves to remove the water which is produced in this way.
- Fig. 1 is a schematic, partially sectioned
- FIG. 2 is a schematic, partially sectioned view perpendicular to the view of FIG. 1 from the narrow side of the device
- FIG. 5 shows a top view of the bottom area of the device.
- two containers 3 are arranged next to one another on a base plate 2 which is slightly raised above the ground level 1 and whose cross section parallel to the base plate 2 is circular in the exemplary embodiment shown in FIG. 5.
- the side wall 4 of the container rising above the base plate 2 which in the exemplary embodiment shown has the shape of a cylinder jacket with a vertical axis 5, extends with its lower horizontal edge 6 to a free distance from the base plate 2, so that Between the base plate 2 and the lower edge 6, a free space allowing the free passage of a discharge device 7 is limited.
- the container 3 is suspended with its side wall 4 on a supporting cover 8, which encloses the lower, bottom area of the device as a whole.
- the container 3 is provided with thermal insulation 10 both on its side wall 4 and on its upper, horizontal lid 9.
- the discharge device 7 has a moving screw conveyor 11, which is particularly visible in FIGS. 2 and 5 and whose axial length is greater than the horizontal diameter of the container 3. It is only on its two axial end regions arranged outside the container cross-section on each chassis 12, 12 'supported and rotatably supported, the Rotary drive is arranged on the chassis 12 ′ pointing towards the viewer in FIG. 1 and on the right in FIG. 2.
- the two undercarriages 12, 12 ' are within the area enclosed by the cover 8, but outside the area below the cross section of the container on guide rails 13, 13' along a line extending parallel to the connecting straight line of the axes 5 of the container 3 Movement trajectory guided ge. As can be seen from FIG.
- the drive of the undercarriages 12, 12 'for their linear travel movement along the guide rails 13, 13' can be achieved by means of traction chains which are driven all the way over the entire length of the guide rails 13, 13 14, 14 'follow.
- the screw conveyor 11 moves in a reciprocating linear movement between the ends of the guide rails 13, 13 ′ along the base plate 2 through the space of the containers 3 defined between the latter and the lower edge 6 of the side wall 4. Material in the containers 3 is conveyed by the rotation of the moving conveyor screw 11 in its axial direction transversely to its travel path to a discharge area 15 located outside the container cross section.
- a stationary conveyor device 16 which is also designed in the form of a screw conveyor, which is arranged inside the cover 8 below the discharge area 15 of the traveling screw conveyor 11 and extends extends axially parallel to the guide rails 13, 13 '.
- the stationary conveying device 16 thereby takes over the material discharged from the moving screw conveyor 11 and leads it to its discharge area 17 arranged outside the cover 8.
- the containers 3 are filled from above through loading openings 18 provided in the covers 9, to which the material in the illustrated embodiment of a likewise by a screw conveyor formed horizontal conveyor 19 is supplied.
- the material to be subjected to the biological conversion is filled with the horizontal conveyor 19 into the containers 3 from above, the flow of material to the individual containers 3 being able to be controlled by the closure slide 20, shown schematically in FIG. 2, at the upper loading openings 18.
- schematically illustrated distribution devices 21, which can also be designed to be adjustable in a manner not shown in order to adapt to changing filling levels, ensure that they are evenly filled horizontally due to their rotation around the axis 5.
- the screw conveyor 11 passing through the bottom of the container 3
- the material is evenly removed from the underside of the container 3 and discharged transversely to the travel path to the stationary conveyor 16. Consequently, a horizontally uniformly layered material column is set in the containers 3, which column passes through the containers 3 from top to bottom.
- the containers 3 therefore have different, horizontally layered reaction zones from top to bottom, which are distinguished in particular by the different temperatures generated in the biological reaction reactions.
- FIG. 3 exemplary embodiments of the migrating screw conveyor 11 schematically shown in FIG. 2 are shown in more detail.
- the screw conveyor 11 has a constant pitch and the radius of the screw flights 22 is also constant. As a result, a constant delivery volume is limited between adjacent screw flights 22.
- the exemplary embodiments according to FIGS. 3 (b) to (d) are designed in such a way that the respective between adjacent screw flights 22 limited conveying volume increases along the conveying direction (arrow in FIG. 3 (c)), in order to bring about an even greater uniformity of the discharge of the slipping material in the conveying direction.
