EP1607681A1 - Procédé et dipositif pour le traitement à haute température de matériaux combustibles en particulier de déchets - Google Patents

Procédé et dipositif pour le traitement à haute température de matériaux combustibles en particulier de déchets Download PDF

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Publication number
EP1607681A1
EP1607681A1 EP04425425A EP04425425A EP1607681A1 EP 1607681 A1 EP1607681 A1 EP 1607681A1 EP 04425425 A EP04425425 A EP 04425425A EP 04425425 A EP04425425 A EP 04425425A EP 1607681 A1 EP1607681 A1 EP 1607681A1
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EP
European Patent Office
Prior art keywords
gas
chamber
combustion chamber
combustible material
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP04425425A
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German (de)
English (en)
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EP1607681B1 (fr
Inventor
Enzo Morandi
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SCOUTECH Srl
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Certo Srl
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Priority to ES04425425T priority Critical patent/ES2369907T3/es
Priority to DK04425425.8T priority patent/DK1607681T3/da
Application filed by Certo Srl filed Critical Certo Srl
Priority to AT04425425T priority patent/ATE517292T1/de
Priority to PL04425425T priority patent/PL1607681T3/pl
Priority to PT04425425T priority patent/PT1607681E/pt
Priority to SI200431763T priority patent/SI1607681T1/sl
Priority to EP04425425A priority patent/EP1607681B1/fr
Priority to PCT/EP2005/005996 priority patent/WO2005121645A1/fr
Priority to US11/570,419 priority patent/US20080282946A1/en
Priority to CA2569886A priority patent/CA2569886C/fr
Publication of EP1607681A1 publication Critical patent/EP1607681A1/fr
Application granted granted Critical
Publication of EP1607681B1 publication Critical patent/EP1607681B1/fr
Priority to CY20111100998T priority patent/CY1112534T1/el
Anticipated expiration legal-status Critical
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    • 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
    • F23G5/50—Control or safety arrangements
    • 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
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0273—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using indirect heating
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/10—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/12—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/104—Combustion in two or more stages with ash melting stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/101—Furnace arrangements with stepped or inclined grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/80—Furnaces with other means for moving the waste through the combustion zone
    • F23G2203/803—Rams or pushers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/102—Arrangement of sensing devices for pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/108—Arrangement of sensing devices for hydrocarbon concentration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/20—Medical materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/22—Waste papers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/261—Woodwaste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/262—Agricultural waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/28—Plastics or rubber like materials
    • F23G2209/281—Tyres
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/01005—Mixing water to ash
    • 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
    • F23L2900/07009—Injection of steam into the combustion chamber

