BE1008556A3 - Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials - Google Patents
Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials Download PDFInfo
- Publication number
- BE1008556A3 BE1008556A3 BE9301181A BE9301181A BE1008556A3 BE 1008556 A3 BE1008556 A3 BE 1008556A3 BE 9301181 A BE9301181 A BE 9301181A BE 9301181 A BE9301181 A BE 9301181A BE 1008556 A3 BE1008556 A3 BE 1008556A3
- Authority
- BE
- Belgium
- Prior art keywords
- chamber
- gas
- treatment gas
- hot
- treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000004806 packaging method and process Methods 0.000 title claims description 16
- 239000002131 composite material Substances 0.000 title claims description 11
- 239000007789 gas Substances 0.000 claims description 35
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 1
- 239000012044 organic layer Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract 2
- 239000005022 packaging material Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 239000000126 substance Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000021267 infertility disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010816 packaging waste Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
- F23G5/004—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates with endless travelling grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/00001—Exhaust gas recirculation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/07002—Injecting inert gas, other than steam or evaporated water, into the combustion chambers
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Packaging materials shredded into pieces are introduced into the elongatedchamber to form a layer which is displaced in the chamber at a predeterminedrate to be subjected to hot gas flux treatment over a predetermined period oftime, said hot treatment gas being at a temperature of between approximately450 degrees C and 600 degrees C. The hot treatment gas is injected at a numberof points distributed over the length of the treatment chamber.Packaging materials shredded into pieces are introduced into the elongatedchamber to form a layer which is displaced in the chamber at a predeterminedrate to be subjected to hot gas flux treatment over a predetermined period oftime, said hot treatment gas being at a temperature of between approximately450 degrees C and 600 degrees C. The hot treatment gas is injected at anumber of points distributed over the length of the treatment chamber.
Description
<Desc/Clms Page number 1>
PROCEDE DE TRAITEMENT D'EMBALLAGES
EN MATERIAU COMPOSITE La présente invention concerne la valorisation de déchets d'emballages perdus et en particulier un procédé de traitement d'emballages constitués d'un matériau mixte composé d'une substance métallique et d'au moins une substance organique en vue d'en récupérer le métal et de valoriser le potentiel énergétique de la ou des substances organiques.
Une application particulière du procédé suivant l'invention est le traitement des emballages servant au conditionnement de liquides alimentaires, et constitués d'un matériau composite composé d'une couche d'aluminium, d'une couche de carton et d'une couche de poly- éthylène, par exemple.
L'aluminium de ces emballages, et d'une façon plus générale le métal contenu dans des matériaux composites analogues, ont une valeur commerciale appréciable et leur récupération présente donc un grand intérêt économique doublé d'un intérêt écologique.
Bien sûr, la récupération du métal de matériaux composites tels que ceux qui ont été évoqués plus haut ne peut être intéressante que si le procédé de traitement est rentable et si le métal récupéré est d'une qualité satisfaisante pour pouvoir être directement réutilisé.
L'invention apporte une solution à ce problème en pro-
<Desc/Clms Page number 2>
posant un procédé de traitement d'emballages en matériau composite qui permet de récupérer le métal du matériau composite.
Un autre but de l'invention est de récupérer et valoriser également le potentiel énergétique de la ou des substances organiques du matériau composite.
Ces buts sont atteints suivant l'invention grâce à un procédé de traitement tel que défini dans les revendications.
Plus particulièrement, les emballages, déchiquetés en morceaux, sont introduits dans une chambre allongée de manière à y former une nappe et la nappe précitée est déplacée dans la chambre à une vitesse prédéterminée de manière à être soumise à l'action d'un flux de gaz de traitement chaud pendant un laps de temps prédéterminé, ledit gaz de traitement chaud étant à une température comprise dans la gamme allant de 4500C à 6000C environ.