- the pitch of the screw conveyor 11 increases continuously in the conveying direction while the radius of the screw flights 22 remains the same.
- FIG. 3 (d) shows an embodiment in which the radius of the screw flights 22 increases continuously, but not linearly, with the pitch changing, the increase towards the discharge area 15 becoming weaker.
- the cover 8 supporting the containers 3 closes the lower region of the containers 3, including the stationary conveying device 16, through which the moving screw conveyor 11 travels, in an airtight manner against the outside atmosphere.
- the device is therefore suitable for subjecting the material to an anaerobic treatment, the closure slides 20 at the upper feed openings 18 ensuring that there is no air in the upper region of the containers 3.
- a particularly important application of the device is to carry out aerobic composting processes, in which air is passed through the containers 3 in countercurrent to the material which is passing through them, the exhaust air being at the top of the containers 3, for example at one in FIG 2 schematically indicated suction opening 24, removed and fed, for example, to a bio-filter for a treatment process, which allows the processed exhaust air to be released into the atmosphere.
- a container located below the container 3 and at least over the container cross sections extending area of the base plate 2 is designed as a ventilation base 25.
- this consists of square air plates 26 which are attached to one another on the end face and in which free-venting ventilation channels 28 extend along the plane of the base plate 2 on the end faces 27.
- the ventilation channels 28, which run in two mutually perpendicular directions and are connected to one another at their respective intersection points, are directed upwards to the containers through ventilation slots which are provided in the top side of the air plates 26 facing the containers 3 3 open, whereby the ventilation air supplied to the ventilation channels 28 can flow into the container 3.
- the ventilation channels 28 open out on at least one exposed end face 29 of the ventilation base 25 into an adjacent ventilation chamber 30, to which an air supply line 31 is connected, which is supplied with air by a pressure blower (not shown).
- a pressure blower not shown
- the ventilation channels 28 are closed, for example, by covers.
- the ventilation channels 28 are then freely accessible from the outside and can be flushed with pressurized water, for example from a pressure hose, if they are dirty.
- the ventilation chamber 30 is provided with a drain line 32 which is led out of the cover 8.
- the stationary conveying device 16 serving to convey the discharged material can also be used for the purpose of supplying the supplied material to be subjected to the conversion.
- the discharge area 17 The opposite end of the conveyor screw forming the stationary conveying device 16 is also led out of the cover 8 to form a feed area 33, the feed funnel 34 of the feed area 33 being provided with flaps or locks (not shown in more detail), by means of which it is ensured that the airtight seal of the interior enclosed by the cover 8 is practically maintained.
- a discharge conveyor 35 connects to the discharge area 17 of the stationary conveying device 16 and transfers the material conveyed by the stationary conveying device 16 to the upper horizontal conveyor 19, provided the latter is switched to its conveying mode.
- the horizontal conveyor 19 is at a standstill, on the other hand, the material supplied by the ascending conveyor 35 flows, as can be seen in particular from FIG. 2, into an obliquely downward slide 36, at the lower end of which a further horizontal conveyor 37 for transferring the material to one Tapping point is arranged.
