IT202000032600A1 - Method and plant for the disposal of waste consisting of plastic materials or biomass, and of all organic materials that contain carbon in their molecules - Google Patents
Method and plant for the disposal of waste consisting of plastic materials or biomass, and of all organic materials that contain carbon in their molecules Download PDFInfo
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- IT202000032600A1 IT202000032600A1 IT102020000032600A IT202000032600A IT202000032600A1 IT 202000032600 A1 IT202000032600 A1 IT 202000032600A1 IT 102020000032600 A IT102020000032600 A IT 102020000032600A IT 202000032600 A IT202000032600 A IT 202000032600A IT 202000032600 A1 IT202000032600 A1 IT 202000032600A1
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- pyrolysis
- syngas
- section
- cylinder
- waste
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 27
- 239000002699 waste material Substances 0.000 title claims description 26
- 239000000463 material Substances 0.000 title claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 16
- 239000004033 plastic Substances 0.000 title claims description 10
- 229920003023 plastic Polymers 0.000 title claims description 10
- 239000002028 Biomass Substances 0.000 title claims description 9
- 229910052799 carbon Inorganic materials 0.000 title claims description 8
- 239000011368 organic material Substances 0.000 title claims description 6
- 238000000197 pyrolysis Methods 0.000 claims description 80
- 238000004508 fractional distillation Methods 0.000 claims description 21
- 239000002956 ash Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 19
- 239000002910 solid waste Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 15
- 239000010808 liquid waste Substances 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 15
- 238000009835 boiling Methods 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 229930195733 hydrocarbon Natural products 0.000 claims description 11
- 150000002430 hydrocarbons Chemical class 0.000 claims description 11
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000003786 synthesis reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000005684 electric field Effects 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 238000004821 distillation Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 5
- 239000008158 vegetable oil Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000003925 fat Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000003071 parasitic effect Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 241000039077 Copula Species 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 239000012265 solid product Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 235000014593 oils and fats Nutrition 0.000 claims 2
- 230000001914 calming effect Effects 0.000 claims 1
- 238000009422 external insulation Methods 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
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- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B19/00—Heating of coke ovens by electrical means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B7/00—Coke ovens with mechanical conveying means for the raw material inside the oven
- C10B7/10—Coke ovens with mechanical conveying means for the raw material inside the oven with conveyor-screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/005—Rotary drum or kiln gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/158—Screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1269—Heating the gasifier by radiating device, e.g. radiant tubes
- C10J2300/1276—Heating the gasifier by radiating device, e.g. radiant tubes by electricity, e.g. resistor heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
- C10J2300/1628—Ash post-treatment
- C10J2300/1631—Ash recycling
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1656—Conversion of synthesis gas to chemicals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Processing Of Solid Wastes (AREA)
- Coke Industry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Description
Descrizione dell?Invenzione Industriale avente per titolo: Description of the Industrial Invention entitled:
Metodo e impianto per lo smaltimento di rifiuti costituiti da materiali plastici o biomasse, e di tutti i materiali organici che contengono carbonio nelle loro molecole Method and plant for the disposal of waste consisting of plastic materials or biomass, and of all organic materials that contain carbon in their molecules
La presente invenzione concerne un metodo ed un impianto per lo smaltimento di rifiuti solidi, costituti da materiali plastici o biomasse, e liquidi, costituiti particolarmente da olii vegetali e grassi esausti, nonch? di tutti i materiali organici che contengono carbonio nelle loro molecole. The present invention relates to a method and plant for the disposal of solid waste, consisting of plastic materials or biomass, and liquids, particularly consisting of vegetable oils and waste fats, as well as waste of all organic materials that contain carbon in their molecules.
Lo smaltimento dei rifiuti costituisce un grave problema, in quanto ? sempre pi? difficile reperire aree da destinare a discarica e l?incenerimento ha un costo elevato e, se non eseguito correttamente, pu? dare luogo ad inquinamento ambientale. Waste disposal is a serious problem, as ? more and more difficult to find areas to be used for landfill and? incineration has a high cost and, if not done correctly, can? give rise to environmental pollution.
Si sono affermati impianti di trattamento, noti come termovalorizzatori, che utilizzano i materiali plastici come combustibile per produrre calore ed anche impianti di trattamento delle biomasse che, attraverso la fermentazione, producono del gas combustibile. Treatment plants have established themselves, known as waste-to-energy plants, which use plastic materials as fuel to produce heat and also biomass treatment plants which, through fermentation, produce fuel gas.
In una sua prima forma di realizzazione preferita, la presente invenzione propone una nuova procedura di smaltimento di materiali plastici, di biomasse e di olii vegetali e grassi esausti, che permette di ricavare del gas combustibile, attraverso un trattamento di pirolisi. In a first preferred embodiment thereof, the present invention proposes a new procedure for the disposal of plastic materials, biomass and waste vegetable oils and fats, which allows fuel gas to be obtained, through a pyrolysis treatment.
La presente invenzione propone dunque un metodo ed impianti per l?attuazione di detto metodo come rivendicati nelle rispettive rivendicazioni indipendenti. The present invention therefore proposes a method and systems for implementing said method as claimed in the respective independent claims.
Il metodo consiste essenzialmente nel sottoporre i rifiuti solidi e liquidi da smaltire ad un trattamento di pirolisi che permetta di estrarre del gas combustibile di sintesi (syngas), ottenendo un residuo inerte che non d? problemi per lo smaltimento in discarica. The method essentially consists in subjecting the solid and liquid waste to be disposed of to a pyrolysis treatment which allows the extraction of synthesis fuel gas (syngas), obtaining an inert residue which does not give landfill disposal problems.
