DE10254309A1 - Agricultural reactor has feed pipe to rising cylinder over floor with equidistant jets converting spent beet residues to methane - Google Patents

Agricultural reactor has feed pipe to rising cylinder over floor with equidistant jets converting spent beet residues to methane

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Publication number
DE10254309A1
DE10254309A1 DE2002154309 DE10254309A DE10254309A1 DE 10254309 A1 DE10254309 A1 DE 10254309A1 DE 2002154309 DE2002154309 DE 2002154309 DE 10254309 A DE10254309 A DE 10254309A DE 10254309 A1 DE10254309 A1 DE 10254309A1
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DE
Germany
Prior art keywords
fermenter
biogas
characterized
arranged
device according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE2002154309
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German (de)
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OSTENDORF JOSEPH
Original Assignee
OSTENDORF JOSEPH
OSTENDORF, JOSEPH
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 OSTENDORF JOSEPH, OSTENDORF, JOSEPH filed Critical OSTENDORF JOSEPH
Priority to DE2002154309 priority Critical patent/DE10254309A1/en
Publication of DE10254309A1 publication Critical patent/DE10254309A1/en
Application status is Ceased legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023Methane
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/18Flow directing inserts
    • C12M27/24Draft tube
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06Nozzles; Sprayers; Spargers; Diffusers
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/24Recirculation of gas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M33/00Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/16Screw conveyor
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/24Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste
    • Y02E50/34Methane
    • Y02E50/343Methane production by fermentation of organic by-products, e.g. sludge

Abstract

Agricultural reactor comprises a circular reactor (1) to convert organic farm residues into methane by fermentation (2) supplied via a feed pipe (3) into a rising cylinder (6). The reactor has a base (4) with jets (5) and a sediment trap (7) under the cylinder.

