EP0042331A1 - Process for the treatment of aqueous wastes containing organic substances and mineral salts - Google Patents
Process for the treatment of aqueous wastes containing organic substances and mineral salts Download PDFInfo
- Publication number
- EP0042331A1 EP0042331A1 EP81400925A EP81400925A EP0042331A1 EP 0042331 A1 EP0042331 A1 EP 0042331A1 EP 81400925 A EP81400925 A EP 81400925A EP 81400925 A EP81400925 A EP 81400925A EP 0042331 A1 EP0042331 A1 EP 0042331A1
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- EP
- European Patent Office
- Prior art keywords
- oven
- burner
- towards
- angle
- effluent
- 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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- 150000003839 salts Chemical class 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 9
- 239000011707 mineral Substances 0.000 title claims abstract description 9
- 239000000126 substance Substances 0.000 title abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 2
- 239000010815 organic waste Substances 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229930182817 methionine Natural products 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Images
Classifications
-
- 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
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- 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
- F23G7/008—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste
Definitions
- the present invention relates to a process for the treatment of aqueous effluents containing organic matter and possibly mineral salts in solution with a view to eliminating the organic substances and optionally recovering the mineral salts of a sufficient quality to allow the recovery and the marketing.
- the invention relates to a process for treating aqueous effluents containing a high level of organic matter (of the order of 10%) and of mineral salts (generally between 15 and 30%).
- Incinerator ovens of this type do not always function satisfactorily and the salts recovered are greyish and not marketable. This poor efficiency is due to the fact that, taking into account the design of the furnace, the burning temperature cannot be increased without risk of blockage.
- a temperature close to 850 ° C. necessary for the destruction of almost all of the organic matter, cannot be reached because at this temperature , the salt melts and a kind of meringue forms on the wall which gradually accumulating leads to blockage of the oven.
- the end of the central injector must be located in such a way that the spray jet falls directly into the flame; its position relative to the burners is therefore defined by the spray angle.
- the effluent undergoes combustion in the zone delimited by the end of the injector and of the burners, then it necessarily passes through the flame which constitutes an overheated zone in which the combustion is perfect.
- the turbulence created pushes the combustion products towards the center of the oven, thus avoiding the annoying deposit of salt on the wall.
- the combustion temperature can be significantly higher than the salt melting temperature.
- a vacuum is created inside the oven, the evacuation orifice being located in the lower part of the oven.
- the injector causing the aqueous effluent to burn can consist of two concentric tubes.
- the aqueous effluent circulates in the central tube and in the external annular tube circulates air possibly compressed: the effluent is thus pulverized by the orifice of the injector.
- the burners located in the upper part of the oven towards the periphery are of the conventional type and they can be powered by liquid or gaseous fuels. Generally three burners, arranged in a star, at 120 °, and oriented towards the base of the oven, are used. 0
- An incinerator used for the implementation of the present invention is particularly advantageous for burning aqueous effluents containing organic substances whose thermal stability is high and more particularly aqueous effluents from the preparation of methionine.
- the mother liquors from the production of methionine contain on average 20% by weight of sodium sulfate and 10% by weight of organic matter.
- the ignition temperature is close to 700 ° C. but the optimal combustion temperature is situated in the vicinity of 900 ° C., a higher temperature does not bring a significant improvement in the desired result.
- the aqueous effluent must be sprayed, possibly under pressure (for example 10 bars), in the presence of an excess of air close to or greater than 30%.
- the residence time in the incinerator defined by the ratio of the volume of the combustion zone to the air flow rate is close to 3 seconds, a longer residence time not bringing a significant improvement in the result and a time shorter stay, close to 1.5 seconds, leading to insufficient quality salt.
- the cooling of the fumes is ensured by the water vapor obtained and it is improved by the addition of air cooling in order to further decrease the level of unburned organic substances.
- an incinerator according to the present invention may have 3 to 4 m in diameter for a height of between 10 and 15 m. Equipped with 3 crown burners with a total heating capacity of 10,000 therms / h, at 120 ° from each other, oriented in such a way that the axis of a burner, the end of which is located at a distance of the axis of the furnace close to a third of its diameter, is directed towards the projection of the end of the neighboring burner on a plane, perpendicular to the axis of the furnace, located at a distance from the end of the burners approximately double the diameter of the furnace, supplied with liquid or gaseous fuel, the aqueous effluent being sprayed into the flame at an angle close to 90 °, such an incinerator makes it possible to burn 3 to 6 tonnes per hour of aqueous effluents.