In questa forma di realizzazione, l?impianto comprende sostanzialmente: In this embodiment, the plant substantially comprises:
? una prima sezione in cui avviene la pirolisi dei materiali di rifiuto e si producono gas di sintesi (syngas) e ceneri residue; ? a first section in which the pyrolysis of the waste materials takes place and synthesis gas (syngas) and residual ash are produced;
? una seconda sezione in cui la frazione pi? leggera di dette ceneri, ovvero il polverino di carbone o nerofumo che viene trasportato dal syngas, viene separato da detto syngas; ? a second section in which the fraction pi? light of said ashes, i.e. the coal or carbon black powder which is transported by the syngas, is separated from said syngas;
? una terza sezione in cui avviene la distillazione frazionata dei prodotti della pirolisi, ottenendo degli idrocarburi altobollenti, cio? un residuo bituminoso (tar); ? a third section in which the fractional distillation of the pyrolysis products takes place, obtaining high-boiling hydrocarbons, i.e. a bituminous residue (tar);
? una quarta sezione in cui si effettua il riciclo del residuo bituminoso di detta distillazione frazionata, per un ulteriore trattamento, detto residuo bituminoso potendo essere mescolato con detti rifiuti liquidi; ed ? a fourth section in which the bituminous residue of said fractional distillation is recycled, for a further treatment, said bituminous residue being able to be mixed with said liquid waste; and
? una quinta sezione finale di emergenza, che comprender?, oltre alle pompe di sicurezza che interverranno automaticamente in caso di guasto del sistema, tutti gli impianti di sicurezza. ? a fifth final emergency section, which will include, in addition to the safety pumps which will intervene automatically in the event of a system failure, all the safety systems.
La camera di pirolisi ? costituita sostanzialmente da un tubo in acciaio speciale riscaldato e provvisto di sistema meccanizzato per il movimento e per l?avanzamento controllato della massa solida da sottoporre al trattamento di pirolisi. Il tubo ? esternamente coibentato con tessuto ceramico e, per mezzo di un gruppo moto-riduttore, viene fatto girare lentamente intorno al proprio asse. The pyrolysis chamber? substantially constituted by a special steel tube heated and equipped with a mechanized system for the movement and for the controlled advancement of the solid mass to be subjected to the pyrolysis treatment. The pipe ? externally insulated with ceramic fabric and, by means of a motor-reducer group, it is slowly turned around its own axis.
Una caratteristica dell?impianto consiste nel fatto che ? energeticamente autosufficiente, in quanto utilizza parte del gas combustibile prodotto per alimentare un motore endotermico che aziona un alternatore che fornisce l?energia elettrica utilizzata per riscaldare la camera di pirolisi e per azionare tutti i dispositivi necessari al funzionamento dell?impianto. A characteristic of the plant consists in the fact that ? energetically self-sufficient, as it uses part of the combustible gas produced to feed an endothermic engine which drives an alternator which supplies the electricity used to heat the pyrolysis chamber and to operate all the devices necessary for the operation of the plant.
L?impiego del metodo e dell?impianto secondo l?invenzione permette in definitiva di trasformare i rifiuti solidi e liquidi in un gas combustibile e in residui inerti. Parte del gas combustibile viene utilizzato per produrre l?energia necessaria al funzionamento di tutto l?impianto, mentre la frazione residua inerte, di volume assai inferiore a quello della massa iniziale dei rifiuti, pu? essere smaltito in discarica senza particolari problemi, sia per la ridotta quantit? di dette ceneri, sia perch? le stesse non sono inquinanti. The use of the method and of the plant according to the invention finally allows to transform the solid and liquid waste into a combustible gas and into inert residues. Part of the combustible gas is used to produce the energy necessary for the functioning of the entire plant, while the residual inert fraction, with a much smaller volume than that of the initial mass of waste, can be disposed of in landfills without particular problems, both for the reduced quantity? of these ashes, both because? they are not polluting.
In una seconda forma di realizzazione preferita, la presente invenzione si riferisce ad un metodo e ad un impianto industriale per la produzione di gas metano da materiali contenenti carbonio organico. In a second preferred embodiment, the present invention relates to a method and to an industrial plant for the production of methane gas from materials containing organic carbon.
L?impianto ed il metodo sono in grado di gassificare tuti i materiali organici essenzialmente realizzando un nuovo tipo di pirolisi umida lenta in un campo elettromagnetico e senza alcuna emissione in atmosfera. The plant and the method are capable of gasifying all organic materials, essentially realizing a new type of slow wet pyrolysis in an electromagnetic field and without any emissions into the atmosphere.
La pirolisi ? un processo di scomposizione termochimica della sostanza organica senza apporto di ossigeno esterno che avviene per il solo effetto della temperatura. Pyrolysis? a process of thermochemical decomposition of the organic substance without external oxygen supply which occurs solely due to the effect of temperature.
Il funzionamento dell?impianto e del metodo di questa forma di realizzazione si basa sul principio che quando una molecola viene immessa in un campo elettrico si orienta secondo il suo dipolo e, se il campo elettrico viene ripetutamente invertito, la molecola ? costretta a riposizionarsi ad ogni inversione del campo e questo causa un riscaldamento delle molecole tanto pi? efficiente quanto pi? ? vicina la frequenza di risonanza della molecola, ma il riscaldamento avviene comunque anche quando le frequenze sono diverse da quelle di risonanza. The operation of the plant and of the method of this embodiment is based on the principle that when a molecule is placed in an electric field it orients itself according to its dipole and, if the electric field is repeatedly reversed, the molecule ? forced to reposition itself at each reversal of the field and this causes a heating of the molecules all the more? efficient as much as ? close to the resonance frequency of the molecule, but heating still occurs even when the frequencies are different from the resonance ones.