Description

  • The present invention relates to a device for generating biogas, in particular from the Agricultural products, as well as a corresponding process.
  • Biogas is around 50 to 60% from methane, which is combustible and has a high calorific value, and from carbon dioxide. It arises in nature wherever organic Material of microorganisms in the absence of oxygen (anaerobic) is implemented. Biogas can be in appropriately designed for it Win plants, with the following possible as starting materials come:
    • 1. activated sludge from sewage treatment plants;
    • 2. animal husbandry waste products such as manure and manure;
    • 3. Plant material such as straw and hay;
    • 4. Residues of Food production such as slaughterhouse waste water, brewery sludge, waste water from the Dairies and sugar factories and residues of biotechnological production plants; and or
    • 5. Household waste.
  • The use is particularly advantageous of devices for generating biogas where the above mentioned starting materials arise immediately. Particularly preferred are agricultural companies or joint ventures, in which both agriculture and cattle (pigs and cattle) and poultry being held. Agricultural companies or joint ventures are therefore particularly well suited for the installation of biogas plants, since biogas plants require a relatively large footprint, which is the case with such Companies should always be present.
  • Basic problem with devices for Generation of biogas is the mixing of the submitted and with Bacteria vaccinated starting material, for example from manure. It is desirable one if possible strong mixing of the manure, there thereby an increased Yield of biogas can be obtained.
  • In addition, there are biogas plants often only difficult to maintain, especially they have to be shut down at regular intervals to settle into these sediments from the starting materials and sediments that are partially formed by fermentation have to remove. For this the Operation of the biogas plant can be interrupted, which is costly is. About that In addition, cleaning a biogas plant is particularly important on the smell nuisance only difficult to perform. Furthermore, at known biogas plants energy are applied to the fermented Heat substrate to fermentation temperature.
  • There is therefore a need for devices for the production of biogas, which produce biogas in high yield and are easy to maintain and standardize.
  • Object of the present invention is therefore to provide a device for generating biogas make, which does not have the aforementioned disadvantages.
  • This task is solved by a device for generating biogas, in particular from the Agricultural products, with a container, comprising a fermenter, with an inlet for the supply of fermentation Products, whereby at least biogas, sediments through the fermentation and / or substrate is formed, with at least one at the bottom of the fermenter arranged nozzle, being the over the feed supplied products to be fermented in a filling agent arranged in the fermenter reach. This filler is preferably designed as a cylinder, in particular as a settling cylinder. In the filler put in the fed sediments to be fermented at the bottom of the same from. Is the filler Completely filled, that's how it goes the fed product to be fermented in the fermenter and mixes with it the content contained in this. The filler itself is preferred no fermentation takes place. The filler has the big advantage on that here the feed to be fed fermenting product the temperatures in the fermenter can be adjusted. As a result, local temperature differences in particular in the fermenter avoided, which slow down the fermentation process and thereby would reduce the yield of biogas. Furthermore, is known to Biogas plants save energy because they are used to heat the fermentation Product does not have to additional energy source be provided.
  • Advantageously, at least one collecting means, in particular a recess for receiving the sediments, is provided in the bottom of the fermenter. The depression is particularly advantageously connected to the filler. The sediments contained in the product to be fermented and those resulting from the fermentation process are collected in the well. The sediments are largely conveyed into the well by targeted control of the nozzles arranged at the bottom of the fermenter. Because the depression is connected to the filler, the sediments of the product to be fermented which settle in the filler can be removed directly from the latter and into the depression are carried out so that sediments of the product to be fermented only reach the fermenter in a very small amount. This sediment pre-separation and direct removal of the sediments make the contents of the fermenter more homogeneous, which in turn ensures increased biogas production.
  • The fermenter itself preferably has a circular Floor space and is preferably substantially cylindrical. There is advantageously a heating device inside the fermenter arranged. This can be done with a cylindrical configuration of the fermenter be designed as a heating wall, which is then preferably mounted on the bottom of the fermenter is arranged. By the elevation the transport of the sediments settling on the bottom of the fermenter, which are transported in particular through the controllable nozzles prevented.
  • In a particularly preferred embodiment the device according to the invention gloomy Nozzle Mixture comprising biogas and / or at least partially fermented substrate into the fermenter. If several nozzles are provided in the fermenter e.g. a nozzle only biogas, another only partially fermented substrate, or else one and the same nozzle can alternately inject biogas or partially fermented substrate.
  • This is particularly advantageous that by means of injection a mixture of biogas and / or at least partially fermented Substrate both horizontal and vertical mixing the content of the fermenter is ensured. This allows the Yield of biogas increased significantly become. That injected Biogas in particular ensures vertical mixing of the mass contained in the fermenter, whereas by the injected at least partially fermented substrate, especially a horizontal one Mixing of the contents of the fermenter takes place, as at least due to the inhomogeneity of the injected partially fermented substrate, i.e. especially the different ones Density of the substances or parts contained in it, a horizontal Mixing of the fermenter content takes place. This horizontal mixing can still be done by a special control of the bottom of the fermenter arranged nozzles are supported, the control not only the injection angle, but also the switching sequence with multiple nozzles includes.
  • The container of the device according to the invention can also include a gas dome. The gas dome can preferably consist of an air dome. However, the gas can also have a Gas discharge line can be taken directly from the fermenter. The Arrangement of the nozzle at the bottom can be done in such a way that the nozzle itself directly into the Bottom of the fermenter is embedded. However, it is for example also possible, Nozzles mounted in a distance of 20 cm to about 1 m, preferably 30 cm to 70 cm, to be placed away from the bottom in the fermenter. This has the advantage that with such an elevated one nozzle assembly Existing fermenters can also be upgraded without nozzles in the ground can. The nozzles are then in the figured Version preferred oblique aligned to the floor.
  • So-called two-substance nozzles are preferably used as nozzles, which are preferably designed as slot radiators. With such Jets can either only biogas or only partially fermented substrate, or alternately, as well as biogas and partially fermented 4s Substrate injected at the same time be, the mixing with the biogas then preferably in the Nozzle itself or but already takes place in the pump unit. In addition, in particular other agents and / or gases are also injected, such as methane gas, inoculants etc. Here, the kinetic energy of a liquid jet (here: Substrate propellant jet) advantageously used to the entrained or split biogas into very fine gas bubbles. Through such Slot-ray binary jets is therefore with the device according to the invention another increase the yield of biogas achieved. In addition, the mixture can The vaccine, i.e. those needed for fermentation Microorganisms (bacteria) can be added.
