EP0997686B1 - Device for thermal oxidation of solid, gaseous or liquid residues of slaughterhouses - Google Patents
Device for thermal oxidation of solid, gaseous or liquid residues of slaughterhouses Download PDFInfo
- Publication number
- EP0997686B1 EP0997686B1 EP99402660A EP99402660A EP0997686B1 EP 0997686 B1 EP0997686 B1 EP 0997686B1 EP 99402660 A EP99402660 A EP 99402660A EP 99402660 A EP99402660 A EP 99402660A EP 0997686 B1 EP0997686 B1 EP 0997686B1
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- Prior art keywords
- furnace
- burner
- axis
- expressed
- fats
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Classifications
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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
- F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets
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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
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
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- 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
- F23G2202/103—Combustion in two or more stages in separate chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
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- 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
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- 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
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- 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
- F23G2900/50007—Co-combustion of two or more kinds of waste, separately fed into the furnace
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- 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
- F23G2900/52001—Rotary drums with co-current flows of waste and gas
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- 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
- F23G2900/54402—Injecting fluid waste into incinerator
Definitions
- the dehydration and conditioning of the flours produces fumes which are, in fact, the aqueous part of the charge collected in the form of vapor more or less charged with fats carbonated and in highly odorous volatile compounds.
- This vapor phase represents approximately 40% of the initial weight and must be oxidized at high temperature.
- Part of the fat is collected at the outlet of the cooker and another part, after extraction by pressing of the solid residue.
- the solid phase partially dehydrated and defatted, represents 30 to 40% of the incoming charge. Insofar as it comes from contaminated animals declared unfit for recycling in the cattle food chain, it must be incinerated.
- High calorific fats can be used as an auxiliary fuel in the heat treatment device.
- the present invention is based on a oven incinerator type device according to the preamble of claim 1 as described in WO 89/12783.
- the interior of the oven is lined with refractory products, bricks or concrete, to insulate the walls and resist high temperatures.
- the hearth is rotated by means of rollers or by chain and gear.
- Solid waste is introduced at the facade by screw or pusher. It's in also facade which are injected the liquid and gaseous effluents, as well as the combustion air.
- the regular and continuous rotation of the furnace causes the mass of solid waste as soon as it introduction and during combustion in a permanent reversal movement, accompanied by mixing and fractionation of the mass which allows the waste to be exposed, permanently renewed, to the radiation of the refractory lining and to the combustion air, of which depends on the activation of combustion.
- the present invention relates to a device for injecting combustion air, as well as other fluids, which leads to perfect control of the internal aerodynamics of the oven, allows a distribution of the oxygen in the air at the level of the solids load and thereby overcomes the drawbacks and defects of the known devices, linked, as indicated above, to a distribution random combustion air.
- combustion is complete at the outlet of the rotary kiln and the negligible unburnt content, both in gases and in slag.
- the device used consists of a multifluid member, hereinafter designated combustor, whose geometric and energetic characteristics as well as the positioning on the front of the oven constitute the material of the invention.
- the combustor is presented as a multiple inlet and flow injection nozzle parallel, of the tube-in-tube type, which receives all the fluids admitted into the furnace separately, know: liquid or gaseous support fuel, liquid effluents, gaseous effluents, air atomization and combustion air, to inject them in a single jet, strictly flowing axial in the furnace.
- liquid or gaseous support fuel liquid effluents, gaseous effluents, air atomization and combustion air, to inject them in a single jet, strictly flowing axial in the furnace.
- the geometric characteristics of the combustor are dependent on those of the Rotary kiln; as will be explained below.
- the axis of the combustor is offset from the axis of the rotary oven with a distance depending on the diameter of the oven and an angle related to the speed of rotation.
- the device combines a succession of elements whose conjunction achieves the implementation work of the process, as indicated in Figures 1 and 2 attached.
- FIG. 1 shows schematically the device of the invention in longitudinal section.
- the rotary kiln (1) inclined at an angle ⁇ to the horizontal and of internal diameter D, is supplied on the front with solids to be incinerated by the screw (2) and with active fluids by the combustor (3). It opens at the other end into the fixed afterburner (4). Upstream, the solid residues (5) are brought into a storage (6), then distributed by a hopper recovery screw (7) to the screw (2).
