EP4114802A1 - Dispositif pour la méthanisation de matière organique - Google Patents
Dispositif pour la méthanisation de matière organiqueInfo
- Publication number
- EP4114802A1 EP4114802A1 EP21707729.6A EP21707729A EP4114802A1 EP 4114802 A1 EP4114802 A1 EP 4114802A1 EP 21707729 A EP21707729 A EP 21707729A EP 4114802 A1 EP4114802 A1 EP 4114802A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- corridor
- opening
- digestion
- organic material
- zone
- 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- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C3/00—Treating manure; Manuring
- A01C3/02—Storage places for manure, e.g. cisterns for liquid manure; Installations for fermenting manure
- A01C3/023—Digesters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C12M23/36—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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/02—Percolation
-
- 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
-
- 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
- C12M33/20—Ribbons
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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 methanization device, of the type comprising: a digestion corridor, capable of receiving organic material, said corridor extending in a substantially linear manner in a longitudinal direction, between a first and a second end; a gas collector, overcoming the digestion corridor; an area for the introduction of organic matter to digest, located at the first end of the corridor; and an evacuation zone for digested organic matter, located at the second end of the corridor.
- Methanization makes it possible in particular to recover organic matter from agriculture, such as slurry or manure.
- said organic material leads to biogas, or digestion gas, and to a solid residue, or digestate.
- the present invention relates more particularly to so-called “dry” methanization.
- the organic matter comprises a certain quantity of dry matter, which makes it difficult or impossible to pump by a rotor pump.
- the organic matter when the organic matter includes both a certain amount of water and a certain amount of straw, said organic matter exhibits physical properties of a solid at its center and physical properties of a liquid at its periphery. It is thus possible to cause a linear displacement of said organic material, respectively by feeding it and by discharging it at each end of the path.
- a methanization device, produced on this principle, is known from document FR3058077 in the name of the Applicant.
- the invention relates to a methanization device of the aforementioned type, in which: the digestion corridor has a substantially constant width in a horizontal transverse direction; and the evacuation zone comprises: a first opening for communication with the digestion corridor, said first opening having a width substantially equal to the width of the corridor in the transverse direction; and a first closing element of the first opening, said first closure member being movable between an open configuration and a closed configuration of said first opening.
- the anaerobic digestion device has one or more of the following characteristics, taken in isolation or in any technically possible combination:
- the first closure element comprises at least one flap movable in translation in a second direction, perpendicular to the horizontal transverse direction;
- the digestion corridor has a ramp adjacent to an upper edge of the first opening of the evacuation zone, said ramp having a surface inclined at a non-zero angle with respect to the horizontal and oriented downwards;
- the digestion corridor comprises a plurality of vertical panels extending in the longitudinal direction from the second end, a length of each of the panels in said longitudinal direction being less than 10% of a length of said corridor; and the first opening has a plurality of adjacent orifices in the transverse direction, two adjacent orifices being arranged on either side of one of the vertical panels;
- the first closure element comprises a plurality of flaps, each of said flaps being movable in translation between an open configuration and a closed configuration of one of the orifices;
- the inclined surface of the ramp has a width substantially equal to the width of the corridor in the first direction
- the evacuation zone comprises: a compartment into which opens the first opening for communication with the digestion corridor; a second opening opening onto said compartment, said second opening being aligned with the first opening in a third direction perpendicular to the first horizontal direction; and a second closing element of the second opening, said second closing element being movable between an open configuration and a closed configuration of said second opening.
- the anaerobic digestion device has one or more of the following characteristics, taken in isolation or in any technically possible combination:
- the introduction zone comprises: a main duct, one or more distribution devices and a pump, the or each distribution device connecting the main duct to an opening for communication with the digestion corridor, the pump being adapted to move organic material through the main duct and the or each distribution device;
- the introduction zone also includes a heat exchanger arranged on the main duct;
- the anaerobic digestion device further comprises a hopper placed above the pump, said hopper being able to separate solid elements composing the organic material.
