WO2020245476A1 - Procedimiento y sistema para la eliminación de olores en plásticos reciclados - Google Patents
Procedimiento y sistema para la eliminación de olores en plásticos reciclados Download PDFInfo
- Publication number
- WO2020245476A1 WO2020245476A1 PCT/ES2019/070824 ES2019070824W WO2020245476A1 WO 2020245476 A1 WO2020245476 A1 WO 2020245476A1 ES 2019070824 W ES2019070824 W ES 2019070824W WO 2020245476 A1 WO2020245476 A1 WO 2020245476A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic
- odors
- elimination
- plastic materials
- steam
- Prior art date
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 111
- 229920003023 plastic Polymers 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 23
- 230000008030 elimination Effects 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 70
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 9
- 235000019645 odor Nutrition 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000004821 distillation Methods 0.000 claims description 18
- 238000004332 deodorization Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 12
- 150000002894 organic compounds Chemical class 0.000 claims description 11
- 239000012074 organic phase Substances 0.000 claims description 11
- 239000008346 aqueous phase Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 238000010908 decantation Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000001931 thermography Methods 0.000 claims description 3
- 238000004876 x-ray fluorescence Methods 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 238000001256 steam distillation Methods 0.000 abstract description 4
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000013502 plastic waste Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 229940087305 limonene Drugs 0.000 description 1
- 235000001510 limonene Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/38—Steam distillation
-
- 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
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
-
- 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
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
-
- 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
- B09B3/70—Chemical treatment, e.g. pH adjustment or oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/75—Plastic waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0279—Optical identification, e.g. cameras or spectroscopy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0293—Dissolving the materials in gases or liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0476—Cutting or tearing members, e.g. spiked or toothed cylinders or intermeshing rollers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/30—Polymeric waste or recycled polymer
Definitions
- the present invention refers to a procedure for the elimination of odors in recycled plastic materials from the extraction of volatile organic compounds by steam distillation, in addition to defining the system required for this.
- the present invention falls within the processes of eliminating odors in plastics, and specifically refers to a process that uses steam to clean plastics from domestic and industrial waste.
- the objective of the invention is to eliminate pollutants, and with them, volatile organic compounds (VOCs) that impart a bad smell to recycled plastics. This process is carried out from the extraction of VOCs by vapor entrainment.
- This invention applies to plastics of varied nature, such as polyethylene (PE), polypropylene (PP), polyester (PET), etc. from plastic waste, whether of industrial or domestic origin.
- plastic waste from industries can be treated by mechanical recycling obtaining a reusable high-quality material as polymeric raw material
- domestic plastic waste has a high content of food waste and cleaning products that are absorbed into the polymeric matrix, becoming pollutants and cause of bad odor.
- These odoriferous substances are volatile organic compounds that currently cannot be removed by conventional washing, which limits their reuse as raw material for products for outdoor use.
- patent CN 104552866 refers to a process for washing plastic material from a high-speed stirring tank, which then It goes through an extruder where the plastic is melted and purified water is added, which forms an azeotrope with the melted plastic mixture.
- the azeotrope is discharged together with the volatiles of the plastic and the water vapor through the vacuum outlet of the extruder, so that the intensity of the polymer's odor is reduced.
- WO0110721 refers to a method of reducing odors by ionizing rays in an atmosphere that is not necessarily inert.
- the JPS58196235 invention refers to a washing process in which polyolefins are washed with hot water containing dissolved oxygen to remove odors from plastic.
- the invention CN 107627487 relates to a washing process to eliminate odors in plastic waste.
- the process consists of the stages of chopping the plastic waste; washing with neutral surfactant and subsequent rinsing; washing with sodium hydroxide and subsequent rinsing; degradation of the plastic particles by hyphae fungi and subsequent rinsing and drying; (v) grinding the plastic particles to powder size; mixing of the plastic powder with a sodium hydroxide solution and subsequent rinsing; extrusion of the powder material to obtain the pellets.