- the liquid effluents (8) are stored in the tank (9), then admitted by pumping to the fuel (3).
- the combustor (3) also receives compressible fluids, such as: atomizing air (10), gaseous or mist effluents (11), combustion air (12).
- the slag (13) is collected under the post-combustion chamber (4) and the combustion gases (14) escape at the top towards the treatment of the fumes.
- Figure 2 shows schematically a front view, facade side, of the rotary kiln (1). It specifies the position of the burner (3) and the solid screw (2), as well as the direction of rotation of the oven (1).
- the radial axis of the combustor (3) makes an angle ⁇ relative to the vertical, depending on the oven rotation speed (1).
- this angle is close to 20 °.
- the auxiliary fuel consists of animal fats with high calorific value, extracted during the flour making process.
- the condition G ⁇ 60 W must be fulfilled, that is: G ⁇ 410 Newton.
- the device can be used for other applications which are not outside the scope of the invention.
- the device makes it possible to incinerate gaseous and liquid effluents simultaneously, some of these effluents with appreciable calorific value being able to be used as energy supply of support.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Le secteur technique de l'invention est celui du traitement thermique des résidus produits dans les abattoirs industriels et les unités d'équarrissage.The technical sector of the invention is that of the thermal treatment of the residues produced in industrial slaughterhouses and rendering units.
Les résidus en cause concernent, pour l'essentiel, les produits résultant de la transformation en farines de carcasses d'animaux ou de sous-produits divers, tels que soies de porcs, viscères, os, plumes, etc..., à savoir :
- Les farines impropres à la consommation animale.
- Les graisses et les boues grasses du traitement des effluents de l'usine.
- Les buées de déshydratation et de cuisson.
- Flours unfit for animal consumption.
- Grease and oily sludge from the treatment of plant effluents.
- Dehydration and cooking fumes.
A partir du cadavre d'un bovin, par exemple, qu'il s'agit de traiter dans les règles imposées par la réglementation, les produits à éliminer, mentionnés ci-dessus, sont obtenus dans une chaíne de traitement qui comprend schématiquement les stades suivants :
- Broyage
- Déshydratation dans un cuiseur chauffé à la vapeur
- Pressage et conditionnement des farines
- Grinding
- Dehydration in a steam heated cooker
- Pressing and packaging of flour
La déshydratation et le conditionnement des farines produisent des buées qui sont, en fait, la partie aqueuse de la charge recueillie sous forme de vapeur plus ou moins chargée en graisses gazéifiées et en composés volatils fortement malodorants. Cette phase vapeur représente environ 40 % du poids initial et doit être oxydée à haute température.The dehydration and conditioning of the flours produces fumes which are, in fact, the aqueous part of the charge collected in the form of vapor more or less charged with fats carbonated and in highly odorous volatile compounds. This vapor phase represents approximately 40% of the initial weight and must be oxidized at high temperature.
Une partie des graisses est récupérée à la sortie du cuiseur et une autre partie, après extraction par pressage du résidu solide.Part of the fat is collected at the outlet of the cooker and another part, after extraction by pressing of the solid residue.
La phase solide, partiellement déshydratée et dégraissée, représente de 30 à 40 % de la charge entrante. Dans la mesure où elle provient d'animaux contaminés et déclarés impropres au recyclage dans la chaíne alimentaire pour bétail, elle doit être incinérée.The solid phase, partially dehydrated and defatted, represents 30 to 40% of the incoming charge. Insofar as it comes from contaminated animals declared unfit for recycling in the cattle food chain, it must be incinerated.
Les graisses à fort pouvoir calorifique peuvent être utilisées comme combustible d'appoint dans le dispositif du traitement thermique.High calorific fats can be used as an auxiliary fuel in the heat treatment device.
Bien entendu, la combustion des produits considérés ci-dessus doit s'effectuer en conformité avec les dispositions légales, de plus en plus contraignantes.Of course, the combustion of the products considered above must be carried out in compliance with increasingly stringent legal provisions.
L'objet de la présente invention se rapporte précisément à l'optimisation des conditions de combustion de l'ensemble des résidus en cause.The object of the present invention relates precisely to the optimization of the conditions of combustion of all the residues in question.
