EP2475762A2 - Procédé et dispositif de traitement de substances fermentables - Google Patents

Procédé et dispositif de traitement de substances fermentables

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Publication number
EP2475762A2
EP2475762A2 EP10752558A EP10752558A EP2475762A2 EP 2475762 A2 EP2475762 A2 EP 2475762A2 EP 10752558 A EP10752558 A EP 10752558A EP 10752558 A EP10752558 A EP 10752558A EP 2475762 A2 EP2475762 A2 EP 2475762A2
Authority
EP
European Patent Office
Prior art keywords
tank
fermentation
mixing
container
digestate
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.)
Withdrawn
Application number
EP10752558A
Other languages
German (de)
English (en)
Inventor
Seine Roelofs
W.J.H. Kuster
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.)
JWF BEHEER BV
ROMIL BEHEER BV
Original Assignee
JWF BEHEER BV
ROMIL BEHEER BV
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 JWF BEHEER BV, ROMIL BEHEER BV filed Critical JWF BEHEER BV
Publication of EP2475762A2 publication Critical patent/EP2475762A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023—Methane
    • 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/34—Internal compartments or partitions
    • 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/36—Means for collection or storage of gas; Gas holders
    • 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
    • C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/04—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
    • 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
    • C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/12—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by pressure
    • 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
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/06—Means for pre-treatment of biological substances by chemical means or hydrolysis
    • 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 present invention relates to a process for the treatment of fermentable organic substances comprising their anaerobic fermentation in at least one fermentation tank and means for mixing the digestate, wherein the supplied fresh digestate is first fed to a mixing container, in which the digestate mixed, optionally crushed and one thick slurry is mixed and this mixture is then fed to a fermentation tank for further fermentation.
  • the subject matter of the present invention is furthermore an apparatus for use in a method of the aforementioned kind. Due to the expected exhaustion of natural oil and natural gas resources in the near future, one is looking for new energy sources that can be used permanently. Particularly interesting are energy sources that have a lower potential for danger than nuclear power and that can be used without damaging the climate.
  • biomass for example, manure can be used, which is obtained in large quantities in cattle-rearing farms.
  • sewage sludge, manure, biowaste, leftovers or biomass can be processed from purpose-grown energy crops.
  • other organic waste of any kind can be mixed into the biomass.
  • the biogas is then released and the electricity is fed into the grid.
  • today biogas is also increasingly being fed into the public gas grid after gas treatment (methane enrichment).
  • the treatment of the fermentation takes place in mostly larger containers in which initially a hydrolysis takes place in which the biopolymers are enzymatically broken down into smaller components such as fatty acids, sugars, amino acids, which then in the subsequent fermentation of anaerobic bacteria to small organic acids and finally to Be implemented acetic acid. From the acetic acid is then formed in the further reaction methane.
  • agitators for example immersion agitators
  • immersion agitators are predominantly used in the state of the art today.
  • agitators for example immersion agitators, which are mechanically moved up and down in the container.
  • a biogas fermenter in which an axial agitator for circulating the biomass is arranged in the digester outside the actual fermenter.
  • biomass is sucked from the plenum in circulation pipes, mixed by an arranged in the tube agitator and pumped back into the fermenter.
  • agitators located within the digester space itself may be detrimental.
  • the inhomogeneity and toughness of the biomass in the digester causes problems in the circulation by means of conventional agitators.
  • the solution described here proposes to move the agitator into the area outside the digester.
  • a biogas plant in which a plurality of annular fermentation tanks are arranged concentrically with each other.
  • the main fermenter is concentric inside and the digestate then passes into a radially outer annular channel container, which serves as Nachfermenter.
  • the containers are separated from each other.
  • the digestate passes through the intermediate ring wall from the main fermenter open at the top directly into the secondary fermenter or is pumped from one pump located above the container from one into the other container.
  • the containers have a common gas reservoir above the container compartments, which are separated from one another only by intermediate walls.
  • no mixing container is used in the sense of the present invention.
  • the fermentation room is mainly used for biogas production, and the digestate only reaches the fermentation area after it has largely fermented.
  • both containers are open at the top and connected to each other via a common gas bell.