- the anaerobic digestion device has one or more of the following characteristics, taken in isolation or in any technically possible combination:
- the introduction area includes: a communication port with the digestion corridor; a slide forming a downward slope towards the communication port; and a pusher adapted to push organic material through said orifice;
- the introduction zone also includes a heating element arranged on the slide;
- the anaerobic digestion device further comprises an organic material spreader arranged above the slide, said spreader being able to separate solid elements composing said organic material.
- the invention further relates to a method of operating a methanization device as described above, said method comprising: the introduction of organic material into the digestion corridor through the introduction zone; and simultaneously, discharging organic material through the discharge zone, said discharge comprising repeated movement of the first closure member between the open and closed configurations of the first opening.
- the removal of organic matter comprises the following steps: the second closure element being in the closed configuration, passage of the first closure element in the open configuration; then switching the first closure element to the closed configuration; then passage of the second closure element in the open configuration.
- - Figure 1 and Figure 2 are sectional views of a methanization device according to a first embodiment of the invention
- - Figure 3 is a detail view, in section, of the device of Figures 1 and 2;
- FIG. 4 is a front view of a methanization device according to a second embodiment of the invention.
- FIG. 5 is a detail view, in section, of the device of Figure 4.
- FIG. 6 is a partial top view of a methanization device according to a third embodiment of the invention.
- Figure 7 is a schematic side view, in section, of the device of Figure 6.
- Figures 1 to 3 show a methanization device 10 according to a first embodiment of the invention.
- Figures 4 and 5 show a methanization device 110 according to a second embodiment of the invention.
- Figures 6 and 7 show a methanization device 210 according to a third embodiment of the invention.
- the device 10, 110, 210 comprises: a corridor 12, 112, 212 for digestion; a collector 14, 114, 214 of biogas; an introduction zone 16, 116, 216; and an evacuation zone 18, 118, 218.
- the device 210 further comprises a reservoir 219.
- the device 10, 110, 210 further comprises an electronic control module 19, shown schematically in FIG. 1.
- the digestion lane 12, 112, 212 extends in a substantially linear fashion, between a first 20 and a second 22 end.
- the digestion corridor 12, 112, 212 is substantially rectilinear and extends in the horizontal direction X, called the longitudinal direction.
- the corridor 12, 112, 212 is in particular delimited by two side walls 24, 224 which are substantially flat.
- each of said walls 24 extends substantially in a plane (X, Z).
- the walls 224 are preferably slightly inclined with respect to the plane (X, Z), as will be specified later.
- the corridor 12, 112, 212 also comprises a substantially horizontal bottom 26, 126, 226.
- the bottom 126, 226 comprises a part 127, 227 slightly rising near the second end 22.
- the corridor 12, 112, 212 is also delimited by a first 28, 128, 228 and a second 30, 230 front walls, respectively located at the first 20 and at the second 22 ends of said corridor.
- the bottom 26, 126, 226 the two side walls 24, 224 and the two front walls 28, 128, 228 and 30, 230 define a space 31, 231 suitable for receiving organic material 32 ( Figure 5) during digestion .
- the space 31 is free of obstacles or intermediate partitions, between the two front walls 28, 128 and 30.
- the configuration of the space 231 will be detailed below.
- the bottom 26, 126, the two side walls 24 and the first front wall 28, 128 are made of a concrete type material.
- the bottom 226 is formed by an excavation in the ground; the two side walls 224 and the first front wall 228 are formed by said excavation and / or by slopes formed around said excavation.
- An internal surface of the corridor 212 is for example materialized by a flexible and waterproof membrane 217, pressed against the bottom 226 and the walls 224, 228.
- the digestion corridor 12, 112, 212 has a width 33, 233 in the horizontal direction Y, called the transverse direction.
- the width 33, 233 represents a gap between the two side walls 24, 224. Said width 33, 233 is substantially constant between the first 20 and the second 22 ends of the passage 12, 112, 212.
- the width 33 of the corridor 12, 112 is between 5 and 7 meters; and the width 233 of the corridor 212 is between 10 and 30 meters.
- a length 34 of the corridor 12, 112, between the first 28, 128 and second 30 front walls, is of the order of 20 to 30 meters; and a length 234 of lane 212 is on the order of 10 to 50 meters.