Concernant l'art antérieur, différents procédés peuvent être utilisés pour incinérer les produits en cause, au moyen de fours de diverses conceptions, tels que fours à sole tournante, à grilles mécaniques, à lit fluidisé, à pyrolyse, rotatifs, à flamme nue.With regard to the prior art, different methods can be used to incinerate the products in issue, using ovens of various designs, such as rotary hearth ovens, mechanical grids, fluidized bed, pyrolysis, rotary, open flame.
Parmi toutes les technologies possibles, celle du four rotatif faiblement incliné sur l'horizontale prévaut, par exemple décrit dans DE -A-1 551 845 et WO 89/12783.Among all the possible technologies, that of the rotary incline slightly inclined on the horizontal prevails, for example described in DE -A-1,551,845 and WO 89/12783.
La présente invention est basée sur un
dispositif du type incinérateur à four selon
le préambule de la revendication 1 comme décrit dans
le document WO 89/12783.The present invention is based on a
oven incinerator type device according to
the preamble of
Il s'agit d'un four se présentant comme un cylindre allongé, disposé entre une façade fixe côté entrée et une chambre fixe de décendrage côté sortie pour récupération des scories constituées par les parties incombustibles. L'intérieur du four est garni de produits réfractaires, briques ou bétons, pour isoler les parois et résister aux hautes températures. Le foyer est entraíné en rotation au moyen de galets ou par chaíne et roue dentée.It is an oven appearing as an elongated cylinder, arranged between a fixed facade on the inlet side and a fixed ash chamber on the outlet side for recovery of the formed slag by non-combustible parts. The interior of the oven is lined with refractory products, bricks or concrete, to insulate the walls and resist high temperatures. The hearth is rotated by means of rollers or by chain and gear.
Les déchets solides sont introduits au niveau de la façade par vis ou poussoir. C'est en façade également que sont injectés les effluents liquides et gazeux, ainsi que l'air de combustion.Solid waste is introduced at the facade by screw or pusher. It's in also facade which are injected the liquid and gaseous effluents, as well as the combustion air.
La rotation régulière et continue du four entraíne la masse des déchets solides dès leur introduction et pendant la combustion dans un mouvement de retournement permanent, accompagné d'un brassage et d'un fractionnement de la masse qui permet d'exposer les déchets, renouvelés en permanence, au rayonnement du garnissage réfractaire et à l'air comburant dont dépend l'activation de la combustion.The regular and continuous rotation of the furnace causes the mass of solid waste as soon as it introduction and during combustion in a permanent reversal movement, accompanied by mixing and fractionation of the mass which allows the waste to be exposed, permanently renewed, to the radiation of the refractory lining and to the combustion air, of which depends on the activation of combustion.
Selon l'état de l'art, les dispositions concernant la mécanique du four rotatif et l'introduction des résidus sont connues et bien maítrisées. Il n'en est pas de même en ce qui concerne l'admission dans le four de l'air nécessaire à la combustion. Selon les techniques en application à ce jour, l'air est injecté au moyen de tubulures réparties en différents points de la façade. Selon cette façon de procéder, une grande partie de l'air ainsi introduit s'écoule axialement à travers le four sans participer à la combustion. Il s'ensuit une mauvaise utilisation en particulier de la première zone du four et la production d'imbrûlés gazeux, qu'il faut alors rebrûler dans une deuxième chambre fixe, dite de post-combustion, dont les performances risquent également d'être insuffisantes, les normes de rejets imposées devenant difficiles à satisfaire.According to the state of the art, the provisions concerning the mechanics of the rotary kiln and the introduction of residues are known and well controlled. It is not the same with regard to concerns the admission into the oven of the air necessary for combustion. According to the techniques in application to date, air is injected by means of tubes distributed at different points of the facade. According to this procedure, a large part of the air thus introduced flows axially through the furnace without participating in combustion. This results in misuse in particular of the first zone of the oven and the production of unburnt gas, which must then be re-burned in a second fixed chamber, called post-combustion chamber, whose performance may also be insufficient, the imposed discharge standards becoming difficult to meet.
De même, le taux d'imbrûlés solides carbonés dans les scories est généralement supérieur aux limites admises, ce qui oblige à un retraitement onéreux des rejets solides.Likewise, the rate of carbonaceous solid unburned in slag is generally higher with the accepted limits, which obliges an expensive reprocessing of solid discharges.