  • the calming room here contains a fixed bed reactor and has the task of returning active biomass still present in the fermentation material by overflowing back into the fermentation tank and returning it to it.
  • mixing containers are provided.
  • a breiförmiges material is pumped into a special disk reactor, which consists of a horizontal tube in which there is a motor-driven shaft with perforated discs, wherein in this disc reactor biogas production takes place.
  • a biogas plant is described with an outer container and an inner container arranged concentrically within this, wherein in addition a radially extending partition between both containers is provided.
  • the two containers have a common gas space above the slurry level and via appropriate devices such as a circulation line and an overflow is a direct transfer of the fermentation from the inner to the outer container and vice versa for the purpose of mixing provided.
  • a circulation line and an overflow is a direct transfer of the fermentation from the inner to the outer container and vice versa for the purpose of mixing provided.
  • German patent DE 10 96 754 C it is generally known to use a vacuum pressure pump for conveying media containing high solids such as manure. the, by means of which the medium sucked, filled into a container and from this by pressure can be pushed out.
  • the cited document refers to slurry tankers by means of which liquid manure for fertilization can be applied to fields and contains no suggestion for the use of such pumping devices in connection with biogas plants.
  • the object of the invention is to provide a method and a device for the treatment of organic substances of the type mentioned above, which (s) with structurally simple technical means effective mixing of the organic substances or the fermentation material already in the phase before the feed allows for cylindrical container or fermentation tank. Furthermore, the aim is to supply the fermentation tank as thick and homogeneous medium with the lowest possible water content, so as to increase the yield in biogas production.
  • the digestate after a certain residence time by means of a vacuum pressure pumping system conveyed out of the mixing container and then conveyed into the fermentation tank.
  • the organic products to be treated are thus first supplied to the annular mixing tank, which is separated by a wall from the actual tank, in particular fermentation tank, which has the advantage that the fermentation process in the main tank is independent of the mixing process.
  • the gas space above the fermentation tank is completely separate from the gas space of Anmisch experiments.
  • the mixing container can, for example, be smaller in volume, in particular substantially smaller, than the container (fermenting container).
  • the new material to be treated is effectively mixed in this mixing container and only after a defined period container (fermentation tank) supplied.
  • a further advantage is obtained if, according to a preferred development of the method according to the invention, the weight of the substance quantity taken from the mixing container and / or the quantity of substance supplied to the fermentation container is detected, for example by using a vacuum pressure pump with a tank, which is positioned on a weighing device, by means of which the weight of each filled in the tank amount of substance and / or the amount of substance discharged therefrom can be detected.
  • the amounts recorded in this case can each be recorded or stored in a computer, so that a later evaluation is possible. This allows more precise control and process optimization.
  • each of the fermentation tank supplied amount of digestate has other advantages.
  • the present invention provides according to a preferred development that, for example, if one ascertains a rise of the gas roof, which signals an increasing amount of gas in the fermentation tank, the amount of digestate, which is supplied to the fermentation tank per unit time, slightly reduced. If you notice a drop in the gas roof, you can increase the amount of digestate supplied.
  • the supply of the respective quantity of fermentation material or its removal from the mixing container can be achieved via the vacuum pressure pumping system. orderly weighing device are accurately detected and thus controlled automatically. It is thus possible to run this process in a controlled manner and thereby achieve that a cogeneration plant operated with the biogas produced is always operated as far as possible under full load.
  • the mixing tank can then take place in fermentation processes preferably already a hydrolysis of the fermentation.
  • a substantially homogeneous, in particular viscous, mixture is already being produced, so that homogeneous new fermentation material is supplied to the main container at a defined point in time, which has the lowest possible water content. This makes it possible to achieve a more even fermentation process in the main container.
  • the mixing container may also be designed as a partial ring and partly extend around the fermentation container at the circumference.
  • the mixing container does not have to be ring-shaped and does not necessarily have to extend around the fermentation tank, but according to a variant of the invention may also have a different geometric shape and be accommodated at a different location separately from the fermentation tank.