Le gaz de traitement chaud est de préférence injecté dans la chambre en plusieurs points répartis sur la longueur de la chambre de traitement.
L'invention permet de récupérer le métal intégralement sans altération aucune et libre de toute autre substance, le métal récupéré se présentant avec l'aspect, la composition chimique et la structure physique de la feuille métallique de l'emballage traité.
De plus, le procédé proposé permet de récupérer le potentiel énergétique des substances organiques sous forme de gaz combustible recyclable.
L'invention est exposée plus en détails dans ce qui
<Desc/Clms Page number 3>
suit à l'aide du dessin joint qui représente schématiquement un exemple d'installation pour la mise en oeuvre du procédé suivant l'invention.
Conformément à l'invention, les emballages à traiter sont préalablement déchiquetés pour en former de menus morceaux de 1 cm x 1 cm par exemple. Les morceaux sont introduits dans une enceinte allongée dans laquelle ils sont maintenus dans une atmosphère gazeuse à composition et température contrôlées pendant un laps de temps prédéterminé.
Se reportant à la figure annexée le nombre de référence 11 désigne une déchiqueteuse (connue en soi) et le nombre de référence 10 désigne une enceinte allongée ayant une trémie d'entrée 12 pour l'introduction des morceaux d'emballages à traiter. ceux-ci sont reçus sur un tapis transporteur 13 qui s'étend sur la longueur de l'enceinte jusqu'à une trémie de sortie 15. Le tapis transporteur est entraîné à une vitesse de déplacement prédéterminée afin d'assurer un temps de traitement suffisant de la nappe de morceaux d'emballages 100 qu'il véhicule.
Le tapis transporteur 13 est percé d'orifices pour le passage d'un flux de gaz de traitement chaud à composition contrôlée injecté dans des compartiments 14 ménagés en dessous du tapis transporteur. Le gaz de traitement est par exemple constitué d'un gaz neutre tel que l'azote N2 ou de fumées de combustion, légèrement oxygéné. L'injection de gaz de traitement se fait de préférence en plusieurs points 16 répartis sur la longueur de la chambre 10. Sur le dessin on voit que les points d'injection de gaz 16 sont répartis dans plusieurs compartiments 14 sous le tapis transporteur.
<Desc/Clms Page number 4>
L'objectif du traitement dans la chambre 10 est d'assurer une pyrolyse convenable des morceaux 100 tout en contrôlant efficacement une combustion lente des produits organiques subsistant sur le métal des morceaux.
Ce phénomène de combustion lente sera appelé dans la suite consomption. Pour atteindre ce résultat les recherches effectuées par la demanderesse ont montré que la température du gaz de traitement introduit dans la chambre 10 doit être comprise dans la gamme allant de 4500C à 6000C environ avec une légère oxygénation de 1 à 10 % environ suivant l'évolution de l'état de traitement des morceaux sur le tapis 13. La proportion d'oxygène dans le gaz injecté peut varier en fonction du point d'injection dans la chambre.
La maîtrise de la température et de l'oxygénation du gaz de traitement garantit le contrôle de la réaction exothermique de consomption des matières organiques de manière à éviter la fusion ou l'oxydation du métal et par conséquent la mauvaise qualité du métal récupéré.
Afin d'assurer un traitement satisfaisant de la nappe de morceaux d'emballages 100, il a été constaté que la vitesse du gaz de traitement traversant la nappe 100 sera de préférence comprise entre 0, 1 et 0,3 m/s.
Au terme du temps de séjour dans la chambre 10 les paillettes de métal récupérées sont recueillies dans la trémie de sortie 15.
Le gaz de traitement ayant traversé la nappe de morceaux d'emballages 15 est aspiré vers un filtre 17 qui en sépare les stériles. Celles-ci sont recueillies en 18. Le gaz filtré est évacué en 19.
<Desc/Clms Page number 5>
Le procédé de traitement suivant l'invention est conditionné par plusieurs facteurs.
