EP0235473A1 - Process for destroying organic products having toxic properties, and equipment for performing this process - Google Patents
Process for destroying organic products having toxic properties, and equipment for performing this process Download PDFInfo
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- EP0235473A1 EP0235473A1 EP86402425A EP86402425A EP0235473A1 EP 0235473 A1 EP0235473 A1 EP 0235473A1 EP 86402425 A EP86402425 A EP 86402425A EP 86402425 A EP86402425 A EP 86402425A EP 0235473 A1 EP0235473 A1 EP 0235473A1
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- Prior art keywords
- hydrogen
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- combustion
- steam cracking
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/20—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by hydropyrolysis or destructive steam gasification, e.g. using water and heat or supercritical water, to effect chemical change
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- 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
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/22—Organic substances containing halogen
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2203/00—Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
- A62D2203/10—Apparatus specially adapted for treating harmful chemical agents; Details thereof
Definitions
- the present invention relates to a process for destroying organic products with toxic effects avoiding pollution of the surrounding environment after an incident, accident or any other case requiring the decommissioning of these products.
- the invention also relates to installations implementing this method.
- PCBs polychlorinated biphenyls
- WO 82/00509 on a decomposition process using a plasma burner between 3000 and 4000 ° C; - Patent WO 80/022116 on a decomposition process using a molten salt and a source of oxygen; - European patent 0 060 089 on a decomposition process using a reagent comprising a polyglycol and an alkali hydroxide in the presence of oxygen.
- the present invention proposes to avoid these drawbacks and it provides a process for destroying toxic organic molecules without having the risk of the dangers recalled above, in particular of the formation of very toxic degradation products, while minimizing the volume of gas released, this process being characterized by the fact that it comprises as main stage a steam cracking operation.
- this steam cracking is carried out in a reducing medium in the presence of hydrogen.
- the quantity of hydrogen chosen as the reducing medium is between 1 and 1.5 Nm3 / kg of product to be treated.
- the presence of such a reducing medium has the effect of preventing the oxidation of organic products. leading to very toxic dioxin-like by-products in the event of the destruction of a compound of the PCB family.
- reaction temperature is between 1000 and 1500 ° C.
- the process is carried out by injecting superheated steam and oxyhydrogen combustion.
- the quantity of hydrogen necessary for this oxyhydric combustion corresponds to an excess of 2 to 10% compared to the stoichiometric conditions.
- the invention covers any installation comprising a combustion and mixing chamber with admission of hydrogen, oxygen and water vapor; at least one reactor receiving the mixture resulting from such combustion and the product to be treated and, at the outlet of this reactor, stations for condensing and treating the solid, liquid and gaseous reaction products.
- the installation shown in the figure consists of a known diffusion burner 1, a combustion and mixing chamber 2, a reactor 3, a condenser 4, a tank 5 for storing products condensates and an evacuation 17 of the gases to a conventional treatment device not shown.
- the diffusion burner 1 comprises a pipe 6 for injecting hydrogen or nitrogen, a pipe 7 for injecting oxygen or air. These two pipes supply a plurality of diffusers.
- the diffusion burner 1 also comprises a pipe 8 for injecting propane and oxygen supplying the pilot ignition flame and a circuit 9 for supplying water to cool the burner jacket.
- the combustion and mixing chamber 2, placed above the burner 1 and comprising a supply of water vapor 10 modulates the temperature and the residence time.
- the product 11 to be treated is injected, for example pyralene and water vapor 12 serving as carrier gas and steam trap.
- the product 11 is admitted into an ultrasonic resonance injector requiring a make-up fluid, for example water vapor 12, which makes it possible to improve the spraying and thereby the efficiency of the reaction.
- the chamber 2 and the reactor 3 have nozzles 13 and 13a for thermocouples and operating control manometers.
- the condenser 4 has in its upper part an inlet for water 15 ensuring the condensation of the water for cooling the gases and an inlet for a basic product 16 for example dilute sodium hydroxide allowing the neutralization of the hydrochloric gas formed in the case treatment of chlorinated products.