Anche in questa forma di realizzazione, l?impianto ? costituito da cinque sezioni e si basa inizialmente, nel primo settore, sul riscaldamento delle molecole entro un campo elettrico, sino alla scissione delle stesse con la formazione di un gas di sintesi (syngas) prevalentemente composto da CO-CO?-H?-O?; successivamente, nella seconda sezione, il cilindro della prima sezione funge da antenna direzionale per effetto del campo elettromagnetico indotto il disordine molecolare generato dalla temperatura subisce un contributo energetico apportato dalle onde di radiofrequenza ed i componenti del syngas si ionizzano fortemente, interagiscono con il vapore surriscaldato e creano nuove strutture ordinate che vengono indirizzate mediante il controllo del PLC della radiofrequenza originando prevalentemente CH?. L?impianto ? contenuto in una gabbia di Faraday che lo isola verso l?esterno. Also in this embodiment, the plant? consisting of five sections and is initially based, in the first sector, on the heating of the molecules within an electric field, until their splitting with the formation of a synthesis gas (syngas) mainly composed of CO-CO?-H?-O ?; subsequently, in the second section, the cylinder of the first section acts as a directional antenna due to the effect of the induced electromagnetic field, the molecular disorder generated by the temperature undergoes an energetic contribution made by the radiofrequency waves and the components of the syngas are strongly ionised, interacting with the superheated steam and create new ordered structures which are addressed by the PLC control of the radio frequency originating predominantly CH?. The plant? contained in a Faraday cage which isolates it from the outside.
La caratteristica principale dell?impianto, oltre a non avere alcuna immissione in atmosfera, consiste nel fatto che ? energeticamente autosufficiente in quanto utilizza una parte del gas prodotto per alimentare un motore endotermico o una turbina che azionando un alternatore fornisce l?energia elettrica utilizzata per riscaldare la camera di pirolisi e per azionare tutti i dispositivi necessari al funzionamento dell?impianto. The main feature of the plant, in addition to not having any emissions into the atmosphere, consists in the fact that ? energetically self-sufficient as it uses a part of the gas produced to feed an endothermic engine or a turbine which, by activating an alternator, supplies the electrical energy used to heat the pyrolysis chamber and to activate all the devices necessary for the functioning of the plant.
L?invenzione verr? ora descritta, a scopo esemplificativo e non limitativo, secondo una forma preferita di attuazione e con riferimento all?allegata fig. 1, che mostra lo schema funzionale dell?impianto di pirolisi. The invention will come now described, by way of non-limiting example, according to a preferred embodiment and with reference to the attached fig. 1, which shows the functional scheme of the pyrolysis plant.
Con riferimento alla fig. 1, con (1) ? indicato un impianto di pirolisi, secondo una prima forma di realizzazione dell?invenzione, riscaldato con correnti ad alta frequenza. Detto impianto di pirolisi (1) comprende: ? una prima sezione (100), in cui avviene la pirolisi dei materiali di rifiuto, si produce il gas di sintesi (syngas) e vengono scaricate le ceneri residue del trattamento; With reference to fig. 1, with (1) ? indicated is a pyrolysis plant, according to a first embodiment of the invention, heated with high-frequency currents. Said pyrolysis plant (1) comprises: ? a first section (100), in which the pyrolysis of the waste materials takes place, the synthesis gas (syngas) is produced and the residual ash from the treatment is discharged;
? una seconda sezione (200), in cui la frazione pi? leggera di dette ceneri (polverino di carbone o nerofumo) che viene trasportata dal syngas, viene separata da detto syngas; ? a second section (200), in which the fraction pi? light of said ashes (coal dust or carbon black) which is carried by the syngas, is separated from said syngas;
? una terza sezione (300), in cui avviene la distillazione frazionata dei prodotti della pirolisi, ottenendo idrocarburi altobollenti o residuo bituminoso, (tar); ? a third section (300), in which the fractional distillation of the pyrolysis products takes place, obtaining high-boiling hydrocarbons or bituminous residue, (tar);
? una quarta sezione (400), in cui si effettua il riciclo del residuo bituminoso di detta distillazione frazionata, per un ulteriore trattamento; ed ? a fourth section (400), in which the bituminous residue of said fractional distillation is recycled, for a further treatment; and
? una quinta sezione finale di emergenza (non illustrata): tale sezione finale comprender?, oltre alle pompe di sicurezza che interverranno automaticamente in caso di guasto del sistema, tutti gli impianti di sicurezza. ? a fifth final emergency section (not shown): this final section will include, in addition to the safety pumps which will intervene automatically in the event of a system failure, all the safety systems.
Detta prima sezione (100) comprende un cilindro (2), o camera di pirolisi, rotante intorno al proprio asse, provvisto esternamente di coibentazione, ad esempio in fibra ceramica. Nel cilindro ? saldata un'alettatura a vite di Archimede (3) con superficie temprata mediante nitrurazione. Said first section (100) comprises a cylinder (2), or pyrolysis chamber, rotating around its own axis, externally provided with insulation, for example in ceramic fibre. In the cylinder? welded Archimedean screw fins (3) with surface hardened by nitriding.
Il cilindro (2) ? posto in rotazione da un primo gruppo moto-riduttore (4) ed ? scaldato internamente da mezzi di riscaldamento (5), in modo tale da portare la massa solida da pirolizzare ad una temperatura di 680?750?C. The cylinder (2) ? placed in rotation by a first motor-reducer unit (4) and ? internally heated by heating means (5), in such a way as to bring the solid mass to be pyrolysed to a temperature of 680?750?C.
Secondo una forma preferita di attuazione, il diametro interno della camera di pirolisi (2) sar? preferibilmente tra 650 e 950 mm, mentre la lunghezza sar? preferibilmente tra 6000 mm e 8000 mm, con una rotazione ad una velocit? ad esempio tra 1 e 3 giri al minuto. Inoltre detti mezzi di riscaldamento (5) comprendono due generatori (6) ad induzione a radiofrequenza variabile tra 1,5 kHz e 2,5 kHz e con una potenza da 80 a 120 kW cadauno, ciascuno dei quali ? collegato con una bobina (7), all?interno della quale il cilindro di pirolisi (2) ruota lentamente. Le due bobine trasmettono la corrente indotta ad alta frequenza creata dai due generatori in modo tale che il cilindro (2) divenga sede di correnti parassite che lo scaldano per effetto Joule. According to a preferred embodiment, the internal diameter of the pyrolysis chamber (2) will be preferably between 650 and 950 mm, while the length sar? preferably between 6000 mm and 8000 mm, with a rotation at one speed? for example between 1 and 3 rpm. Furthermore, said heating means (5) comprise two induction generators (6) with variable radio frequency between 1.5 kHz and 2.5 kHz and with a power of between 80 and 120 kW each, each of which ? connected to a coil (7), inside which the pyrolysis cylinder (2) rotates slowly. The two coils transmit the high-frequency induced current created by the two generators in such a way that the cylinder (2) becomes the seat of parasitic currents which heat it by the Joule effect.