Definitions

  • the present invention relates to an apparatus for high temperature heat treatment of combustible material, in particular industrial and municipal waste of any kind, even toxic or noxious waste, for minimizing the dangerousness of the combustion products. Furthermore, the invention relates to a pyrolytic converter for recovering the energy content of said waste.
  • waste pyrolytic processes have been proposed, i.e. heat treatments for transformation of large molecules into simpler substances. This transformation is made in an environment poor in oxygen and at a high temperature enough to volatilize the organic pollutants. More in detail, without oxygen, i.e. in a reducing environment, pyrolysis causes the thermochemical decomposition of the material. The process, for its endothermic nature, causes the scission of the complex molecules that form rubber, plastics, cellulosic components and other complex chemical components, turning them into structurally simpler molecules.
  • a gaseous combustible mixture is obtained that can be used, for example, for feeding a gas turbine and producing, then, electric energy.
  • the combustion of the waste causes a thermal decomposition and mineralisation of the many organic substances contained in the waste and a transformation of inorganic substances into more easily separable species, which can be recovered or can be safely disposed of, thus allowing a huge reduction of the weight and of the volume of the waste (reaching up to 10% of the starting volume).
  • the waste that can be treated in this type of plants may be residues from paper, plastics, rubber converting processes, tyres, as well as combustible material obtained from biomass, such as wood and agriculture residues, and even organic material such as waste of hospitals or toxic/noxious industrial waste.
  • the substances emitted in the traditional combustion processes are the following: dust, carbon monoxide, sulphur dioxide, nitrogen oxides, hydrochloric or hydrofluoric acid, heavy metals and chloride-organic substances (dioxins and furans).
  • the presence of dioxins and furans in the exhausted flue gas causes a strong environmental impact of the existing processes.
  • the production of dioxins and furans occurs mainly owing to a not full combustion of the waste products.
  • the combustion process must provide: the supply of a sufficient amount of oxygen, a high temperature and long time of contact.
  • the resulting dioxins and the furans can be filtered with the aid of activated carbon (with very high costs of operation) or other filtering systems.
  • the existing apparatus for burning waste for example of the type described in US 3759036 and US 4732092, is not always capable of avoiding the emission of pollutants so that they fall within the limits provided by the environmental laws. In other cases, instead, it is possible to fall within said limits only with the use of structurally complicated and expensive apparatus, in particular concerning the energy necessary for completing the process.
  • the combustible material in the pyrolysis chamber is heated in a reducing environment up to a determined temperature suitable for causing a preliminary combustion, obtaining partially burnt material and semiwater gas, comprising air gas and water gas.
  • the partially burnt material and the semiwater gas are then fed and subjected to a further oxygenation/combustion with production of a gaseous mixture at high temperature.
  • the production of semiwater gas in the pyrolysis chamber is carried out sending a vapour jet and a gas jet at high temperature on the burning material which is arranged on a grid, and then the burning material reaches the combustion chamber by moving the grid.
  • the semiwater gas reaches a predetermined zone of the combustion chamber according to a path different from that of the combustible material.
  • the gas at high temperature produced in the combustion chamber can cross a post-combustion chamber within which a further heating is effected by feeding a further current containing oxygen with completion of the combustion. Then, the burnt gas produced in the post-combustion chamber, having a low oxygen content, is sent to the pyrolysis chamber.
  • the gas produced in one of the chambers is transferred between a starting chamber and an arrival chamber by a system comprising a conveying fluid current that is supplied within a duct that connects the chambers same.
  • the said conveying fluid is fed into the duct direct towards the arrival chamber at a suitable speed to cause a suction of the gas inside.
  • both the high speed of the conveying fluid and its expansion, which occurs at the outlet arrival chamber attract in the duct the same gas to convey, i.e. the semiwater gas or the burnt gas.
  • the attraction therefore, on one hand occurs by entrainment and on the other hand by pressure difference between the inlet and the outlet of the duct.
  • the conveyance of the semiwater gas from the pyrolysis chamber to the combustion chamber is made by sending in the duct variably oxygenated conveying gas as conveying fluid. More in detail, according to the process conditions it is possible to adjust the amount of oxygen supplied.
  • the burnt gas produced in the post-combustion chamber before being conveyed to the pyrolysis chamber is separated from possible solid particles giving a vortical movement to the burnt gas, which separate from the solid particles by centrifugal acceleration.
  • This can be made, for example, forcing the burnt gas against the walls of said post-combustion chamber which are suitable for causing said vortical movement.
  • a preliminary ignition step is provided suitable for heating the different chambers up to a determined temperature.