- the operation of the device includes the following steps: - start-up: . purging of the hydrogen line 6 with an inert gas such as nitrogen by dilution under pressure, . establishment of the coolings 9, . establishment of the compressed air flow in the diffusers via the pipe 7, . starting the pilot ignition flame, . establishing the hydrogen flow rate; initially one fifth of the nominal flow, . replacement of compressed air with oxygen in line 7, . adjustment of the hydrogen and oxygen flow rates stochiometrically during a first phase, . introduction of water vapor into chamber 2, . extinction of the pilot flame, . thermal regime for one hour; - reaction: .
- the destruction reaction takes place in the reactor 3, preferably made of a material resistant to the temperature of 1500 ° C., for example refractory stainless steel.
- the product for example pyralene
- the ultrasonic resonance injector used requires an auxiliary fluid, in this case water vapor superheated to 120 ° C by a heating sheath.
- a tap 13 for a thermocouple measures the injection temperature in the reactor, another tap 13a makes it possible to measure the pressure.
- a tap 14 provides a possibility of sampling gases for analysis.
- the hydrogen-oxygen reaction ensures the heat supply of the steam cracking which, by diluting the products with an inert vapor, promotes the decompostion of the molecules; - recovery of liquid, solid and gas discharges: . an injection of water 15 completes the washing of the gases, the injection of dilute sodium hydroxide 16 ensures the neutralization of the hydrochloric gas resulting from the reaction of hydrogen combination on the chlorine released by the destruction of the chlorinated organic products; . a tank 5 allows the storage of condensed liquids while the gases after demistering are directed to a conventional depollution system (not shown) which includes at the outlet a propane-air flare to burn excess hydrogen as well as light hydrocarbons.
- the decomposition by-products include in particular naphthalene, diphenyl, phenanthrene, fluoranthene, heavy hydrocarbons.
- the gases released consist of excess hydrogen and light hydrocarbons: C2 / C3 fraction; these gases are burnt in a flare but can advantageously on large units be used as a heat source for the production of water vapor necessary for the process.
- the present invention has only been described by way of illustration and in no way limiting; in fact, it is capable of receiving various variants coming within its scope and of allowing the treatment of all liquid, gaseous and solid organic products, in particular: - cleaning solvents for pyralene, in particular freon, - products (lubricating oils and other solvents) radioactively contaminated with salts metallic in particular of the cesium and cobalt type, for example scintillation liquids of the 1-5 diphenyloxazol, 1-4 di 2 (5 phenyloxazolyl) benzene, etc. type.
- the sources of hydrogen suitable for carrying out the process can be any, that is to say that the hydrogen can be supplied by an industrial gas (coke oven gas, flue gas ...) or by domestic gas.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Fire-Extinguishing Compositions (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
La présente invention concerne un procédé de destruction de produits organiques à effets toxiques évitant la pollution du milieu environnant après un incident, accident ou tout autre cas nécessitant la mise hors d'usage de ces produits.The present invention relates to a process for destroying organic products with toxic effects avoiding pollution of the surrounding environment after an incident, accident or any other case requiring the decommissioning of these products.
L'invention vise également les installations mettant en oeuvre ce procédé.The invention also relates to installations implementing this method.
De façon plus précise, on fait actuellement appel dans certains domaines le l'industrie à des composés organiques du type, par exemple, polychlorobiphényles (habituellement dénommés PCB) du fait qu'ils présentent des caractéristiques intéressantes et notamment une bonne stabilité thermique, une bonne inertie chimique et une constante diélectrique élevée justifiant de la sorte leur utilisation intensive en particulier comme fluides pour transformateurs et/ou condensateurs.More specifically, use is currently made in certain fields in industry of organic compounds of the type, for example, polychlorinated biphenyls (usually called PCBs) because they have interesting characteristics and in particular good thermal stability, good chemical inertia and a high dielectric constant thus justifying their intensive use in particular as fluids for transformers and / or capacitors.
