EP4569076A1 - Procédé de fonctionnement d'un dispositif de fermentation - Google Patents

Procédé de fonctionnement d'un dispositif de fermentation

Info

Publication number
EP4569076A1
EP4569076A1 EP22765439.9A EP22765439A EP4569076A1 EP 4569076 A1 EP4569076 A1 EP 4569076A1 EP 22765439 A EP22765439 A EP 22765439A EP 4569076 A1 EP4569076 A1 EP 4569076A1
Authority
EP
European Patent Office
Prior art keywords
stirring devices
stirring
group
driven
container
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.)
Pending
Application number
EP22765439.9A
Other languages
German (de)
English (en)
Inventor
Torsten Baumann
Martin HUMMITZSCH
Thomas Büchner
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.)
Strabag Umwelttechnik GmbH
Original Assignee
Strabag Umwelttechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Strabag Umwelttechnik GmbH filed Critical Strabag Umwelttechnik GmbH
Publication of EP4569076A1 publication Critical patent/EP4569076A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • C12M27/06—Stirrer or mobile mixing elements with horizontal or inclined stirrer shaft or axis
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/20—Degassing; Venting; Bubble traps
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the invention relates to a method for operating a fermentation device of the type specified in the preamble of claim 1.
  • the invention is based on the object of specifying a method for operating a fermentation device, with which energy-saving operation of the fermentation device is possible.
  • the stirring devices are driven in at least two groups by the drive device.
  • Each group of stirring devices includes at least one stirring device.
  • the stirring devices of a first group are driven in at least a first time interval and the stirring devices of a second group are stationary in the first time interval. Accordingly, not all stirring devices of the fermentation device are driven simultaneously in the first time interval. This means that the energy required to operate the stirring devices can be significantly reduced. It has been shown that, while the stirring devices of the second group are at a standstill in the first time interval, there are surprisingly no negative effects on the sediment transport or the destruction of the floating cover. Also This does not negatively affect the maintenance of a plug flow characteristic in the container and the vertical mixing, especially the degassing of the substrate.
  • not all stirring devices are driven over at least 50%, in particular over at least 80%, of the operating time of the fermentation device. It is particularly preferred that all stirring devices are not driven simultaneously at any time. As a result, energy consumption can be significantly reduced compared to operation in which all stirring devices are driven at the same time.
  • the stirring devices of the first group are driven in a second direction of rotation opposite to the first direction of rotation in at least a second time interval and the stirring devices of the second group are stationary in the second time interval.
  • substrate is transported back within the container.
  • the time intervals are preferably designed so that an external return of treated material and a device for preconditioning the substrate or a device for the upstream mixing of fresh substrate with treated material can be completely dispensed with in normal operation. Normal operation is any operation other than commissioning and troubleshooting. During commissioning or troubleshooting, the material treated in the container can be returned.
  • the first time interval is in particular greater than or equal to the second time interval. Because the first time interval is at least as long as the second time interval, sufficient sediment transport at the bottom of the container can be ensured.
  • a preferred arrangement results when the stirring devices are driven in such a way that stirring devices in a group do not follow one another in the direction of the longitudinal axis.
  • the first direction of rotation is preferably aligned such that the stirrer blades move at the bottom of the container in the direction from the first end face to the second end face of the container.
  • the energy requirement of the fermentation device can be further reduced in a simple manner by all stirring devices of the first group and the second group, in particular all stirring devices of the fermentation device, coming to a standstill in a third time interval.
  • Each group of stirring devices includes at least one stirring device. In the first time interval and in particular also in the second time interval, at least one stirring device is at a standstill.
  • Each group preferably includes two to six stirring devices.
  • the time interval over which the stirring devices of a group are driven advantageously corresponds to an integer multiple of half revolutions of the stirring devices. This makes it easy to ensure that the stirring devices are in a defined position when at a standstill, in which they cannot collide with neighboring stirring devices.
  • the integer multiple is preferably from 2 to 10. However, other time intervals for driving the stirring devices can also be advantageous.
  • the time interval over which the stirring devices of a group stand still advantageously corresponds to half a revolution or an integer multiple of half revolutions of the stirring devices. It is preferably provided that the integer multiple is from 2 to 10.
  • the rotational speed of the stirring devices is advantageously set depending on a predetermined nominal speed via a frequency converter.
  • the speed is preferably set in the range from 80% to 100% of the nominal speed.
  • the nominal speed is advantageously 0.5 rpm to 2 rpm, in particular about 1 rpm.
  • other speeds and/or other speed controls can also be advantageous.
  • the substrate is introduced in successive time periods.
  • the introduction time or the amount of substrate is advantageously specified for each period of time.
  • the substrate is preferably not introduced continuously.
  • the introduction time of the substrate is preferably 10% to 60% of the time period.
  • the time period can be, for example, 0.5 h to 2 h, preferably 0.75 h to 1.5 h, particularly preferably about 1 hour.
  • the substrate in the fermentation device is advantageous exclusively through loading and removal and via the stirring devices of the at least one Insertion opening moves to the at least one discharge opening. Additional devices for transporting substrate, in particular sediments of the substrate, are advantageously not provided. This results in a simple structure of the fermentation device.