- the digestion corridor 12, 112, 212 has a height 35 in the Z direction.
- the height 35 corresponds to a height of the side walls 24, 224 between the bottom 26, 226 and an upper edge 36 of said walls.
- a height of the corridor 12, 112, 212 is of the order of 3 to 4 meters.
- the corridor 12, 112, 212 further comprises a detector 37, of the radar or float type, making it possible to measure a height 137 of organic material 32 in the space 31.
- the biogas collector 14, 114, 214 surmounts the digestion corridor 12, 112, 212, so as to receive biogas emerging from the organic matter 32 circulating in said corridor.
- the collector 214 is not shown in Figure 6.
- the biogas collector 14, 114, 214 forms a vault 38 extending the side walls 24, 224 of the corridor 12, 112, 212 so as to vertically close the space 31, 231.
- the vault 38 is for example formed of '' a membrane impermeable to biogas.
- a layer of concrete is placed at the top of the side 224 and front walls 228, 230 to allow anchoring of the arch 38.
- the collector 14, 114, 214 comprises for example one or more chimneys 138 for discharging the biogas.
- the chimney (s) 138 are for example arranged near the second end 22 of the corridor 12, 112, 212.
- the device 10, 110, 212 further comprises sprinkling ramps 39, arranged in the manifold 14, 114, 214.
- the sprinkling ramps 39 extend substantially over the entire length. lane length 12.
- the watering ramps 39 are particularly suitable for watering the organic material 32 located in the corridor 12, 112, 212 or to spread water or juice from the fermentation of organic material on said organic material.
- the reservoir 219 extends substantially in the direction X, parallel to the corridor 212.
- the reservoir 219 is hydraulically connected to the spray bars 39 and is able to receive juice from the fermentation of organic matter.
- the digestion corridor 12, 112, 212 comprises an end portion 68, 168, 268 located close to the second front wall 30, 230.
- the end portion 68, 168, 268 comprises in particular a ramp 70, 270 adjacent to the second front wall 30, 230.
- the ramp 270 is not shown in Figure 6.
- the ramp 70, 270 has a surface 72, 272 inclined relative to the horizontal and oriented downwards.
- the surface 72, 272 gradually lowers from the upper edge 36 of the side walls 24, 224 to the second front wall 30, 230.
- the surface 72, 272 is substantially planar and forms a non-zero angle b with the horizontal.
- the angle b is preferably between 30 ° and 60 ° and more preferably of the order of 45 °.
- the surface 72 extends over the entire width 33 of the corridor 12, 112.
- the end portion 268 of the corridor 212 further comprises a plurality of vertical panels 273, arranged in planes (X, Z).
- the vertical panels 273 extend along X from the second front wall 230 to the first front wall 228.
- a length of each of the panels along X is less than 10% of the length 234 of the corridor 212.
- each vertical panel 273 has a length along X of the order of 1 m to 2 m and two adjacent panels are spaced along Y by a distance of about 2 m to 4 m.
- the end portion 268 of the corridor 212 comprises five vertical panels 273.
- the number of vertical panels 273 is between 2 and 10 per corridor.
- the ramp 270 is formed of a plurality of sections 275, arranged on either side of the vertical panels 273.
- the surface 272 is therefore discontinuous along Y.
- the introduction zone 16, 116, 216 disposed at the first end 20 of the corridor 12, 112, is intended to introduce organic material to be digested into said corridor.
- the introduction zone 16, 116, 216 will be described in more detail below.
- the evacuation zone 18, 118, 218, arranged at the second end 22 of the corridor 12, 112, 212 is intended to evacuate the digested organic material 32 from said corridor.
- the evacuation zone 118 of the device 110 is notably visible in FIG. 5.
- the evacuation zone 18, 118, 218 has a compartment 40, 140, 240 located in the extension of the digestion corridor 12, 112, 212 in the longitudinal direction X.
- the compartment 40, 140, 240 preferably has a width 33, 233 along Y, similar to the width of the corridor 12, 112, 212. More precisely, the compartment 40, 140 is in particular delimited by two side walls 42, 242 which are substantially vertical. . In the embodiments of Figures 1-3 and 4-5, each of the side walls 42 is arranged in the same plane (X, Z) as a side wall 24 of the corridor 12, 112.