- the present invention also relates to an incinerator oven for implementing the process for treating aqueous effluents as described above.
- Figures 1 and 2 give the diagrams of an incinerator oven according to the present invention.
- points A, B, C represent the orifices of the burners and the points A ', B', C 'represent the projections of the orifices of the burners on a plane perpendicular to the axis of the oven of diameter D.
- the point of impact of the axis of the burner A is the point B', that of B point C 'and that of C point A'.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Gasification And Melting Of Waste (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
- Processing Of Solid Wastes (AREA)
- Incineration Of Waste (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Procédé de traitement d'effluents aqueux contenant des substances organiques et éventuellement des sels minéraux par combustion dans un four incinérateur. L'effluent est pulvérisé par l'intermédiaire d'un injecteur au sommet du four dans la flamme des brûleurs à combustible liquide ou gazeux, situés vers la partie supérieure du four, disposés presque tangentiellement au périmètre du four et incliné vers la base du four pour créer une turbulence entraînant le sel vers le centre et évitant son dépôt sur les parois.Process for treating aqueous effluents containing organic substances and possibly mineral salts by combustion in an incinerator oven. The effluent is sprayed via an injector at the top of the furnace into the flame of liquid or gaseous fuel burners, located towards the upper part of the furnace, arranged almost tangentially to the perimeter of the furnace and inclined towards the base of the furnace. to create turbulence driving the salt towards the center and avoiding its deposit on the walls.
Description
La présente invention concerne un procédé de traitement d'effluents aqueux contenant en solution des matières organiques et éventuellement des sels minéraux en vue d'éliminer les substances organiques et de récupérer éventuellement les sels minéraux d'une qualité suffisante pour en permettre la valorisation et la commercialisation.The present invention relates to a process for the treatment of aqueous effluents containing organic matter and possibly mineral salts in solution with a view to eliminating the organic substances and optionally recovering the mineral salts of a sufficient quality to allow the recovery and the marketing.
Plus particulièrement, l'invention concerne un procédé de traitement d'effluents aqueux contenant un taux élevé de matières organiques (de l'ordre de 10 %) et de sels minéraux (généralement compris entre 15 et 30 %).More particularly, the invention relates to a process for treating aqueous effluents containing a high level of organic matter (of the order of 10%) and of mineral salts (generally between 15 and 30%).
Dans ce cas, le traitement de tels effluents est d'autant plus difficile que la teneur en sels minéraux est plus élevée et que la stabilité des matières organiques résiduelles est plus grande.In this case, the treatment of such effluents is all the more difficult the higher the mineral salt content and the greater the stability of the residual organic materials.
Il est connu de soumettre des effluents aqueux du type ci-dessus à une combustion dans un incinérateur constitué d'un four cylindrique vertical dans la partie supérieure duquel se trouve l'orifice d'un brûleur de combustible liquide ou gazeux et dans les parois duquel, vers l'extrémité supérieure, se trouvent les orifices des injecteurs amenant l'effluent à traiter au niveau de la flamme.It is known to subject aqueous effluents of the above type to combustion in an incinerator consisting of a vertical cylindrical furnace in the upper part of which is the orifice of a liquid or gaseous fuel burner and in the walls of which , towards the upper end, are the orifices of the injectors bringing the effluent to be treated to the level of the flame.
Des fours équipés de brûleurs mixtes formés de trois tubes concentriques dans lesquels arrivent les eaux polluées, le combustible et l'air comburant sont également utilisés.Ovens equipped with combi burners formed by three concentric tubes into which the polluted water, fuel and combustion air arrive are also used.