Les avantages de l'invention seront mieux compris à la lumière des précisions ci-après.The advantages of the invention will be better understood in the light of the details below.
La présente invention se rapporte à un dispositif d'injection de l'air comburant, ainsi que des autres fluides, qui conduit à une parfaite maítrise de l'aérodynamique interne du four, permet une répartition de l'oxygène de l'air au niveau de la charge en solides et pallie de ce fait les inconvénients et défauts des dispositifs connus, liés, comme indiqué ci-dessus, à une répartition aléatoire de l'air de combustion.The present invention relates to a device for injecting combustion air, as well as other fluids, which leads to perfect control of the internal aerodynamics of the oven, allows a distribution of the oxygen in the air at the level of the solids load and thereby overcomes the drawbacks and defects of the known devices, linked, as indicated above, to a distribution random combustion air.
En application de l'invention, la combustion est complète à la sortie du four rotatif et la teneur en imbrûlés négligeable, tant dans les gaz que dans les scories.In application of the invention, combustion is complete at the outlet of the rotary kiln and the negligible unburnt content, both in gases and in slag.
Corrélativement, l'optimisation de la combustion dès l'entrée dans le four se traduit par une homogénéisation des températures, une meilleure utilisation du volume du four et donc un dimensionnement rationnel.Correlatively, the optimization of combustion upon entering the furnace results in homogenization of temperatures, better use of the oven volume and therefore rational sizing.
Le dispositif mis en oeuvre consiste en un organe multifluides, ci-après désigné combusteur, dont les caractéristiques géométriques et énergétiques ainsi que le positionnement sur la façade du four constituent la matière de l'invention.The device used consists of a multifluid member, hereinafter designated combustor, whose geometric and energetic characteristics as well as the positioning on the front of the oven constitute the material of the invention.
Le combusteur se présente comme une canne d'injection à entrées multiples et flux parallèles, du type tubes dans tubes, qui reçoit séparément tous les fluides admis dans le four, à savoir : combustible de soutien liquide ou gazeux, effluents liquides, effluents gazeux, air d'atomisation et air de combustion, pour les injecter en un jet unique, à écoulement strictement axial dans le four. Les caractéristiques géométriques du combusteur sont dépendantes de celles du four rotatif; comme il sera précisé ci-après.The combustor is presented as a multiple inlet and flow injection nozzle parallel, of the tube-in-tube type, which receives all the fluids admitted into the furnace separately, know: liquid or gaseous support fuel, liquid effluents, gaseous effluents, air atomization and combustion air, to inject them in a single jet, strictly flowing axial in the furnace. The geometric characteristics of the combustor are dependent on those of the Rotary kiln; as will be explained below.
Selon le dispositif de l'invention, l'axe du combusteur est décalé par rapport à l'axe du four rotatif d'une distance fonction du diamètre du four et d'un angle lié à la vitesse de rotation.According to the device of the invention, the axis of the combustor is offset from the axis of the rotary oven with a distance depending on the diameter of the oven and an angle related to the speed of rotation.
Le dispositif associe une succession d'éléments dont la conjonction réalise la mise en oeuvre du procédé, comme indiqué sur les figures 1 et 2 annexées.The device combines a succession of elements whose conjunction achieves the implementation work of the process, as indicated in Figures 1 and 2 attached.
La figure 1 schématise le dispositif de l'invention en coupe longitudinale. Le four
rotatif (1), incliné d'un angle α sur l'horizontale et de diamètre intérieur D, est alimenté en façade
en solides à incinérer par la vis (2) et en fluides actifs par le combusteur (3). Il débouche à l'autre
extrémité dans la post-combustion fixe (4). A l'amont les résidus solides (5) sont amenés dans un
stockage (6), puis distribués par une vis de reprise sous trémie (7) vers la vis (2). Les effluents
liquides (8) sont stockés dans la cuve (9), puis admis par pompage au combusteur (3). Le
combusteur (3) reçoit également les fluides compressibles, tels que : air d'atomisation (10),
effluents gazeux ou buées (11), air de combustion (12).