- the compartment 40, 140, 240 is also delimited along X by the second front wall 30, 230 of the corridor 12, 112, 212 and by a third front wall 44.
- a length 46 along X between the second 30, 230 and third 44 front walls is much less than a length along X between the first 28, 128, 228 and second 30, 230 front walls.
- the length 46 is preferably between 30 cm and 1 m, more preferably of the order of 50 cm.
- the compartment 40, 140, 240 further comprises: a bottom 48, 148; a first 50, 250 and a second 52 openings, located facing each other along X; and a first 54, 254 and a second 56 closure elements.
- the bottom 48 is located in the same horizontal plane as the bottom 26 of the corridor 12.
- the bottom 148 forms a downward slope with respect to the bottom 126, 226 of the corridor 112, 212.
- the bottom 148 forms a non-zero angle with horizontal.
- the angle a is preferably between 30 ° and 55 ° and more preferably of the order of 45 °.
- the first opening 50, 250 is intended for communication with the corridor 12, 112, 212.
- said first opening 50, 250 is provided in the second front wall 30, 230 of the corridor 12, 112, 212.
- the first opening 50, 250 extends vertically from the bottom 26, 126, 226 of the corridor 12, 112, 212 and from the bottom 48, 148 of the compartment 40, 140, 240.
- the first opening 50 extends over the entire width of the corridor 12, 112 and of the compartment 40, 140. More specifically, in the Y direction, the first opening 50 has a width 58 substantially equal to the width 33 of the corridor 12.
- the first opening 50 has a substantially parallelepipedal shape, with sides arranged along Y and Z.
- the first opening 250 is formed of a plurality of ports 251, 253.
- Each of the orifices 251 is arranged in the extension of a duct delimited by two vertical panels 273 of the end portion 268 of the corridor 212.
- the first opening 250 further comprises two end orifices 253, each located in the extension of a duct delimited by a side wall 224 and a vertical panel 273 adjacent to said wall.
- the vertical panels 273 have a small thickness compared to the width 233 of the corridor 212, said thickness being for example between 20 cm and 30 cm.
- the first opening 250 has a width substantially equal to said width 233.
- An upper edge 60 of the first opening 50, 250 is formed by the second front wall 30, 230 of the passage 12, 112, 212.
- a height 62 of the first opening 50, 250, between the bottom 48, 148, 248 and the upper edge 60 is preferably less than the height 35 of the corridor 12112, 212.
- the height 62 is for example of the order of 1.5 to 2 meters.
- the surface 72, 272 of said ramp gradually drops from the upper edge 36 of the side walls 24, 224 to the upper edge 60 of the first opening. 50, 250.
- the first closing element 54, 254 is capable of reversibly closing the first opening 50, 250.
- the first closing element 54, 254 comprises a first flap 64, 264, 265 movable in vertical translation.
- the first flap 64 is substantially arranged in a plane (Y, Z) and for example movable by means of hydraulic jacks.
- the first shutter 64 is movable between an open configuration and a closed configuration of the first opening 50.
- the closed configuration shown in Figures 1- 2 and 7, the first opening 50 is completely blocked.
- the open configuration shown in Figure 5, the first opening 50 is completely clear.
- the first closing element 254 comprises a plurality of first flaps 264, 265 movable in vertical translation. Each first flap 264 is movable between an open configuration and a closed configuration of a port 251. Each first flap 265 is movable between an open configuration and a closed configuration of an end port 253.
- the first shutter (s) 64, 264, 265 are permeable to liquids, so as to allow discharge of a surplus of fermentation juice.
- the second opening 52 of the compartment 40, 140, 240 is intended to evacuate organic material 32 received in said compartment, as will be described below.
- said second opening 52 is provided in the third front wall 44 of the compartment 40, 140, 240.
- the second opening 52 extends over the entire width of the compartment 40, 140. More precisely, in the direction Y, the second opening 52 has a width substantially equal to the width 33 of the compartment 40, 140, 240.