Cependant, depuis quelques années, des études ont montré que de tels produits ne sont pas biodégradables et qu'on en retrouvait des traces importantes d'accumulation dans le cycle alimentaire. En outre, ces études ont montré une toxicité élevée de ces produits et une activité pouvant être carcinogène. Au vu de ces recherches, les administrations concernées de différents pays ont émis des régles relatives à l'utilisation, au stockage et à la destruction de ces produits. Il en est résulté que différents procédés industriels ont été dès lors mis au point. Ces procédés impliquent pour la plupart un processus d'incinération avec un excès d'air ou d'oxygène dans des dispositifs du type fours de cimenteries ou incinérateurs d'ordures ménagères. C'est ainsi qu'on peut citer :
- le brevet français N° 2.323.432 sur un procédé catalytique de décomposition de composés organiques halogénés ;
- le brevet N° WO 82/00509 sur un procédé de décomposition utilisant un brûleur au plasma entre 3000 et 4000°C ;
- le brevet WO 80/022116 sur un procédé de décomposition utilisant un sel fondu et une source d'oxygène ;
- le brevet européen 0 060 089 sur un procédé de décomposition à l'aide d'un réactif comprenant un polyglycol et un hydroxyde alcalin en présence d'oxygène.However, in recent years, studies have shown that such products are not biodegradable and that there are significant traces of accumulation in the food cycle. In addition, these studies have shown a high toxicity of these products and an activity which may be carcinogenic. In view of this research, the administrations concerned in different countries have issued rules relating to the use, storage and destruction of these products. As a result, various industrial processes have therefore been developed. Most of these processes involve an incineration process with excess air or oxygen in devices such as cement kilns or household waste incinerators. This is how we can cite:
- French patent No. 2,323,432 on a catalytic process for the decomposition of halogenated organic compounds;
- Patent No. WO 82/00509 on a decomposition process using a plasma burner between 3000 and 4000 ° C;
- Patent WO 80/022116 on a decomposition process using a molten salt and a source of oxygen;
- European patent 0 060 089 on a decomposition process using a reagent comprising a polyglycol and an alkali hydroxide in the presence of oxygen.
De tels procédés se sont avérés partiellement efficaces en ce sens qu'ils présentent, lors de leur mise en oeuvre, le principal risque de provoquer la formation de produits de décomposition et de restructuration de la molécule dont on veut obtenir la destruction, qui sont très toxiques et chacun sait les dangers que représente un produit de décomposition du type dioxine dans le cas des PCB, dioxine obtenue par dégradation des molécules chlorées en présence d'oxygène. On citera également la formation très importante de volume de gaz dégagé du type CO₂ et NO₂, ce qui nécessite des installations de traitement correspondantes.Such methods have been found to be partially effective in that they present, during their implementation, the main risk of causing the formation of decomposition and restructuring products of the molecule which it is desired to destroy, which are very toxic and everyone knows the dangers of a dioxin-like decomposition product in the case of PCBs, dioxin obtained by degradation of chlorinated molecules in the presence of oxygen. Mention will also be made of the very large formation of volume of gas released of the CO₂ and NO₂ type, which requires corresponding treatment installations.
Or la présente invention se propose d'éviter ces inconvénients et elle fournit un procédé de destruction de molécules organiques toxiques sans avoir le risque des dangers rappelés ci-dessus, en particulier de formation de produits de dégradation très toxiques, tout en réduisant au minimum le volume de gaz dégagé, ce procédé se caractérisant par le fait qu'il comprend comme étape principale une opération de vapo-craquage.However, the present invention proposes to avoid these drawbacks and it provides a process for destroying toxic organic molecules without having the risk of the dangers recalled above, in particular of the formation of very toxic degradation products, while minimizing the volume of gas released, this process being characterized by the fact that it comprises as main stage a steam cracking operation.
Suivant un mode de réalisation particulièrement avantageux, ce vapo-craquage est effectué en milieu réducteur en présence d'hydrogène.According to a particularly advantageous embodiment, this steam cracking is carried out in a reducing medium in the presence of hydrogen.
Suivant une conduite avantageuse de ce procédé, la quantité d'hydrogène choisie comme milieu réducteur est comprise entre 1 et 1,5 Nm³/kg de produit à traiter. La présence d'un tel milieu réducteur a pour effet de prévenir l'oxydation des produits organiques conduisant à des sous-produits très toxiques du type dioxine dans le cas de la destruction d'un composé de la famille des PCB.According to an advantageous procedure of this process, the quantity of hydrogen chosen as the reducing medium is between 1 and 1.5 Nm³ / kg of product to be treated. The presence of such a reducing medium has the effect of preventing the oxidation of organic products. leading to very toxic dioxin-like by-products in the event of the destruction of a compound of the PCB family.