- the aim of the present invention is to increase the quality of recycled plastics after eliminating odors by extracting volatile organic compounds with water vapor. These organic compounds are found both inside the polymeric matrix and on the surface of the plastic.
- the solution that is described in detail below is based on the fact that steam extraction favors the internal diffusion of volatile compounds due to the working temperature, as well as decreases the boiling point of volatile organic compounds as they are immiscible with the water and, therefore, favors its evaporation from the surface of the polymer to the gas phase and consequent elimination.
- the process requires a system or equipment that comprises means for selecting and crushing the material, among which a separation system and a blade crusher stand out; washing means, among which a washing tank, a rinsing tank and a dryer stand out; and a deodorization module, which consists of a system for eliminating the volatile organic compounds contained in the plastic and recovering them.
- This deodorization module is a hermetically closed circuit that allows temperature control and heat recovery.
- a column where the plastic to be deodorized is inserted, in which the plastic moves in countercurrent with the steam that enters through the base of the column and exits through the head.
- the boiling point of volatile organic compounds is always below the boiling point of water and therefore, working at atmospheric pressure, it is enough to feed the module with steam at 100 degrees.
- the boiling point of water increases and with it the temperature of the system, but you should always work below the plastic degradation temperature.
- the flow rate it depends on the dimensions of the reactor, therefore, this invention is not limited to a range of flow rates.
- the vapor that comes out at the top of the column after having been in contact with the recycled plastic and containing VOCs passes through a droplet separator that allows the organic phase contained to be removed.
- the droplet separator is a separate unit from the distillation column and in it the condensation of organic compounds takes place, that is, the organic compounds are trapped in the droplet separator by condensation while the clean, aqueous phase remains in the form steam.
- the part of steam that remains clean is returned to the steam boiler directly and the liquid part containing water and VOCs is taken to an isothermal tank, where the aqueous phase is separated from the organic part by decantation. The aqueous phase is fed back to the boiler, thus closing the water circuit.
- the organic phase is fed to a separator in which the water dissolved in the organic phase is obtained on the one hand and the organic compounds on the other.
- This separator can be a distillation column where the water evaporates, separating it from the organic compounds; a hydrophobic membrane where only organic compounds pass through the membrane or membrane separation by molecular size, which is possible if the size of the organic molecules differs significantly from the size of the water molecule; or equivalent devices or a combination of these.
- the waste water can be used to feed the boiler back, or for any other use.
- this organic phase is composed of essential oils that can be marketed, since these have a high value in the industry, such as limonene or pinene. If these oils are not to be marketed, the organic phase can be reused as fuel for steam generation.
- the fraction of plastic material coming from landfill or household recycled plastic container reaches the plastic waste treatment plant and is separated by identification using near infrared electroscopy (NIR), mid infrared electroscopy (MIR), IR infrared thermography , laser-induced plasma spectroscopy (LIBS) or X-ray fluorescence.
- NIR near infrared electroscopy
- MIR mid infrared electroscopy
- LIBS laser-induced plasma spectroscopy
- X-ray fluorescence X-ray fluorescence
- the bags, films, bottles and other containers that arrive at the plant, after being separated by type of material, are introduced into a knife shredder to cut the containers into flake form, or in cases where it is required, a cryogenic mill or grinder that reduces particles to powder size.
- a surfactant wash is carried out to remove dirt from the plastic material adhering to the surface. Both anionic and cationic or neutral surfactants can be used. Washing is carried out in a stirred tank type reactor.
- the plastic material is rinsed to remove dirt and chemicals used.
- the drying stage is carried out after rinsing the plastic material to eliminate the moisture contained as much as possible. Drying will be done mechanically.
- This stage is carried out in the deodorization module, where the odor produced by the VOCs adhering to the already clean and dry material is eliminated. This process can be done before or after extrusion:
- the material that is introduced in the recycling process is the volatile fraction of plastic waste from bags and films, then it would be better to carry out the deodorization stage after extrusion for mechanical reasons.