- the second opening 52 extends vertically from the bottom 48, 148 of the compartment 40, 140, 240.
- An upper edge 74 of the second opening 52 is formed by the third front wall 44 of the compartment 40.
- the second opening 52 has a substantially parallelepipedal shape, with sides arranged along Y and Z.
- a height 76 of the second opening 52, between the bottom 48, 148 and the upper edge 74, is preferably less than or equal to the height 62 of the first opening 50.
- the height 76 is between 1 m and 2 m, preferably of the order of 1. 70 m.
- the second closing element 56 is adapted to reversibly close the second opening 52.
- the second closing element 56 comprises a second flap 78 movable between an open configuration and a closed configuration of the second opening 52. In the configuration closed, shown in Figures 1, 5 and 7, the second opening 52 is completely blocked. In the open configuration, not shown, the second opening 52 is completely free.
- the second flap 78 is movable in vertical translation and is substantially arranged in a plane (Y, Z), similarly to the first flap 64.
- the second flap 78 is movable in rotation. along a horizontal axis and moves outside the compartment 40.
- the evacuation zone 218 of the device 210 will now be described in more detail.
- the evacuation zone 218 includes an evacuation channel 277, located in the extension of the compartment 240 in the longitudinal direction X.
- the discharge channel 277 extends in the transverse direction Y along an end edge 248 of the bottom 148 of the compartment 240. More specifically, the discharge channel 277 is located lower along Z than said end edge 248, so that the organic material 32 located on the bottom 148 falls into said channel.
- the evacuation zone 218 further comprises a moving mat 279 arranged along Y in the evacuation channel 277.
- the moving mat 279 is able to evacuate from said channel the organic material 32 falling on said mat.
- the introduction zone 16 comprises at least one introduction tank 80 and at least one spreader 82.
- the introduction tank 80 is located in the extension of the digestion corridor 12 in the longitudinal direction X.
- the introduction tank 80 is in particular delimited by the first front wall 28 of said corridor.
- the introduction tray 80 comprises: a slide 84, a communication port 86, a piston 88 and a heating element 90.
- the slide 84 forms a surface inclined relative to the horizontal and facing upwards. Said surface is preferably substantially flat and gradually decreases along X.
- the slide 84 forms a non-zero angle g with the horizontal.
- the angle g is preferably between 20 ° and 60 ° and more preferably of the order of 30 °.
- the communication orifice 86 is formed in the first front wall 28, at the bottom of the slide 84, forming a communication between the introduction tray 80 and the passage 12.
- a height along Z of the communication orifice 86 is preferably less than the height 62 of the first opening 50.
- the height of said orifice 86 is for example of the order of 50 cm.
- the piston 88 is able to move along the slide 84, between a high position, shown in Figure 1, and a low position shown in Figure 4. In the low position, the piston 88 obstructs the communication orifice. 86.
- the piston 88 is for example movable by means of hydraulic cylinders.
- the heating element 90 is disposed on the slide 84, preferably near the communication port 86.
- the heating element 90 is, for example, an electric hot plate.
- the spreader 82 is arranged above the introduction tank 80.
- the spreader 82 comprises in particular a moving belt 92 and rotating rods 94.
- the belt 92 is able to move organic material arranged on said belt along X.
- the rotary rods 94 extend along Y and are located downstream of the belt 92.
- the rotary rods are provided with bars 96 forming radial projections.
- the introduction zone 16 comprises two introduction tanks 80, juxtaposed along Y and separated by a longitudinal partition 98.
- Each introduction tank 80 is associated with a spreader 82 disposed above said tank. .
- the introduction zone 116, 216 comprises a main duct 180, one or more distribution devices 181, a pump 182 and a hopper 183.
- the introduction zone 116 further comprises a heat exchanger 184.
- the introduction zone 116 further comprises a liquid inlet 185, connected to the pump 182.
- the main duct 180 extends substantially horizontally, along the first front wall 128, 228 of the digestion lane 112, 212.
- the main duct 180 preferably has a large diameter, for example of the order of 40 cm.
- the or each distribution device 181 comprises a pipe 186 and a valve 187.