  • the step of heating the pyrolysis chamber provides a preliminary ignition step for bringing the pyrolysis chamber up to a determined temperature necessary so that the reactions take place for the creation of air gas and of water gas.
  • the process is auto-fed.
  • the production of the gaseous mixture comprising the air gas and the water gas is made sending an air jet and a vapour jet on the burning material in the pyrolysis chamber when it has achieved a measured temperature.
  • the air jet and the vapour jet are sent on the burning material the semiwater gas, i.e. air gas and water gas, is produced according to known reactions.
  • the reaction that causes the production of water gas is an endothermic reaction and the required energy is supplied by the reaction that causes the production of the air gas that is instead an exothermic reaction.
  • a preliminary heating step is provided suitable for bringing the combustion chamber same to a determined temperature, in particular this step is made before conveying the burnt gas to the pyrolysis chamber. This to avoid conveying in the pyrolysis chamber gas with high content of oxygen that would be potentially dangerous since it could give rise to explosions and backfire.
  • conveying in the pyrolysis chamber at least one part of the burnt gas produced in the post-combustion chamber is made only when the temperature in the different chambers has achieved determined values. This because until the temperature in the combustion chamber has not achieved a determined value the amount of oxygen is very high and then it is not possible sending the mixture of gas to the pyrolysis chamber for not to affect its correct operation.
  • a step is provided of feeding the combustible material in the pyrolysis chamber by forcing it through a tapered duct in order to reduce its volume.
  • This avoids dangerous backfire, provides a semi-combustion of the combustible material and assists a measurement of its composition, in particular on the content of carbon in order to adjust the flows and the temperature in the different chambers of the apparatus.
  • downstream of the heat treatment of the combustible material treatments are provided of reduction of the waste material.
  • a treatment of neutralisation is provided, which exploits the produced heat during the heat treatment of the combustible material making inert substances from the ashes deriving from the combustion.
  • the ashes coming from the apparatus are superheated by jets of semiwater gas and by air at high temperature for then melting and flowing through a crucible having an opening, an air or vapour jet transforming it into inert grains.
  • the molten material can be fed to special moulds, forming bricks for the building industry.
  • an apparatus for heat treatment of combustible material in particular waste, comprises a pyrolysis chamber where the combustible material is heated in a reducing environment and a combustion chamber where the combustible material is conveyed for being completely burnt, whose main feature is that said pyrolysis chamber comprises means for feeding a gas at high temperature drawn from the combustion chamber and vapour, in order to make semiwater gas which, once reached the combustion chamber, is burnt for causing a considerable rise of the combustion temperature.
  • Means can be provided for conveying the semiwater gas from the pyrolysis chamber to the combustion chamber according to a path different from that of the combustible material.
  • means are provided for connecting a starting chamber to an arrival chamber, in particular for conveying the semiwater gas from the pyrolysis chamber to the combustion chamber or for conveying at least one part of the burnt gas up to the pyrolysis chamber, comprising at least one duct communicating with both the chambers within which a conveying fluid current is fed, the said conveying fluid being supplied to said duct at a suitable speed to cause a suction inside, in particular of the semiwater gas or the burnt gas.
  • a post-combustion chamber downstream of the combustion chamber a post-combustion chamber can be provided within which the gaseous mixture is further heated at high temperature obtaining burnt gas by feeding a current containing oxygen, said further heating causing a full decomposition of the part of the gaseous mixture not yet dissociated.
  • means are provided for feeding the combustible material in the pyrolysis chamber comprising means for forcing the passage through a tapered duct in order to reduce its volume.
  • the means for forcing the motion of the combustible material in the feeding duct comprise a conical track system.
  • the feeding means are associated to means for measuring at least one parameter of process in the pyrolysis chamber. This adjusts the feeding speed of the combustible material in the pyrolysis chamber according to the variation of the parameters of process, in particular of the temperature in the pyrolysis chamber.
  • each chamber ignition means are provided suitable for giving the starting energy necessary for activating the heat treatment of the combustible material.
  • directional elements can be arranged of refractory material suitable for deflecting a flow of gas to determined zones of the apparatus, said directional elements being arranged between the different chambers of the apparatus.
  • directional elements are provided of the gas flow obtained during the heat treatment of the combustible material.
  • the directional elements of the gas flow are diaphragms suitably shaped of refractory material that define the different chambers of the apparatus.
  • ducts are provided for introducing hot air.