- the deodorization process can be applied before or after extrusion, since said material has high density in both cases and does not volatilize giving rise to loss of material as would occur in the case of films.
- the deodorization module is independent of the recycling process.
- the deodorization system acts as a totally independent module from the recycling process and its input into the process is the recycled pellets, that is, it is a system for improving the quality of the product already recycled by other companies. .
- Fig.1 is a schematic diagram of the different elements of the procedure to carry out odor removal in recycled plastic materials.
- the procedure for the elimination of odors in recycled plastic materials comprises the following stages:
- the plastic material is introduced through the upper part (61) of a distillation column (6);
- the plastic material falls by gravity along the distillation column (6), the plastic material comes into contact with the steam (V) and the organic components are removed from the plastic material by dragging;
- the system for the elimination of odors in recycled plastic materials comprises the following equipment:
- a crusher (2) of the blade type or cryogenic mill reducing the plastic material
- a rinse tank (4) for rinsing the washed material
- a deodorization module comprising:
- a distillation column (6) through which the dry material enters, where the organic components of the plastic material are extracted by steam drag (V), and through which the VOCs and odors free plastic (PL) leaves;
- a droplet separator (7) that receives the organic product (PO) extracted by steam entrainment
- an isothermal tank (8) that receives a liquid fraction (FL) obtained from the droplet separator (7);
- a separator (10) that receives a part of organic product (RO ' ) from the isothermal tank (8); Y
- a steam boiler (9) feeding steam (V) to the distillation column (6); and that receives a vapor fraction (FV) from the droplet separator (7) and an aqueous phase (FA) from the isothermal tank (8).
- Stage 1 Separation of recycled plastic
- the fraction of plastic material from the landfill or from the domestic recycled plastic container (P-VOCs), where the plastic with VOCs is selected from polyethylene - PE; polypropylene - PP; and polyester - PET, is introduced into a separation system or identification plant (1), where the material is identified by means of near infrared electroscopy - NIR; mid-infrared electroscopy - MIR; infrared infrared thermography; laser-induced plasma spectroscopy - LIBS; or X-ray fluorescence.
- Grinder (2) which can be a blade-type grinder if it is desired to process the plastic in flake form; or it can be of the cryogenic mill type if you want to work or reduce to a particle size of less than 1 mm.
- the stream of chopped plastic enters the wash tank (3), where a surfactant wash is carried out to remove dirt from the plastic material adhering to the surface. Both anionic and cationic or neutral surfactants can be used. Washing is carried out in a stirred tank type reactor.
- the plastic material is rinsed to remove dirt and chemicals used.
- the product that comes out of the chemical wash enters a rinse tank (4) to remove the chemicals used in the chemical wash and the remaining dirt, where said rinse product is water.
- Stage 6 Deodorization
- MD deodorization module
- PL odor-free plastic
- VOCs exit the bottom (62) of the column.
- These plastic particles fall by gravity and are subjected to contact with steam. It is not an object of the present invention, but inside the column there may be plates or other devices that prevent direct fall and that make the particles fall more slowly and, therefore, prolonging the time of exposure to the steam.
- the steam (V) enters through the lower lateral part (64) of the column and exits through the upper lateral part (63) of the same.
- This steam (V) that enters through the lower side part (64) is fed by a steam boiler (9) adjacent to the column (6).
- the steam stream that comes out of the upper part contains a mixture of water vapor and organic compounds, that is, it is a mixture of organic product (PO).
- this mixture is introduced into a droplet separator (7). After the droplet separator (7), the vapor fraction (FV) comes out on the one hand and the liquid fraction (FL) on the other.
- the steam fraction (FV) is composed of water and is recirculated to the steam boiler (9).
- the liquid fraction (FL) is a condensed product that is composed of the organic phase together with the water dissolved in it.
- This condensed product is channeled to an isothermal tank (8) in which the organic phase (FO) is separated from the aqueous phase (FA) by decantation, without the need for filters.
- the aqueous phase stream (FA) is made up of condensed water that is fed back into the steam boiler (9), optimizing the performance of the system.