Des fours incinérateurs de ce type n'ont pas toujours un fonctionnement satisfaisant et les sels récupérés sont grisâtres et non commercialisables. Cette mauvaise efficacité est due au fait, que, compte tenu de la conception du four, la température de brûlage ne peut être augmentée sans risque de bouchage. Ainsi, lorsque l'on utilise un effluent aqueux contenant du sulfate de sodium en tant que sel minéral , une température voisine de 850°C, nécessaire pour la destruction de la quasi-totalité des matières organiques, ne peut être atteinte car à cette température, le sel fond et il se forme sur la paroi une sorte de meringue qui progressivement en s'accumulant conduit au bouchage du four. Pour éviter cet inconvénient, il est possible d'envisager une combustion à plus basse température c'est-à-dire au voisinage de 720°C. Cependant, à cette température, la combustion des composants organiques de l'effluent est incomplète et le sel récupéré est souillé de particules de suie qui le rendent inutilisable. Par ailleurs, compte tenu de l'angle de pulvérisation de chaque injecteur, une partie de l'effluent pulvérisé tombe directement sur la paroi du four provoquant et favorisant le dépôt du sel.Incinerator ovens of this type do not always function satisfactorily and the salts recovered are greyish and not marketable. This poor efficiency is due to the fact that, taking into account the design of the furnace, the burning temperature cannot be increased without risk of blockage. Thus, when an aqueous effluent containing sodium sulphate is used as the mineral salt, a temperature close to 850 ° C., necessary for the destruction of almost all of the organic matter, cannot be reached because at this temperature , the salt melts and a kind of meringue forms on the wall which gradually accumulating leads to blockage of the oven. To avoid this drawback, it is possible to envisage combustion at a lower temperature, that is to say in the vicinity of 720 ° C. However, at this temperature, the combustion of the organic components of the effluent is incomplete and the recovered salt is contaminated with soot particles which render it unusable. Furthermore, given the spray angle of each injector, part of the sprayed effluent falls directly on the wall of the furnace causing and promoting the deposition of salt.
Il a maintenant été trouvé, et c'est ce qui fait l'objet de la présente invention, que la combustion peut être nettement améliorée et que le dépôt du sel fondu sur la paroi du four peut être notablement diminué en modifiant le système d'injection, en augmentant la turbulence et en favorisant le contact du flux chaud avec l'effluent à traiter.It has now been found, and this is the object of the present invention, that the combustion can be markedly improved and that the deposition of the molten salt on the wall of the oven can be significantly reduced by modifying the system of injection, increasing turbulence and promoting contact of the hot flow with the effluent to be treated.
Selon la présente invention, le brûlage des effluents aqueux est effectué dans un four vertical cylindrique dans lequel L'effluent aqueux est injecté dans la zone de combustion par un injecteur dont l'extrémité est située au centre de la partie supérieure du four, qui est de préférence conique et dans lequel les brûleurs sont disposés presque tangentiellement au périmètre du four et sont inclinés vers la base. Plus particulièrement, les brûleurs sont disposés symétriquement à la partie supérieure du four et la projection de leurs orifices sur un plan perpendiculaire l'axe du four se trouve à l'intérieur d'une couronne dont le rayon est compris entre le rayon et la moitié du rayon du four. Les brûleurs sont orientés dans un plan horizontal et dans un plan vertical. L'orientation est définie :
- - par l'angle dièdre formé par le demi-plan vertical passant par L'axe du brûleur et par le demi-plan vertical passant par l'axe du four et l'orifice du brûleur, cet angle étant généralement compris antre 120 et 160° , et le prolongement de l'axe du brûleur étant tangent à un cylindre vertical fictif dont le rayon est au moins 0,35 fois celui du rayon du four, et
- - par l'angle d'inclinaison du brûleur vers le bas, cet angle avec La verticale étant généralement compris entre 10 et 60°.
- - by the dihedral angle formed by the vertical half-plane passing through the axis of the burner and by the vertical half-plane passing through the axis of the furnace and the orifice of the burner, this angle generally being between 120 and 160 °, and the extension of the burner axis being tangent to a fictitious vertical cylinder whose radius is at least 0.35 times that of the radius of the furnace, and
- - by the angle of inclination of the burner downwards, this angle with the vertical being generally between 10 and 60 °.
