FR2480062A1 - Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost - Google Patents

Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost Download PDF

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Publication number
FR2480062A1
FR2480062A1 FR8008114A FR8008114A FR2480062A1 FR 2480062 A1 FR2480062 A1 FR 2480062A1 FR 8008114 A FR8008114 A FR 8008114A FR 8008114 A FR8008114 A FR 8008114A FR 2480062 A1 FR2480062 A1 FR 2480062A1
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France
Prior art keywords
container
pipe
vessel
digester
ground
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.)
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Application number
FR8008114A
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French (fr)
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REMY GABRIEL
Original Assignee
REMY GABRIEL
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 REMY GABRIEL filed Critical REMY GABRIEL
Priority to FR8008114A priority Critical patent/FR2480062A1/en
Publication of FR2480062A1 publication Critical patent/FR2480062A1/en
Priority to FR8207834A priority patent/FR2526265A2/en
Withdrawn legal-status Critical Current

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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
    • 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
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/44—Means for regulation, monitoring, measurement or control, e.g. flow regulation of volume or liquid level

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Zoology (AREA)
  • Genetics & Genomics (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Sustainable Development (AREA)
  • Soil Sciences (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Environmental Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Digester is for the anaerobic fermentation of organic waste for the prodn. of methane. The digester is of the type which has an infeed pipe for liquefied raw material, an outlet pipe for gas generated by the fermentation, a constant level overflow pipe and a discharge pipe for residual sludge. The digester comprises a vertical, cylindrical vessel with a downwardly convergent conical base supported clear of the ground. The vessel is contained within a thermally insulating cover which extends down to the ground. The infeed, gas outlet, overflow, and sludge discharge pipes all pass through the space between cover and vessel to extend into/through the fermenting material in the vessel. The overflow pipe is pref. an inverted 'U'-tube of which one branch discharges outside the insulating cover. The other branch passes through the conical base to connect with a pipe communicating with the interior of the vessel, e.g. with the infeed pipe. The top of the inverted 'U'-tube is pref. vented to atmos. to prevent siphoning. The digester is used for the anaerobic fermentation of liquefied manure etc. to produce methane gas for heating, light and power. The digester vessel is held clear of the ground to prevent loss of heat. The various service pipes are buried in the fermenting mass and pass through the base space inside the cover; this protects the pipes from frost damage.

Description

La présente invention concerne un digesteur de gaz. The present invention relates to a gas digester.

I1 existe déjà des digesteurs dans lesquels des déchets
organiques tels que du fumier sont traités pour en extraire les gaz produits
par la fermentation et la décomposition en vue de leur utilisation comme com
bustible gazeux.There are already digesters in which waste
organic materials such as manure are treated to extract the gases produced
by fermentation and decomposition for use as a com
gaseous bustible.

A cet effet le fumier, à l'état dilué, est amené dans
des conteneurs raccordés h des tuyauteries adéquates pour le chargement du réci
pient, le recueil des gaz dégagés de la masse en traitement et l'évacuation
des matières résiduelles.For this purpose the manure, in the diluted state, is brought into
containers connected to suitable piping for loading the container
pient, the collection of gases released from the mass under treatment and the evacuation
residual materials.

Dans les installations connues ces conteneurs sont en
général cylindriques à fond plat, placés à même le sol et les différentes con
duites s'y rapportant sont disposées à ltextérieur. I1 en résulte d'abord une
mauvaise isolation du fond puisqu'il est en contact direct avec le sol et, de
plus, les conduites sont exposées au gel pendant la saison froide. En outre,
les particules lourdes se déposant au fond sont inactives et doivent être dé
placées à la main puisqu'un autre moyen n'est pas prévu.In known installations, these containers are in
general cylindrical flat bottom, placed on the ground and different con
related texts are arranged inside. I1 first results in a
poor insulation of the bottom since it is in direct contact with the ground and,
moreover, the pipes are exposed to frost during the cold season. In addition,
heavy particles depositing at the bottom are inactive and must be removed
placed by hand since no other means is provided.

La présente invention vise des perfectionnements de
telles installations grâce auxquels ces inconvénients sont supprimés.The present invention relates to improvements in
such installations thanks to which these drawbacks are eliminated.

