EP4114664A1 - Procédé pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées - Google Patents

Procédé pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées

Info

Publication number
EP4114664A1
EP4114664A1 EP21708640.4A EP21708640A EP4114664A1 EP 4114664 A1 EP4114664 A1 EP 4114664A1 EP 21708640 A EP21708640 A EP 21708640A EP 4114664 A1 EP4114664 A1 EP 4114664A1
Authority
EP
European Patent Office
Prior art keywords
fiber
washed
organic residues
rich
conditioned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21708640.4A
Other languages
German (de)
English (en)
Inventor
Franziska SAFT
Burkhardt Fassauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP4114664A1 publication Critical patent/EP4114664A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H99/00—Subject matter not provided for in other groups of this subclass, e.g. flours, kernels
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/026—Separating fibrous materials from waste
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the invention relates to the field of processing technology and relates to a method for processing and recovering fibers from organic residues for the production of molded parts.
  • molded parts are, for example, plant pots or containers or capsules or paper or mulch films or mulch mats or mulch papers or seed carriers or carriers or packaging or plastic substitute products.
  • organic residues of biogenic origin are, for example, sludge, stillage, fermentation products, manure or plant residues. They often contain fibers of biogenic origin, so-called natural fibers.
  • Substances of biogenic origin means that such substances are of biological or organic origin or have been created by living beings.
  • a so-called cascaded use is recommended in the following order: 1. Material use, 2. Energy use, 3. Disposal.
  • Natural fibers from organic residues are sometimes already being used for material purposes, e.g. in the furniture or paper industry or as insulating materials, but only to a very limited extent as an admixture with other materials, i.e. with low functionality.
  • the material use of these natural fibers with higher-quality functionality and in higher proportions is usually hindered by the fact that these fibers made from organic residues are usually not of the quality that enables problem-free further material use. They usually have adherences of sand, stones, mineral or organic particles and other contaminants that have to be removed in a laborious manner.
  • the object of the present invention is to provide a simple and inexpensive process for the extraction and processing of fibers from organic residues for the production of molded parts which have high dimensional stability and stability without or with extremely little use of additives.
  • a fiber-rich portion is obtained from the organic residues, then the fiber-rich portion from the organic residues is washed one or more times, then either the washed fiber-rich portion is washed conditioned, fractionated and packaged from the organic residues, or the washed fiber-rich portion from the organic residues is fractionated, conditioned and packaged, and in all cases the fibers obtained are then processed into molded parts by means of molding processes.
  • fiber-rich fraction is obtained from the organic residues by means of direct removal from the place where the residues arise, by sieving, filtration, centrifugation and / or flotation or by a combination of these processes using screw presses, decanter centrifuges or belt filters.
  • the fiber-rich fraction from the organic residues is likewise advantageously washed several times, advantageously 2 to 10 times.
  • the washing liquid is at least partially removed from the washed fiber-rich fraction of the organic residues by means of solid / liquid phase separation
  • the solid / liquid phase separation by means of pressing and / or centrifugation and / or swim-sink separation and / or flotation and / or sedimentation is carried out.
  • washes are also advantageously carried out in washing liquid from water and / or aqueous solutions, such as the partially purified and recycled washing water, or with process-supporting active ingredients, such as advantageously solubilizers, mixed washing water and / or the liquid phase of the solid / liquid phase separation.
  • process-supporting active ingredients such as advantageously solubilizers, mixed washing water and / or the liquid phase of the solid / liquid phase separation.
  • the fiber-rich fractions from the organic residues are divided and / or shredded and / or the fiber-rich fractions are advantageously conditioned, the washed, fiber-rich fractions being advantageously conditioned is realized from the organic residues by means of mechanical and / or thermal and / or chemical stress, such as pressure, shear or impact, through heating or interaction with reagents or a combination of the stresses.
  • the production of the starting materials for the subsequent shaping is realized as packaging of the washed, conditioned and fractionated or the washed, fractionated and conditioned fiber-rich fractions from the organic residues
  • packaging of the washed, conditioned and fractionated is also advantageously implemented or the washed, fractionated and conditioned fiber-rich fractions from the organic residues by application-related and processing-related mixing, fiberization, hardening and / or wrapping of washed, fractionated and conditioned fiber-rich fractions with one another or by application-related and processing-related mixing, fiberization, hardening and / or wrapping of washed, fractionated and conditioned fiber-rich fractions with one another and the addition of production or application-related auxiliaries and additives, and / or advantageously Biomass adhesives, fillers, hardeners, mold release agents, rosin, bauxite and / or wet strength agents are used as production or application-related auxiliaries and additives.