L'extrémité de l'injecteur central doit être située de telle manière que le jet pulvérisé tombe directement dans la flamme ; sa position par rapport aux brûleurs est donc définie par l'angle de pulvérisation. L'effluent subit une combustion dans la zone délimitée par l'extrémité de l'injecteur et des brûleurs, puis il traverse obligatoirement la flamme qui constitue une zone surchauffée dans laquelle la combustion se parfait. Par ailleurs, en orientant les brûleurs comme indiqué ci-dessus, la turbulence créée refoule les produits de combustion vers le centre du four évitant ainsi le dépôt gênant du sel sur la paroi. En utilisant un tel système, la température de combustion peut être nettement supérieure à la température de fusion du sel.The end of the central injector must be located in such a way that the spray jet falls directly into the flame; its position relative to the burners is therefore defined by the spray angle. The effluent undergoes combustion in the zone delimited by the end of the injector and of the burners, then it necessarily passes through the flame which constitutes an overheated zone in which the combustion is perfect. Furthermore, by orienting the burners as indicated above, the turbulence created pushes the combustion products towards the center of the oven, thus avoiding the annoying deposit of salt on the wall. Using such a system, the combustion temperature can be significantly higher than the salt melting temperature.
Pour favoriser l'évacuation des fumées qui entraînent le sel, il est créé une dépression à l'intérieur du four, l'orifice d'évacuation étant situé dans la partie basse du four.To promote the evacuation of the fumes which carry the salt, a vacuum is created inside the oven, the evacuation orifice being located in the lower part of the oven.
L'injecteur amenant l'effluent aqueux à brûler peut être constitué de deux tubes concentriques. L'effluent aqueux circule dans le tube central et dans le tube annulaire extérieur circule de l'air éventuellement comprimé : l'effluent est ainsi pulvérisé par l'orifice de l'injecteur.The injector causing the aqueous effluent to burn can consist of two concentric tubes. The aqueous effluent circulates in the central tube and in the external annular tube circulates air possibly compressed: the effluent is thus pulverized by the orifice of the injector.
Les brûleurs situés dans la partie supérieure du four vers la périphérie sont de type classique et ils peuvent être alimentés par des combustibles liquides ou gazeux. Généralement trois brûleurs, disposés en étoile, à 120°, et orientés vers la base du four, sont utilisés. 0 The burners located in the upper part of the oven towards the periphery are of the conventional type and they can be powered by liquid or gaseous fuels. Generally three burners, arranged in a star, at 120 °, and oriented towards the base of the oven, are used. 0
Un incinérateur utilisé pour la mise en oeuvre de la présente invention est particulièrement intéressant pour brûler les effluents aqueux contenant des substances organiques dont la stabilité thermique est élevée et plus particulièrement les effluents aqueux issus de la préparation de la méthionine. Les eaux-mères provenant de la fabrication de la méthionine contiennent en moyenne 20 % en poids de sulfate de sodium et 10 % en poids de matières organiques.An incinerator used for the implementation of the present invention is particularly advantageous for burning aqueous effluents containing organic substances whose thermal stability is high and more particularly aqueous effluents from the preparation of methionine. The mother liquors from the production of methionine contain on average 20% by weight of sodium sulfate and 10% by weight of organic matter.
Avec un effluent de ce type, la température d'inflammation est voisine de 700°C mais la température optimale de la combustion se situe au voisinage de 900°C, une température supérieure n'apportant pas une amélioration sensible du résultat recherché.With an effluent of this type, the ignition temperature is close to 700 ° C. but the optimal combustion temperature is situated in the vicinity of 900 ° C., a higher temperature does not bring a significant improvement in the desired result.
L'effluent aqueux doit être pulvérisé, éventuellement sous pression (par exemple 10 bars), en présence d'un excès d'air voisin de ou supérieur à 30 %.The aqueous effluent must be sprayed, possibly under pressure (for example 10 bars), in the presence of an excess of air close to or greater than 30%.
Le temps de séjour dans l'incinérateur, défini par le rapport du volume de la zone de combustion au débit de l'air est voisin de 3 secondes, un temps de séjour plus long n'apportant pas une amélioration sensible du résultat et un temps de séjour plus court, voisin de 1,5 secondes conduisant à l'obtention d'un sel de qualité insuffisante.The residence time in the incinerator, defined by the ratio of the volume of the combustion zone to the air flow rate is close to 3 seconds, a longer residence time not bringing a significant improvement in the result and a time shorter stay, close to 1.5 seconds, leading to insufficient quality salt.