  • By injecting a mixture of biogas and / or at least partially fermented substrate, it is advantageous possible, that targeted heat then is introduced into the fermenter content when the mixture on the appropriate temperature preheated becomes. This can be done particularly simply when the pump required for the injection with the appropriate exhaust and suction lines outside of the fermenter is arranged so that in this pump and line unit targeted preheating, possibly also cooling, can be made. In addition can especially vaccine are injected.
  • The injected biogas and / or is advantageously The substrate is at least partially removed from the container in the circuit. Through a circuit the device according to the invention the yield of the same is further increased and the fermentation process simplified. Here, only a small part of the fermenter content present substrate withdrawn from the fermenter and via a pump the nozzle fed. The biogas is also directly in a small amount Gasdom or a separate gas storage tank in which the resulting Biogas is derived.
  • The nozzles are preferably arranged in rows on the bottom of the fermenter, for example radially. An arrangement in rows allows a lot Number of different controls of the controllable nozzles, whereby a transport of the sediments settling on the bottom of the fermenter can take place depending on the arrangement and design of the well. Preferably, about one nozzle is arranged per 3 to 7 m 2 base area, preferably 5 m 2 base area, of the fermenter. However, the nozzles can also be arranged in any other arrangement, such as circular or irregular.
  • Furthermore, the present concerns Invention a method for producing biogas, in particular with a device as described above, one of one container included Fermenter over an inlet and a filler arranged in the fermenter products to be fermented and the contents of the fermenter have at least one on the bottom the same nozzle arranged sprayed becomes. Preferably over the nozzle Mixture comprising biogas and / or substrate under a pressure in a range of about 2 to 7 bar, preferably 5 to 6.5 bar, in injected the fermenter. By the method according to the invention becomes both horizontal and vertical mixing of the fermenter content causes, which results in a higher yield of biogas. The injection from a mixture of biogas and / or at least partially fermented Substrate, which preferably contains the fermenter content in a recycle process or are taken from the gas dome or the gas storage container at the injection horizontal and vertical mixing of the fermenter contents advantageously achieved.
  • The nozzles are preferred in this way controlled that the sediment deposited on the ground is transported into a depression become. For example, the depression is annular on the inside of the outer wall arranged of the fermenter, they are preferably in rows or Circles arranged at the bottom of the fermenter are controlled in such a way that during training of the fermenter in cylindrical form starting from the center of the same outer wall the nozzles can be controlled, i.e. first the nozzles located in the center of the fermenter Mixture comprising biogas and / or substrate and optionally also inject other agents such as inoculants and / or gases such as methane gas the next Control step the next row from the center of the fermenter of nozzles is controlled. This continues accordingly until the last one Nozzle row which is located directly on the depression. This will remove the sediments on the bottom from the center of the fermenter to the one on the inside of the outer wall of the fermenter annular Well transported. The same control procedure can also run in reverse, namely when the recess for receiving the sediments obtained, for example in a cylindrical fermenter is arranged in the center of the same, so that here the one immediately on the inside on the outer wall of the fermenter arranged nozzles be controlled first, then the next row on nozzles, which closer to the center of the fermenter, etc.
  • However, it is preferably provided that the nozzles like that can be controlled that this in principle understand a blade movement similar to an agitator. If one again assumes a cylindrical fermenter, then first a series of nozzles, which on an imaginary line from the center of the fermenter to outer wall the same, i.e. lie on a radius line, and at most from the Depression are arranged, controlled, then be the one on the next one Radius line lying nozzles driven. This process is repeated until the sediments through this clockwise or counterclockwise nozzle control and the resulting transport of the sediments into the Deepening are transported. The deepening is about last eighth circle in a fermenter with a circular base on the bottom arranged the same. The sediments are removed using known extraction devices removed from the well, for example, the removal can be done via auger take place, which can also be laid in the floor. Beyond that but also simple removal devices, for example with the Well connected drain pipes and valves arranged in this, possible.
  • A mixture of products to be fermented and 20 to 75% by weight of beet silage, based on the total amount, is advantageously fed to the fermenter via the feed. Rübensila ge advantageously increases the yield of biogas, since this results in a high energy input into the fermenter content. The energy yield for fodder beet is around 15,000 m 3 of gas per hectare of cultivated area, which corresponds to an electrical energy of around 33,000 kW / h. In addition, beet cultivation and beet harvesting can be largely automated, so that beets are available at a correspondingly low cost. After the harvest, the beets intended for the beet silage are tasted, ensiled and introduced into the fermenter from the beet storage container, for example by means of a metering pump. The mixing of the beet silage with the other products to be fermented, in particular liquid manure, can be provided in the pump or only afterwards. Due to the relatively low proportion of dry matter in the beet silage, the beet silage is pumpable and thus the process of adding beet silage can be highly automated. It is particularly advantageous here that the freezing point of beet silage is lower than water, which considerably simplifies storage on the one hand and the supply of the beet silage to the fermenter content on the other. The proportion of the beet silage, based on the total amount, is preferably in a range from about 20 to 50% by weight, more preferably in a range from 25 to 40% by weight.
  • The fermentation temperature is preferred in the fermenter in a range of about 15 to 60 ° C, preferably 20 to 50 ° C, further preferably 20 to 40 ° C, kept. This area corresponds to the so-called mesophilic area, which the for the fermentation needed Bacterial cultures need for optimal growth. By leading the Processes at mesophilic temperatures are advantageously larger temperature fluctuations possible in the aforementioned area, furthermore, the energy expenditure is considerably less than that of one Working in the thermophilic field. Furthermore, the temperature difference between the heating device and the fermenter content less when working in the mesophilic range than when carrying out a process in the thermophilic range Area.
  • This causes process disruptions local overheating, which adversely affects the biogas yield, advantageously avoided.
  • These and other advantages of the present invention are explained using the following figures:
