NL2007663C2 - Method for recycling horticultural waste. - Google Patents
Method for recycling horticultural waste. Download PDFInfo
- Publication number
- NL2007663C2 NL2007663C2 NL2007663A NL2007663A NL2007663C2 NL 2007663 C2 NL2007663 C2 NL 2007663C2 NL 2007663 A NL2007663 A NL 2007663A NL 2007663 A NL2007663 A NL 2007663A NL 2007663 C2 NL2007663 C2 NL 2007663C2
- Authority
- NL
- Netherlands
- Prior art keywords
- waste
- horticultural
- energy
- forming station
- station
- Prior art date
Links
- 239000002699 waste material Substances 0.000 title claims description 68
- 238000000034 method Methods 0.000 title claims description 54
- 238000004064 recycling Methods 0.000 title description 27
- 238000004519 manufacturing process Methods 0.000 claims description 31
- 239000002028 Biomass Substances 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 28
- 239000010815 organic waste Substances 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000002361 compost Substances 0.000 claims description 9
- 239000000356 contaminant Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 240000004160 Capsicum annuum Species 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 4
- 238000000855 fermentation Methods 0.000 claims description 4
- 230000004151 fermentation Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 241000196324 Embryophyta Species 0.000 claims 7
- 240000003768 Solanum lycopersicum Species 0.000 claims 1
- 241000227653 Lycopersicon Species 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000696 methanogenic effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 241000722363 Piper Species 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000011093 chipboard Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-AKLPVKDBSA-N carbane Chemical compound [15CH4] VNWKTOKETHGBQD-AKLPVKDBSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Processing Of Solid Wastes (AREA)
Description
NLP189525A
Method for recycling horticultural waste BACKGROUND
The invention relates to a method for recycling horticultural waste.
5 A known method for recycling horticultural waste comprises dumping the horticultural waste on a compost location to be composted or using it as landfill in order to comply with recycling regulations. Due to the vast amounts of horticultural waste, the compost locations will cover a 10 large land area, which could be used more economically. Also, at some point, the landfill areas are filled, rendering the horticultural waste useless. This results in the occasional illegal burning of the surplus of horticultural waste. This way of disposing of the horticultural waste is 15 environmentally unfriendly as it releases carbon-dioxides into the environment, thus contributing to the greenhouse gasses.
It is an object of the present invention to provide an alternative method for recycling horticultural 20 waste.
SUMMARY OF THE INVENTION
25 According to an aspect, the invention provides a method for recycling horticultural waste in a factory, 2 wherein the factory comprises a production line with a flake forming station and a board forming station, wherein the method comprises the steps of supplying horticultural waste to the flake forming station, converting the horticultural 5 waste at the flake forming station into flakes of horticultural waste, transporting the flakes of horticultural waste from the flake forming station to the board forming station, compressing the flakes of horticultural waste together at the board forming station to form a board.
10 The factory can manufacture boards out of horti cultural waste which would otherwise be composted, used as land fill or illegally burned. The resulting board can be an environmentally friendly alternative to plywood, chipboards, oriented strand boards (OSB), multiplex and/or conventional 15 fibreboards such as medium density fibre boards (MDF), hardboard and softboard.
In an embodiment the horticultural waste comprises residues of the group comprising tomato plants, paprika plants (pepper plants). The leaves of tomato plants and 20 paprika plants (pepper plants) can be used as input material to manufacture a homogenous, stable board.
In an embodiment the factory comprises a recycling section for recycling unused energy or material byproducts of the manufacturing of the board. The recycling of unused 25 energy or material byproduct can reduce the carbon footprint and/or the environmental impact of the factory.
In an embodiment the recycling section is provided with a biomass energy installation, wherein the method comprises supplying organic waste to the biomass installa-30 tion, extracting energy from the organic waste in the biomass installation, preferably with the use of combustion, gasification or fermentation, transporting the extracted energy from the biomass installation to the production line for providing energy which is required for the manufacturing 35 of the board. The internally generated energy can reduce the need for external supply of energy to the factory.
In an embodiment the extracted energy comprises 3 heat energy. The internally generated energy can reduce the need for external supply of heat energy to the factory.