De façon avantageuse, la température de la réaction est comprise entre 1000 et 1500°C.Advantageously, the reaction temperature is between 1000 and 1500 ° C.
De façon particulière, le procédé est réalisé par une injection de vapeur surchauffée et combustion oxhydrique.In particular, the process is carried out by injecting superheated steam and oxyhydrogen combustion.
Avantageusement la quantité d'hydrogène nécessaire à cette combustion oxhydrique correspond à un excès de 2 à 10 % par rapport aux conditions stoechiométriques.Advantageously, the quantity of hydrogen necessary for this oxyhydric combustion corresponds to an excess of 2 to 10% compared to the stoichiometric conditions.
Ainsi pour la mise en oeuvre de ce procédé, l'invention couvre toute installation comprenant une chambre de combustion et de mélange avec admission d'hydrogène, d'oxygène et de vapeur d'eau ; au moins un réacteur recevant le mélange résultant d'une telle combustion et le produit à traiter et, à la sortie de ce réacteur des postes de condensation et de traitement des produits de réaction solides, liquides et gazeux.Thus, for the implementation of this method, the invention covers any installation comprising a combustion and mixing chamber with admission of hydrogen, oxygen and water vapor; at least one reactor receiving the mixture resulting from such combustion and the product to be treated and, at the outlet of this reactor, stations for condensing and treating the solid, liquid and gaseous reaction products.
D'autres caracteristiques et les avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard de la figure annexée illustrant de façon très schématique une installation mettant en oeuvre le procédé de l'invention.Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with reference to the appended figure, illustrating very schematically an installation implementing the method of the invention.
L'installation représentée sur la figure se compose d'un brûleur de diffusion connu 1, d'une chambre de combustion et de mélange 2, d'un réacteur 3, d'un condenseur 4, d'une cuve 5 de stockage des produits condensés et d'une évacuation 17 des gaz vers un dispositif de traitement classique non représenté.The installation shown in the figure consists of a known diffusion burner 1, a combustion and mixing chamber 2, a
Le brûleur à diffusion 1 comporte une canalisation 6 d'injection d'hydrogène ou d'azote, une canalisation 7 d'injection d'oxygène ou d'air. Ces deux canalisations alimentent une pluralité de diffuseurs. Le brûleur de diffusion 1 comporte également une canalisation 8 d'injection de propane et d'oxygène alimentant la flamme pilote d'allumage et un circuit 9 d'alimentation en eau pour assurer le refroidissement de la chemise du brûleur.The diffusion burner 1 comprises a
La chambre de combustion et de mélange 2, placée au-dessus du brûleur 1 et comportant une alimentation en vapeur d'eau 10 assure la modulation de la température et du temps de séjour.The combustion and mixing chamber 2, placed above the burner 1 and comprising a supply of
Dans le corps du réactor 3 sont réalisées l'injection de produit 11 à traiter par exemple de pyralène et de la vapeur d'eau 12 servant de gaz vecteur et purgeur. Le produit 11 est admis dans un injecteur à résonance ultrasonore nécessitant un fluide d'appoint par exemple de la vapeur d'eau 12, ce qui permet d'améliorer la pulvérisation et par là même l'efficacité de la réaction. La chambre 2 et le réacteur 3 comportent des piquages 13 et 13a pour des thermocouples et manomètres de contrôle de fonctionnement.In the body of the
Le condenseur 4 comporte dans sa partie supérieure une arrivée d'eau 15 assurant la condensation de l'eau de refroidissement des gaz et une arrivée d'un produit basique 16 par exemple de la soude diluée permettant la neutralisation du gaz chlorhydrique formé dans le cas du traitement de produits chlorés.The condenser 4 has in its upper part an inlet for
Le fonctionnement de l'appareil comprend les étapes suivantes :
- mise en route :
. purge de la canalisation 6 d'hydrogène avec un gaz inerte tel que l'azote par dilution sous pression,
. établissement des refroidissements 9,
. établissement du débit d'air comprimé dans les diffuseurs par la canalisation 7,
. mise en route de la flamme pilote d'allumage,
. établissement du débit d'hydrogène ; au départ un cinquième du débit nominal,