  • the mixing in the mixing tank can be done by stirrers, which are arranged for example laterally on the walls. It does not bother when foreign objects such as stones with the digestate get into the mixing container, as these foreign objects fall in the mixing container on the ground and you can preferably use a vacuum pressure pumping system to the digestate from the mixing container and into the fermentation tank to promote.
  • the digestate does not come into contact with mechanical parts of a pump that would be damaged by such foreign bodies.
  • conventional agitators can be used.
  • the fresh material to be treated can be conveyed several times in a circle in the annular mixing container, until the desired degree of mixing and, if appropriate, hydrolysis are reached. This also gives you better control over the amount of newly added material to be treated.
  • the width of the mixing container extending annularly around the fermentation container is less than the radius of the cylindrical portion of the fermentation container, wherein preferably the width of the mixing container is less than half the radius of the cylindrical container. haride part of the fermentation tank amounts.
  • the height of the mixing container is less than the height of the cylindrical portion of the fermentation tank, wherein the mixing container is preferably angeord net in the bottom region of the fermentation tank, in particular below the container u ing soil n levels.
  • the amount of material to be treated in the mixing container is thus preferably only a fraction of the amount of the fermentation product in the fermentation tank.
  • the mixing container can be mixed from the freshly supplied organic substances, a viscous slurry, for example, with a dry matter of 20% to 35%. However, this depends very much on which substances are mixed.
  • a viscous slurry for example, with a dry matter of 20% to 35%.
  • these depends very much on which substances are mixed.
  • suitable starting substances or admixture for example, corn, grass silage, cereal meal, bread waste and the like or liquids such as glycerol.
  • annular mixing container results from its geometry. This has unlike a square container no dead zones, which is much easier to achieve a uniform mixing.
  • the principle can also be applied to silos or containers for storing organic material, around which an annular or only partially annular mixing container is arranged. The fermentation processes could take place in this case, for example in another separate container. However, this makes procedural sense only if the actual fermentation tank is not too far away from the mixing tank in order to avoid excessive pumping paths.
  • a vacuum pressure pumping system is used to convey the material to be treated from the mixing container into the fermentation container.
  • This pumping system is particularly suitable for pumping viscous viscous media. Even if these foreign objects such as stones or the like contained that is not disturbing.
  • the material to be treated is first sucked in by vacuum, for example, in a tank and then pressed out by means of compressed air from this in the respective container. There is no risk that they will be damaged by foreign bodies, unlike the use of conventional pumps with moving mechanical components.
  • the material to be treated is therefore not pumped by a conventional mechanical pump directly from the mixing container into the fermentation tank, but first sucked out of the mixing tank and then pressed into the fermentation tank.
  • the mixing container is always at least partially filled during operation of the system. If a part of the mixing container is pumped from the mixing container into the fermentation container, fresh material to be treated can be pumped into the mixing container in order to keep the filling level (usually only partial filling) in the mixing container approximately constant. If it is determined that there is still no homogeneous mixture in the mixing tank, the residence time in the mixing tank can be extended. In anaerobic fermentation of fermentable organic media, hydrolysis occurs in the annular mixing vessel when the residence time in the mixing vessel is one or more days, for example.
  • the largely homogeneous already hydrolyzed digestate can then be pumped for further fermentation in the main fermenter. It is particularly advantageous if, according to a preferred development of the invention, fresh fermentation material to be filled into the mixing container is first pumped (sucked) from a storage container into a tank (of the vacuum pressure pumping system) and only then from the container to anm first of all, it is first pumped into a tank and then pumped into the fermentation tank and / or fermented fermented material is first pumped out of the fermentation tank into a tank and then removed from the fermentation tank Tank is pumped into a repository (storage container). In other words, the fresh digestate is not directly admitted to the inlet, but closer to the bottom of the vacuum pumping system.
  • the pump used for this purpose is located outside of this tank and outside the pipe route used to convey the fermentation product.
  • the pump itself thus does not come into contact with the digestate.
  • the tank of the vacuum pressure pumping system is located both in the vicinity of the mixing container and in the vicinity of the fermentation tank, there is the further advantage that the same tank and the same vacuum pressure pumping system to do so can be used to add fresh digestate in the To pump mixing container to empty the Anmischbehalter and to pump the pre-treated already in the mixing container fermentation in the fermentation tank and to remove from the fermentation tank fermented fermentation (digestate).
