EP0686686B1 - Four de traitement thermique de déchets et procédé associé - Google Patents
Four de traitement thermique de déchets et procédé associé Download PDFInfo
- Publication number
- EP0686686B1 EP0686686B1 EP95401182A EP95401182A EP0686686B1 EP 0686686 B1 EP0686686 B1 EP 0686686B1 EP 95401182 A EP95401182 A EP 95401182A EP 95401182 A EP95401182 A EP 95401182A EP 0686686 B1 EP0686686 B1 EP 0686686B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- waste
- furnace
- combustion chamber
- cavity
- pyrolysis
- 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.)
- Expired - Lifetime
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 8
- 238000007669 thermal treatment Methods 0.000 title claims 2
- 238000002485 combustion reaction Methods 0.000 claims abstract description 42
- 238000000197 pyrolysis Methods 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 33
- 239000000446 fuel Substances 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 9
- 230000002745 absorbent Effects 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 238000006298 dechlorination reaction Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 235000017168 chlorine Nutrition 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/10—Rotary retorts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/08—Rotary-drum furnaces, i.e. horizontal or slightly inclined externally heated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6435—Aspects relating to the user interface of the microwave heating apparatus
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/6458—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using humidity or vapor sensors
Definitions
- the present invention relates to heat treatment and more specifically the pyrolysis of solids, in particular waste industrial and / or household.
- the heat treatment of waste and in particular its pyrolysis is an increasingly used technology because it offers a number of advantages over other means such as that landfill, compaction or treatments said to be "wet", that is to say comprising at least one step of washing solids.
- Patent application FR-A- 2 668 774 filed at name of the applicant, describes an installation comprising a externally heated pyrolysis oven having in particular a specific means of trapping pollutants produced by pyrolysis.
- the French patent application EN. 94/06660 (FR-A- 2 720 487 or EP-A- 0 685 551) deposited at applicant's name discloses a rotary pyrolysis oven comprising heating means placed inside the same pyrolysis oven to reduce consumption energy and thermal inertia.
- the present invention makes it possible in particular to resolve the fouling problems in the exhaust gas lines of pyrolysis.
- Control and control of pressures in the installation is also advantageously taken into account according to the invention.
- an oven intended for the heat treatment of waste comprising an essentially cylindrical cavity for the waste to be treated rotating around its longitudinal axis, a combustion chamber located around said cavity and means for introducing fuel and oxidizer in said room.
- the means for introducing fuel and oxidant are oriented tangentially to the wall of said combustion chamber, so that the one or more flames they create develops helically around said cavity containing the waste.
- the means for introducing fuel and / or oxidizer are spaced longitudinally along the cavity to achieve staged combustion in said combustion chamber.
- the oven further includes an outlet for pyrolysis gases associated with a line intended to bring said pyrolysis gases to the means for introducing fuel in said combustion chamber.
- the gas recycling line of pyrolysis comprises an absorbent injection means and a means of separation between the gases and the solids circulating in said line.
- the rotary kiln may further include means intended to maintain inside the chamber combustion a pressure substantially equal to the pressure atmospheric.
- the holding means in pressure include in particular a means of extracting combustion fumes, a flow control valve controlled by a pressure sensor placed inside said combustion chamber.
- the invention further relates to a method of treatment waste thermal including pyrolysis of waste in an essentially cylindrical cavity which revolves around its longitudinal axis, heating of the cavity by means placed in a combustion chamber surrounding said cavity 1, injecting fuel and oxidizer into the combustion being carried out tangentially to the internal wall of said combustion chamber, so that the flame or flames they create develop (s) helically around the cavity (1) containing the waste.
- the method can further comprise a step of dechlorination of the pyrolysis gases from the cavity.
- the oven includes a rotating part elongated cylindrical 1 connected at each end to parts fixed 2 and 3 by means of tight seals 4 and 5.
- the part 1 is always either horizontal or slightly inclined according to solid flow and residence time requirements in the system.
- the waste is brought by a line 6 fixed to the element fixed 3 at the top of the oven. At the end of line 6, the waste falls in the rotating part 1, there constitute a bed 7 and are heated then pyrolyzed as they progress in the oven to the fixed part 2.
- the fixed part 2 comprises a zone 2a for the withdrawal of the solid phase, and a line 37 maintained over its entire length at a temperature close to that of the waste leaving the rotating part 1 and intended for the evacuation of pyrolysis gases.
- the rotating part 1 is heated by the combustion of pyrolysis gases, using means 9 fixed to a fixed chamber 12 of substantially cylindrical shape and completely enveloping most of the cylinder turning 1.
- the means 9 are essentially injection means and control of air and fuel flows, the air being brought by a line 10 and the fuel being brought by the line 8, which generate one or more flames wrapping the rotating part 1.
- the injection means are preferably placed opposite of the first part of the rotating cylinder, where the waste is still cold and humid and where energy needs are the biggest.
- the fumes produced by the combustion means 9 progress from the end 12a towards the end 12b according to a helical movement which completely envelops the part rotating 1. They leave chamber 12 by a line 11.