  • the washed, fiber-rich portion is fractionated from the organic residues, then conditioned and packaged and then processed into a molded part using a shaping process.
  • the fiber-rich portion from the organic residues is processed into molded parts after packaging using injection or die-casting processes or thermoforming processes or 3D printing processes or paper and cardboard manufacturing processes.
  • the fiber-rich portion of the organic residues can be obtained, for example, by direct removal from the place of origin of the residues, by sieving, filtration, centrifugation or flotation or by combinations of these processes, by means of screw presses, decanter centrifuges or belt filters.
  • Organic residues, from which a fiber-rich fraction is obtained according to the method according to the invention can, for example, organic residues from biogas production plants with input substrates, such as manure or faeces from pig, cattle or chicken rearing, stable litter, maize, straw, wood chips (also from energy crops) , Be whole plant silage, which are collectively referred to as digestate.
  • input substrates such as manure or faeces from pig, cattle or chicken rearing, stable litter, maize, straw, wood chips (also from energy crops) , Be whole plant silage, which are collectively referred to as digestate.
  • other substances can also be organic residues, such as straw, residues of useful and ornamental plants, such as shrub residues or crop residues from annual or perennial plants, such as tomato plants, potato tops, grasses, asparagus, hop tendrils, or plant residues that are used in the landscape or garden or water maintenance, such as mowing the edge of the bank and mechanical weeding of water, green cuttings or reeds or cuttings or clippings or leaves.
  • organic residues such as straw, residues of useful and ornamental plants, such as shrub residues or crop residues from annual or perennial plants, such as tomato plants, potato tops, grasses, asparagus, hop tendrils, or plant residues that are used in the landscape or garden or water maintenance, such as mowing the edge of the bank and mechanical weeding of water, green cuttings or reeds or cuttings or clippings or leaves.
  • the fiber-rich fraction from the organic residues is then washed one or more times, advantageously 2 to 10 times.
  • the washing liquid is at least partially removed from the washed fiber-rich fraction of the organic residues by means of solid / liquid phase separation, the solid / liquid phase separation being carried out by means of pressing and / or centrifugation.
  • washings also take place in washing liquid, which can consist of water and / or aqueous solutions, such as the partially purified and recycled washing water, or with process-supporting active ingredients, such as advantageously solubilizers, mixed washing water and / or the liquid phase of the solid / liquid phase separation.
  • process-supporting active ingredients such as advantageously solubilizers, mixed washing water and / or the liquid phase of the solid / liquid phase separation.
  • the washed, fiber-rich portion from the organic residues can be conditioned, fractionated and packaged and then the fibers obtained can be processed into molded parts by means of shaping processes.
  • the washed, fiber-rich fraction from the organic residues can be fractionated, conditioned and packaged and then the fibers obtained can be processed into molded parts by means of molding processes.
  • a division and / or comminution and / or fiberization of the fiber-rich fractions from the organic residues is implemented according to the invention, whereby the fibers are further processed.
  • inventive conditioning of the washed, fiber-rich fractions from the organic residues can be implemented by means of mechanical and / or thermal and / or chemical stress, such as pressure, shear or impact, through heating or interaction with reagents or a combination of stresses.
  • the fractionation is carried out according to the invention on the total amount of the fiber-rich portion washed and conditioned according to the first variant of the invention from the organic residues or on the total amount of the fiber-rich portion washed according to the second variant of the invention from the organic residues.
  • the washed, fiber-rich fractions from the organic residues can, however, also be fractionated into two or more partial quantities and fed to the conditioning.
  • these subsets can be brought together again after conditioning or can be fed in subsets for packaging.
  • the fractionation of the washed or washed and conditioned fiber-rich fractions from the organic residues can be carried out by separating them into at least two fractions with regard to their amount, fiber width, fiber length, fiber type, moisture content and / or degree of fiberization at the ends and / or over the entire fiber length ( Fibrillation).
  • This can be realized, for example, by sieving or air sifting or centrifugation or sedimentation or flotation or swim-sink separation.
  • the fractionation of the washed or washed and conditioned fiber-containing fractions from the organic residues can be done, for example, to fiber lengths of 0.1 mm to 15 cm, advantageously from 1 mm to 5 mm or from 0.5 cm to 2 cm, and / or to fiber widths from 0.1 mm to 1 cm, advantageously from 0.5 mm to 5 mm.