. remplacement de l'air comprimé par l'oxygène dans la canalisation 7,
. réglage des débits d'hydrogène et d'oxygène de manière stochiométrique pendant une première phase,
. introduction de la vapeur d'eau dans la chambre 2,
. extinction de la flamme pilote,
. mise en régime thermique pendant une heure;
- réaction :
. La réaction de destruction intervient dans le réacteur 3 réalisé, de préférence, en matériau résistant à la température de 1500°C par exemple de l'acier inox réfractaire. le produit, par exemple le pyralène, est injecté dans une canalisation 11 à l'aide d'une pompe. L'injecteur à résonance ultrasonore utilisé nécessite un fluide auxiliaire, dans le cas présent de la vapeur d'eau surchauffée à 120°C par une gaine chauffante. Un piquage 13 pour un thermocouple mesure la température d'injection dans le réacteur, un autre piquage 13a permet de mesurer la pression. Enfin un piquage 14 assure une possibilité de prélèvement des gaz pour analyses.The operation of the device includes the following steps:
- start-up:
. purging of the
. establishment of the coolings 9,
. establishment of the compressed air flow in the diffusers via the
. starting the pilot ignition flame,
. establishing the hydrogen flow rate; initially one fifth of the nominal flow,
. replacement of compressed air with oxygen in
. adjustment of the hydrogen and oxygen flow rates stochiometrically during a first phase,
. introduction of water vapor into chamber 2,
. extinction of the pilot flame,
. thermal regime for one hour;
- reaction:
. The destruction reaction takes place in the
La réaction hydrogène-oxygène assure l'apport calorifiques du vapo-craquage qui, par dilution des produits par une vapeur inerte, favorise la décompostion des molécules ;
- récupération des rejets liquides, solides et des gaz :
. une injection d'eau 15 complète le lavage des gaz, l'injection de soude diluée 16 assure la neutralisation du gaz chlorhydrique résultant de la réaction de combinaison d'hydrogène sur le chlore libéré par la destruction des produits organiques chlorés ;
. une cuve 5 permet le stockage des liquides condensés tandis que les gaz après dévésiculation sont dirigés vers un système de dépollution classique non représenté qui comporte en sortie une torchère propane-air pour brûler l'excès d'hydrogène ainsi que les hydrocarbures légers.The hydrogen-oxygen reaction ensures the heat supply of the steam cracking which, by diluting the products with an inert vapor, promotes the decompostion of the molecules;
- recovery of liquid, solid and gas discharges:
. an injection of
. a
L'exemple suivant est donné à titre illustratif et nullement limitatif de la présente invention.The following example is given by way of illustration and in no way limits the present invention.
200 g de pyralène utilisé dans les transformateurs contenant 60 % de polychlorobiphényle et 40 % de trichlorobenzène ont été injectés dans le réacteur. Des mesures de chromatographie ont permis de montrer que 99,9985 % du pyralène a été détruit.200 g of pyralene used in the transformers containing 60% polychlorobiphenyl and 40% trichlorobenzene were injected into the reactor. Chromatography measurements made it possible to show that 99.9985% of the pyralene was destroyed.
Les sous-produits de décomposition comprennent notamment du naphtalène, du diphényle, du phénanthrène, du fluoranthène, hydrocarbures lourds.The decomposition by-products include in particular naphthalene, diphenyl, phenanthrene, fluoranthene, heavy hydrocarbons.
Les gaz dégagés se composent d'hydrogène en excès et des hydrocarbures légers : fraction C2/C3 ; ces gaz sont brûlés à la torchère mais peuvent avantageusement sur des unités importantes être utilisés comme source de chaleur en vue de la production de vapeur d'eau nécessaire au procédé.The gases released consist of excess hydrogen and light hydrocarbons: C2 / C3 fraction; these gases are burnt in a flare but can advantageously on large units be used as a heat source for the production of water vapor necessary for the process.
Aucune trace de dioxine n'a été détectée au seuil d'analyses de la méthode soit 2 ppm (parties par million) pour les sous-produits et inférieur à 15 ppt (parties par trillion) pour les eaux de lavage.No trace of dioxin was detected at the method analysis threshold, ie 2 ppm (parts per million) for the by-products and less than 15 ppt (parts per trillion) for the washing water.