In an embodiment the extracted energy is converted in the biomass installation to comprise electrical energy.
5 The internally generated energy can reduce the need for external supply of electrical energy to the production line.
In an embodiment the amount of converted electrical energy supplied by the biomass installation to the production line corresponds to at least 80%, preferably at 10 least 90%, most preferably 100% of the amount of electrical energy required by the production line. Hence, the factory can be self sustaining or powered autonomously without using environmentally unfriendly energy sources such as fossil fuels and other non-renewable sources which emit carbon-15 dioxides.
In an embodiment, as a result of the extraction of energy, the organic waste is reduced to digestate, wherein the method comprises collecting the digestate for use as a mix component for compost. The invaluable digestate can be 2 0 used as a valuable mix component for compost, thereby converting the organic waste into a non-waste, environmentally friendly product. The compost containing the digestate mix can improve plant growth and/or reduce soil erosion.
In an embodiment the production line further 25 comprises a separator station, wherein the method comprises extracting contaminants from the horticultural waste at the separator station, prior to the horticultural waste being supplied to the flake forming station. The contaminants are removed to prevent inconsistencies in the base material for 30 the board.
In an embodiment the contaminants comprise materials of the group comprising unwanted or non-horticultural organic waste, plastics, metals and minerals such as glass, sand, wool and stones. The aforementioned contaminants can 35 cause inconsistencies in the base material for the board.
In an embodiment the method comprises recycling the unwanted or non-horticultural organic waste which is 4 extracted from the horticultural waste at the separator station by adding it to the organic waste that is supplied to the biomass installation. The organic waste from the separator station, which would otherwise be composted, used 5 as land fill or illegally burned, can be used to generate energy in the biomass installation.
In an embodiment the recycling section comprises a plastic recycling installation, wherein the method comprises recycling the plastics which are extracted from the horti-10 cultural waste at the separator station. The plastics can be reused to form new plastic products.
In an embodiment the flake forming station comprises a grinder that grinds the horticultural waste to a specific flake size. The specific flake size can be set to 15 correspond to a required aftermarket specification.
In an embodiment the method comprises adding a resin to the flakes before the flakes are transported to the board forming station. The resin can bind the flakes together when they are compressed at the board forming station 20 in order to form a stable board.
In an embodiment the resin is free of formaldehyde. The resin can be designed to be free of formaldehyde to reduce the environmental impact of the resin. Formaldehyde forms a health risk which makes boards comprising 25 formaldehyde resin less likely to be allowed in environmentally sensitive areas such as schools, nurseries, hospitals, laboratories, nursing homes and other public buildings.
In an embodiment the production line further comprises a drying station, wherein the method comprises 30 drying the horticultural waste at the drying station, prior to the horticultural waste being supplied to the flake forming station. The drying can reduce the moisture content of the horticultural waste to a level which is required for the manufacture of the board.
35 In an embodiment the method comprises drying the horticultural waste by exposing it to a natural heat source, preferably the sun. The sun can supply heat energy to the 5 drying station without adding to the carbon footprint of the factory.
In an embodiment the method comprises drying the horticultural waste by exposing it to heat from the biomass 5 installation. The heat energy generated by the biomass installation can reduce the need for external supply of heat energy to the production line.
In an embodiment the method comprises drying the horticultural waste until its moisture content is equal or 10 less than 15%. The low moisture content can reduce the negative effects that moisture can have on the board.
In an embodiment the method comprising one or more features or steps described in the description and/or depicted in the attached figures.
15 The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applica-20 tions.
BRIEF DESCRIPTION OF THE DRAWINGS
25 The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:
Figure 1 shows a schematic drawing of the steps of a method for manufacturing a chipboard according to an 30 embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
35 Figure 1 shows a schematic drawing of a method for recycling horticultural residues or waste 1 into a panel or board C comprising flakes from the horticultural waste 1, 6 according to an embodiment of the invention. The resulting board C is an environmentally friendly, high quality, cradle to cradle alternative to plywood, chipboards, oriented strand boards (OSB), multiplex and/or conventional fibre-5 boards such as medium density fibre boards (MDF), hardboard and softboard. The method is carried out in a factory which comprises a production line A and a recycling section B. The details of the factory will be described hereafter.