I1 est avant tout préconisé un conteneur h fond co
nique dont les tubulures sont disposées à l'intérieur, noyées dans la masse
en traitement chauffée à une température constante au moyen d'un échangeur
thermique excluant ainsi le risque de gel.It is above all recommended a container with bottom co
picnic whose tubes are arranged inside, embedded in the mass
in treatment heated to a constant temperature by means of an exchanger
thus excluding the risk of freezing.

L'espace libre situé en-dessous du c8ne entouré par
le revêtement recouvrant l'ensemble de leinstallation est maintenu à une tem
pérature à peine inférieure à celle de la masse en traitement.The free space below the c8ne surrounded by
the covering covering the entire installation is kept at a tem
barely below that of the mass being treated.

GrSce au fond conique vers le bas du digesteur, l'ex-
pulsion à cet endroit des particules psondéreuses qui sty déposent a lieu
automatiquement et est réalisable périodiquement, par exemple journellement.Thanks to the conical bottom towards the bottom of the digester, the ex-
impulse at this place of the ponderous particles which sty deposit takes place
automatically and can be carried out periodically, for example daily.

Ceci a lieu par le brassage vigoureux de la masse par la pompe d'alimentation
courtcircuitée avec une conduite de dérivation. Cette pompe, comme d'ailleurs
l'installation de filtration et de séchage des gaz recueillis, peut se loger
dans l'espace entourant et situé au-dessous du fond conique du conteneur.This takes place by vigorous mixing of the mass by the feed pump
short-circuited with a bypass line. This pump, like elsewhere
the filtration and drying installation for the gases collected, can be accommodated
in the surrounding space and located below the conical bottom of the container.

Le niveau de la masse liquide dans le conteneur est
réglé par une tubulure agissant par le principe des vases communiquants, et
cela sans concordance avec le haut du récipient situé au-dessus du niveau du w liquide d'où part la conduite de sortie des gaz. Celle-ci traverse la masse
en traitement et sort du cône. Cette tubulure coudée, en forme de U renversé,
est dotée au sommet du coude d'un reniflard pour empêcher qu'elle agisse en
siphon. C'est le reniflard seul qui est exposé à l'air libre; mais comme il
ne contient que de l'air, le gel ne lui est pas préjudiciable. Tout le reste
des conduites se trouve à l'abri. The level of the liquid mass in the container is
regulated by a tubing acting by the principle of communicating vessels, and
this without concordance with the top of the container situated above the level of the liquid w from which the gas outlet pipe starts. It crosses the mass
in treatment and out of the cone. This bent tubing, in the shape of an inverted U,
has a breather at the top of the elbow to prevent it from acting
siphon. It is the breather alone which is exposed to the open air; but as he
contains only air, the gel is not detrimental to it. Everything else
of pipes is in the shelter.

Le dessin schématique annexé représente, à titre d'exemple non limitatif, un digesteur de gaz biologiques perfectionné suivant l'invention. The appended schematic drawing represents, by way of nonlimiting example, an improved biological gas digester according to the invention.

La matière liquide à dégazer est amenée de la conduite d'alimentation 1 au moyen de la pompe 2 à travers l'embase 3 du fond conique 4 du conteneur 5 dans le tube injecteur central 6 à travers lequel sont également entrainées les particules pondéreuses jusqu'à un niveau 7 déterminé par une conduite verticale coudée suivant un U renversé. L'une de ses branches 8 est raccordée à l'embase 3 et communique avec l'intérieur du conteneur. The liquid material to be degassed is brought from the supply line 1 by means of the pump 2 through the base 3 of the conical bottom 4 of the container 5 into the central injector tube 6 through which the heavy particles are also entrained up to at a level 7 determined by a bent vertical pipe following an inverted U. One of its branches 8 is connected to the base 3 and communicates with the interior of the container.

Seul le surplus ou résidu s'écoule à travers la branche 9 vers l'extérieur pour être recueilli dans un récipient quelconque 10 aux fins d'utilisation ultérieure comme engrais. La prise d'air 11 au sommet du coude de la tubulure 8, 9 empêche que celle-ci agisse en siphon.Only the surplus or residue flows through the branch 9 to the outside to be collected in any container 10 for later use as fertilizer. The air intake 11 at the top of the elbow of the tubing 8, 9 prevents the latter from acting as a siphon.