Un premier facteur important est la température de traitement. D'une part, il faut que la température soit suffisante pour assurer la combustion des substances organiques sans que des stériles issus de cette combustion ne restent adhérer sur le métal. D'autre part, dès les premiers instants du traitement, il faut que la température ne soit pas trop élevée afin d'éviter une combustion trop rapide des substances organiques. En effet, celles-ci contiennent à ce moment la totalité de leurs matières volatiles, très réactives, entraînant de ce fait la création de points chauds et par conséquent une altération du métal.
La présence d'oxygène dans le gaz de traitement chaud est un autre facteur important car de cette présence dépend le démarrage et l'avancement contrôlés d'un front de consomption de post-pyrolyse.
Un autre facteur du procédé est le débit du flux de gaz de traitement. Ce débit est lié à l'épaisseur et à la densité de la nappe de morceaux d'emballages traités et non traités. Avec une densité de nappe de l'ordre de 30 à 200 kg/m3, une vitesse réelle de gaz de l'ordre de 0,1 à 0,3 m/s s'est avéré donner des résultats excellents.
Il va de soi que le débit du flux de gaz de traitement va de pair avec la vitesse de déplacement de la nappe de matériau traité, ce qui en somme détermine le temps de séjour dans la chambre de traitement. Un temps de traitement d'un quart d'heure à une demi-heure dans les conditions opératoires citées plus haut s'est avéré
<Desc/Clms Page number 6>
suffisant pour donner des paillettes de métal récupérées dont l'aspect et la qualité sont les mêmes que ceux des feuilles de métal utilisées dans les emballages.
L'invention prévoit de récupérer également l'énergie thermique résultant de la pyro-consomption des matières organiques des morceaux d'emballages traités. Dans ce but, comme mentionné plus haut, l'invention propose de recycler le gaz de traitement filtré évacué en 19 et de l'utiliser comme gaz combustible.
A cet effet, le gaz récupéré est amené dans une chaudière 20, par exemple une chaudière à haute température, forte turbulence et grand temps de séjour (TTT), connue en soi. Cette chaudière est représentée schématiquement sur la figure. En 21 est repérée l'entrée du gaz combustible recyclé, en 22 est repérée d'admission de combustible d'un brûleur et en 23 est repérée l'admission d'air secondaire. Les fumées de combustion sont évacués en 24 vers la chambre 10. Afin d'assurer la température requise des fumées de combustion à l'entrée de la chambre de traitement 10, un échangeur thermique 25 effectue l'ajustement de température requis. Le nombre de référence 26 désigne un serpentin de réchauffage d'air destiné à l'oxygénation du gaz de traitement à introduire dans la chambre 10.
Le serpentin 27 sert à une récupération d'énergie pour une utilisation extérieure. Les fumées sont évacuées en 28.
<Desc / Clms Page number 1>
PACKAGING PROCESSING PROCESS
COMPOSITE MATERIAL The present invention relates to the recovery of lost packaging waste and in particular a method of treating packaging made of a mixed material composed of a metallic substance and at least one organic substance with a view to recover the metal and develop the energy potential of the organic substance (s).
A particular application of the process according to the invention is the treatment of packaging used for packaging food liquids, and made of a composite material composed of a layer of aluminum, a layer of cardboard and a layer of poly - ethylene, for example.
The aluminum in these packages, and more generally the metal contained in similar composite materials, have appreciable commercial value and their recovery therefore presents a great economic interest coupled with an ecological interest.
Of course, the recovery of the metal from composite materials such as those which have been mentioned above can only be advantageous if the treatment process is profitable and if the recovered metal is of satisfactory quality so that it can be directly reused.
The invention provides a solution to this problem by
<Desc / Clms Page number 2>
setting a process for treating packaging made of composite material which makes it possible to recover the metal from the composite material.
Another object of the invention is to recover and also enhance the energy potential of the organic substance or substances of the composite material.