Il est particulièrement avantageux d'introduire la totalité de l'air comburant au sommet de la chambre de combustion de façon à améliorer l'efficacité du brûlage.It is particularly advantageous to introduce all of the combustion air at the top of the combustion chamber so as to improve the efficiency of the burning.
Le refroidissement des fumées est assuré par la vapeur d'eau obtenue et il est amélioré par adjonction d'un refroidissement par l'air afin de diminuer encore le taux des substances organiques non brûlées.The cooling of the fumes is ensured by the water vapor obtained and it is improved by the addition of air cooling in order to further decrease the level of unburned organic substances.
A titre indicatif et non limitatif, un incinérateur selon la présente invention peut avoir 3 à 4 m de diamètre pour une hauteur comprise entre 10 et 15 m. Equipé de 3 brûleurs en couronne d'une capacité totale de chauffe de 10 000 thermies/h, à 120° les uns des autres, orientés de telle manière que l'axe d'un brûleur, dont l'extrémité est située à une distance de l'axe du four voisine du tiers de son diamètre, est dirigé vers la projection de l'extrémité du brûleur voisin sur un plan, perpendiculaire à l'axe du four, situé à une distance de l'extrémité des brûleurs approximativement double du diamètre du four, alimentés en combustible liquide ou gazeux, l'effluent aqueux étant pulvérisé dans la flamme sous un angle voisin de 90°, un tel incinérateur permet de brûler 3 à 6 tonnes par heure d'effluents aqueux.As an indication and without limitation, an incinerator according to the present invention may have 3 to 4 m in diameter for a height of between 10 and 15 m. Equipped with 3 crown burners with a total heating capacity of 10,000 therms / h, at 120 ° from each other, oriented in such a way that the axis of a burner, the end of which is located at a distance of the axis of the furnace close to a third of its diameter, is directed towards the projection of the end of the neighboring burner on a plane, perpendicular to the axis of the furnace, located at a distance from the end of the burners approximately double the diameter of the furnace, supplied with liquid or gaseous fuel, the aqueous effluent being sprayed into the flame at an angle close to 90 °, such an incinerator makes it possible to burn 3 to 6 tonnes per hour of aqueous effluents.
La présente invention concerne également un four incinérateur pour la mise en oeuvre du procédé de traitement des effluents aqueux tel qu'il est décrit précédemment.The present invention also relates to an incinerator oven for implementing the process for treating aqueous effluents as described above.
Les figures 1 et 2 donnent les schémas de réalisation d'un four incinérateur selon la présente invention. Dans la figure 2, les points A, B, C représentent les orifices des brûleurs et les points A', B', C' représentent les projections des orifices des brûleurs sur un plan perpendiculaire à l'axe du four de diamètre D. Le point d'impact de l'axe du brûleur A est le point B', celui de B le point C' et celui de C le point A'.Figures 1 and 2 give the diagrams of an incinerator oven according to the present invention. In figure 2, points A, B, C represent the orifices of the burners and the points A ', B', C 'represent the projections of the orifices of the burners on a plane perpendicular to the axis of the oven of diameter D. The point of impact of the axis of the burner A is the point B', that of B point C 'and that of C point A'.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT81400925T ATE6385T1 (en) | 1980-06-13 | 1981-06-11 | PROCESS FOR TREATMENT OF WASTEWATER CONTAINING ORGANIC SUBSTANCES AND MINERAL SALTS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8013165 | 1980-06-13 | ||