  • a first exemplary embodiment is diagrammatically shown of an apparatus 1, according to the present invention, for high temperature heat treatment of combustible material, in particular municipal solid waste (waste products), or combustible waste of a desired nature, provided that it is a solid and not explosive waste.
  • It comprises a pyrolysis chamber 41, where the material 85 to treat is heated in a reducing environment, up to a temperature suitable for making a first molecular break of the substances in it present, and a combustion chamber 42 within which a full combustion is achieved of the combustible material by introducing a predetermined flow of oxygen 8.
  • the full combustion of the combustible material is carried out only in combustion chamber 42 of the apparatus 1 and produces, in particular, gas at high temperature that is directed back to pyrolysis chamber 41 in order to remarkably raise the temperature of pyrolysis.
  • this water vapour 86, through a duct 6, and air 87, through a duct 7, are added into pyrolysis chamber 41 to produce semiwater gas that is then burnt in combustion chamber 42 by feeding a current 8 of a fluid containing oxygen to raise the combustion temperature in order to carry out the process at a temperature that assures the molecular break of the totality of the toxic substances.
  • a part of the burnt gas 88 produced by the combustion of the burning material 85 in combustion chamber 42 is sent to pyrolysis chamber 41 through a duct 80 by introducing a conveying fluid 81.
  • the current of burnt gas 82 that reaches pyrolysis chamber 41 crosses the burning material to cause the production of the semiwater gas.
  • FIG 2 an alternative exemplary embodiment is diagrammatically shown of the apparatus 1 of figure 1.
  • the substantial difference with the previous exemplary embodiment is the presence of a post-combustion chamber 43 downstream of combustion chamber 42.
  • a preliminary step is always provided of feeding the waste subject to heat treatment in pyrolysis chamber 41 through a tapered duct 20, block 101 of figure 3.
  • duct 20 the waste is preheated up to a temperature of about 300°C exploiting the heat produced in pyrolysis chamber 41, and that may be assisted with the use of a electrical resistance, not shown in the figure, arranged along the duct same.
  • the feeding of the waste through duct 20 is effected by a system of toothed tracks 55 that at the same time compress and push forward the waste that in pyrolysis chamber 41 roll on a first hot deflector 61 and then fall on a movable grid 50 arranged inclined in pyrolysis chamber 41.
  • the feeding system above described causes a considerable reduction of the volume of the waste and reduces the possibility of backfire from pyrolysis chamber 41, making also easier both the steps of semi-combustion of the waste same and a satisfactory measure of the content of carbon in the introduced waste.
  • the content of carbon in the introduced waste is strictly linked to the nature of the waste treated and is a parameter of process of primary importance, on the basis of which the gas flows introduced in the apparatus are then adjusted.
  • ignition means are arranged, for example methane gas burners 25, for bringing the temperature in the chamber to a determined temperature beyond which the system practically is auto-fed and does not require other supply of energy from the outside. Once achieved the determined temperature, in fact, the burner 25 can be deactivated, since the material present in the pyrolysis chamber continues burning for the heat transmitted for conductivity from the combustion chamber. In steady conditions the temperature in the pyrolysis chamber is about 800-900°C and allows to gasify a large part of the material deposited on grid 50, block 102 of figure 2.
  • an compressed air jet 11 and a water vapour jet are directed onto the material at high temperature to create a semiwater gas comprising water gas and air gas, as previously said, according to known reactions.
  • the reaction that causes the production of the air gas is an exothermic reaction i.e. it occurs with release of a certain amount of energy, which is used for the reaction that produces water gas, which is instead an endothermic reaction, i.e. it occurs with absorption of energy.
  • the system can be said as completely auto-fed.
  • the semiwater gas produced as above has a heating power that even if not comparable to that of traditional fuel, is in any case high enough because when burning it an amount can be obtained of energy to cause a further remarkable rise of the temperature.
  • the gas is in part transferred from pyrolysis chamber 41, where it has been just produced, to combustion chamber 42.
  • the semiwater gas can be conveyed, for example, through a duct 21 in which a conveying fluid passes and connecting pyrolysis chamber 41 with combustion chamber 42. More in detail, into duct 21 a conveying fluid current is fed at a suitable speed to cause a suction of the semiwater gas inside, also owing to the expansion of the conveying fluid same that occurs when it reaches combustion chamber 42.
  • duct 21 two channels are arranged, a first channel fed with air with a variable oxygen content according to the process needs, and the second channel fed with a current of vapour.
  • This exemplary embodiment avoids the use of fans or other propelling systems to convey the semiwater gas, with a considerable energy saving and reduction of maintenance costs.
  • the vapour is superheated in a way not shown using the heat of the burnt gas.
  • the partially burnt material present on grid 50 burns in low oxygenated conditions and forms a "brazier" that is repeatedly transferred to combustion chamber 42, block 103. This is made by grid 50 that is moved in the direction indicated by the arrows in the figure.