  • the fermentation device is advantageously a plug flow fermenter.
  • each stirrer blade has a maximum extension to the central axis of the stirring device, the axial distance of the central axis of at least two stirring devices following one another in the direction of the longitudinal axis of the container preferably being less than or equal to the sum the maximum radial extents of the two stirring devices.
  • the sediments are transported in the manner of shifting dunes.
  • a leading stirrer blade piles up a dune, which is removed by the subsequent stirrer blade on the side of the dune facing the discharge opening. This allows sediment to be transported to the bottom of the container in a simple manner without additional equipment.
  • 1a shows a schematic representation of an alternative arrangement of adjacent stirring devices
  • 2 shows a schematic cross section through the container of the fermentation device from FIG. 1
  • the fermentation device comprises a container 3 which has a first end face 9 and a second end face 10.
  • the container 3 has a longitudinal axis 23 which extends through the first end face 9 and the second end face 10.
  • the container 3 is arranged horizontally and the longitudinal axis 23 runs horizontally in the exemplary embodiment.
  • the container 3 has an introduction opening 4 for substrate on the first end face 9 and a discharge opening 5 for treated material on the second end face 10.
  • an exhaust opening 8 for biogas is provided on an overhead container ceiling 7 of the container 3.
  • introduction openings 4, discharge openings 5 and/or extraction openings 8 can also be provided.
  • introduction openings 4 are provided only on the first end face 9 and discharge openings for treated material only on the second end face 10.
  • further insertion openings 4 can be provided between the end faces 9 and 10.
  • the bottom side of the container 3 forms a container base 6.
  • the container base 6 and the container cover 7 are preferably aligned flat and parallel to one another, as shown in FIG. 2.
  • the fermentation device 1 is designed as a so-called plug flow fermenter.
  • the substrate in the container 3 moves horizontally.
  • the substrate is transported by loading and unloading as well as via stirring devices 11, 12, 13, 14, 15, 16, the design of which will be explained in more detail below using the first stirring device 11.
  • the further stirring devices 12 to 16 can be designed accordingly. Further devices for moving substrate in container 3 are advantageously not provided.
  • the first stirring device 11 comprises a stirrer shaft 20, which can be driven to rotate about a central axis 21.
  • the central axis 21 is arranged transversely, preferably perpendicular to the longitudinal axis 23.
  • At least one stirrer blade 22 extends outwards from the stirrer shaft 20.
  • stirrer blades 22 running on opposite sides of the stirrer shaft 20 are provided.
  • the stirrer blades 22 have a maximum radial extension r to the central axis 21 of the associated stirring device.
  • the maximum radial extents r are the same for all stirrer blades 22 of all stirring devices 11 to 16.
  • different maximum radial extensions r for stirrer blades 22 of a stirring device 11 to 16 or for stirrer blades 22 of different stirring devices 11 to 16 can also be advantageous.
  • the central axes 21 of two stirring devices 11 to 16 which follow one another in the direction of the longitudinal axis 23 of the container 3 have an axial distance a.
  • the center distance a is smaller than the sum of the maximum radial extensions r of the stirrer blades 22 of adjacent stirring devices 11 to 16. Because the center distance a is smaller than the sum of the maximum radial extensions r of the adjacent stirring devices 11 to 16, adjacent ones form Stirring devices 11 to 16 have an overlap area 24, which is shown in FIG. 1 for the second stirring device 12 and the third stirring device 13. The overlap area 24 is swept over both by a stirrer blade 22 of the stirring device 12 and by a stirrer blade 22 of the stirring device 13.
  • an approximately dune-shaped sediment heap 25 collects on the container bottom 6 below the overlap area 24.
  • the second stirring device 12 piles up the sediments on the sediment heap 25.
  • sediment is taken away by the subsequent third stirring device 13 and transported away in the direction of the discharge opening 5.
  • Corresponding overlap areas 24 are preferably provided between all adjacent stirring devices 11 to 16. Due to the overlap of adjacent stirring devices 11 to 16, an additional device for transporting sediments can advantageously be dispensed with.
  • FIG. la An alternative arrangement of two adjacent stirring devices is shown schematically in Fig. la for the stirring devices 11 and 12.
  • the center distance a is the same as the sum of the maximum radial extents r of the stirrer blades 22 of adjacent stirring devices 11 to 16. Even with this arrangement, the sediments can still be transported in the manner described above.
  • the first stirring device 11 adjoining the first end face 9 rotates in a first direction of rotation 18.
  • the direction of rotation 18 is directed such that the stirrer blades 22 move on the container bottom 6 from the first end face 9 towards the second end face 10 .
  • the stirrer blades 22 move in the opposite direction, i.e. from the second end face 10 towards the first end face 9.
  • the central axes 21 of the stirrer shafts 20 are aligned horizontally and perpendicular to the longitudinal axis 23 in the exemplary embodiment. All central axes 21 run parallel to one another.
  • the first stirring device 11 By driving the first stirring device 11 in the first direction of rotation 18, substrate, which is supplied via the introduction opening 4, is quickly transported further. This avoids overloading the fermentation device 1 in the loading area.
  • the substrate In normal operation, the substrate is fed directly via the introduction opening 4, without the substrate being conditioned in front of the fermentation device 1 or mixing with material that has already been treated.
  • the fermentation device 1 shown in FIG. 1 has no external feedback. Treated material that has been removed from the container 3 via the discharge opening 5 is therefore not led back to the introduction opening or to a preconditioning device or a compulsory mixer in order to mix it with the fresh substrate, but is completely removed.