  • fractionation In the fractionation according to the invention, a separation is realized in which a certain amount of the washed or washed and conditioned fiber-rich fraction from the organic residues is divided into a number of smaller amounts (“fractions”). These smaller quantities usually have a range of identical or similar properties, such as fiber lengths or widths - or types.
  • the smaller, fractionated quantities can each be fed separately to the conditioning and, after their conditioning in these smaller, fractionated quantities, can be fed back to the packaging either together or in part or in each case individually. This can be implemented in relation to the application and processing.
  • the packaging of the washed, conditioned and fractionated or the washed, fractionated and conditioned fiber-rich fractions from the organic residues is carried out according to the invention by producing starting materials for the subsequent shaping. These starting materials for the shaping are made application-related and processing-related by the packaging. As Processes for packaging can be used, for example, such as mixing, fiber opening, hardening and / or wrapping.
  • the packaging of the washed, conditioned and fractionated or the washed, fractionated and conditioned fiber-rich fractions from the organic residues is achieved through application and processing-related mixing of washed, fractionated and conditioned fiber-rich fractions with one another or by application and processing-related mixing of washed, fractionated ones and conditioned fiber-rich proportions with one another and the addition of manufacturing or application-related auxiliaries and additives.
  • Biomass adhesives, fillers, hardeners, mold release agents, rosin, bauxite and / or wet strength agents can be used as production or application-related auxiliaries and additives.
  • the invention it is possible to produce molded parts from the fibers of organic residues even without the addition of additives as production or application-related auxiliaries and additives.
  • additives as production or application-related auxiliaries and additives.
  • very small amounts a maximum of 10% based on the mass of the washed, conditioned and fractionated or the washed, fractionated and conditioned natural fibers, of such additives can be added as manufacturing or application-related auxiliaries and additives.
  • the fiber-rich fractions from the organic residues are processed and prepared for the further processing steps and the composition and properties of the starting materials that are advantageous for further processing are set by fractionation and packaging.
  • Such shaping processes are, for example, injection or die casting processes or thermoforming processes or 3D printing processes or paper and cardboard manufacturing processes with which the starting materials are further processed into molded parts.
  • the particular advantage and surprising and unexpected effect of the process according to the invention is that the fibers obtained have such properties that during a subsequent shaping process not necessarily - as in the prior art - further substances, compounds, additives, additives as production or application-related auxiliaries - and additives the starting materials for the Molding processes have to be added in order to produce dimensionally stable and stable molded parts.
  • the previously restricted material usability of the fibers of organic residues can be significantly improved.
  • fibers of biogenic origin are obtained from organic residues and processed with low levels of contaminants in such a way that - for the first time and surprisingly - they are processed into high-quality molded parts for further material use of the organic residues even without the use of additives as manufacturing or application-related auxiliaries and additives and can be used.
  • Another advantage of the method according to the invention consists in the use of methods for washing, fractionation, conditioning and packaging, which are inexpensive and therefore inexpensive and simple. Furthermore, as a result of the dispensing with additives as production or application-related auxiliaries and additives, no further impurities get into the molded bodies made of fibers from organic residues according to the invention.
  • the moldings produced from the fibers produced according to the invention from organic residues can be plant pots or containers or capsules or paper or mulch films or mulch mats or mulch papers or seed carriers or carrier products or packaging or propagation papers or sanitary articles or disposable crockery or young plant pots / peat substitutes or plastic substitute products.
  • the raw material for fiber production is a digestate from a biogas production plant as an organic residue.
  • This digestate consists of 90% io Liquid and has a solids content of 10% by mass.
  • 50 t are treated with a screw press and subjected to a solid-liquid phase separation. The liquid phase is separated off and the fiber-rich portion of 1.25 t, which has a dry residue of 25% by mass, is reused.
  • the fiber-rich portion of the digestate is washed in a washer to remove contaminants.
  • the addition of liquid is adjusted to the degree of soiling.
  • Digestate as a solid phase is washed with 10 times the amount of liquid based on the original substance weight of the solid phase. If the degree of soiling is very high, more washing liquid is added.
  • the scrubbing liquid in the washer is water and the liquid phase of the digestate after the solid-liquid phase separation.
  • the proportion of sand is reduced from 3 to 5% to 0.5 to 1%.
  • the organic fine content is reduced by a third.
  • the washes are carried out 5 times.
  • the washing liquid is separated from the fiber-rich portion of the fermentation residue by means of a screw press, collected and part of it is returned to the washer.