- the or each pipe 186 connects the main pipe 180 to an opening made in the first front wall 128, 228 of the corridor 112, 212.
- the corresponding valve 187 is suitable. in opening and closing said opening.
- the introduction zone 216 comprises a distribution device 181 facing each duct delimited by two vertical panels 273 of the end portion 268 of the corridor 212.
- the pump 182 is adapted to move organic material 32 in the main duct 180 and in the or each distribution device 181.
- the pump 182 is preferably a piston pump.
- the hopper 183 is disposed above the pump 182.
- the hopper 183 comprises in particular a moving belt 188, similar to the belt 92 of the spreader 82 described above.
- the hopper 183 further comprises rotating rods, similar to the rotating rods 94 of the spreader 82 described above.
- the heat exchanger 184 is arranged around the main duct 180, upstream of the distribution device (s) 181.
- the heat exchanger 184 is in particular capable of heating organic matter contained in the main duct.
- the liquid inlet 185 is preferably connected to a tank for water or fermentation juice or slurry. In the embodiment of Figures 6 and 7, the liquid inlet 185 (not shown) is connected to the reservoir 219.
- said device comprises at least two corridors 112 located in parallel and supplied by the same introduction zone 116, the main duct 180 then extending along the first front walls 128 of the to at least two lanes 112.
- the electronic module 19 for controlling the anaerobic digestion device 10, 110, 210 is able to control the watering ramps 39 and the first 54, 254 and second 56 elements for closing the evacuation zone 18, 118, 218. By elsewhere, said electronic module 19 is connected to detector 37.
- the electronic module 19 is able to drive the piston 88, the heating element 90, the belt 92 and the rotating rods 94 of the introduction zone 16.
- the electronic module 19 is able to control the pump 182, the heat exchanger 184, the valve or valves 186 of the distribution device or devices 181 and the conveyor belt 188. the hopper 183.
- the electronic module 19 is able to control the moving belt 279.
- a methanization device comprises a digestion corridor 12, 112 or 212; a collector 14, 114 or 214; an introduction zone 16, 116 or 216; and an evacuation zone 18, 118 or 218, combined in a different manner from the devices 10, 110 and 210 described above.
- a method of operating the methanization device 10, 110 will now be described. Said method is for example implemented by a program stored in the electronic control module 19.
- Manure-like organic matter 32 preferably comprising an amount of straw in the range of 5% to 80%, is first introduced into the introduction zone 16, 116.
- the organic material 32 is introduced into the spreader (s) 82. Said organic material 32 is moved by the belt 92 towards the rotating rods 94 in motion. The radial projections 96 of said rotating rods separate the different solid elements organic matter 32, which fall on the slide 84 of the or each introduction tray 80.
- the heating element 90 disposed on the slide 84, preferably increases the temperature of the organic material 32 before it is introduced into the passage 12. More preferably, the organic material 32 is heated to a temperature above 38 ° C.
- the piston 88 moves repetitively between its high position and its low position, so as to push the organic material 32 into the passage 12, through the communication orifice 86. Said organic material 32 thus feeds from the bottom a mass of material located in the digestion lane 12.
- the organic material 32 is introduced into the hopper 183. Said organic material is then decompressed before falling into the pump 182. The organic material is then mixed with water or fermentation juice brought in by the arrival of liquid 185, before moving in the main duct 180.
- the heat exchanger 184 makes it possible to bring the organic material 32 to a temperature of the order of 38 ° C- 40 ° C.
- the organic material 32 is then introduced into the digestion passage 112, 212 by the distribution device (s) 181.
- the organic material 32 is then distributed between said lanes.
- the continuous introduction of material causes the mass of organic material 32 to move coherently along the corridor 12, 112, 212, in the X direction.
- said mass of organic material organic matter 32 is sprinkled with water throughout its course, by means of the watering ramps 39.
- the flow of organic material introduced into the passage 12, 112, 212 is regulated by the electronic module 19 by means of the detector 37, so as to control the height 137 of the mass of organic material.
- the organic material 32 arrives at the second end 22 of the passage 12, 112, 212, the top of the mass of material contacts the ramp 70, 270 and is directed downwards by the inclined surface 72, 272.