  • the treated substrate is returned in the container 3 itself.
  • at least one of the stirring devices 11 to 16 is temporarily driven in a second direction of rotation 19 that is opposite to the first direction of rotation 18.
  • the direction of rotation 19 is shown in FIG. 1 for the second stirring device 12.
  • the drive of the stirring devices 11 to 16 in the first direction of rotation 18 and the second direction of rotation 19 is described in more detail below.
  • the sixth stirring device 16 adjacent to the discharge opening 5 and the second end face 10 is preferably driven in the first direction of rotation 18 during the withdrawal of treated material from the container 3, so that the stirrer blades 22 are adjacent to the container bottom 6 in the direction of the second end face 10 move and thereby promote the sediment transport on the container bottom 6 to the discharge opening 5.
  • Fig. 2 shows schematically a section through the first stirring device 11.
  • the further stirring devices 12 to 16 are preferably designed identically.
  • a drive device 17, for example a drive motor with or without a gear unit, is provided for each stirring device 11 to 16. It can also be provided that a drive device 17 drives several of the stirring devices 11 to 16 or all of the stirring devices 11 to 16 via suitable transmission devices such as belt drives or the like.
  • the fermentation device 1 comprises a control device 27, which appropriately controls the at least one drive device 17. It is provided that none of the drive devices 17 runs continuously, but that the drive devices 17 are only in operation intermittently. As a result, the energy requirement of the fermentation device 1 can be reduced in a simple manner.
  • the drive device 17 includes a frequency converter 28, via which the speed of the stirrer shaft 20 can be easily adjusted.
  • stirrer blades 22 are arranged on a common stirrer shaft 20 in the exemplary embodiment.
  • the stirrer blades 22 are each formed by two outwardly projecting arms 29, which carry a horizontally extending stirring bar 26 at their radially outer end.
  • the stirring bar 26 extends over the entire width b of each stirrer blade 22.
  • a different design of the stirrer blades 22 can also be advantageous.
  • stirrer blades 22 are arranged offset from one another in the direction of the central axis 21. Each stirrer blade 22 therefore moves in its own disc-shaped area around the central axis 21. Based on the sectional view shown in FIG. 2, the stirrer blades 22 of a stirring device 11 to 16 do not overlap. Stirrer blades 22 successive in the direction of the central axis 21 are advantageously arranged on opposite sides of the central axis 21.
  • the stirring devices 11 to 16 are advantageously driven in at least two groups.
  • Each group of stirring devices 11 to 16 preferably comprises at least one, preferably at least two, stirring devices 11 to 16.
  • Figures 3 and 4 show examples of two possible types of control of the stirring devices 11 to 16, in which the stirring devices are divided into two groups.
  • a first group includes the stirring devices 12, 14 and 16 and a second group includes the stirring devices 11, 13 and 15.
  • a first time interval ti in the time sequence of the drive of the stirring devices 11 to 16 shown in FIG. 3, provision is made to drive the stirring devices 12, 14 and 16 in the first direction of rotation 18.
  • the stirring devices 12, 14 and 16 which form the first group, are driven in the second, opposite direction of rotation 19.
  • a third time interval t3 at which the stirring devices 12, 14 and 16 of the first group are at a standstill.
  • the stirring devices 11, 13 and 15 of the second group stand still during the first time interval ti, the second time interval t2 and the third time interval t3.
  • the second time interval t2 is followed by a further third time interval t3, at which time all stirring devices 11 to 16 of both groups are again at a standstill.
  • a fourth time interval U which follows, the stirring devices 11, 13, and 15 of the first group are driven in the first direction of rotation 18.
  • substrate can be fed into the container 1 via the entry opening 4.
  • treated material can be withdrawn from the discharge opening 5 via the discharge opening 5.
  • the fourth time interval U is again followed by a third time interval t3, during which all stirring devices 11 to 16 stand still.
  • the stirring devices 11, 13 and 15 of the second group are driven in a second direction of rotation 19.
  • the supply of substrate and the withdrawal of treated material is independent of which of the groups of stirring devices 11 to 16 is driven or is stationary.
  • substrate can be supplied over a certain period of time in each time interval ti, t2, U, ts.
  • the first stirring device 11 is advantageously driven in the first direction of rotation 18 independently of the further stirring devices 13 and 15 of the group, while the substrate is fed.
  • the sixth stirring device 16 is advantageously driven in the first direction of rotation 18 independently of the further stirring devices 12 and 14 of the group, while treated material is drawn off.
  • Fig. 4 shows an alternative drive of the stirring devices 11 to 16.
  • the stirring devices 12, 14 and 16 of the first group are driven in the first direction of rotation 18, specifically in the first time interval ti. This is followed by a third time interval t3, during which all stirring devices 11 to 16 stand still.
  • the stirring devices 11, 13 and 15 of the second group are in driven in the first direction of rotation 18.
  • a third time interval t3, during which none of the stirring devices 11 to 16 is driven is driven.
  • the stirring devices 12, 14 and 16 of the first group are driven in the second direction of rotation 19 in a second time interval t2.
  • the stirring devices 11, 13, and 15 of the second group are driven in the second direction of rotation 19 in the fifth time interval ts. While the stirring devices in one group are driven, the stirring devices in the other group are advantageously stationary. Overall, this results in a comparatively short operating time for each stirring device 11 to 16, whereby the energy requirement of the fermentation device 1 can be significantly reduced.
  • the first time interval ti at which the stirring devices 12, 14 and 16 are driven in the first direction of rotation 18, is preferably greater than or equal to the second time interval t2, in which the stirring devices 12, 14, 16 are driven in the opposite direction of rotation 19 become.