  • the pumping paths are thus very short, which is advantageous at high dynamic viscosity of the fermentation.
  • the present invention furthermore relates to an apparatus for use in a method of the type described above, which is characterized in that the fermentation container is cylindrical and the mixing container extends annularly or partially annularly around the cylindrical fermentation container, wherein both the respective spaces of the two Container in which the viscous fermentation medium is, as well as the respective gas chambers of the container above the fermentation medium are completely separated from each other.
  • Said at least partially cylindrical container may be for example a round silo, a basin or a container in which organic substances are accommodated.
  • the mixing container extends annularly preferably concentric with the axis of the container around it.
  • the mixing container may for example have a rectangular cross-section.
  • the present invention is in particular a device for treating fermentable organic substances by anaerobic fermentation in a fermentation tank comprising means for mixing the digestate, which are at least partially outside the fermentation container, which is characterized in that it comprises an annular or semi-annular mixing container comprises, to which the fresh digestate is supplied, which extends annularly or partially annularly around the circumference of the fermentation tank around, wherein a vacuum-pressure pumping system is provided as a means to promote the fermentation in the mixing container, said pumping system preferably also serves To convey the digestate from the mixing tank into the fermentation tank.
  • This fermenter is in particular a container for the production of biogas from fermentable organic substances.
  • the highest possible high-energy substance slurry is produced in the mixing container, which can then preferably be pumped into the fermentation tank by means of compressed air.
  • this pumping process is preferably carried out so that the digestate is pumped out of the mixing container and only then pumped into the fermentor.
  • This makes it possible, on the one hand, from the Mixing container removed amount to control, for example, to weigh or enrich and on the other hand, not necessarily removed from the Anmischbehalter amount of digestate with the same volume to be fed to the fermentation tank.
  • the vacuum pressure pumping system the mixture does not come in direct contact with mechanical parts of a pump, and comparatively short pumping paths result in an advantageous manner.
  • the mixing container according to the invention thus preferably forms an annular mixing device which extends around a fermentation tank or a silo and in which the fermentation process can already begin.
  • the hydrolysis already take place in the mixing tank. This depends inter alia on the type of biomass and the residence time in the mixing container.
  • further decomposition and fermentation steps can already take place in the mixing vessel, for example the acidogenesis / acetogenesis, where organic components of the biomass are converted by anaerobic bacteria into acids and consequently the pH in the mixture decreases.
  • the annular mixing container may, for example, have a lower height than the fermentation tank, and the mixing tank may also be arranged, for example, below the floor level of the environment (that is, admitted into the ground, as it were).
  • the mixing tank is a type of hydrolysis cellar which surrounds itself extends around the fermentation tank, which may also be embedded with its lowest area, for example, in the ground. This can be advantageous to keep the digestate in the mixing tank cooler or to achieve a more uniform temperature regardless of the season.
  • the fermenter itself is usually cylindrical in the production of biogas only in its lower portion and has upwards then a dome or bell in which collects the biogas.
  • the apparatus further comprises a vacuum pressure pumping system for conveying the organic substances or the digestate, comprising a tank to which a vacuum can be applied to aspirate the organic substances or the digestate and which comprises a closing device, wherein the organic substances or the fermentation material can then be discharged from the tank by means of compressed air.
  • this vacuum-pressure pumping system comprises at least one pump disposed outside the tank and at least one duct leading from the pump to the tank for pressurizing the tank with compressed air or applying a vacuum to the tank. This creates the possibility of even viscous medium, which optionally contains foreign bodies, in To suck the tank and then deploy by applying the tank with compressed air from this.
  • the mixing vessel comprises a volume separated from the fermentation vessel, wherein at least one digestive tract passes from the mixing vessel to the tank for filling or emptying the mixing vessel, and at least one line passes from the tank to the fermentation vessel, around the fermentation vessel to fill or empty, so that you can fill or empty, for example, with only one tank, both the mixing container and the fermentation tank.
  • the digestate can pass directly through an opening in the mixing tank or a line from the mixing tank directly into the fermentation tank.