The production line A comprises a first material 10 input in the form of bulk horticultural residues or waste 1, in particular tomato plants, paprika plants (pepper plants), which would otherwise be composted, used as land fill or illegally burned. The horticultural waste 1 is contaminated with unwanted fractions such as non-horticultural or miscel-15 laneous organic waste 4, plastics 5, minerals 6 such as glass, sand, wool and stones and other unusable components such as metals which can result in an inconsistent base material for the board C. Horticultural waste 1 from tomato plants generally has a high percentage of plastic contami-20 nants which originate from the plastic robes and clips that are used in glasshouses to guide the tomato plants as they grow up to fifteen meters in length.
At entry in the production line A, the horticultural waste 1 generally has a moisture content of 60 to 70%. 25 The horticultural waste 1 is supplied to a drying station 2, which exposes the horticultural waste 1 to natural heating, such as from the sun, or to the heat of a mechanical dryer. The horticultural waste 1 remains in the drying station 2 until its moisture content is reduced to preferably equal to 30 or less than 15%.
The dried horticultural waste 1 is then transported to a separator station 3. The separator station 3 comprises separator tools such as shredders, magnets, sifters or presses to extract the aforementioned contaminants 35 from the horticultural waste 1. The separator station 3 outputs different fractions. The fine fraction 7 comprises horticultural waste 1 which is ready as a base material for 7 the board C. A midsized fraction is recirculated within the separator station 3 for further separation. The course fraction undergoes further separation into organic waste 4, plastics 5, minerals 6 and other unusable components.
5 The fine fraction 7 of the horticultural waste 1 is then transported to a flake forming station 8. The fine fraction 8 is grinded into a desired grain size to form flakes 9. Subseguently, a resin 10 is added to the flakes 9. The resin 10 is preferably produced without formaldehyde to 10 comply with environmental regulations.
The flakes 9 of horticultural waste 1 mixed with the resin 10 are then transported to the board forming station 11. In the board forming station 10, the flakes 9 are heated up to a high temperature and compressed by 15 presses 12 to form a stable, homogeneous board C comprising flakes 9 of horticultural waste 1. The board C is cut by a saw 13 into desired dimensions, depending on the aftermarket requirements. The board C is typically used in the furniture industry, the interior decoration industry, the building 20 industry, construction industry and industrial packing industry.
Any unused flakes 9 are collected and returned via a return loop 15 from the board forming station 10 to the flake forming station 9. From there, the flakes 9 are again 25 mixed with the resin 10 and subsequently transported to the board forming station 11. With the recycling of the unused flakes 9, the output tonnages of boards C can be as much as 90% of the input tonnages of the horticultural waste 1. The capacity of a single production line A is approximately 30 30.000 to 100.000 tons of horticultural waste 1 per year.
The recycling section B comprises a biomass installation 16. The organic waste 4 is transported from the separator station 3 to the biomass installation 16. At the biomass installation 16, the organic waste 4 is combined 35 with a second material input in the form of biodegradable or organic waste 17, such as fruits, leaves, vegetable oil, manure or specially grown crops, which would otherwise be 8 composted, used as land fill or illegally burned. The organic waste 17 is cleaned and then processed in the biomass installation 16. The biomass installation 16 extracts energy from the organic waste 17 by applying combustion, gasifica-5 tion or fermentation techniques. During fermentation, the energy from the organic waste 17 is released in the form of heat and/or heated gasses which are directly transferred via a conduit 18 to the drying station 2 and/or converted into electrical energy. The biomass installation 16 is connected 10 by electrical power lines 19, 20 to the drying station 2, the separation station 3, the flake forming station 8 and the board forming station 10 in order to provide electrical energy to the production line A, which electrical energy is required for the manufacturing of the board C 15 The electrical energy and the heating energy which is generated in the biomass installation 16 of the recycling section B can be considered as climate neutral or carbon-dioxide neutral bio-energy. The organic waste 17 is a byproduct from the natural eco-system and is renewable as it 20 can be replenished over time. The internally generated energy reduces the need for external supply of energy to the production line A. Hence, the production line can essentially be self sustaining or powered autonomously without using environmentally unfriendly energy sources such as 25 fossil fuels and other non-renewable sources which emit carbon-dioxides .