  • Fig. 1 shows, successive stirring devices are assigned to different groups.
  • the time intervals ti, t2, U and ts, at which the stirring devices of a group are driven, advantageously correspond to integer multiples of half revolutions of the stirring devices 11 to 16.
  • the integer multiples are advantageously from 2 to 10.
  • the third time interval t3, during which the stirring devices 11 to 16 of both groups are at a standstill, preferably corresponds to half a revolution or an integer multiple of half revolutions of the stirring devices 11 to 16.
  • the integer multiple is advantageously from 2 to 6.
  • the speed of rotation of the stirring devices 11 to 16 can advantageously depend on the substrate introduced be set.
  • the frequency converter 27 shown in FIG. 2 is used for this purpose.
  • the speed is advantageously set in the range from 80% to 100% of the nominal speed.
  • the nominal speed is preferably 0.5 rpm to 2 rpm, particularly preferably about 1 rpm
  • the stirrer blades 22 therefore move comparatively slowly through the substrate in the container 3.
  • the supply of the substrate via the introduction opening 4 advantageously takes place virtually continuously in successive time periods d.
  • the supply is advantageously carried out once in each period d.
  • the introduction time e or the amount of substrate per time period d is advantageously predetermined.
  • 3 shows an example of a time period d, which includes the drive of each stirring device 11 to 16 exactly once in each direction of rotation.
  • the introduction of substrate takes place over an introduction period e, which is 10% to 60% of the time period d.
  • the introduction time e corresponds to the fourth time interval U in which the first stirring device 11 is driven in the first direction of rotation 18.
  • the time period d is advantageously 0.5 h to 2 h, in particular 0.75 h to 1.5 h, preferably about 1 hour.
  • the stirring devices 11 to 16 move the substrate in the container 3 and mix the substrate.
  • a different choice of time period d and introduction time e can also be advantageous.
  • the time period d is preferably significantly larger than the time intervals ti to ts.
  • the time intervals ti, t2, U and ts, during which the stirring devices of a group are driven, are advantageously an integer multiple of half revolutions of the stirring devices 11 to 16.
  • the integer multiple is preferably from 2 to 10.
  • the time intervals ti to ts, while in which the stirring devices of a group are at a standstill are advantageously an integer multiple of half revolutions of the stirring devices 11 to 16.
  • the integer multiple is preferably from 2 to 10.
  • the rotational speed of the stirring devices 11 to 16 is advantageously 80% to 100% of a nominal speed.
  • the nominal speed is advantageously 0.5 rpm. to 2 rpm, preferably 1 rpm.
  • the time period d is advantageously significantly larger than the time intervals ti to ts.
  • time intervals ti to ts are the same size. Time intervals ti to ts of different sizes can also be advantageous. Time intervals t4 and ts are advantageous, during which the stirring devices of one group are in the second Direction of rotation 19 are driven, not greater than the time intervals ti and t2, during which the stirring devices of a group are driven in the first direction of rotation 18.
  • the stirring devices 11 to 16 By suitable choice of the time intervals ti to ts and suitable division of the stirring devices 11 to 16 into groups of at least one, preferably two to six stirring devices and due to the at least temporary drive of at least one stirring device 11 to 16 in the second direction of rotation 19, the return of Substrate within the container 3. External return of treated material and preconditioning are not required in normal operation. This enables a fermentation device 1 with a simple structure and low energy requirements during operation.
  • the stirring devices 11 to 16 cause the vertical mixing of the substrate, the destruction of the floating cover and distribution as well as the transport of sediments of the substrate.
  • the supply of substrate into the container 4 takes place virtually continuously.
  • the stirring devices 11 to 16 are in intermittent operation and are only controlled in accordance with the program for driving the stirring devices 11 to 16 stored in the control device 27.
  • the stirring devices 11 to 16 are advantageously only in operation for a short time.
  • the first stirring device 11 and the last stirring device 16 can be driven additionally and independently of the other stirring devices of the respective group during the introduction of substrate and removal of treated material and can thus have longer operating times than the other stirring devices.
  • the dry matter content of the substrate supplied into the container 2 is advantageously less than 45% by weight, in particular 30% by weight to 45% by weight.
  • At The fermentation device 1 is advantageously a fermentation device for continuous dry fermentation.
  • the at least temporary drive of at least one stirring device 11 to 16 in the second direction of rotation 19 enables the plug flow characteristics in the container 3 to be maintained and vertical mixing and degassing of the substrate. The sediment transport at the container bottom 6 and the destruction of the floating blankets in the container 3 remain guaranteed.
  • the substrate supplied to the fermentation device 1 advantageously has a dry matter content of at least 20% by weight.
  • the substrate supplied to the fermentation device 1 includes in particular different domestic or commercial organic waste such as separately collected organic waste, organic-enriched fine fractions from mixed household waste, green waste or separately collected food leftovers from households or restaurants.
  • the substrate supplied to the fermentation device 1 includes waste with seasonally or constantly changing properties or compositions and/or with larger proportions of impurities, such as non-fermentable hard or inert materials such as stones, glass, ceramics, sand or the like.
  • the substrate supplied to the fermentation device 1 also includes in particular higher viscosity, structurally rich or fibrous substrates from agriculture, landscaping, trade and industry, such as straw, grass, silage or other cellulose-containing material streams, for example from the paper industry, and/or dewatered ones sewage sludge.