These objects are achieved according to the invention by means of a treatment method as defined in the claims.
More particularly, the packages, shredded into pieces, are introduced into an elongated chamber so as to form a ply therein and the aforementioned ply is moved in the chamber at a predetermined speed so as to be subjected to the action of a flow of hot process gas for a predetermined period of time, said hot process gas being at a temperature in the range from about 4500C to 6000C.
The hot treatment gas is preferably injected into the chamber at several points distributed along the length of the treatment chamber.
The invention makes it possible to recover the metal in full without any alteration and free of any other substance, the recovered metal having the appearance, chemical composition and physical structure of the metal sheet of the treated packaging.
In addition, the proposed process makes it possible to recover the energy potential of organic substances in the form of recyclable combustible gas.
The invention is set out in more detail in what
<Desc / Clms Page number 3>
follows using the attached drawing which schematically represents an example of installation for implementing the method according to the invention.
In accordance with the invention, the packages to be treated are shredded beforehand to form small pieces of 1 cm x 1 cm for example. The pieces are introduced into an elongated enclosure in which they are kept in a gaseous atmosphere with controlled composition and temperature for a predetermined period of time.
Referring to the appended figure, the reference number 11 designates a shredder (known per se) and the reference number 10 designates an elongated enclosure having an inlet hopper 12 for the introduction of the pieces of packaging to be treated. these are received on a conveyor belt 13 which extends over the length of the enclosure to an outlet hopper 15. The conveyor belt is driven at a predetermined speed of movement in order to ensure sufficient treatment time of the sheet of pieces of packaging 100 that it conveys.
The conveyor belt 13 is pierced with orifices for the passage of a flow of hot treatment gas with controlled composition injected into compartments 14 formed below the conveyor belt. The treatment gas for example consists of a neutral gas such as nitrogen N2 or combustion fumes, slightly oxygenated. The injection of treatment gas is preferably carried out at several points 16 distributed over the length of the chamber 10. In the drawing we see that the gas injection points 16 are distributed in several compartments 14 under the conveyor belt.
<Desc / Clms Page number 4>
The objective of the treatment in the chamber 10 is to ensure suitable pyrolysis of the pieces 100 while effectively controlling a slow combustion of the organic products remaining on the metal of the pieces.
This slow combustion phenomenon will be called consumption below. To achieve this result, the research carried out by the applicant has shown that the temperature of the treatment gas introduced into the chamber 10 must be in the range from approximately 4500C to 6000C with a slight oxygenation of 1 to 10% approximately depending on the evolution the state of treatment of the pieces on the mat 13. The proportion of oxygen in the injected gas can vary depending on the injection point in the chamber.
Controlling the temperature and the oxygenation of the treatment gas guarantees control of the exothermic reaction of consumption of organic matter so as to avoid the melting or oxidation of the metal and consequently the poor quality of the metal recovered.
In order to ensure satisfactory treatment of the ply of pieces of packaging 100, it has been observed that the speed of the treatment gas passing through the ply 100 will preferably be between 0.1 and 0.3 m / s.
At the end of the residence time in chamber 10, the metal flakes recovered are collected in the outlet hopper 15.
The treatment gas having passed through the sheet of pieces of packaging 15 is sucked into a filter 17 which separates the steriles therefrom. These are collected in 18. The filtered gas is removed in 19.
<Desc / Clms Page number 5>
The treatment method according to the invention is conditioned by several factors.
A first important factor is the processing temperature. On the one hand, the temperature must be sufficient to ensure the combustion of organic substances without the waste rock from this combustion remaining adhered to the metal. On the other hand, from the first moments of the treatment, the temperature must not be too high in order to avoid too rapid combustion of the organic substances. Indeed, these contain at the moment all of their volatile materials, which are very reactive, thereby causing the creation of hot spots and consequently alteration of the metal.