Il controllo della temperatura ? effettuato a mezzo di due sonde laser (non rappresentate) poste all?ingresso e a met? della camera di pirolisi (2). I due punti di controllo sono costituiti, ciascuno, da tre punti di rilievo sequenziali. Temperature control? carried out by means of two laser probes (not shown) placed at the entrance and in the middle of the pyrolysis chamber (2). The two control points each consist of three sequential survey points.
Il caricamento del cilindro (2) avviene, alla prima estremit? (2a) del cilindro (2), per mezzo di una tramoggia (8) che alimenta una coclea (9) posta in rotazione da un secondo gruppo moto-riduttore (10). Does the loading of the cylinder (2) take place at the first end? (2a) of the cylinder (2), by means of a hopper (8) which feeds a screw feeder (9) rotated by a second motor-reduction unit (10).
Il materiale viene caricato all?ingresso della camera di pirolisi (2). Se il rifiuto da trattare ? solido viene prima triturato in pezzetti dalla dimensione di circa 1 cm e caricato a mezzo della coclea (9) con rapporto di compressione preferibilmente da 1:150 a 1:250 e con velocit? regolabile. Se invece il rifiuto ? liquido, viene caricato nella sezione di riciclo (400), come meglio specificato nel seguito. The material is loaded at the inlet of the pyrolysis chamber (2). If the waste to be treated ? solid is first shredded into pieces of about 1 cm in size and loaded by means of the auger (9) with a compression ratio preferably from 1:150 to 1:250 and with speed? adjustable. What if the refusal? liquid, is loaded into the recycling section (400), as better specified below.
Il materiale caricato nella tramoggia (8) e inserito a pressione dalla coclea (9), giunge all?interno del cilindro (2) la cui rotazione, abbinata alla vite di Archimede (3), lo spinge verso la seconda estremit? (2b) del cilindro (2). The material loaded into the hopper (8) and inserted under pressure by the auger (9), reaches inside the cylinder (2) whose rotation, combined with the Archimedean screw (3), pushes it towards the second end. (2b) of the cylinder (2).
Nel percorso lungo il cilindro (2), alla temperatura di 680?750?C, il rifiuto solido, costituito prevalentemente da materiali plastici tipo polietilene, polipropilene, ABS, PET, polistirolo, poliuretani o da biomassa (legno, fanghi di depurazione, paglia di riso ecc.), subisce la pirolisi producendo composti solidi e gassosi. La frazione gassosa, denominata syngas, comprende una miscela di H2, CO, CO2 CH4 (frazione volatile a temperatura ambiente) e trascina idrocarburi altobollenti, prodotti ossigenati di vario peso molecolare sotto forma di vapore e polverino di carbonio (nerofumo), mentre quella solida comprende quantit? estremamente ridotte di ceneri residue. Along the way along the cylinder (2), at a temperature of 680?750?C, the solid waste, mainly made up of plastic materials such as polyethylene, polypropylene, ABS, PET, polystyrene, polyurethanes or biomass (wood, sewage sludge, straw of rice etc.), undergoes pyrolysis producing solid and gaseous compounds. The gaseous fraction, called syngas, comprises a mixture of H2, CO, CO2 CH4 (volatile fraction at room temperature) and carries high-boiling hydrocarbons, oxygenated products of various molecular weights in the form of vapor and carbon powder (carbon black), while the solid includes quantity extremely low in residual ash.
Attraverso un?apertura (11), il syngas entra in una camera di calma (12), mentre le ceneri residue vengono scaricate, attraverso un condotto (13), in un contenitore (14). Through an opening (11), the syngas enters a stilling chamber (12), while the residual ash is discharged, through a duct (13), into a container (14).
La seconda sezione (200) comprende detta camera di calma (12) da cui il syngas viene convogliato, attraverso un primo condotto (15) ed un secondo condotto (16), verso un primo ciclone (17) e, rispettivamente, un secondo ciclone (18). All?interno di detti cicloni (17) e (18), il syngas viene trattato in modo da completare la separazione dal polverino di carbone (nerofumo) che trasportava, detto polverino essendo scaricato attraverso un?apertura inferiore (17a, 18a) di detti primo e secondo ciclone (17, 18), mentre dalla parte superiore (17b, 18b) viene fatto uscire il syngas cos? depurato dal nerofumo. The second section (200) comprises said stilling chamber (12) from which the syngas is conveyed, through a first duct (15) and a second duct (16), towards a first cyclone (17) and, respectively, a second cyclone (18). Inside said cyclones (17) and (18), the syngas is treated so as to complete the separation from the coal dust (carbon black) it carried, said dust being discharged through a lower opening (17a, 18a) of said first and second cyclone (17, 18), while from the upper part (17b, 18b) the syngas is released so? cleaned of carbon black.
La terza sezione (300), in cui avviene la separazione frazionata dei prodotti della pirolisi, comprende una colonna di distillazione frazionata (19) composta da vari elementi sovrapposti dotati di piatti di condensazione e di serpentina di raffreddamento con regolazione della quantit? di acqua necessaria per mantenere ciascun modulo alla temperatura di condensazione delle miscele di altobollenti che abbandonano cos? il syngas. Tutti gli altobollenti condensati vengono convogliati sul fondo della colonna. The third section (300), in which the fractional separation of the pyrolysis products takes place, comprises a fractional distillation column (19) composed of various superimposed elements equipped with condensation plates and a cooling coil with regulation of the quantity? of water necessary to maintain each module at the condensation temperature of the high-boiling mixtures that leave so? the syngas. All the condensed high-boilings are carried to the bottom of the column.