  • 1 : Cross section of a device according to the invention for generating biogas; and
  • 2 : Top view of the device according to the invention 1 ,
  • 1 shows a device for the production of biogas, the one with the reference numeral 1 designated container which has a fermenter 2 with a gas dome directly connected to it 9 includes. In addition, the container 1 for example still include the control and / or pump system. The fermenter is made of V2a steel in the lower part, whereas in the transition area between fermenter 2 and gas dome 9 , ie in the transition area between the liquid and the gas phase V4a steel is used. The container 1 is particularly in the area of the fermenter 2 insulated against heat loss.
  • The container 1 including fermenter 2 is cylindrical and accordingly has a circular base. A settling cylinder is used as a filler on an imaginary axis cross placed through the circular base 6 arranged on one of the two axes near the outer wall of the fermenter. In the settling cylinder 6 an inflow ends 3 , about which products to be fermented from outside the container 1 are fed. These products to be fermented are fed from storage containers into the container via a metering pump 1 pumped. For example, a mixture of 25% by weight beet silage and liquid manure is fed into the feed 3 in the settling cylinder 6 promoted. The inflow 3 is ausgebil det that the same opening in the settling cylinder 6 about a third to a quarter of the height of the settling cylinder 6 is arranged. The supplied products to be fermented settle in the settling cylinder 6 from, the sediments contained in it, which can in particular also consist of impurities such as stones, earth, etc., at the bottom of the settling cylinder 6 stop yourself. Here is the settling cylinder 6 with a collection, namely a deepening 7 , directly connected. So the sediment that settles out of the settling cylinder 6 immediately into the recess 7 get out of this by means of a discharge device (screw conveyor) 10 be removed. Here, the discharge device 10 in the recess 7 be supported at one end by a correspondingly shaped component 7.1 ,
  • In the settling cylinder 6 there is no fermentation reaction yet. In the settling cylinder 6 there is a temperature adjustment of the supplied products to be fermented with the fermenter content. This ensures that when the products to be fermented are transferred from the settling cylinder 6 to that in the fermenter 2 existing fermenter content is increased by the no longer existing temperature differences, the biogas yield. Is the settling cylinder 6 filled with products to be fermented, they run as if by the arrow 6.1 indicated in the actual fermenter and mix with the fermenter content, whereby convection of the fermenter content takes place. The supply of the products to be fermented via the inlet 3 and ultimately the settling cylinder 6 in the fermenter contents via a controllable pump, which ensures that the temperature of the content of the settling cylinder 6 has adjusted to that of the fermenter content.
  • In the ground 4 of the fermenter 2 or the container 1 are nozzles 5 evenly arranged in rows. About these nozzles 5 a mixture of biogas and / or at least partially fermented substrate, which is taken from the fermenter content in the circuit, is injected under a pressure of 6 bar into the fermenter in a controlled manner. The control takes place pneumatically and can be fully automated by switching on a data processing system. The nozzles are designed as dual-substance slot nozzles and either only or alternately inject biogas and partially fermented substrate, optionally mixed with further agents and / or gases, or a mixture.
  • Furthermore, the container has a drain 11 on which the fermenter contents can be partially or completely drained. This can be particularly the case during routine general cleaning of the container 1 to be necessary. Usually, the at least partially fermented substrate from the fermenter 2 about a substrate removal 12 taken. Additionally is due to an overflow 14 ensured that the content of the liquid phase in the fermenter does not exceed a maximum level. That is in the gas dome 9 Any biogas that is present and generated by the fermentation is extracted by gas 13 taken from the gas dome. The gas dome consists of an air dome designed as a dome and is equipped with an overpressure safety device. The gas removed can be cleaned in a further step, for example desulfurization can be carried out, this being generated with the supply of air. The size of the gas dome cools the biogas so that the water vapor contained in the biogas condenses, settles on the inside of the gas dome and into the fermenter 2 running back.
  • On the settling cylinder 6 is still a heater 8th attached. This is raised on the floor 4 of the container 1 so that the transportation of the bottom of the fermenter 2 sedimentation through the controllable nozzles 5 is not prevented.
  • 2 illustrates in particular the arrangement of the in the floor 4 of the fermenter 2 arranged nozzles 5 , These are arranged in rows in the fermenter base at regular intervals. Here, approximately one nozzle per 5 m 2 of floor area is provided. It is clear in 2 the arrangement of the recess 7 in the ground 4 of the container 1 to recognize. The deepening 7 itself is designed in such a way that its walls have a slight incline, which can also be of different steepness. At the deepest point of the depression 7 is then the screw conveyor 10 arranged to remove the sediment accumulating in this. Via a pump 15 , which works in particular on the Venturi principle, is via a gas intake pipe 17 and a substrate suction pipe 18 a subset of the ones in the container 1 removed biogas and substrate and via feed lines 16 the individual nozzles 5 controlled fed. In this case, it can be provided that in particular seed substrate is fed via a further supply line to the pump. Furthermore, the injected mixture can be heated in a targeted manner, so that targeted heating of a local area of the fermenter content is achieved by injecting the mixture. Hence the pump 15 outside the container 1 arranged.
  • The control of the nozzles 5 takes place in such a way that those nozzles which lie on this radius line and furthest from the recess are first activated on an imaginary radius line 7 are removed. In the in 2 Accordingly, the embodiment shown will first be to the right of the settling cylinder 6 and the heater 8th located nozzles, in the next step clockwise the next on an imaginary radius line in approximately lying nozzles 5 driven. These controls clockwise the nozzles 5 , which lie on an imaginary radius line, is continued until finally the sediments, which are on the ground 4 of the fermenter 2 have dropped into the recess 7 are transported. The nozzles 5 have injection angles which are approximately in a range from 10 ° to 60 °, based on the floor 4 , are, preferably the injection angle is in a range from about 20 ° to 50 °, more preferably 35 ° to 45 °. The nozzles 5 can be designed to be controllable with regard to their injection angle. In addition, the nozzles 5 can also be designed to be closable, which advantageously ensures that non-active nozzles do not become clogged with sediments.
  • By the present invention an apparatus and a method for generating biogas for disposal provided, which on the one hand with those already present in the substrate to be fed Sediments / objects related Does not show any problems because there are disturbing sediments / objects in the filler and simply remove it, and by preheating the supplied Substrate in the filler Energy saved and an extremely high yield of biogas allows becomes. On the other hand, however, cleaning is extremely easy with regard to the sediment settling. The special advantage the device according to the invention is that hereby standardized Plants can be made which for example, with a power of 500 kW approximately a diameter of 18 m. A complete fermentation takes about 25 days.