Les scories (13) sont recueillies sous la chambre de post-combustion (4) et les gaz de
combustion (14) s'échappent à la partie supérieure vers le traitement des fumées.Figure 1 shows schematically the device of the invention in longitudinal section. The rotary kiln (1), inclined at an angle α to the horizontal and of internal diameter D, is supplied on the front with solids to be incinerated by the screw (2) and with active fluids by the combustor (3). It opens at the other end into the fixed afterburner (4). Upstream, the solid residues (5) are brought into a storage (6), then distributed by a hopper recovery screw (7) to the screw (2). The liquid effluents (8) are stored in the tank (9), then admitted by pumping to the fuel (3). The combustor (3) also receives compressible fluids, such as: atomizing air (10), gaseous or mist effluents (11), combustion air (12).
The slag (13) is collected under the post-combustion chamber (4) and the combustion gases (14) escape at the top towards the treatment of the fumes.
La figure 2 schématise une vue de face, côté façade, du four rotatif (1). Elle précise la position du combusteur (3) et de la vis à solides (2), ainsi que le sens de rotation du four (1).Figure 2 shows schematically a front view, facade side, of the rotary kiln (1). It specifies the position of the burner (3) and the solid screw (2), as well as the direction of rotation of the oven (1).
Selon les dispositions de l'invention, il existe une relation géométrique entre la position du
combusteur (3) et le diamètre intérieur D du four rotatif (1), qui s'exprime par :
Selon l'invention, l'axe radial du combusteur (3) fait un angle β par rapport à la verticale, fonction de la vitesse de rotation du four (1). Pour les vitesses de rotation habituellement utilisées, cet angle est voisin de 20°. Une des caractéristiques du dispositif de l'invention est donc constituée par un angle β = 20°, les 20° étant comptés dans le sens direct, défini par le sens de rotation du four (1), comme précisé sur la figure 2.According to the invention, the radial axis of the combustor (3) makes an angle β relative to the vertical, depending on the oven rotation speed (1). For the rotation speeds usually used, this angle is close to 20 °. One of the characteristics of the device of the invention is therefore constituted by an angle β = 20 °, the 20 ° being counted in the direct direction, defined by the direction of rotation of the oven (1), as shown in Figure 2.
Toujours selon l'invention, l'ensemble des fluides admis dans le four rotatif(1) est injecté
via le seul combusteur (3), en flux axial pur, c'est à dire sans mise en rotation de l'un quelconque
des fluides en cause et de façon que l'impulsion axiale G de l'ensemble du jet issu du
combusteur (3), vérifie la condition :
G est le débit de quantité de mouvement axial ou poussée de réaction ou impulsion du
combusteur, exprimé en Newton.Still according to the invention, all of the fluids admitted into the rotary kiln (1) are injected via the sole combustor (3), in pure axial flow, that is to say without any of the fluids being put into rotation. in question and in such a way that the axial pulse G of the entire jet coming from the fuel (3), checks the condition:
G is the flow rate of the amount of axial movement or thrust of reaction or pulse of the combustor, expressed in Newton.
Cette dernière relation définit en fait les dimensions du combusteur (3) à mettre en oeuvre pour satisfaire à l'invention, les débits et pressions d'alimentation de chaque fluide étant fixés ou connus.This last relation in fact defines the dimensions of the combustor (3) to be used to satisfy the invention, the flow rates and supply pressures of each fluid being fixed or known.
A titre d'exemple, le dispositif selon l'invention est mis en oeuvre pour l'élimination de résidus organiques provenant d'abattoirs et d'équarrissages. Les résidus en cause sont constitués par :
- 950 Kg/h de farines animales, collectées en service public ou produites pour partie in situ.
- 2500 Kg/h de buées de déshydratation provenant de cuiseurs à vapeur.
- 400 Kg/h de déchets solides divers, tels que soies de porcs, sciures et emballages souillés, boues grasses d'épuration.
- 950 Kg / h of animal meal, collected in public service or partly produced in situ.
- 2500 Kg / h of dehydration mist from steam cookers.
- 400 Kg / h of various solid waste, such as pig bristles, sawdust and soiled packaging, fatty sewage sludge.
Le combustible d'appoint est constitué par les graisses animales à haut pouvoir calorifique, extraites au cours du processus d'élaboration des farines.The auxiliary fuel consists of animal fats with high calorific value, extracted during the flour making process.