  • the fiber-rich digestate is conditioned.
  • the washed fiber material is subjected to mechanical stress in a cutting mill.
  • the fibers are cut to fiber lengths in the range from 0.1 mm to 5 mm and fiber widths from 0.1 mm to 2 mm.
  • the fiber material conditioned in this way is then fractionated.
  • the fractionation takes place through sieves.
  • the pore sizes of the sieves depend on the planned use of the fiber-rich digestate prepared according to the invention.
  • fibrous digestate of 5mm and 200 ⁇ m is required, which is fractionated by sieving. This results in three fiber fractions with fiber lengths x of x> 5 mm in length, 200 pm ⁇ x 5 mm and x ⁇ 200 pm. This is followed by the packaging of the washed, conditioned and fractionated fiber-containing digestate, which is also based on the planned production of molded parts.
  • the fiber fractions 200 ⁇ m ⁇ x 5 mm and ⁇ 200 ⁇ m are mixed in a mass ratio of 80:20, moistened and treated with a pulper / deflaker.
  • digestate fibers produced in this way are used as starting materials for shaping for the production of mulch paper.
  • the starting materials are used in a device for the production of paper and a paper-like molded part is obtained as mulch paper, which has a very high dimensional stability and stability.
  • This mulch paper can be used, for example, as growing paper.
  • the liquids that arise from the process stages are advantageously treated and reused in the process.
  • Solid-liquid separation processes such as sieving and filtration are used for this purpose.
  • the raw material for fiber production is made up of tomato plants from fruit vegetable production as an organic residue.
  • This tomato plant residue consists of 90% by mass of liquid and has a solids content of 10% by mass.
  • 50 t of this are treated with a screw press and subjected to a solid-liquid phase separation.
  • the liquid phase is separated off and the fiber-rich portion of 1.5 t, which has a dry residue of 30% by mass, is reused.
  • the fiber-rich portion is washed in a washer to remove contaminants.
  • the addition of liquid is adjusted to the degree of soiling.
  • the tomato plant residue as a solid phase is washed with 2-5 times the amount of liquid based on the original substance weight of the solid phase. If the degree of soiling is very high, more washing liquid is added.
  • the washes are carried out 3 times.
  • the washing liquid is separated from the fiber-rich portion of the tomato plant residue by means of a screw press, collected and part of it is returned to the washer.
  • the fiber-rich portion of the tomato plant residue is dried to a residual moisture content of ⁇ 10%. After drying, fractionation is carried out by means of sieving.
  • the pore sizes of the sieves depend on the planned use of the fiber-rich portion of the tomato plant residue prepared according to the invention.
  • fractions of the processed fiber-rich portion of the tomato plant residue of 100 mm and 1 mm fiber length are required.
  • Three fiber fractions with fiber lengths x of x> 100 mm in length, 1 mm ⁇ x ⁇ 100 mm and x ⁇ 1 mm of the processed fiber-rich portion of the tomato plant residue were produced by sieving.
  • the fiber fraction> 100 mm produced is moistened and treated with a pulper / deflaker.
  • the fraction 1 mm ⁇ x ⁇ 100 mm is added to the deflaked fiber mixture> 100 mm without further treatment.
  • 10% by mass of starch can be added as an additive.
  • the fiber mixture produced in this way is used as the starting material for shaping for the production of bowls.
  • the starting materials are used in a device for producing molded shells and a molded part is obtained which has a very high degree of dimensional stability and stability.
  • This molded part can be used, for example, as packaging.
  • the liquids that arise from the process stages are advantageously treated and reused in the process.
  • Solid-liquid separation processes such as sieving and filtration are used for this purpose.
  • a combination of a molded product, such as waste paper, produced as described in Example 1, and a fiber mixture, as indicated in Example 2, is also possible for the production of molded shells.
  • the waste paper and the processed fiber mixture are brought together in one step using thermal printing processes to form a composite molding, such as flower pots.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Cette invention se rapporte au domaine des techniques de retraitement et concerne un procédé pour produire des pièces moulées telles que des pots à fleur ou des contenants. L'objectif de cette invention est de concevoir un procédé simple et peu onéreux pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées présentant une invariance de forme et une stabilité. À cet effet, le procédé selon l'invention consiste : à récupérer une proportion riche en fibres à partir des matières résiduelles organiques ; à laver une ou plusieurs fois cette proportion riche en fibres provenant des matières résiduelles organiques ; et soit à conditionner, fractionner et assembler la proportion riche en fibres provenant des matières résiduelles organiques et ayant été lavée, soit à fractionner, conditionner et assembler cette proportion riche en fibres provenant des matières résiduelles organiques et ayant été lavée, puis à façonner les fibres obtenues au moyen d'un procédé de façonnage de manière à produire des pièces moulées.
EP21708640.4A 2020-03-06 2021-02-26 Procédé pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées Withdrawn EP4114664A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020106155 2020-03-06
PCT/EP2021/054867 WO2021175719A1 (fr) 2020-03-06 2021-02-26 Procédé pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées

Publications (1)

Publication Number Publication Date
EP4114664A1 true EP4114664A1 (fr) 2023-01-11

Family

ID=74797946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21708640.4A Withdrawn EP4114664A1 (fr) 2020-03-06 2021-02-26 Procédé pour obtenir et traiter des fibres provenant de matières résiduelles organiques pour produire des pièces moulées

Country Status (3)

Country Link
EP (1) EP4114664A1 (fr)
DE (1) DE102021105261A1 (fr)
WO (1) WO2021175719A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3934478A1 (de) * 1989-10-16 1991-04-18 Organ Faser Technology Co Verfahren zur aufbereitung von haushalts-, gewerbe- und anderen vergleichbaren abfaellen mit gewinnung eines cellulosematerials
CN102440158A (zh) 2011-10-13 2012-05-09 山东省农业科学院农业资源与环境研究所 一种沼渣营养钵及其制备方法和应用
CN105732193B (zh) 2016-01-29 2019-10-15 郑州博林建筑工程有限公司 一种利用沼渣汽爆技术制取蘑菇营养钵的工艺
CN106977970B (zh) 2017-04-18 2019-05-03 江苏省农业科学院 一种利用改性沼渣纤维制备育秧盘的方法

Also Published As

Publication number Publication date
WO2021175719A1 (fr) 2021-09-10
DE102021105261A1 (de) 2021-09-09

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