- the organic material 32 then forms a hydraulic seal which makes it possible to avoid an escape of biogas through the first opening 50, 250.
- the slightly rising part 127, 227 of the bottom of the passage 112, 212, near the second end 22, blocks the flow of part of the fermentation juice to outside said corridor. This allows liquid to stagnate at the bottom of said lane to maintain the moisture of the circulating organic material 32.
- the evacuation zone 18, 118, 212 operates cyclically, according to the following scheme:
- the first shutter (s) 64, 264, 265 changes from the closed position to the open position.
- the organic material 32 directed by the walls of the corridor 12, 112, 212 and by the ramp 70, 270, passes through the first opening 50, 250 and fills the compartment 40, 140, 240 as visible in FIG. 5.
- the or the first flaps 64, 264, 265 are then lowered to the closed position.
- the first flaps 264, 265 are for example opened and closed one after the other in the Y direction, to allow a homogeneous advance of the organic material 32 in the corridor 212.
- the second flap 78 is then raised to the open position.
- the organic material 32 received in the compartment 40, 140, 240 flows outside said compartment through the second opening 52.
- the flow is promoted by the slope of the bottom 148 of compartment 140, 240.
- the second flap 78 is finally lowered to the closed position, before the start of a new cycle.
- organic material 32 discharged from compartment 240 falls into discharge channel 277 and is moved by moving belt 279.
- the airlock system formed by the compartment 40, 140, 240 of the evacuation zone 18, 118, 218 makes it possible in particular to control an evacuation flow rate of organic material 32, so as to obtain introduction and release flow rates. Similar evacuation.
- the absence of obstacles in the corridor 12, 112, 212 and the great width of the first opening 50, 250 facilitate the movement of the organic material 32 until it leaves the device 10, 110, 210. Indeed, the straw component of said organic material exhibits resistance to obstacles, which can hamper the progress of said material in the device.
- the methanization device 10, 110, 210 according to the invention thus makes it possible to obtain efficient evacuation of the digested organic material.
- the flow of material treated is thus improved.
- the anaerobic digestion device 10, 110 described above makes it possible to obtain flow rates of 2 m 3 to 15 m 3 per day, for a width 33 of 6 meters of the corridor 12, 112.
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2002072A FR3107637B1 (fr) | 2020-03-02 | 2020-03-02 | Dispositif pour la méthanisation de matière organique |
PCT/EP2021/055022 WO2021175771A1 (fr) | 2020-03-02 | 2021-03-01 | Dispositif pour la méthanisation de matière organique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4114802A1 true EP4114802A1 (fr) | 2023-01-11 |
Family
ID=70614171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21707729.6A Withdrawn EP4114802A1 (fr) | 2020-03-02 | 2021-03-01 | Dispositif pour la méthanisation de matière organique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4114802A1 (fr) |
FR (1) | FR3107637B1 (fr) |
WO (1) | WO2021175771A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3146781A1 (fr) | 2023-03-20 | 2024-09-27 | Vincent BACHET | Installation pour la méthanisation de matière organique |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468288A1 (fr) * | 1979-10-26 | 1981-05-08 | Mauguin Sa | Generateur de gaz de fumier a piston |
FR2481873A1 (fr) * | 1980-04-29 | 1981-11-13 | Nayet Roger | Principe d'un digesteur horizontal mixte, en vue de la production continue de gaz methane |
FR3058077B1 (fr) * | 2016-11-03 | 2018-12-14 | Easymetha | Dispositif pour la methanisation par voie seche de matiere organique et procede de methanisation mettant en oeuvre ledit dispositif |
-
2020
- 2020-03-02 FR FR2002072A patent/FR3107637B1/fr active Active
-
2021
- 2021-03-01 EP EP21707729.6A patent/EP4114802A1/fr not_active Withdrawn
- 2021-03-01 WO PCT/EP2021/055022 patent/WO2021175771A1/fr unknown
Also Published As
Publication number | Publication date |
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FR3107637B1 (fr) | 2022-03-11 |
FR3107637A1 (fr) | 2021-09-03 |
WO2021175771A1 (fr) | 2021-09-10 |
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