Nella parte bassa della colonna di distillazione frazionata (19) entra, attraverso i condotti (20) e (21), il syngas proveniente dai cicloni separatori (17) e (18). Nella colonna (19) la frazione volatile del syngas si separa degli idrocarburi altobollenti, che vanno a costituire detto residuo bituminoso (tar) e esce dall?uscita superiore (22), mentre dall?uscita inferiore (23) escono detti idrocarburi altobollenti. Il syngas viene convogliato verso una soffiante (non rappresentata) che crea una leggera depressione nella camera di pirolisi (2) e invia il syngas verso delle colonne di lavaggio basico e acido (non rappresentate). The syngas coming from the cyclone separators (17) and (18) enters the lower part of the fractional distillation column (19) through the ducts (20) and (21). In column (19) the volatile fraction of the syngas separates from the high-boiling hydrocarbons, which form said bituminous residue (tar) and comes out from the upper outlet (22), while from the lower outlet (23) said high-boiling hydrocarbons come out. The syngas is conveyed towards a blower (not shown) which creates a slight depression in the pyrolysis chamber (2) and sends the syngas towards the basic and acid washing columns (not shown).
Attraverso un condotto (24), che entra nella parte alta della colonna (19), viene fatta passare dell?acqua di raffreddamento, detto ingresso essendo controllato da una valvola (25) ed un contalitri elettronico (non rappresentato). L?acqua attraversa quindi una serpentina (26) ed esce, sotto forma di vapore surriscaldato, da un condotto (27). Cooling water is passed through a duct (24), which enters the upper part of the column (19), said inlet being controlled by a valve (25) and an electronic meter (not shown). The water then passes through a coil (26) and exits, in the form of superheated steam, from a duct (27).
Nella quarta sezione (400) avviene il ricircolo degli idrocarburi altobollenti uscenti, attraverso il condotto (23), dalla parte bassa della colonna di distillazione frazionata (19), e della polvere di carbone (nerofumo) estratta dai cicloni separatori (17) e (18) posti all?uscita della camera di calma (12). In the fourth section (400) the recirculation of the outgoing high-boiling hydrocarbons takes place, through the duct (23), from the lower part of the fractional distillation column (19), and of the coal powder (carbon black) extracted by the separator cyclones (17) and ( 18) placed at the exit of the still room (12).
Detta quarta sezione (400) comprende una pompa (28) che immette detti idrocarburi altobollenti in un turbomixer (29), azionato da un terzo gruppo moto-riduttore (30), il flusso di detti idrocarburi altobollenti essendo regolato da una valvola (31). Said fourth section (400) comprises a pump (28) which introduces said high-boiling hydrocarbons into a turbomixer (29), operated by a third motor-reduction unit (30), the flow of said high-boiling hydrocarbons being regulated by a valve (31) .
Attraverso un condotto (32) viene inserito nel turbo-mixer (29) il nerofumo proveniente dai cicloni (17) e (18), il flusso di detto nerofumo essendo regolato da una valvola (33). The carbon black coming from the cyclones (17) and (18) is introduced into the turbo-mixer (29) through a duct (32), the flow of said carbon black being regulated by a valve (33).
Attraverso un condotto (34), vengono inseriti nel turbo-mixer (29) anche rifiuti liquidi (oli vegetali e grassi esausti), detti rifiuti liquidi essendo inseriti in una tramoggia (35) ed il loro flusso essendo regolato da una valvola (36). Through a duct (34), liquid waste (vegetable oils and waste fats) are also introduced into the turbo-mixer (29), said liquid waste being introduced into a hopper (35) and their flow being regulated by a valve (36) .
Nel turbo-mixer (29) si produce un?emulsione che, percorrendo un condotto (37), giunge ad una pompa (38) che la inserisce nella camera di pirolisi (2) attraverso un condotto (39). Attraverso un condotto (40), viene introdotto nella camera di pirolisi (2) il vapore surriscaldato uscente dalla colonna di distillazione frazionata (19) attraverso il condotto (27), il flusso del vapore essendo regolato da una valvola (41). In the turbo-mixer (29) an emulsion is produced which, traveling through a duct (37), reaches a pump (38) which introduces it into the pyrolysis chamber (2) through a duct (39). Through a duct (40), the superheated steam leaving the fractional distillation column (19) is introduced into the pyrolysis chamber (2) through the duct (27), the steam flow being regulated by a valve (41).
Il turbo-mixer (29) ? in grado di miscelare intimamente il prodotto carbonioso che esce dai cicloni separatori e il tar estratto alla base della colonna di distillazione frazionata (19). Detta miscelazione viene reimmessa all?ingresso della camera di pirolisi unitamente al vapore surriscaldato proveniente dalle serpentine della colonna di separazione frazionata. La quantit? di vapore ? variabile tra il 10% e il 15% in peso del rifiuto caricato in ingresso del pirolizzatore. Detta variazione ? imputabile alla natura del rifiuto trattato. Questa miscelazione diventa molto efficiente con l?aggiunta dell?olio vegetale esausto, inserito nella tramoggia (35), proveniente da raccolta differenziata, in quanto possiede eccellenti propriet? dissolutive degli idrocarburi, anche a concentrazioni elevate. The turbo-mixer (29) ? capable of intimately mixing the carbonaceous product that comes out of the separating cyclones and the tar extracted at the base of the fractional distillation column (19). Said mixing is reintroduced to the inlet of the pyrolysis chamber together with the superheated steam coming from the coils of the fractional separation column. The quantity? of steam ? variable between 10% and 15% by weight of the waste loaded at the inlet of the pyrolyzer. This variation? attributable to the nature of the treated waste. This mixing becomes very efficient with the addition of waste vegetable oil, inserted in the hopper (35), coming from differentiated collection, as it has excellent oil properties. dissolving properties of hydrocarbons, even at high concentrations.