Claims (14)

  1. Device for producing biogas, in particular from agricultural products, with a container ( 1 ), comprising a fermenter ( 2 ), with an inflow ( 3 ) for the supply of products to be fermented, the fermentation producing at least biogas, sediments and / or substrate, and at least one at the bottom ( 4 ) of the fermenter ( 2 ) arranged nozzle ( 5 ), and where about the inflow ( 3 ) the supplied products to be fermented in a fermenter ( 2 ) arranged filler ( 6 ) reach.
  2. Device according to claim 1, characterized in that in the bottom ( 4 ) at least one well ( 7 ) is provided for receiving the sediments.
  3. Device according to one of the preceding claims, characterized in that the depression ( 7 ) with the filler ( 6 ) connected is.
  4. Device according to one of the preceding claims, characterized in that the fermenter ( 2 ) has a circular base.
  5. Device according to one of the preceding claims, characterized in that in the fermenter ( 2 ) a heater ( 8th ) is arranged.
  6. Device according to one of the preceding claims, characterized in that the nozzle ( 5 ) a mixture comprising biogas and / or at least partially fermented substrate in the fermenter ( 2 ) inject.
  7. Device according to one of the preceding claims, characterized in that the injected biogas and / or substrate at least partially from the container ( 1 ) is removed from the circuit.
  8. Device according to one of the preceding claims, characterized in that the nozzles ( 5 ) in rows on the floor ( 4 ) are arranged.
  9. Device according to one of the preceding claims, characterized in that a nozzle ( 5 ) per 3 to 7 m 2 base area of the fermenter ( 2 ) is arranged.
  10. Method for producing biogas, in particular with a device according to one of claims 1 to 9, wherein one of a container ( 1 ) included fermenter ( 2 ) via an inflow ( 3 ) and in one in the fermenter ( 2 ) arranged filler ( 6 ) products to be fermented, and the content of the fermenter ( 2 ) at least one on the ground ( 4 ) arranged nozzle ( 5 ) is sprayed.
  11. A method according to claim 10, characterized in that via the nozzle ( 5 a mixture comprising biogas and / or substrate into the fermenter under a pressure in a range from about 2 to 7 bar ( 2 ) is injected.
  12. Method according to one of claims 10 and 11, characterized in that the nozzles ( 5 ) can be controlled in such a way that the 4 ) sedimentation into a well ( 7 ) be transported.
  13. Method according to one of claims 10 to 12, characterized in that in the fermenter ( 2 ) about the inflow ( 3 ) a mixture of products to be fermented from 20 to 75% by weight of beet silage, based on the total amount, is added.
  14. Method according to one of claims 10 to 13, characterized in that the fermentation temperature in the fermenter ( 2 ) is kept in a range of about 20 to 40 ° C.
DE2002154309 2002-11-21 2002-11-21 Agricultural reactor has feed pipe to rising cylinder over floor with equidistant jets converting spent beet residues to methane Ceased DE10254309A1 (en)