The presence of oxygen in the hot process gas is another important factor since on this presence depends the controlled start and advancement of a post-pyrolysis consumption front.
Another factor in the process is the flow rate of the process gas flow. This flow rate is linked to the thickness and density of the ply of pieces of treated and untreated packaging. With a sheet density of the order of 30 to 200 kg / m3, an actual gas velocity of the order of 0.1 to 0.3 m / s has been found to give excellent results.
It goes without saying that the flow rate of the treatment gas flow goes hand in hand with the speed of movement of the sheet of treated material, which in short determines the residence time in the treatment chamber. A treatment time of a quarter of an hour to half an hour under the operating conditions mentioned above has been found to be
<Desc / Clms Page number 6>
sufficient to give recovered metal flakes whose appearance and quality are the same as those of the metal sheets used in packaging.
The invention also provides for recovering thermal energy resulting from the pyrolysis of organic matter from the pieces of treated packaging. For this purpose, as mentioned above, the invention proposes to recycle the filtered treatment gas discharged in 19 and to use it as combustible gas.
For this purpose, the recovered gas is brought into a boiler 20, for example a high temperature, high turbulence and long residence time (TTT) boiler, known per se. This boiler is shown schematically in the figure. In 21 is marked the inlet of the recycled combustible gas, in 22 is marked the fuel intake of a burner and in 23 is marked the secondary air intake. The combustion fumes are evacuated at 24 to the chamber 10. In order to ensure the required temperature of the combustion fumes at the inlet of the treatment chamber 10, a heat exchanger 25 performs the required temperature adjustment. The reference number 26 designates an air heating coil intended for the oxygenation of the treatment gas to be introduced into the chamber 10.
The coil 27 is used for energy recovery for outdoor use. The fumes are evacuated at 28.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9301181A BE1008556A3 (en) | 1993-10-29 | 1993-10-29 | Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9301181A BE1008556A3 (en) | 1993-10-29 | 1993-10-29 | Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE1008556A3 true BE1008556A3 (en) | 1996-06-04 |
Family
ID=3887503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE9301181A BE1008556A3 (en) | 1993-10-29 | 1993-10-29 | Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE1008556A3 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1860380A1 (en) * | 2006-05-24 | 2007-11-28 | Asst | Device for pyrolyse |
| CN110883050A (en) * | 2019-11-13 | 2020-03-17 | 蚌埠学院 | Rapid recycling and cleaning treatment method and system for high-water-content household garbage |
| GB2585870A (en) * | 2019-07-18 | 2021-01-27 | Powerhouse Energy Group Plc | Treatment of waste material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2752609A1 (en) * | 1976-12-03 | 1978-06-08 | Mansfield Carbon Products Inc | METHOD AND DEVICE FOR PRODUCING HEATING GAS |
| US4308034A (en) * | 1980-05-19 | 1981-12-29 | Hoang Dinh C | Apparatus for incinerating and gasifying biomass material |
| US4765256A (en) * | 1987-11-18 | 1988-08-23 | New Hampshire Flakeboard, Inc. | Reinjection gasifier |
| DE3710744A1 (en) * | 1987-03-31 | 1988-10-13 | Atzger Juergen | Process and apparatus for the thermal separation of composite materials |
| EP0373673A2 (en) * | 1988-12-16 | 1990-06-20 | GILLESPIE & POWERS, INC. | Apparatus and process for removing volatile coatings from scrap metal |
-
1993
- 1993-10-29 BE BE9301181A patent/BE1008556A3/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2752609A1 (en) * | 1976-12-03 | 1978-06-08 | Mansfield Carbon Products Inc | METHOD AND DEVICE FOR PRODUCING HEATING GAS |