  • FIG. 1 shows a plan view of a system according to the invention with a fermenting container and an annular mixing container;
  • FIG. 2 is a longitudinal section through the system of Figure 1;
  • FIG. 3 shows a partially schematized detailed view of a vacuum-pressure pump system according to the invention for conveying the fermentation product in five different working phases;
  • Figure 4 is a schematic representation of a system according to the invention in six different phases of work.
  • a fermenting container 10 is shown, which is cylindrical in its lower region 11 and which has a curved dome 12 in its upper region, which is closed towards the top, so that the generated biogas can collect below this dome 12 , The biogas can then be diverted and used to generate electricity in, for example, an adjacent combined heat and power plant 13. As can be seen in particular from FIG.
  • the fermenter 10 in the lower part of the cylindrical region 11 is concentrically surrounded externally concentrically by an annular cross-sectionally rectangular mixing vessel 14, the latter being positioned so as to be flush with the bottom 15 of the fermentation vessel 10, while the mixing vessel is below 14 up close approximately at the level of the bottom surface 16 of the surrounding terrain plant.
  • Mixing container 14 is thus quasi embedded in the ground and he has a total of a much lower overall height than the fermentation tank. Accordingly, the capacity of the mixing container 14 is several times lower than that of the fermentation container 10th
  • a biological air filter 17 is usually used to eliminate the burden of the environment through unpleasant odors.
  • the annular mixing container 14 is separated at its radially inner side by a, for example, with the cylindrical portion 1 1 aligned partition wall 18 of the interior 19 of the fermentation tank 10.
  • a vacuum pressure pumping system 20 serves to fill the mixing tank 14 and the fermentation tank 14. This vacuum-pressure pumping system 20 may be disposed at the level of the bottom surface 16 so as to be above the mixing tank 14. In addition, the vacuum-pressure pump system is preferably located at a short distance to fermenter 10 and mixing tank 14, so as to ensure short pump paths.
  • This pumping system comprises a tank 21 with ports 22, 23 for one or more pumps so that vacuum or compressed air can be applied to the interior of the tank.
  • this tank 21 is empty. From a reservoir 24 shown schematically can be sucked through a line 25 25 fermented in the tank 21, if previously a negative pressure of, for example, 0.5 bar is applied to the interior of the tank 21, so that this then up to a predetermined Level, which is given for example by a float or the like, can be filled.
  • the filling level for example, via weighing cells or similar devices (that is, weighing the content of the tank).
  • the second figure at the top right shows the tank 20 in this way via the line 25 from the reservoir 24 is gradually filled with digestate 26.
  • the third figure of Figure 3 in the center left shows the state after the filling of the tank 21, wherein the supply of digestate from the reservoir 24 was sucked into the tank 21.
  • the tank 21 is emptied and the digestate is in the mixing tank 14.
  • the digestate can be transferred via the tank 21 from the reservoir 24 into the mixing tank 14 without the pump , which creates negative pressure or overpressure in the tank or the piping system between the pump and the tank at all come into contact with the digestate.
  • the digestate is rather sucked by vacuum from the one container 24 into the tank 21 and pressed by pressure from the tank 21 back out into the other container 14.
  • the pump can therefore not be affected by contamination in the digestate.
  • Figure 4 shows in the first illustration at the top left of the fermentation tank 10 and the mixing tank 14. Also shown is the tank 21 described above, in the supply line 25 from a supply of fermentation material, not shown, due to the negative pressure in the tank 21, the digestate in this is sucked in.
  • the pump 28, which sucks air from the tank 21 via the line 29 is also shown schematically.
  • the tank 21 is already largely filled in the illustration with the digestate.
  • the second illustration in Figure 4 in the left center shows the process of pumping the
  • the mixing container 14 can be filled with the fresh digestate, which remains in the mixing container for a while, for example 1, 2 days or more.
  • the third illustration in Figure 4 bottom left shows the process of suction of digestate from the mixing tank 14 out into the tank 21, in which case the pump 28 sucks again, so that in the tank 21, a negative pressure and the fermentation product via the line 30th is sucked back into the tank after it has remained in the mixing tank 14 for the duration of the hydrolysis phase.