- the organic phase stream (FO) contains organic compounds and water in solution. This stream is channeled to a separator (10) that separates the water (FO-2) from the rest of the organic compounds (FO-1)
- An organic product (PO) has just been generated that is also reusable, where there is water (FO-2) that can be used externally for other uses, and can also be reused to be recirculated to the boiler (9) as well; and where there are organic remains (FO-1) composed essentially of essential oils that can be marketed, or that can even be reused as fuel for steam generation.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Sustainable Development (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112021024355A BR112021024355A2 (pt) | 2019-06-04 | 2019-12-04 | Método para a eliminação de odores em materiais plásticos reciclados e sistema para a eliminação de odores em materiais plásticos reciclados com o qual é executado o método |
EP19932164.7A EP3981486A4 (en) | 2019-06-04 | 2019-12-04 | METHOD AND SYSTEM TO ELIMINATE ODOR IN RECYCLED PLASTICS |
US17/596,049 US20220298323A1 (en) | 2019-06-04 | 2019-12-04 | Method and system for the elimination of odours in recycled plastics |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP201930501 | 2019-06-04 | ||
ES201930501A ES2798049B2 (es) | 2019-06-04 | 2019-06-04 | Procedimiento y sistema para la eliminacion de olores en plasticos reciclados |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020245476A1 true WO2020245476A1 (es) | 2020-12-10 |
Family
ID=73643861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2019/070824 WO2020245476A1 (es) | 2019-06-04 | 2019-12-04 | Procedimiento y sistema para la eliminación de olores en plásticos reciclados |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220298323A1 (es) |
EP (1) | EP3981486A4 (es) |
BR (1) | BR112021024355A2 (es) |
ES (1) | ES2798049B2 (es) |
WO (1) | WO2020245476A1 (es) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023087567A1 (zh) * | 2021-11-17 | 2023-05-25 | 天华化工机械及自动化研究设计院有限公司 | 蒸汽法脱除聚丙烯中voc及降低气味等级的装置和方法 |
EP4249199A1 (en) * | 2022-03-23 | 2023-09-27 | QCP Holding B.V. | Process for degassing recycled polyolefins |
LU502091B1 (en) | 2022-05-13 | 2023-11-13 | saperatec GmbH | Method and apparatus for removing low molecular impurities from an impure extrudable material |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114632797A (zh) * | 2022-03-16 | 2022-06-17 | 金锋馥(滁州)科技股份有限公司 | 一种综合有机废弃物亚临界水解处理方法 |
DE102022204421A1 (de) * | 2022-05-04 | 2023-11-09 | Coperion Gmbh | Vorrichtung und Verfahren zum Ermitteln von Betriebsparametern für das Entgasen und/oder Desodorieren von Kunststoffpartikeln |
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- 2019-12-04 US US17/596,049 patent/US20220298323A1/en active Pending
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WO2023087567A1 (zh) * | 2021-11-17 | 2023-05-25 | 天华化工机械及自动化研究设计院有限公司 | 蒸汽法脱除聚丙烯中voc及降低气味等级的装置和方法 |
EP4249199A1 (en) * | 2022-03-23 | 2023-09-27 | QCP Holding B.V. | Process for degassing recycled polyolefins |
LU502091B1 (en) | 2022-05-13 | 2023-11-13 | saperatec GmbH | Method and apparatus for removing low molecular impurities from an impure extrudable material |
WO2023218070A1 (en) | 2022-05-13 | 2023-11-16 | saperatec GmbH | Method and apparatus for removing impurities from an impure extrudable material |
Also Published As
Publication number | Publication date |
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US20220298323A1 (en) | 2022-09-22 |
BR112021024355A2 (pt) | 2022-01-11 |
ES2798049B2 (es) | 2021-03-25 |
EP3981486A4 (en) | 2023-06-21 |
EP3981486A1 (en) | 2022-04-13 |
ES2798049A1 (es) | 2020-12-04 |
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