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  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
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Abstract

Procédé de fonctionnement d'un dispositif de fermentation (1) comportant une cuve allongée (3) et plusieurs dispositifs d'agitation (11, 12, 13, 14, 15, 16), comprenant les étapes suivantes : - introduction du substrat contenant des matières organiques par l'intermédiaire d'au moins une ouverture d'introduction (4), - déplacement et mélange du substrat dans la cuve (3) au moyen des dispositifs d'agitation rotatifs (11, 12, 13, 14, 15, 16), - évacuation des matières traitées par l'intermédiaire d'au moins une ouverture d'évacuation (5), et - extraction du biogaz par l'intermédiaire d'au moins une ouverture d'extraction (8). Il est prévu que les dispositifs d'agitation (11,12,13, 14, 15, 16) soient entraînés par un dispositif d'entraînement (17) en au moins deux groupes. Chaque groupe comprend au moins un dispositif d'agitation (11, 12, 13, 14, 15, 16). Les dispositifs d'agitation (11, 13, 15) d'un premier groupe sont entraînés dans au moins un premier intervalle de temps (t1). Des dispositifs d'agitation (12, 14, 16) d'un deuxième groupe sont fixes dans le premier intervalle de temps (t1).
EP22765439.9A 2022-08-10 2022-08-10 Procédé de fonctionnement d'un dispositif de fermentation Pending EP4569076A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/072479 WO2024032884A1 (fr) 2022-08-10 2022-08-10 Procédé de fonctionnement d'un dispositif de fermentation