Un échangeur thermique 12, alimenté par une source de chaleur extérieure appropriée, maintient la température de la masse en traitement à une valeur sensiblement constante (de l'ordre de 350 C). A heat exchanger 12, supplied by an appropriate external heat source, maintains the temperature of the mass under treatment at a substantially constant value (of the order of 350 C).

Les gaz dégagés de la masse en traitement s'accumulant au sommet du conteneur 5 au-dessus du niveau 7, s'-échappent en vertu de la surpression régnant à cet endroit par la conduite 13 pour être recueillis après avoir subi un décantagé et un séchage dans des dispositifs adéquats 14, dans un gazomètre approprié. The gases released from the mass in treatment accumulating at the top of the container 5 above the level 7, escape by virtue of the overpressure prevailing there through the pipe 13 to be collected after having undergone decanting and a drying in suitable devices 14, in a suitable gasometer.

Pour expulser les particules lourdes s'étant déposées au fond du cône 14, il est prévu entre la conduite d'alimentation I et la pompe 2 un embranchement 15 assurant une liaison directe avec la tubulure 8 au moyen d'une vanne de dérivation (by-pass) 16. Il suffit alors de fermer la vanne 17 de la conduite d'alimentation 1 et de faire communiquer la portion 8' de la conduite 8 avec l'embase 3 et, par elle, avec le fond du conteneur. To expel the heavy particles having deposited at the bottom of the cone 14, there is provided between the supply line I and the pump 2 a branch 15 ensuring a direct connection with the pipe 8 by means of a bypass valve (by -pass) 16. It then suffices to close the valve 17 of the supply line 1 and to make the portion 8 'of the line 8 communicate with the base 3 and, through it, with the bottom of the container.

En actionnant la pompe 2, il se produit, en circuit fermé, un brassage in tense avec comme effet de libérer le fond de ses dépôts et de réintégrer ceux-ci à la masse en traitement. By actuating the pump 2, there occurs, in a closed circuit, an intense mixing with the effect of releasing the bottom of its deposits and reintegrating them into the mass under treatment.

Claims (6)