| FR8013165A FR2484609A1 (en) | 1980-06-13 | 1980-06-13 | PROCESS FOR THE TREATMENT OF AQUEOUS EFFLUENTS CONTAINING ORGANIC SUBSTANCES AND MINERAL SALTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0042331A1 true EP0042331A1 (en) | 1981-12-23 |
| EP0042331B1 EP0042331B1 (en) | 1984-02-22 |
Family
ID=9243066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81400925A Expired EP0042331B1 (en) | 1980-06-13 | 1981-06-11 | Process for the treatment of aqueous wastes containing organic substances and mineral salts |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US4425856A (en) |
| EP (1) | EP0042331B1 (en) |
| JP (1) | JPS5727190A (en) |
| AT (1) | ATE6385T1 (en) |
| AU (1) | AU528493B2 (en) |
| BR (1) | BR8103753A (en) |
| CA (1) | CA1173300A (en) |
| DE (1) | DE3162364D1 (en) |
| DK (1) | DK258781A (en) |
| ES (1) | ES503005A0 (en) |
| FI (1) | FI811836L (en) |
| FR (1) | FR2484609A1 (en) |
| IE (1) | IE51231B1 (en) |
| NO (1) | NO811996L (en) |
| PT (1) | PT73183B (en) |
| ZA (1) | ZA813949B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698156A1 (en) * | 1992-11-16 | 1994-05-20 | Rhone Poulenc Chimie | A method of heat treating an effluent comprising polluting organic material or an inorganic compound. |
| EP0652403A1 (en) * | 1993-11-05 | 1995-05-10 | Heurbel S.A. | Improvements to incinerators for liquids, having one or more oxy-fuel burners |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4668435A (en) * | 1982-12-20 | 1987-05-26 | Rockwell International Corporation | Thermal conversion of wastes |
| US4940519A (en) * | 1988-06-27 | 1990-07-10 | Dames Robert G | Detoxification apparatus and method for toxic waste using laser energy and electrolysis |
| US5126020A (en) * | 1988-06-27 | 1992-06-30 | Dames Robert G | Detoxification apparatus and method for toxic waste using an energy beam and electrolysis |
| US5484279A (en) * | 1993-03-22 | 1996-01-16 | Emcon, Inc. | Method and apparatus for disposal of landfill gas condensate |
| US5948373A (en) * | 1995-10-16 | 1999-09-07 | Corporation De L'ecole Polytechnique | Free radical oxidation installation for treating liquid effluents contaminated by organic substances |
| US5641412A (en) * | 1995-10-16 | 1997-06-24 | Guy; Christophe | Free radical oxidation process and installation for treating liquid effluents contaminated by organic substances |
| JP3807855B2 (en) * | 1998-11-02 | 2006-08-09 | ユニ・チャーム株式会社 | Absorbent articles |
| JP2004351320A (en) * | 2003-05-29 | 2004-12-16 | Sumitomo Chem Co Ltd | Wastewater treatment process |
| US7909601B2 (en) * | 2006-01-24 | 2011-03-22 | Exxonmobil Chemical Patents Inc. | Dual fuel gas-liquid burner |
| US8075305B2 (en) * | 2006-01-24 | 2011-12-13 | Exxonmobil Chemical Patents Inc. | Dual fuel gas-liquid burner |
| US7901204B2 (en) * | 2006-01-24 | 2011-03-08 | Exxonmobil Chemical Patents Inc. | Dual fuel gas-liquid burner |
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|---|---|---|---|---|
| GB950345A (en) * | 1960-11-04 | 1964-02-26 | Basf Ag | Oxidation of carbonaceous substances suspended or dissolved in a liquid resistant to oxidation |
| FR2204781A1 (en) * | 1972-10-26 | 1974-05-24 | Lucas Furnace Dev Ltd | |
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| US3861330A (en) * | 1974-03-13 | 1975-01-21 | Trane Co | Incinerator for aqueous waste material |
| FR2283096A1 (en) * | 1974-08-28 | 1976-03-26 | Ok Bjuro | Sludge incinerator for organic and mineral compounds - atomises the liquid and fuses mineral content in cyclone reactor |
| GB2017281A (en) * | 1978-03-23 | 1979-10-03 | Asahi Engineering | Method and apparatus for treating water solution of waste material containing salt having smelt-water explosion characteristics |