La percentuale di ossigeno presente in camera di pirolisi ? controllata e registrata continuamente da uno strumento analitico tipo SYN 100 in grado di verificare anche le percentuale di CO, CO2, H2 e CH4 nel syngas prodotto. Per evitare sia fuoriuscite di syngas che infiltrazioni di ossigeno nella camera di pirolisi, l?alimentazione del rifiuto solido ? effettuata con detta coclea (9) ad elevata pressione di compattazione e preriscaldata a idonea temperatura (a seconda della tipologia del rifiuto) per consentire la formazione di un tappo tale da garantire la tenuta del sistema ad ingressi di aria e quindi di ossigeno nella camera di pirolisi (2). Tra la tramoggia di carico e la coclea ? inserita una valvola stellare per evitare infiltrazioni di aria e quindi di ossigeno nocivo al processo di pirolisi. The percentage of oxygen present in the pyrolysis chamber? continuously controlled and recorded by an analytical instrument such as SYN 100 capable of also verifying the percentage of CO, CO2, H2 and CH4 in the syngas produced. To avoid both syngas leaks and oxygen infiltrations in the pyrolysis chamber, the feeding of the solid waste is ? carried out with said auger (9) at high compaction pressure and preheated to a suitable temperature (depending on the type of waste) to allow the formation of a plug such as to guarantee the tightness of the system against the entry of air and therefore of oxygen into the chamber pyrolysis (2). Between the loading hopper and the auger ? a rotary valve has been inserted to avoid infiltration of air and therefore of oxygen harmful to the pyrolysis process.
La camera di pirolisi (2) ? mantenuta in leggera depressione da detta soffiante che invia il syngas verso le colonne di lavaggio basico e acido, detta depressione essendo pari a circa 0,7 mbar in meno rispetto alla pressione esterna. The pyrolysis chamber (2) ? maintained in slight depression by said blower which sends the syngas towards the basic and acid washing columns, said depression being equal to about 0.7 mbar less than the external pressure.
In caso di emergenza, il syngas prodotto, dopo lavaggio, viene avviato a torcia di emergenza, i generatori di induzione vengono spenti e la camera di pirolisi viene lavata con gas azoto. In case of emergency, the syngas produced, after washing, is started with an emergency torch, the induction generators are turned off and the pyrolysis chamber is washed with nitrogen gas.
Secondo un?ulteriore forma di realizzazione preferita, l?impianto dell?invenzione comprende sostanzialmente: According to a further preferred embodiment, the system of the invention substantially comprises:
- un sistema (non illustrato) di alimentazione dei rifiuti; - a waste feeding system (not shown);
- una prima sezione (100) connessa operativamente al sistema di alimentazione dei rifiuti e costituita da un cilindro bimetallico concentrico (2) munito di una vite di Archimede (3), coibentato esternamente e ruotante lentamente intorno al proprio asse; - a first section (100) operatively connected to the waste feed system and consisting of a concentric bimetallic cylinder (2) equipped with an Archimedean screw (3), externally insulated and slowly rotating around its own axis;
- il cilindro (2) termina in una seconda sezione (200) in cui si completano le reazioni termochimiche, e la frazione pi? leggera della reazione viene separata dalle ceneri e trasportata dal syngas in una terza sezione (300) in cui avvengono il raffreddamento e la separazione del syngas dai prodotti altobollenti della pirolisi e dal residuo bituminoso oltrech? dal carbonio residuo; - the cylinder (2) ends in a second section (200) in which the thermochemical reactions are completed, and the smallest fraction? light of the reaction is separated from the ashes and transported by the syngas into a third section (300) where the cooling and separation of the syngas from the high-boiling products of pyrolysis and from the bituminous residue as well as? from residual carbon;
- una quarta sezione di lavaggio e pulizia (400) in cui il syngas entra, viene lavato e pulito, e poi viene inviato all?utilizzazione; ed - a fourth washing and cleaning section (400) into which the syngas enters, is washed and cleaned, and is then sent for use; and
- una quinta sezione finale di emergenza (non illustrata), detta sezione finale comprendendo, oltre alle pompe di sicurezza che interverranno automaticamente in caso di guasto del sistema, tutti gli impianti di sicurezza. - a fifth final emergency section (not shown), said final section comprising, in addition to the safety pumps which will intervene automatically in the event of a system failure, all the safety systems.
In particolare, secondo il funzionamento dell?impianto inventivo, il materiale solido sminuzzato contenuto in un silos viene inviato nella sezione di caricamento (8) munita di valvola stellare e a mezzo di una coclea (9) posta in rotazione da un gruppo motoriduttore il materiale viene pressato ed inviato nel cilindro unitamente ad una piccola quantit? di acqua che viene iniettata a mezzo di una pompa che inietter? al caso anche i rifiuti liquidi nella prima sezione. In particular, according to the operation of the inventive plant, the shredded solid material contained in a silo is sent to the loading section (8) equipped with a rotary valve and by means of an auger (9) rotated by a gear motor unit, the material is pressed and sent in the cylinder together with a small quantity? of water that is injected by means of a pump that inietter? if necessary also the liquid waste in the first section.
Il materiale giunge all?interno del cilindro (2) munito nella parte iniziale di un sistema raschiante atto ad impedire la formazione di grumi. La rotazione del cilindro (2), realizzata mediante un gruppo motoriduttore, provvede, grazie alla vite di Archimede (3) contenuta all?interno, a spingere il materiale verso la parte opposta della camera, e, durante il percorso (300 mm ogni giro del cilindro), tutta la parte organica si trasforma in syngas lasciando sul fondo del cilindro (2) le ceneri inerti e gli eventuali metalli contenuti nei rifiuti alimentati che, trasportati dalla vite di Archimede (3), giungeranno alla fine del cilindro (2) e cadranno sul fondo della seconda sezione (200). The material arrives inside the cylinder (2) equipped in the initial part with a scraping system able to prevent the formation of lumps. The rotation of the cylinder (2), achieved by means of a gearmotor unit, pushes the material towards the opposite side of the chamber, thanks to the Archimedean screw (3) contained inside, and, during the journey (300 mm each revolution of the cylinder), all the organic part is transformed into syngas leaving on the bottom of the cylinder (2) the inert ashes and any metals contained in the fed waste which, transported by the Archimedean screw (3), will reach the end of the cylinder (2) and they will fall to the bottom of the second section (200).