  • the fourth illustration in FIG. 4 at the top right shows how the fermentation material is now pumped out of the tank 21 via the line 31 into the fermentation tank 10, by pressurizing it with compressed air by means of the pump 28.
  • the same line system can be used for the pumping process or the tank 21 has several outputs for digestate as indicated in the diagram.
  • the digestate is again pumped from the fermentation tank 10 back into the tank 21 by the pump 28 again sucks, so that a negative pressure in the tank 21 is formed.
  • the mixing tank is preferably always partially filled. If this
  • Mixing container for example, has a content of 400 m 3 , you pump, for example, from the mixing container per day 100 m 3 through the tank into the fermentation tank 10. Several times a week you mix again fresh digestate from a supply first in the tank 21 and then from this Preferably, the process is carried out so that the mixing container 14 always partially, for example, always remains about half filled.
  • a residence time of the digestate in the mixing vessel to achieve hydrolysis is preferably about two days or longer. In the hydrolysis phase (as well as in the subsequent following fermentation in the main tank) it is important to make sure that you work in the absence of oxygen.
  • An advantage of the method lies in the fact that when conveying fresh digestate into the mixing tank 14, the digestate present there is displaced and due to the ring shape of the mixing container in this the fermentation is quasi promoted on a circular path. As a result, the added fresh fermentation mixed in the discharge area with such digestate, which already has a longer residence time in the mixing tank.

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  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

L'invention concerne un procédé de traitement de substances organiques fermentables comprenant leur fermentation anaérobie dans un fermenteur (10), ainsi que des dispositifs pour le mélangeage de la matière à faire fermenter placés au moins partiellement à l'extérieur du fermenteur. Selon le procédé de l'invention, la charge de matière fraîche à faire fermenter est d'abord amenée à une cuve mélangeuse (14) s'étendant de préférence en anneau autour du fermenteur et la matière à faire fermenter est transportée sur une trajectoire annulaire dans cette cuve mélangeuse, mélangée en une bouillie épaisse et, seulement après une certaine durée de séjour, sortie de la cuve mélangeuse au moyen d'un système de pompe à pression ou à vide (20) et amenée au fermenteur. La quantité de matière à faire fermenter respectivement prélevée de la cuve mélangeuse peut être mesurée si le réservoir utilisé à cet effet est monté sur des cellules de pesage. L'invention fournit un procédé et un dispositif de traitement de substances organiques qui permettent un mélange efficace de la matière à faire fermenter dès la phase d'amenée à la cuve cylindrique ou au fermenteur, un meilleur acheminement de la matière à faire fermenter et une meilleure conduite du processus de fermentation.
EP10752558A 2009-09-07 2010-09-06 Procédé et dispositif de traitement de substances fermentables Withdrawn EP2475762A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009040195A DE102009040195A1 (de) 2009-09-07 2009-09-07 Verfahren und Vorrichtung zur Behandlung fermentierbarer Substanzen
PCT/EP2010/063015 WO2011026964A2 (fr) 2009-09-07 2010-09-06 Procédé et dispositif de traitement de substances fermentables

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EP2475762A2 true EP2475762A2 (fr) 2012-07-18

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US (1) US20120171742A1 (fr)