  • two ducts are provided that end in combustion chamber 42 with two spray nozzles each, one for compressed air and one for oxygen, oriented towards the rear part that carry the gas formed in the high part of pyrolysis chamber 41.
  • sensors can be arranged for measuring parameters of process such as temperature, pressure and carbon content or the amount of unburnt hydrocarbons on the basis of which are the inlet flows are adjusted.
  • the gas produced by the combustion of the material arranged on grid 50 in combustion chamber 42 move upwards and in the higher part of chamber 42 mix with the air and the semiwater gas flowing from pyrolysis chamber 41 and that are burning at high temperature (1200-1400°C).
  • combustion chamber 42 a further air flow is supplied at high temperature through a duct 11.
  • the warm air exits at a diaphragm 62 that divides combustion chamber 42 from a third chamber, or post-combustion chamber 43, crossing combustion chamber 42 in the centre and oxygenating the remaining partially burnt waste in addition to lateral semiwater gas flows.
  • the temperature is further raised up to about 1600°C that provides a substantially total dissociation of the molecules present.
  • the burnt gas comes then to a third chamber, or post-combustion chamber, in which they are further oxygenated by extremely hot air coming from a duct 12.
  • the apparatus 1 for heat treatment of waste can be coupled to systems of reduction of polluting residues.
  • the burnt gas coming from the post-combustion chamber 43 still hot and containing residue particles can be "washed” and cooled further in a scrubber, block 107.
  • a scrubber In the first part of the scrubber any solid or gaseous substances which escaped from dissociation in post-burner 43 are precipitated and captured.
  • the same reactions are repeated as in the first part, but with addition of water and basic reactants, in order to eliminate any residue acid substances.
  • sludge is formed that is then put in the heat treatment cycle for being inertized.
  • the gas can conveyed through a biofilter before being released in the atmosphere, in order to provide to a complete removal of toxic and noxious substances.
  • the action of the biofilter begins with a saturation of the gas, by water vapour, to pass then to the first layer, comprising lignite and organic carbon, in which colonies of specially selected bacteria live. From here the gas passes through second layer, comprising peat, also this containing colonies of specially selected bacteria, different from the previous and that selectively attack other products; in a third and last layer, formed by chips and saw dust of wood, other bacteria are present that together with a catalyst attack any residue possible molecules of furans or dioxins.
  • a system of reduction of any solid residues produced by the apparatus 1 is provided, i.e. the ashes, blocks 104 and 106.
  • the high temperature reached in the apparatus 1, allows melting the ashes that are gathered in reservoir 71 located at combustion chamber 42.
  • the ashes already at high temperature are superheated by jets of water gas and of very hot air, and are conveyed in a crucible with a hole the centre, from which the molten material flows and falls, entrained by a jet of compressed air or vapour, into cold water, creating inert pellets.
  • the molten material is supplied into moulds forming bricks, for example self-locking for pavements or garden pathways. The hardness of the bricks can be adjusted with the addition to the ashes of silica and soda.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Incineration Of Waste (AREA)
EP04425425A 2004-06-10 2004-06-10 Procédé et dipositif pour le traitement à haute température de matériaux combustibles en particulier de déchets Expired - Lifetime EP1607681B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP04425425A EP1607681B1 (fr) 2004-06-10 2004-06-10 Procédé et dipositif pour le traitement à haute température de matériaux combustibles en particulier de déchets
AT04425425T ATE517292T1 (de) 2004-06-10 2004-06-10 Verfahren und vorrichtung zur hochtemperaturbehandelung von brennbarem material insbesondere von abfall
DK04425425.8T DK1607681T3 (da) 2004-06-10 2004-06-10 Fremgangsmåde og apparat til varmebehandling ved høj temperatur af brændbart materiale, navnlig affald
PT04425425T PT1607681E (pt) 2004-06-10 2004-06-10 Método e equipamento para o tratamento térmico a alta temperatura de material combustível em particular resíduos
SI200431763T SI1607681T1 (sl) 2004-06-10 2004-06-10 Postopek in naprava za visokotemperaturno toplotno obdelavo gorljive snovi zlasti odpadkov
PL04425425T PL1607681T3 (pl) 2004-06-10 2004-06-10 Sposób i urządzenie do wysokotemperaturowej obróbki cieplnej palnego materiału, zwłaszcza odpadów
ES04425425T ES2369907T3 (es) 2004-06-10 2004-06-10 Método y aparato para el tratamiento térmico a alta temperatura de material combustible y en particular de desechos.
US11/570,419 US20080282946A1 (en) 2004-06-10 2005-06-03 Method and Apparatus for High Temperature Heat Treatment of Combustible Material in Particular Waste
PCT/EP2005/005996 WO2005121645A1 (fr) 2004-06-10 2005-06-03 Procede et appareil de traitement thermique a temperature elevee d'une matiere combustible dans des dechets particulaires
CA2569886A CA2569886C (fr) 2004-06-10 2005-06-03 Procede et appareil de traitement thermique a temperature elevee d'une matiere combustible dans des dechets particulaires
CY20111100998T CY1112534T1 (el) 2004-06-10 2011-10-20 Μεθοδος και συσκευη για θερμικη επεξεργασια σε υψηλη θερμοκρασια καυσιμου υλικου σε συγκεκριμενα αποβλητα