Les calculs thermiques conduisent à une puissance développée dans le four rotatif (1) de 6,8 MW et à un diamètre utile de 2100 mm.Thermal calculations lead to a power developed in the rotary kiln (1) of 6.8 MW and with a useful diameter of 2100 mm.
Le combusteur (3) est alors positionné comme indiqué sur la figure 2, avec H = 630 mm et β = 20° C.The combustor (3) is then positioned as shown in Figure 2, with H = 630 mm and β = 20 ° C.
Le débit et la pression des fluides actifs sont :
- Pour l'air de combustion (12) : 9000 Nm3/h à 600 mmCE. (à 6 kPa)
- Pour l'air d'atomisation (10) : 1500 Nm3/h à 700 mbars. (à 70 kPa)
- Pour les buées (11) : 2000 Nm3/h à 100 mmCE. (à 1 kPa)
- For combustion air (12): 9000 Nm 3 / h at 600 mmCE. (at 6 kPa)
- For atomizing air (10): 1500 Nm 3 / h at 700 mbar. (at 70 kPa)
- For mist (11): 2000 Nm 3 / h at 100 mmCE. (at 1 kPa)
Les dimensions du combusteur (3) sont définies en conséquence.The dimensions of the combustor (3) are defined accordingly.
Selon les impératifs de l'invention, la condition G≥ 60 W doit être remplie, soit : G ≥ 410 Newton.According to the requirements of the invention, the condition G≥ 60 W must be fulfilled, that is: G ≥ 410 Newton.
Le calcul de G donne G = 435 N. Les dispositions retenues sont par conséquent conformes à celles requises par l'invention.The calculation of G gives G = 435 N. The provisions adopted are therefore consistent to those required by the invention.
Le dispositif peut être utilisé pour d'autres applications qui ne sortent pas du cadre de l'invention. Ainsi il est possible, selon les dispositions de l'invention, de procéder à l'incinération de solides divers et broyés et introduits en continu dans un four rotatif. On peut citer, par exemple, les déchets hospitaliers, les refus de compost, les boues déshydratées, les emballages, etc...The device can be used for other applications which are not outside the scope of the invention. Thus it is possible, according to the provisions of the invention, to incinerate various solids and ground and introduced continuously into a rotary oven. We can cite, for example, hospital waste, refuse of compost, dehydrated sludge, packaging, etc.
A noter que le dispositif permet d'incinérer simultanément des effluents gazeux et liquides, certains de ces effluents à pouvoir calorifique appréciable pouvant servir d'apport énergétique de soutien.Note that the device makes it possible to incinerate gaseous and liquid effluents simultaneously, some of these effluents with appreciable calorific value being able to be used as energy supply of support.
L'application du dispositif au traitement restrictif de produits exclusivement gazeux et / ou liquides conduit à la mise en oeuvre simplifiée d'un combusteur (3) associé à un four (1) fixe et non rotatif sans sortir du cadre de l'invention, dès lors que la condition G ≥ 60 W est safisfaite. Dans ce cas particulier et en référence aux figures 1 et 2, les grandeurs H, β et α sont égales à zéroApplication of the device to the restrictive treatment of exclusively gaseous products and / or liquids leads to the simplified implementation of a combustor (3) associated with a stationary oven (1) and not rotating without departing from the scope of the invention, provided that the condition G ≥ 60 W is satisfied. In this special case and with reference to Figures 1 and 2, the quantities H, β and α are equal to zero
Claims (5)
- A rotary furnace incinerator type device (1) for the disposal of residues such as animal meal , fats and dehydration condensates, including :a burner (3) that receives all of the active fluids , such as : atomization air (10) , combustion air (12) , an optional secondary fuel, residual condensates (11) , residual fats and liquids (8) and transfers them into the rotary furnace (1) , as a single jet with a strictly axial discharge , parallel to the axis of the furnace (1);a screw (2) for the continuous feeding of crushed solid residues (5) to the furnace (1) ; and the axial impulse G of the burner (3) , expressed in Newton , which is related to the thermal power W of the furnace (1), expressed in MW, by the proviso G ≥ 60 W.
- A device, according to claim 1 , characterized in that the furnace is cylindrical and in that the position of the burner (3) , defined by the height H of its horizontal axis above the rotation axis of the furnace (1) having an internal diameter D , satisfies the proviso H = 0.3 D.