EP (1) EP2475762A2 (fr)
BR (1) BR112012005065A2 (fr)
CA (1) CA2773179A1 (fr)
DE (1) DE102009040195A1 (fr)
WO (1) WO2011026964A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102888429B (zh) * 2012-09-27 2014-12-10 北京时代桃源环境科技有限公司 一种餐厨垃圾厌氧发酵的预处理技术
DE102013106953A1 (de) * 2013-07-02 2015-01-08 Peter Lutz Biogas-Erzeugung aus Biomasse
DE102013213258A1 (de) 2013-07-05 2015-01-29 Bekon Holding Ag Verfahren zur Erzeugung eines flüssigen Düngemittels und eine Biogasanlage zur Durchführung des Verfahrens
DE102014011447A1 (de) * 2014-08-07 2016-02-11 S+B Service Und Betrieb Gmbh Kombinierter Hydrolyse-Fermentations-Apparat
DE102016218051A1 (de) * 2016-09-20 2018-03-22 bioenergy concept GmbH Behälter und Biogasanlage
DE102017010229A1 (de) * 2017-11-06 2019-05-09 Michael Niederbacher Pfropfenstrom-Fermenter einer Biogasanlage
CN109652305A (zh) * 2019-01-11 2019-04-19 中国农业科学院兰州畜牧与兽药研究所 一种厌氧物料混合罐
CN110883048A (zh) * 2019-10-22 2020-03-17 穗农环保生物科技(深圳)有限公司 垃圾处理机
CN113005014A (zh) * 2021-03-03 2021-06-22 梁活福 一种新能源生活垃圾发酵处理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568457A (en) * 1983-10-31 1986-02-04 Envirex Inc. Staged anaerobic reactor
US20090010719A1 (en) * 2004-04-27 2009-01-08 Ronald George Morris Material Transportation Apparatus and Method

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096754B (de) 1952-12-29 1961-01-05 Josef Eisele Vorrichtung zum Foerdern von Dickstoffe enthaltenden Fluessigkeiten mittels einer ein Vakuum erzeugenden Maschine
US3975546A (en) * 1975-01-23 1976-08-17 Stahmann Mark A Coagulation of protein from the juices of green plants by fermentation and the preservation thereof
ATE11902T1 (de) * 1979-07-02 1985-03-15 Small Stuart H Abfallbeseitigungsapparat.
DE3737870A1 (de) 1987-03-02 1988-09-15 Christoph Frese Verfahren und anlage zur herstellung von biogas aus dickfluessigen vergaerbaren medien
DE3864762D1 (de) * 1987-06-13 1991-10-17 Tuchenhagen Otto Gmbh Anordnung zur uebernahme, massenbestimmung und -abgrenzung von fluessigkeiten, insbesondere fuer getraenke wie milch oder bier.
DE19538579C1 (de) * 1995-10-17 1997-04-03 Karl Weitz Anlage zur Herstellung von Biogas aus organischen Stoffen
DE19746636A1 (de) * 1997-10-22 1999-04-29 Nordenskjoeld Reinhart Von Biogasanlage
DE19928663A1 (de) * 1999-06-23 2000-12-28 Beg Bioenergie Gmbh Verfahren und Vorrichtung zur Behandlung von strukturfreien oder strukturarmen Bioabfällen
CN1303200C (zh) * 2005-01-13 2007-03-07 上海交通大学 植物组织切割器外置型光生物反应器培养系统
DE102005054323B4 (de) * 2005-11-11 2008-02-21 Wilhelm Gantefort Fermenter zur Erzeugung von Biogas aus organischem Material
US7135308B1 (en) * 2006-02-28 2006-11-14 Propulsion Logic, Llc Process for the production of ethanol from algae
DE102007005069A1 (de) * 2007-01-26 2008-07-31 Uts Biogastechnik Gmbh Biogasanlage
DE202007002835U1 (de) * 2007-02-27 2007-07-05 U.T.S. Umwelt-Technik-Süd GmbH Biogasanlagen-Fermenter mit einer Rühreinrichtung
DE202007018465U1 (de) 2007-05-30 2008-08-14 Stirl Anlagentechnik Gmbh Biogasfermenter mit separatem Rührwerk
US8328412B2 (en) * 2008-06-20 2012-12-11 Philadelphia Mixing Solutions, Ltd. Combined axial-radial intake impeller with circular rake

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568457A (en) * 1983-10-31 1986-02-04 Envirex Inc. Staged anaerobic reactor
US20090010719A1 (en) * 2004-04-27 2009-01-08 Ronald George Morris Material Transportation Apparatus and Method

Also Published As

Publication number Publication date
WO2011026964A4 (fr) 2012-03-15
WO2011026964A3 (fr) 2011-12-22
WO2011026964A2 (fr) 2011-03-10
BR112012005065A2 (pt) 2015-09-08
US20120171742A1 (en) 2012-07-05
DE102009040195A1 (de) 2011-03-10
CA2773179A1 (fr) 2011-03-10

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