| US4308034A (en) * | 1980-05-19 | 1981-12-29 | Hoang Dinh C | Apparatus for incinerating and gasifying biomass material |
| DE3710744A1 (en) * | 1987-03-31 | 1988-10-13 | Atzger Juergen | Process and apparatus for the thermal separation of composite materials |
| US4765256A (en) * | 1987-11-18 | 1988-08-23 | New Hampshire Flakeboard, Inc. | Reinjection gasifier |
| EP0373673A2 (en) * | 1988-12-16 | 1990-06-20 | GILLESPIE & POWERS, INC. | Apparatus and process for removing volatile coatings from scrap metal |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1860380A1 (en) * | 2006-05-24 | 2007-11-28 | Asst | Device for pyrolyse |
| WO2007135189A1 (en) * | 2006-05-24 | 2007-11-29 | Asst | Device for pyrolyse |
| GB2585870A (en) * | 2019-07-18 | 2021-01-27 | Powerhouse Energy Group Plc | Treatment of waste material |
| GB2585870B (en) * | 2019-07-18 | 2024-06-19 | Powerhouse Energy Group Plc | Treatment of waste material |
| CN110883050A (en) * | 2019-11-13 | 2020-03-17 | 蚌埠学院 | Rapid recycling and cleaning treatment method and system for high-water-content household garbage |
| CN110883050B (en) * | 2019-11-13 | 2023-08-25 | 蚌埠学院 | High-water-content household garbage rapid recycling cleaning treatment method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0425396B1 (en) | Method and device for treating waste in order to recover organic material | |
| US5319176A (en) | Plasma arc decomposition of hazardous wastes into vitrified solids and non-hazardous gasses | |
| US20070113705A1 (en) | Process and apparatus for use in recycling composite materials | |
| EP0410889B1 (en) | Process and apparatus for treating glass waste or mineral fibres for recovery | |
| BE1008556A3 (en) | Method for treating packaging made of composite maMethod for treating packaging made of composite materials terials | |
| US4654088A (en) | Decoating of aluminum scrap | |
| FR2498957A1 (en) | METHOD AND APPARATUS FOR REGENERATING USEFUL SAND SAND | |
| CA2195742C (en) | Method for recycling conditioned wood and installation for implementing the method | |
| US5824193A (en) | Method of thermally treating plastics material | |
| ES2130040A2 (en) | Process for the recovery of aluminium and energy from used packages of the "tetrabrick" type and oven for implementing such process | |
| US4204906A (en) | Method of separating fusible plastics from solid waste | |
| US5331106A (en) | Resource recovery system | |
| FR2701035A1 (en) | Method and installation for the thermolysis treatment of solid waste, without condensation of hydrocarbons. | |
| FR2668726A1 (en) | Method for destroying asbestos fibres by melting, and implementation device | |
| JPS6137934A (en) | Regenerating method of al from waste al can | |
| WO1998053251A1 (en) | A method and apparatus for recovering energy of waste classification incineration | |
| EP0005703B1 (en) | Process for the preparation of fuel and nutritive substances from wastes | |
| US3902435A (en) | Method of incinerating pre-treated industrial wastes | |
| RU2201951C1 (en) | Method of processing organic substances | |
| CA1246323A (en) | Method and system for purifying gaseous streams | |
| FR2795161A1 (en) | Generator of heat and thermal energy, comprises combustion chamber into which particles of waste products are injected with hot combustion supporting gas | |
| FR2775213A1 (en) | Recycling of creosote-contaminated wood to form wood granules for use used in cements | |
| FR2697528A1 (en) | Cracking polyethylene waste into wax or hydrocarbon(s) - by radiant heating of waste held in retaining grid from refractory wall, heated by burning gas from process | |
| JPH04270793A (en) | Production of liquid fuel or the like from waste plastics | |
| CH678335A5 (en) | Pyrolytic decomposition of scrap tyres, plastics etc. - by coating pieces of material with adherent powder contg. oxide(s) of zinc or titanium and carbon black, then irradiating with EM waves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: *INSTITUT SCIENTIFIQUE DE SERVICE PUBLIC Effective date: 20131029 |