The organic waste 17 is converted in the biomass installation 16 into anaerobic digestate 22 and methanogenic digestate 26. The anaerobic digestate 22 has similar physi-30 cal and chemical characteristics when compared to compost. The anaerobic digestate 22 is considered a non-waste product and can be safely reused as bio-fertilizer, preferable in a mixing ratio with compost. The recycling section B is provided with a first depot 21 which receives and holds the 35 anaerobic digestate 22. The anaerobic digestate 22 is distributed from the first depot 21 to an external biofertilizer processing installation (not shown).
9
The methanogenic digestate 26 is a sludge which possesses high nutrients such as nitrates and phosphates. The valuable nutrients are filtered out of the methanogenic digestate 26 by a catalyst 25. The nutrients can be used to 5 improve plant growth, protect soil against erosion or as mix component for compost. The recycling section B is provided with a second depot 27 which receives and holds the nutrients from the methanogenic digestate 26. The nutrients are distributed from the second depot 27 to an external nutri-10 ents processing installation (not shown).
The recycling section B further comprises a plastics recycling installation 23, which is directly powered by the electrical energy from the biomass installation 16 via an electrical power line 20. The plastics 5 which are ex-15 tracted from the horticultural waste 1 are transported to the plastics recycling installation 23 are melted into plastic base material for use in production of plastic products .
The recycling section B further comprises a third 20 depot 24 that receives the minerals 6 and other unusable components which are extracted from the horticultural waste 1 at the separator station 3. The minerals 6 and other unusable components are distributed from the third depot 24 to a specialised external recycling installation (not shown) 25 or, if applicable, to a road builder for use as base material in road construction (not shown).
It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the 30 invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the spirit and scope of the present invention .
Claims (21)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2007663A NL2007663C2 (en) | 2011-10-27 | 2011-10-27 | Method for recycling horticultural waste. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2007663 | 2011-10-27 | ||
| NL2007663A NL2007663C2 (en) | 2011-10-27 | 2011-10-27 | Method for recycling horticultural waste. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2007663C2 true NL2007663C2 (en) | 2013-05-06 |
Family
ID=45350487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2007663A NL2007663C2 (en) | 2011-10-27 | 2011-10-27 | Method for recycling horticultural waste. |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2007663C2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028841A (en) * | 1978-08-26 | 1980-03-12 | Woopar Products Ltd | Method of producing composite material |
| US4528037A (en) * | 1981-02-12 | 1985-07-09 | Guidat Gilbert R | Method of manufacturing heat insulating aggregates or pellets and product thus obtained |
| US4857458A (en) * | 1985-12-05 | 1989-08-15 | Propiorga | Installation and plant for the recovery of energy from waste and residues |
| US5028299A (en) * | 1987-06-23 | 1991-07-02 | Gilbert Guidat | Installation for the continuous-flow production of stabilized chips or particles derived from wood waste |
| WO2011020000A2 (en) * | 2009-08-14 | 2011-02-17 | The Ohio State University Research Foundation | Combined liquid to solid-phase anaerobic digestion for biogas production from municipal and agricultural wastes |
-
2011
- 2011-10-27 NL NL2007663A patent/NL2007663C2/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028841A (en) * | 1978-08-26 | 1980-03-12 | Woopar Products Ltd | Method of producing composite material |
| US4528037A (en) * | 1981-02-12 | 1985-07-09 | Guidat Gilbert R | Method of manufacturing heat insulating aggregates or pellets and product thus obtained |
| US4857458A (en) * | 1985-12-05 | 1989-08-15 | Propiorga | Installation and plant for the recovery of energy from waste and residues |
| US5028299A (en) * | 1987-06-23 | 1991-07-02 | Gilbert Guidat | Installation for the continuous-flow production of stabilized chips or particles derived from wood waste |
| WO2011020000A2 (en) * | 2009-08-14 | 2011-02-17 | The Ohio State University Research Foundation | Combined liquid to solid-phase anaerobic digestion for biogas production from municipal and agricultural wastes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Lapsed because of non-payment of the annual fee |
Effective date: 20231101 |