REVENDICATIONS 1. Perfectionnements aux digesteurs de gaz biologiques constitués par un conteneur raccordé par des tuyauteries pour le chargement, le recueil des gaz de la masse liquéfiée en traitement et l'évacuation des résidus, caractérisés en ce que le conteneur 5 accuse un fond 4 conique vers le bas et que les tubulures 1, 6, 8, 9, 13, 15 sont prévues à l'intérieur de l'enceinte isolante et en partie immergées dans la masse en traitement. 1. Improvements to biological gas digesters constituted by a container connected by pipes for loading, collecting gases from the liquefied mass in treatment and the evacuation of residues, characterized in that the container 5 has a bottom 4 conical towards the bottom and that the pipes 1, 6, 8, 9, 13, 15 are provided inside the insulating enclosure and partly immersed in the mass being treated. 2. Perfectionnements selon la revendication 1, caractérisés en ce que le niveau 7 de la masse liquéfiée en traitement dans le conteneur 5 est déterminé par une tubulure coude en U renversé dont l'une des branches 8 communique à travers l'embase 3 du fond conique 4 avec l'intérieur du conteneur 5, l'autre branche 9 servant de conduite d'évacuation du trop-plein et des résidus et ne se trouvant pas en contact avec l'espace situé au-dessus du niveau 7 du liquide ob s'accumulent les gaz dégagés de celui-ci. 2. Improvements according to claim 1, characterized in that the level 7 of the liquefied mass being treated in the container 5 is determined by an inverted U-shaped elbow tube, one of the branches 8 of which communicates through the base 3 of the bottom. conical 4 with the interior of the container 5, the other branch 9 serving as a discharge pipe for the overflow and the residues and not being in contact with the space situated above the level 7 of the liquid ob s 'accumulate the gases released from it. 3. Perfectionnements selon la revendication 2, caractérisés en ce qu'au sommet du coude de la tubulure en U,8, 9, est greffé un reniflard ll empêchant que cette tubulure ne fonctionne en siphon. 3. Improvements according to claim 2, characterized in that at the top of the elbow of the U-shaped tubing, 8, 9, is grafted a breather ll preventing this tubing from functioning as a siphon. 4. Perfectionnements selon les revendications I et 2, caractérisés en ce que la conduite d'alimentation 1 pénètre à travers l'embase 3 du fond conique 4 dans le tube injecteur central 6. 4. Improvements according to claims I and 2, characterized in that the supply line 1 penetrates through the base 3 of the conical bottom 4 into the central injector tube 6. 5. Perfectionnements selon les revendications 1, 2 et 4, caractérisés en ce qu'une conduite de dérivation 15 détermine un circuit entre la conduite d'alimentation 1 et la branche 8 de la tubulure en U reliée à l'embase 3 du fond 4 du conteneur 5 avec insertion de la pompe 2, circuit délimité par la vanne 17 fermée de la conduite d'alimentation 1 et la vanne de dérivation 16 sur la branche 8, l'action de la pompe 2 provoquant un brassage intense du liquide avec l'effet d'expulser les particules pondéreuses se déposant dans le fond pour les réintégrer à la masse en traitement. 5. Improvements according to claims 1, 2 and 4, characterized in that a bypass pipe 15 determines a circuit between the supply pipe 1 and the branch 8 of the U-shaped tube connected to the base 3 of the bottom 4 of the container 5 with insertion of the pump 2, circuit delimited by the closed valve 17 of the supply line 1 and the bypass valve 16 on the branch 8, the action of the pump 2 causing intense mixing of the liquid with the effect of expelling the heavy particles depositing in the bottom to reintegrate them into the mass under treatment. 6. Perfectionnements selon l'ensemble des revendications précédentes, caractérisés en ce que les dispositifs de décantage et de séchage des gaz recueillis par la conduite 13 débouchant au sommet intérieur du conteneur, ainsi que la pompe > sont logés dans l'espace disponible autour et sous le. fond conique 4 du conteneur 5 à l'abri d'une enveloppe isolante recouvrant l'installation. 6. Improvements according to all of the preceding claims, characterized in that the devices for decanting and drying the gases collected by line 13 opening at the interior top of the container, as well as the pump> are housed in the space available around and under the. conical bottom 4 of the container 5 sheltered by an insulating envelope covering the installation.
FR8008114A 1980-04-10 1980-04-10 Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost Withdrawn FR2480062A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8008114A FR2480062A1 (en) 1980-04-10 1980-04-10 Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost
FR8207834A FR2526265A2 (en) 1980-04-10 1982-05-04 Agitated organic liq. digester for prodn. of methane - contains perforated panels to support and retain bacteria

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8008114A FR2480062A1 (en) 1980-04-10 1980-04-10 Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost

Publications (1)

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FR2480062A1 true FR2480062A1 (en) 1981-10-16

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FR8008114A Withdrawn FR2480062A1 (en) 1980-04-10 1980-04-10 Digester vessel producing methane from organic waste - is raised clear of ground and protects all pipework from frost

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105943A1 (en) * 1982-10-08 1984-04-25 Ökotherm Vertriebs-GmbH Process and apparatus for the production of biogas from a biogas mass
FR2580294A1 (en) * 1985-04-16 1986-10-17 Sgn Soc Gen Tech Nouvelle Fermentation process and improvement to packed fermenters.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR874378A (en) * 1941-03-31 1942-08-05 Baudot Hardoll & O F T A Reuni Digester device for sludge treatment
DE852378C (en) * 1949-06-28 1952-10-13 Walter Dr Eggersgluess Method and device for the destruction and application of floating sludge layers in septic tanks
DE2821790A1 (en) * 1978-05-18 1979-11-22 Hermann Besler Organic waste digestion - in heated fermenting tank with sludge circulation and gas extraction producing fertiliser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR874378A (en) * 1941-03-31 1942-08-05 Baudot Hardoll & O F T A Reuni Digester device for sludge treatment
DE852378C (en) * 1949-06-28 1952-10-13 Walter Dr Eggersgluess Method and device for the destruction and application of floating sludge layers in septic tanks
DE2821790A1 (en) * 1978-05-18 1979-11-22 Hermann Besler Organic waste digestion - in heated fermenting tank with sludge circulation and gas extraction producing fertiliser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105943A1 (en) * 1982-10-08 1984-04-25 Ökotherm Vertriebs-GmbH Process and apparatus for the production of biogas from a biogas mass
FR2580294A1 (en) * 1985-04-16 1986-10-17 Sgn Soc Gen Tech Nouvelle Fermentation process and improvement to packed fermenters.

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