Publications (1)

Publication Number Publication Date
EP4569076A1 true EP4569076A1 (fr) 2025-06-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22765439.9A Pending EP4569076A1 (fr) 2022-08-10 2022-08-10 Procédé de fonctionnement d'un dispositif de fermentation

Country Status (5)

Country Link
US (1) US20250179406A1 (fr)
EP (1) EP4569076A1 (fr)
CN (1) CN119866369A (fr)
IL (1) IL318872A (fr)
WO (1) WO2024032884A1 (fr)

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DE102005057979A1 (de) * 2005-12-05 2007-06-06 Linde-Kca-Dresden Gmbh Fermentationseinrichtung und Verfahren zur Gewinnung von Biogas
DE102005057978A1 (de) * 2005-12-05 2007-06-06 Linde-Kca-Dresden Gmbh Fermentationseinrichtung mit gekoppeltem Substrat- und Sedimenttransport und Verfahren zum Betrieb der Fermentationseinrichtung
DE202006004982U1 (de) * 2006-03-27 2006-05-24 Schmack Biogas Ag Rührwerk für Fermentationsbehälter
DE202007009095U1 (de) * 2007-06-26 2008-11-13 Agratec Ag Fermentationsanlage
DE102018000927A1 (de) * 2018-02-02 2019-08-08 Michael Niederbacher Biogasanlagen-Fermenterbehälter, Serviceeinrichtung zur Montage an einem Biogasanlagen-Fermenterbehälter sowie Verfahren zum Betreiben eines Biogasanlagen-Fermenterbehälters
DE102019109999A1 (de) * 2019-04-16 2020-10-22 Michael Niederbacher Pfropfenstrom-Fermenter für eine Biogasanlage

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US20250179406A1 (en) 2025-06-05
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