La prima sezione (100) comprende un reattore riscaldato da due o pi? generatori (6) di correnti indotte di potenza adeguata e con una frequenza tra 1,5 e 5 KHz in modo che il cilindro diviene sede di correnti parassite che lo riscaldano per effetto Joule e porteranno le temperature interne al reattore tra 650 e 750 ?C alla quale avviene il processo di pirolisi. The first section (100) comprises a reactor heated by two or more? generators (6) of induced currents of adequate power and with a frequency between 1.5 and 5 KHz so that the cylinder becomes the seat of parasitic currents which heat it by the Joule effect and will bring the temperatures inside the reactor between 650 and 750 ?C where the pyrolysis process takes place.
I generatori (6) sono collegati ciascuno ad una bobina (7) all?interno della quale ruota il cilindro (2) con una velocit? determinata da PLC e calcolata dal PLC in funzione dei tempi di trasformazione delle singole matrici introdotte. The generators (6) are each connected to a coil (7) inside which the cylinder (2) rotates with a speed? determined by the PLC and calculated by the PLC according to the transformation times of the single matrices introduced.
Secondo questa forma preferita di realizzazione, il cilindro (2) avr? un diametro compreso tra 1200 e 1500 mm e una lunghezza tra i 9 e 12 m, sar? munito di un impianto comandato da motoriduttore atto alla sua rotazione oltre ad un sistema atto all?assorbimento delle dilatazioni dovute alle temperature. According to this preferred embodiment, the cylinder (2) will have a diameter between 1200 and 1500 mm and a length between 9 and 12 m, sar? equipped with a system controlled by a gear motor suitable for its rotation as well as a system suitable for absorbing expansion due to temperatures.
Il cilindro (2), nelle sue estremit?, sar? isolato con una baderna alloggiata in una cava e tenuta in pressione da una serie di molle ed avr? altres? un secondo sistema di isolamento di sicurezza a gas di azoto. The cylinder (2), in its extremities?, sar? isolated with a packing housed in a hollow and held under pressure by a series of springs and will have? otherwise? a second nitrogen gas safety isolation system.
Nell?interno del cilindro (2) avviene un controllo continuo delle temperature a mezzo di termocoppie e di sonde laser oltre ad un controllo delle pressioni interne che, a mezzo di un sistema di pompe a vuoto, mantiene il cilindro (2) e la camera di calma (12) finale ad una leggera depressione (circa 0,7 mbar) rispetto alla pressione atmosferica esterna, onde impedire qualsiasi rischio di esplosione. Inside the cylinder (2) there is a continuous control of the temperatures by means of thermocouples and laser probes as well as a control of the internal pressures which, by means of a system of vacuum pumps, keeps the cylinder (2) and the chamber calm (12) final to a slight depression (about 0.7 mbar) with respect to the external atmospheric pressure, in order to prevent any risk of explosion.
Il cilindro (2) ed i sistemi di riscaldamento (5) e di movimentazione e controllo sono posti all?interno di una gabbia di Faraday (non illustrata) per isolare l?esterno dalle correnti indotte interne. The cylinder (2) and the heating (5) and motion and control systems are placed inside a Faraday cage (not shown) to insulate the outside from the internal induced currents.
Il syngas dal cilindro (2) viene inviato nella seconda sezione (200) costituita da una camera di calma (12) dove avvengono le reazioni termochimiche indotte dalle onde radiomagnetiche ed il syngas e le frazioni pi? leggere si separano dalle ceneri. The syngas from the cylinder (2) is sent to the second section (200) consisting of a stilling chamber (12) where the thermochemical reactions induced by the radiomagnetic waves take place and the syngas and the smaller fractions read separate from the ashes.
La camera di calma o di copula ionica (12) ? munita di un sistema di coclee per l?estrazione delle ceneri. Le coclee comandate da PLC rimangono costantemente piene di cenere che funge da tappo per impedire la fuoriuscita dei gas e l?entrata dell?aria esterna; nella parte finale saranno comunque munite di una valvola unidirezionale di sicurezza. The chamber of calm or ionic copula (12) ? equipped with a screw system for the extraction of the ashes. The augers controlled by PLC remain constantly full of ash which acts as a stopper to prevent the gas from escaping and the outside air from entering; in the final part they will still be equipped with a one-way safety valve.
Il syngas viene quindi convogliato in una terza sezione (300) di raffreddamento e distillazione per essere separato dalla parte condensabile e dalla parte solida a mezzo di una colonna di distillazione (19) e di un separatore centrifugo (17, 18). Tale sezione (300) sar? inoltre munita di un impianto frigorifero o di un sistema ORC di recupero e trasformazione del calore in energia. Il separatore centrifugo (17, 18) divider? i prodotti condensati e solidi dalle acque di raffreddamento, per poi inviare i prodotti condensati e divisi all?inizio del ciclo per una seconda distillazione; oppure, i prodotti separati saranno immagazzinati per un uso industriale degli stessi. The syngas is then conveyed to a third cooling and distillation section (300) to be separated from the condensable part and the solid part by means of a distillation column (19) and a centrifugal separator (17, 18). This section (300) will be? also equipped with a refrigeration system or an ORC system for the recovery and transformation of heat into energy. The centrifugal separator (17, 18) will divide? the condensed and solid products from the cooling waters, to then send the condensed and divided products at the beginning of the cycle for a second distillation; or, the separated products will be stored for an industrial use of the same.