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Application Number Priority Date Filing Date Title
DE2002154309 DE10254309A1 (en) 2002-11-21 2002-11-21 Agricultural reactor has feed pipe to rising cylinder over floor with equidistant jets converting spent beet residues to methane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002154309 DE10254309A1 (en) 2002-11-21 2002-11-21 Agricultural reactor has feed pipe to rising cylinder over floor with equidistant jets converting spent beet residues to methane

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DE10254309A1 true DE10254309A1 (en) 2004-06-17

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DE102012025027A1 (en) * 2012-12-20 2014-06-26 Reiflock Abwassertechnik Gmbh Apparatus and method for the treatment of biomass
WO2015059138A1 (en) * 2013-10-21 2015-04-30 Binowa Gmbh Method and device for separating heavy components from a high viscosity starting substrate of biogas plants
FR3043694A1 (en) * 2015-11-13 2017-05-19 Inst De Rech Pour Le Dev (Ird) Fermentation device in solid environment
WO2018206118A1 (en) * 2017-05-12 2018-11-15 Institut De Recherche Pour Le Developpement (Ird) Device for fermentation in solid medium and associated method of use

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012025027A1 (en) * 2012-12-20 2014-06-26 Reiflock Abwassertechnik Gmbh Apparatus and method for the treatment of biomass
WO2015059138A1 (en) * 2013-10-21 2015-04-30 Binowa Gmbh Method and device for separating heavy components from a high viscosity starting substrate of biogas plants
FR3043694A1 (en) * 2015-11-13 2017-05-19 Inst De Rech Pour Le Dev (Ird) Fermentation device in solid environment
WO2018206118A1 (en) * 2017-05-12 2018-11-15 Institut De Recherche Pour Le Developpement (Ird) Device for fermentation in solid medium and associated method of use

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