La présente invention n'a été décrite qu'à titre illustratif et nullement limitatif ; en effet elle est susceptible de recevoir diverses variantes entrant dans son cadre et de permettre le traitement de tous les produits organiques liquides, gazeux et solides, en particulier :
- des solvants de nettoyage du pyralène en particulier du fréon,
- des produits (huiles de lubrification et autres solvants) contaminés radioactivement par des sels métalliques notamment du type césium et cobalt par exemple des liquides de scintillation du type 1-5 diphényloxazol, 1-4 di 2 (5 phényloxazolyl)benzène, etc... Les ions métalliques formant des chélates, ce procédé décompose ces molécules, assure leur minéralisation et la dissolution des sels métalliques radioactifs qui une fois en phase aqueuse peuvent être alors facilement concentrés et traités par des procédés classiques de l'industrie nucléaire.The present invention has only been described by way of illustration and in no way limiting; in fact, it is capable of receiving various variants coming within its scope and of allowing the treatment of all liquid, gaseous and solid organic products, in particular:
- cleaning solvents for pyralene, in particular freon,
- products (lubricating oils and other solvents) radioactively contaminated with salts metallic in particular of the cesium and cobalt type, for example scintillation liquids of the 1-5 diphenyloxazol, 1-4 di 2 (5 phenyloxazolyl) benzene, etc. type. The metal ions forming chelates, this process breaks down these molecules, ensures their mineralization and dissolution of radioactive metal salts which once in the aqueous phase can then be easily concentrated and treated by conventional methods of the nuclear industry.
Les applications envisagées concernent ainsi le traitement des déchets des industries électriques (transformateurs, condensateurs), chimiques voire nucléaires.The applications envisaged thus relate to the treatment of waste from the electrical industries (transformers, capacitors), chemical or even nuclear.
Par ailleurs, on comprendra aisément que les sources d'hydrogène convenant pour la mise en oeuvre du procédé peuvent être quelconques, c'est-à-dire que l'hydrogène peut être fourni par un gaz industriel (gaz de cokeries, gaz de carneaux...) ou par du gaz domestique.Furthermore, it will be readily understood that the sources of hydrogen suitable for carrying out the process can be any, that is to say that the hydrogen can be supplied by an industrial gas (coke oven gas, flue gas ...) or by domestic gas.
Les quantités admises seront alors bien entendu fonction de la teneur en hydrogène pour satisfaire aux conditions de fonctionnement.The quantities admitted will then of course be a function of the hydrogen content to satisfy the operating conditions.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86402425T ATE47322T1 (en) | 1985-10-30 | 1986-10-29 | PROCEDURE FOR THE PREPARATION OF ORGANIC TOXIC PRODUCTS AND EQUIPMENT FOR CARRYING OUT THE PROCESS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8516133 | 1985-10-30 | ||
FR8516133A FR2589372B1 (en) | 1985-10-30 | 1985-10-30 | PROCESS FOR DESTRUCTION OF ORGANIC PRODUCTS WITH TOXIC EFFECTS AND PLANT FOR CARRYING OUT SAID METHOD |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0235473A1 true EP0235473A1 (en) | 1987-09-09 |
EP0235473B1 EP0235473B1 (en) | 1989-10-18 |
Family
ID=9324361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86402425A Expired EP0235473B1 (en) | 1985-10-30 | 1986-10-29 | Process for destroying organic products having toxic properties, and equipment for performing this process |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0235473B1 (en) |
JP (1) | JPS62127069A (en) |
AT (1) | ATE47322T1 (en) |
AU (1) | AU588390B2 (en) |