Il syngas raffreddato al di sotto di 80?C sar? inviato in una quarta sezione di lavaggio (400) che, a mezzo di due torri di raffreddamento (non illustrate) contenenti una miscela d?acqua, debolmente acida la prima e debolmente basica la seconda, provvederanno, oltre che ad un ulteriore raffreddamento del syngas che si trova in una fase di completamento del processo di catalisi, a fare s? che il PH rimanga compreso tra i valori di 6 e 7 durante tutto il processo. Gli eventuali idrocarburi altobollenti condensati saranno separati dalle acque a mezzo di separatori centrifughi e reinviati all?inizio del ciclo. Successivamente il gas passa in una colonna di filtrazione a carboni attivi per perdere umidit?; oltre ai carboni attivi, questa sezione (400) sar? dotata di un sistema filtrante spinto per eliminare ogni formazione di eventuali inquinanti presenti. The syngas cooled below 80?C sar? sent to a fourth washing section (400) which, by means of two cooling towers (not shown) containing a mixture of water, the first weakly acidic and the second weakly basic, will provide, in addition to further cooling of the syngas which is in a stage of completion of the catalysis process, to do s? that the PH remains between the values of 6 and 7 throughout the process. Any condensed high-boiling hydrocarbons will be separated from the water by means of centrifugal separators and sent back to the beginning of the cycle. Subsequently the gas passes into an activated carbon filtration column to lose humidity; in addition to activated carbon, this section (400) will be? equipped with a filtering system pushed to eliminate any formation of any pollutants present.
Il gas sar? quindi spinto a mezzo di pompe verso l?utilizzazione. Will the gas be then pushed by means of pumps towards use.
Per quanto riguarda la quinta sezione finale di emergenza comprendente, oltre alle pompe di sicurezza che interverranno automaticamente in caso di guasto del sistema, tutti gli impianti di sicurezza, in caso di emergenza il syngas prodotto, dopo il lavaggio, viene inviato ad una torcia di emergenza; i generatori ad induzione (6) vengono spenti automaticamente e la camera di pirolisi (100) e quella di calma (12) sono lavate con un gas azoto. As regards the fifth final emergency section including, in addition to the safety pumps which will intervene automatically in the event of a system failure, all the safety systems, in the event of an emergency, the syngas produced, after washing, is sent to a emergency; the induction generators (6) are switched off automatically and the pyrolysis chamber (100) and the stilling chamber (12) are purged with a nitrogen gas.
Questa sezione di sicurezza comprende altres? un sistema di collegamento di emergenza munito di appropriate valvole atto a convogliare verso la torcia di emergenza il gas della camera di pirolisi (100) in caso di guasto. This security section also includes? an emergency connection system equipped with appropriate valves able to convey the gas of the pyrolysis chamber (100) towards the emergency torch in case of failure.
La quinta sezione finale comprende altres? un impianto per la produzione di azoto mediante separazione e il relativo serbatoio di scorta dell?azoto. The fifth final section also includes? a plant for the production of nitrogen by separation and the relative nitrogen storage tank.
L?invenzione ? stata descritta, a scopo illustrativo e non limitativo, secondo una forma preferita di attuazione. Il tecnico esperto del settore potr? trovare numerose varianti, tutte ricadenti nell?ambito di protezione delle rivendicazioni allegate. The invention? been described, for illustrative and non-limiting purposes, according to a preferred embodiment. The expert technician of the sector can find numerous variants, all falling within the scope of protection of the attached claims.
Claims (15)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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IT102020000032600A IT202000032600A1 (en) | 2020-12-29 | 2020-12-29 | Method and plant for the disposal of waste consisting of plastic materials or biomass, and of all organic materials that contain carbon in their molecules |
US18/270,182 US20240117259A1 (en) | 2020-12-29 | 2021-12-24 | Method and plant for disposing of wastes composed of plastic materials and biomasses |
EP21847548.1A EP4271766A1 (en) | 2020-12-29 | 2021-12-24 | Method and plant for disposing of wastes composed of plastic materials or biomasses |
PCT/IT2021/050426 WO2022144942A1 (en) | 2020-12-29 | 2021-12-24 | Method and plant for disposing of wastes composed of plastic materials or biomasses |
CN202180092153.1A CN116783268A (en) | 2020-12-29 | 2021-12-24 | Method and device for disposing of waste consisting of plastic material or biomass |
JP2023563360A JP2024501785A (en) | 2020-12-29 | 2021-12-24 | Method and plant for processing waste containing plastic materials or biomass |
CA3206919A CA3206919A1 (en) | 2020-12-29 | 2021-12-24 | Method and plant for disposing of wastes composed of plastic materials or biomasses |
MX2023007725A MX2023007725A (en) | 2020-12-29 | 2021-12-24 | Method and plant for disposing of wastes composed of plastic materials or biomasses. |
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IT102020000032600A IT202000032600A1 (en) | 2020-12-29 | 2020-12-29 | Method and plant for the disposal of waste consisting of plastic materials or biomass, and of all organic materials that contain carbon in their molecules |
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US (1) | US20240117259A1 (en) |
EP (1) | EP4271766A1 (en) |
JP (1) | JP2024501785A (en) |
CN (1) | CN116783268A (en) |
CA (1) | CA3206919A1 (en) |
IT (1) | IT202000032600A1 (en) |
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WO2016006010A1 (en) * | 2014-07-09 | 2016-01-14 | Area 45.55 S.R.L. | Method and plant for producing methane from materials containing organic carbon |
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2020
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2021
- 2021-12-24 CN CN202180092153.1A patent/CN116783268A/en active Pending
- 2021-12-24 JP JP2023563360A patent/JP2024501785A/en active Pending
- 2021-12-24 EP EP21847548.1A patent/EP4271766A1/en active Pending
- 2021-12-24 WO PCT/IT2021/050426 patent/WO2022144942A1/en active Application Filing
- 2021-12-24 MX MX2023007725A patent/MX2023007725A/en unknown
- 2021-12-24 CA CA3206919A patent/CA3206919A1/en active Pending
- 2021-12-24 US US18/270,182 patent/US20240117259A1/en active Pending
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WO2016006010A1 (en) * | 2014-07-09 | 2016-01-14 | Area 45.55 S.R.L. | Method and plant for producing methane from materials containing organic carbon |
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CA3206919A1 (en) | 2022-07-07 |
WO2022144942A1 (en) | 2022-07-07 |
US20240117259A1 (en) | 2024-04-11 |
CN116783268A (en) | 2023-09-19 |
MX2023007725A (en) | 2023-09-25 |
EP4271766A1 (en) | 2023-11-08 |
JP2024501785A (en) | 2024-01-15 |
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