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EP04425425A EP1607681B1 (fr) 2004-06-10 2004-06-10 Procédé et dipositif pour le traitement à haute température de matériaux combustibles en particulier de déchets

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EP1607681A1 true EP1607681A1 (fr) 2005-12-21
EP1607681B1 EP1607681B1 (fr) 2011-07-20

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US (1) US20080282946A1 (fr)
EP (1) EP1607681B1 (fr)
AT (1) ATE517292T1 (fr)
CA (1) CA2569886C (fr)
CY (1) CY1112534T1 (fr)
DK (1) DK1607681T3 (fr)
ES (1) ES2369907T3 (fr)
PL (1) PL1607681T3 (fr)
PT (1) PT1607681E (fr)
SI (1) SI1607681T1 (fr)
WO (1) WO2005121645A1 (fr)

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FR2929526A1 (fr) * 2008-04-07 2009-10-09 Ghassan Khouri Methode de traitement de materiaux composites
WO2012046258A1 (fr) * 2010-10-08 2012-04-12 Nse Industry S.P.A. Courroie transporteuse de compactage destinée particulièrement à l'alimentation d'installations de pyrolyse, gazéification et combustion
PL422281A1 (pl) * 2017-07-20 2019-01-28 Andrzej Simakowski Kocioł pirolizowy
PL422701A1 (pl) * 2017-08-30 2019-03-11 Filen Spółka Z Ograniczoną Odpowiedzialnością Zgazowarka wysokociśnieniowa i sposób sterowania jej pracą
CN109578975A (zh) * 2018-11-23 2019-04-05 兖矿集团有限公司 一种分级燃烧的燃煤锅炉及其处理方法
CN109578976A (zh) * 2018-11-23 2019-04-05 兖矿集团有限公司 一种节能环保的适用固体燃料的层燃锅炉及其处理方法

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WO2008044216A1 (fr) 2006-10-13 2008-04-17 Proterrgo, Inc. Procédé et appareil pour la gazéification de déchets organiques en lots
AU2010237560B2 (en) * 2009-04-17 2015-09-10 Proterrgo Inc. Method and apparatus for gasification of organic waste
RU2516065C2 (ru) * 2012-07-11 2014-05-20 Михаил Степанович Вигриянов Горелочное устройство
CN107062256A (zh) * 2016-12-16 2017-08-18 贵州西牛王印务有限公司 一种垃圾燃烧用烟气冷却喷淋装置高度调节结构
US20220282865A1 (en) * 2021-03-03 2022-09-08 Steven John Looker Mobile disaster crematory

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WO2012046258A1 (fr) * 2010-10-08 2012-04-12 Nse Industry S.P.A. Courroie transporteuse de compactage destinée particulièrement à l'alimentation d'installations de pyrolyse, gazéification et combustion
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CN109578975A (zh) * 2018-11-23 2019-04-05 兖矿集团有限公司 一种分级燃烧的燃煤锅炉及其处理方法
CN109578976A (zh) * 2018-11-23 2019-04-05 兖矿集团有限公司 一种节能环保的适用固体燃料的层燃锅炉及其处理方法

Also Published As

Publication number Publication date
PT1607681E (pt) 2011-10-24
SI1607681T1 (sl) 2011-11-30
DK1607681T3 (da) 2011-11-14
EP1607681B1 (fr) 2011-07-20
CA2569886C (fr) 2011-10-11
US20080282946A1 (en) 2008-11-20
WO2005121645A1 (fr) 2005-12-22
CY1112534T1 (el) 2015-12-09
ES2369907T3 (es) 2011-12-09
ATE517292T1 (de) 2011-08-15
PL1607681T3 (pl) 2011-12-30
CA2569886A1 (fr) 2005-12-22

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