CA (1) | CA1289334C (en) |
DE (1) | DE3666354D1 (en) |
ES (1) | ES2011454B3 (en) |
FR (1) | FR2589372B1 (en) |
GR (1) | GR3000228T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2686347A1 (en) * | 1992-01-22 | 1993-07-23 | Lorraine Carbone | FLUID EFFLUENT PYROLYSIS METHOD AND CORRESPONDING DEVICE. |
WO2001024882A1 (en) * | 1999-10-06 | 2001-04-12 | Solvay Fluor Und Derivate Gmbh | Thermal decomposition of halogenated carbon compounds |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3942962A1 (en) * | 1989-12-23 | 1991-06-27 | Kammerer F Gmbh | METHOD FOR DISPOSAL OF SUBSTANCES CONTAINING HALOGENED HYDROCARBON COMPOUNDS OR MIXTURES THEREOF, AND DEVICE FOR CARRYING OUT THE METHOD |
JP4695293B2 (en) * | 2001-05-30 | 2011-06-08 | 株式会社眞誠 | Condensate discharge device for rapid cooling device |
WO2013084324A1 (en) | 2011-12-07 | 2013-06-13 | トヨタ自動車株式会社 | Vehicle body lower structure |
CN113108291B (en) * | 2021-04-22 | 2022-10-18 | 红河州现代德远环境保护有限公司 | Device for pretreating dichloroethane by pyrogenic process |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2323432A1 (en) * | 1975-09-15 | 1977-04-08 | Continental Oil Co | Halogenated organic cpds. decomposition esp. vinyl chloride - by pre-heating prior to oxidation using noble metal catalyst |
WO1982002001A1 (en) * | 1980-12-08 | 1982-06-24 | Vasak Vladimir | Waste disposal |
US4351978A (en) * | 1980-07-21 | 1982-09-28 | Osaka Prefectural Government | Method for the disposal of polychlorinated biphenyls |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5530867B2 (en) * | 1973-01-16 | 1980-08-14 |
-
1985
- 1985-10-30 FR FR8516133A patent/FR2589372B1/en not_active Expired
-
1986
- 1986-10-23 CA CA000521262A patent/CA1289334C/en not_active Expired - Lifetime
- 1986-10-29 EP EP86402425A patent/EP0235473B1/en not_active Expired
- 1986-10-29 AT AT86402425T patent/ATE47322T1/en not_active IP Right Cessation
- 1986-10-29 JP JP61258089A patent/JPS62127069A/en active Pending
- 1986-10-29 AU AU64491/86A patent/AU588390B2/en not_active Ceased
- 1986-10-29 DE DE8686402425T patent/DE3666354D1/en not_active Expired
- 1986-10-29 ES ES86402425T patent/ES2011454B3/en not_active Expired - Lifetime
-
1989
- 1989-11-29 GR GR89400260T patent/GR3000228T3/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2323432A1 (en) * | 1975-09-15 | 1977-04-08 | Continental Oil Co | Halogenated organic cpds. decomposition esp. vinyl chloride - by pre-heating prior to oxidation using noble metal catalyst |
US4351978A (en) * | 1980-07-21 | 1982-09-28 | Osaka Prefectural Government | Method for the disposal of polychlorinated biphenyls |
WO1982002001A1 (en) * | 1980-12-08 | 1982-06-24 | Vasak Vladimir | Waste disposal |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, vol. 82, no. 22, 2 juin 1975, page 153, résumé no. 142517r, Columbus, Ohio, US; & JP-A-74 94 562 (SANYO ELECTRIC CO., LTD) 07-09-1974 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2686347A1 (en) * | 1992-01-22 | 1993-07-23 | Lorraine Carbone | FLUID EFFLUENT PYROLYSIS METHOD AND CORRESPONDING DEVICE. |
EP0553041A1 (en) * | 1992-01-22 | 1993-07-28 | Le Carbone Lorraine | Process and apparatus for the pyrolysis of fluid effluents |
WO2001024882A1 (en) * | 1999-10-06 | 2001-04-12 | Solvay Fluor Und Derivate Gmbh | Thermal decomposition of halogenated carbon compounds |
Also Published As
Publication number | Publication date |
---|---|
JPS62127069A (en) | 1987-06-09 |
EP0235473B1 (en) | 1989-10-18 |
GR3000228T3 (en) | 1991-03-15 |
ES2011454B3 (en) | 1990-01-16 |
ATE47322T1 (en) | 1989-11-15 |
FR2589372A1 (en) | 1987-05-07 |
AU6449186A (en) | 1987-05-07 |
FR2589372B1 (en) | 1988-02-05 |
CA1289334C (en) | 1991-09-24 |
DE3666354D1 (en) | 1989-11-23 |
AU588390B2 (en) | 1989-09-14 |
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