- Appropriate operational control of the traveling screw conveyor 11, the stationary conveyor 16 and the upper horizontal conveyor 19 means that both fresh material can be transported directly from the feed area 33 to the upper feed openings 18 and introduced into the container 3 and by switching on the traveling conveyor screw 11 the material discharged from the containers 3 is admixed. If, on the other hand, the upper horizontal conveyor 19 is switched off while maintaining the operation of the stationary conveyor 16 and possibly the moving conveyor screw 11, the material passes from the ascending conveyor 35 via the chute 36 and the horizontal conveyor 37 to the removal point.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Screw Conveyors (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP1994/004118 WO1996018590A1 (fr) | 1994-12-12 | 1994-12-12 | Dispositif de formation de compost a partir d'une matiere biodegradable |
| AU13134/95A AU1313495A (en) | 1994-12-12 | 1994-12-12 | Device for composting biologically degradable material |
| EP95904454A EP0813511A1 (fr) | 1994-12-12 | 1994-12-12 | Dispositif de formation de compost a partir d'une matiere biodegradable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP1994/004118 WO1996018590A1 (fr) | 1994-12-12 | 1994-12-12 | Dispositif de formation de compost a partir d'une matiere biodegradable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996018590A1 true WO1996018590A1 (fr) | 1996-06-20 |
Family
ID=8165924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1994/004118 Ceased WO1996018590A1 (fr) | 1994-12-12 | 1994-12-12 | Dispositif de formation de compost a partir d'une matiere biodegradable |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0813511A1 (fr) |
| AU (1) | AU1313495A (fr) |
| WO (1) | WO1996018590A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1408022A1 (fr) * | 2002-10-07 | 2004-04-14 | VKW Anlagenbau und Umwelttechnik GmbH | Procédé pour faire fonctionner une installation à composter à plusieurs étapes et installation à composter correspondante |
| US20100184176A1 (en) * | 2008-02-01 | 2010-07-22 | Mitsubishi Heavy Industries, Ltd. | Biomass hydrothermal decomposition apparatus, method thereof, and organic material production system using biomass material |
| US9238827B2 (en) | 2008-02-01 | 2016-01-19 | Mitsubishi Heavy Industries Mechatronics Systems, Ltd. | Biomass hydrothermal decomposition apparatus and method |
| US10792588B2 (en) | 2008-02-01 | 2020-10-06 | Mitsubishi Hitachi Power Systems Environmental Solutions, Ltd. | Organic material production system using biomass material and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE946547C (de) * | 1953-09-22 | 1956-08-02 | Willard L Morrison | Verfahren und Vorrichtung zur Kompostierung von organischen Duengermassen |
| FR1549321A (fr) * | 1967-09-12 | 1968-12-13 | ||
| DE2723929A1 (de) * | 1976-05-26 | 1977-12-15 | Locom S A | Verfahren und vorrichtung zur kompostierung von organischen abfaellen |
| US4236910A (en) * | 1979-01-12 | 1980-12-02 | Armerad Betong Vagforbattringar Ab | Method of biologically decomposing organic material, and apparatus for carrying out the method |
| FR2473038A1 (fr) * | 1980-01-08 | 1981-07-10 | Traitement Indl Gadoues | Installation pour la transformation de dechets organiques en compost |
-
1994
- 1994-12-12 EP EP95904454A patent/EP0813511A1/fr not_active Withdrawn
- 1994-12-12 AU AU13134/95A patent/AU1313495A/en not_active Abandoned
- 1994-12-12 WO PCT/EP1994/004118 patent/WO1996018590A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE946547C (de) * | 1953-09-22 | 1956-08-02 | Willard L Morrison | Verfahren und Vorrichtung zur Kompostierung von organischen Duengermassen |
| FR1549321A (fr) * | 1967-09-12 | 1968-12-13 | ||
| DE2723929A1 (de) * | 1976-05-26 | 1977-12-15 | Locom S A | Verfahren und vorrichtung zur kompostierung von organischen abfaellen |
| US4236910A (en) * | 1979-01-12 | 1980-12-02 | Armerad Betong Vagforbattringar Ab | Method of biologically decomposing organic material, and apparatus for carrying out the method |
| FR2473038A1 (fr) * | 1980-01-08 | 1981-07-10 | Traitement Indl Gadoues | Installation pour la transformation de dechets organiques en compost |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1408022A1 (fr) * | 2002-10-07 | 2004-04-14 | VKW Anlagenbau und Umwelttechnik GmbH | Procédé pour faire fonctionner une installation à composter à plusieurs étapes et installation à composter correspondante |
| US20100184176A1 (en) * | 2008-02-01 | 2010-07-22 | Mitsubishi Heavy Industries, Ltd. | Biomass hydrothermal decomposition apparatus, method thereof, and organic material production system using biomass material |
| US8980060B2 (en) * | 2008-02-01 | 2015-03-17 | Mitsubishi Heavy Industries Mechatronics Systems, Ltd. | Biomass hydrothermal decomposition apparatus, method thereof, and organic material production system using biomass material |
| US9238827B2 (en) | 2008-02-01 | 2016-01-19 | Mitsubishi Heavy Industries Mechatronics Systems, Ltd. | Biomass hydrothermal decomposition apparatus and method |
| US10792588B2 (en) | 2008-02-01 | 2020-10-06 | Mitsubishi Hitachi Power Systems Environmental Solutions, Ltd. | Organic material production system using biomass material and method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1313495A (en) | 1996-07-03 |
| EP0813511A1 (fr) | 1997-12-29 |
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