- A device, according to claims 1 and 2 , characterized in that the radial axis of the burner (3) makes an angle β = 20° with the vertical axis , said axes passing through the center of the front face of the furnace (1).
- A fixed furnace incinerator type device (1) for the disposal of residues such as fats and dehydration condensates, characterized by a burner (3) that receives all of the active fluids, such as : atomization air (10) , combustion air (12) , an optional secondary fuel, residual condensates (11), residual fats and liquids (8) and transfers them into the fixed furnace (1) , as a single jet with a strictly axial discharge , parallel to the longitudinal axis of the furnace (1) by the axial impulse G of the burner (3) , expressed in Newton , which is related to the thermal power W of the furnace (1) , expressed in MW , by the proviso G ≥ 60 W .
- A device, according to claim 4 , characterized in that the radial axis of the burner (3) makes an angle β = 0° with the vertical axis , said axes passing through the center of the front face of the furnace (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813676A FR2785366B1 (en) | 1998-10-30 | 1998-10-30 | DEVICE FOR THE THERMAL OXIDATION TREATMENT OF SOLID, LIQUID OR GASEOUS RESIDUES PRODUCED BY SLAUGHTERHOUSES AND RENDERING UNITS |
FR9813676 | 1998-10-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0997686A1 EP0997686A1 (en) | 2000-05-03 |
EP0997686B1 true EP0997686B1 (en) | 2004-09-29 |
Family
ID=9532208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99402660A Expired - Lifetime EP0997686B1 (en) | 1998-10-30 | 1999-10-26 | Device for thermal oxidation of solid, gaseous or liquid residues of slaughterhouses |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0997686B1 (en) |
AT (1) | ATE278157T1 (en) |
DE (1) | DE69920625D1 (en) |
FR (1) | FR2785366B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248041A3 (en) * | 2001-04-04 | 2002-12-18 | Adolfo Fernandez Mesa | Thermal annihilation process |
CN105716093B (en) * | 2016-03-14 | 2017-10-03 | 哈尔滨工业大学 | It is a kind of to handle the melting plant of polymorphic hazardous waste simultaneously |
CN109708125A (en) * | 2019-02-14 | 2019-05-03 | 长沙中硅水泥技术开发有限公司 | A kind of processing arsenic alkaline slag and low-melting heavy metal waste residue combined type smelting furnace |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4797087A (en) * | 1985-07-15 | 1989-01-10 | American Combustion, Inc. | Method and apparatus for generating highly luminous flame |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH409210A (en) * | 1964-06-05 | 1966-03-15 | Keller Otto | Incinerator for waste products |
DE1551845A1 (en) * | 1967-07-01 | 1970-04-23 | Keller Peukert Gmbh | Rotary drum waste incineration plant |
FR2605715B1 (en) * | 1986-10-23 | 1989-12-01 | Tunzini Nessi Entreprises Equi | INDUSTRIAL WASTE INCINERATION DEVICE |
EP0419463A4 (en) * | 1988-06-17 | 1992-08-19 | American Combustion, Inc. | A method and apparatus for waste disposal |
US5188042A (en) * | 1991-04-18 | 1993-02-23 | Praxair Technology, Inc. | Fluid waste burner system |
US5724901A (en) * | 1995-11-02 | 1998-03-10 | Gaz Metropolitan And Company Limited | Oxygen-enriched gas burner for incinerating waste materials |
-
1998
- 1998-10-30 FR FR9813676A patent/FR2785366B1/en not_active Expired - Fee Related
-
1999
- 1999-10-26 DE DE69920625T patent/DE69920625D1/en not_active Expired - Fee Related
- 1999-10-26 AT AT99402660T patent/ATE278157T1/en not_active IP Right Cessation
- 1999-10-26 EP EP99402660A patent/EP0997686B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4797087A (en) * | 1985-07-15 | 1989-01-10 | American Combustion, Inc. | Method and apparatus for generating highly luminous flame |
Also Published As
Publication number | Publication date |
---|---|
FR2785366B1 (en) | 2001-02-23 |
EP0997686A1 (en) | 2000-05-03 |
FR2785366A1 (en) | 2000-05-05 |
DE69920625D1 (en) | 2004-11-04 |
ATE278157T1 (en) | 2004-10-15 |
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