| WO1980000741A1 (en) * | 1978-10-04 | 1980-04-17 | K Konrad | Method and apparatus for processing waste fluid |
-
1980
- 1980-06-13 FR FR8013165A patent/FR2484609A1/en active Granted
-
1981
- 1981-01-12 DK DK258781A patent/DK258781A/en not_active Application Discontinuation
- 1981-06-10 AU AU71472/81A patent/AU528493B2/en not_active Ceased
- 1981-06-10 US US06/272,280 patent/US4425856A/en not_active Expired - Fee Related
- 1981-06-11 DE DE8181400925T patent/DE3162364D1/en not_active Expired
- 1981-06-11 EP EP81400925A patent/EP0042331B1/en not_active Expired
- 1981-06-11 AT AT81400925T patent/ATE6385T1/en not_active IP Right Cessation
- 1981-06-11 IE IE1299/81A patent/IE51231B1/en unknown
- 1981-06-11 ZA ZA813949A patent/ZA813949B/en unknown
- 1981-06-11 BR BR8103753A patent/BR8103753A/en unknown
- 1981-06-12 FI FI811836A patent/FI811836L/en not_active Application Discontinuation
- 1981-06-12 CA CA000379698A patent/CA1173300A/en not_active Expired
- 1981-06-12 ES ES503005A patent/ES503005A0/en active Granted
- 1981-06-12 NO NO811996A patent/NO811996L/en unknown
- 1981-06-12 PT PT73183A patent/PT73183B/en unknown
- 1981-06-12 JP JP8974281A patent/JPS5727190A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950345A (en) * | 1960-11-04 | 1964-02-26 | Basf Ag | Oxidation of carbonaceous substances suspended or dissolved in a liquid resistant to oxidation |
| FR2204781A1 (en) * | 1972-10-26 | 1974-05-24 | Lucas Furnace Dev Ltd | |
| FR2213458A1 (en) * | 1973-01-08 | 1974-08-02 | Ghelfi Ag | |
| US3861330A (en) * | 1974-03-13 | 1975-01-21 | Trane Co | Incinerator for aqueous waste material |
| FR2283096A1 (en) * | 1974-08-28 | 1976-03-26 | Ok Bjuro | Sludge incinerator for organic and mineral compounds - atomises the liquid and fuses mineral content in cyclone reactor |
| GB2017281A (en) * | 1978-03-23 | 1979-10-03 | Asahi Engineering | Method and apparatus for treating water solution of waste material containing salt having smelt-water explosion characteristics |
| WO1980000741A1 (en) * | 1978-10-04 | 1980-04-17 | K Konrad | Method and apparatus for processing waste fluid |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698156A1 (en) * | 1992-11-16 | 1994-05-20 | Rhone Poulenc Chimie | A method of heat treating an effluent comprising polluting organic material or an inorganic compound. |
| EP0598639A1 (en) * | 1992-11-16 | 1994-05-25 | Rhone-Poulenc Chimie | Process for the thermal treatment of an effluent containing organic polluting materials or an inorganic compound |
| US5817909A (en) * | 1992-11-16 | 1998-10-06 | Rhone-Poulenc Chimie | Purification of waste/industrial effluents comprising organic/inorganic pollutants |
| EP0652403A1 (en) * | 1993-11-05 | 1995-05-10 | Heurbel S.A. | Improvements to incinerators for liquids, having one or more oxy-fuel burners |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2484609A1 (en) | 1981-12-18 |
| JPH0140670B2 (en) | 1989-08-30 |
| PT73183B (en) | 1982-07-01 |
| NO811996L (en) | 1981-12-14 |
| PT73183A (en) | 1981-07-01 |
| EP0042331B1 (en) | 1984-02-22 |
| US4425856A (en) | 1984-01-17 |
| JPS5727190A (en) | 1982-02-13 |
| IE51231B1 (en) | 1986-11-12 |
| ES8204126A1 (en) | 1982-04-01 |
| AU528493B2 (en) | 1983-04-28 |
| ES503005A0 (en) | 1982-04-01 |
| DK258781A (en) | 1981-12-14 |
| AU7147281A (en) | 1981-12-17 |
| ATE6385T1 (en) | 1984-03-15 |
| FI811836L (en) | 1981-12-14 |
| BR8103753A (en) | 1981-10-20 |
| CA1173300A (en) | 1984-08-28 |
| IE811299L (en) | 1981-12-13 |
| DE3162364D1 (en) | 1984-03-29 |
| FR2484609B1 (en) | 1984-12-21 |
| ZA813949B (en) | 1982-06-30 |
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