- This staging strategy reduces NOx emissions when the fuel contains nitrogen compounds.
- the staging of combustion therefore allows the flame to develop as the mixture forms. This characteristic in particular avoids the problems of auto-ignition which arise when a mixture of air and combustion is created upstream of burners.
- the staging of the combustion also makes it possible to modify heat flows along the rotating cylinder.
- the tiering can affect both fuel and air, although fuel staging is a priori less desirable, because it supposes the installation of flow control devices, all devices that increase the risk of fouling and plugging of pipes carrying pyrolysis gases.
- the oven according to the invention can allow waste treatment at temperatures between 150 and 900 ° C, with a preference for the range 400-600 ° C.
- the pyrolysis gases are burned without treatment. They can therefore cause particles hydrocarbon or not, which generate ash in the chamber 12.
- the lower part of chamber 12 can understand conventional collection and disposal systems of ashes such as scrapers (which are not shown in Figure 1).
- the means for introducing air and fuel 9a, 9b, and 15 may include restrictions (Venturi) adapted to the operation with dusty gases in order to have speeds fluid initials large enough that the flow of smoke in chamber 12 retains its helical character up to exit 11.
- the speeds initials of air and pyrolysis gases are between 10 and 250 m / s, preferably between 50 and 100 m / s. Air velocities and pyrolysis gases are not necessarily the same.
- the restrictions on means 9a, 9b and 15 also allow regulate the flow of pyrolysis gas from the cylinder turning, thus ensuring more stable combustion.
- part of said gases taken from the circuit can then be evacuated to the outside by a line 16.
- a line 16 can for example dop said pyrolysis gases, with a auxiliary fuel.
- connections 13 which for mechanical reasons are not always perfectly waterproof. It is therefore important that the pressure in said chamber 12 is maintained at all times under pressure atmospheric; which can be done as shown in the figure 1, thanks to a controlled smoke extraction carried out by example using an extractor 17 associated with a loop recycling, the flow rate of which is controlled by a valve 19 controlled at from the pressure information obtained by a sensor 30 placed inside the chamber 12.
- FIG. 3 Another embodiment of the oven according to the invention is given in Figure 3, where a dechlorination step of the pyrolysis gas after removal from the oven.
- Line 8 of the oven shown in Figure 1 is replaced by a line, devoid as much as possible, singularities to avoid blockages by solid deposits or tars.
- Said line is preferably maintained at a temperature close to that of the gases leaving the fixed part 2. It comprises an absorbent injection device 31, preferably associated with a means 32 such as for example a venturi, which facilitates the mixing of the absorbent with the pyrolysis gases.
- the process of dechlorination develops along the gas path in a line 33.
- the mixture then preferably enters a gas-solid separator 34 which can for example be a cyclone or possibly a set of cyclones arranged in series or in parallel.
- a gas-solid separator 34 can for example be a cyclone or possibly a set of cyclones arranged in series or in parallel.
- Pyrolysis gases free of most of their particles are then sent to the means of combustion 9 by a line 35, while the solids collected are discharged through another line 36.
- the absorbent, partially used, can advantageously be returned to the enclosure revolving 1, where he can again participate in the process of dechlorination of pyrolysis gases.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electromagnetism (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
- Il nécessite un apport énergétique important car les solides doivent être portés à des températures pouvant dépasser 1000°C ; d'où des coûts de fonctionnement très élevés,
- La nature parfois très hétérogène des déchets nécessite une souplesse de fonctionnement - souvent incompatible avec l'inertie thermique des installations, et les moyens de contrôle de débits/de chlores,
- Les rejets de matières polluantes tels que les oxydes de soufre créées lors de la pyrolyse doivent être maítrisés puis inhibés car ces rejets sont bien entendu nocifs pour l'environnement. Des normes de plus en plus sévères rendent le problème de rejet de matières polluantes très sensible.
- La possibilité d'utiliser les gaz de pyrolyse sans traitement particulier, c'est-à-dire avec leurs goudrons et leurs particules si celles-ci restent en quantités limitées, pour chauffer le cylindre tournant de manière indirecte;
- Un dispositif de combustion simple qui supprime les problèmes d'encrassement;
- Un dispositif de combustion qui peut réduire les émissions de NOx par étagement de l'injection du combustible et/ou du comburant;
- La possibilité de compléter par un traitement à sec, la déchloration des gaz de pyrolyse déjà commencée dans le cylindre tournant.
- La figure 1 montre de façon schématique en coupe longitudinale un four tournant selon un mode de réalisation de l'invention;
- La figure 2 est une coupe transversale simplifiée d'un four selon l'invention; et
- La figure 3 montre de façon schématique, en coupe longitudinale, un four tournant selon un autre mode de réalisation de l'invention.
Claims (10)
- Four destiné au traitement thermique et notamment à la pyrolyse de déchets, comprenant une cavité (1) essentiellement cylindrique pour les déchets à traiter, tournant autour de son axe longitudinal ; une chambre de combustion (12) située autour de ladite cavité et des moyens (9a, 9b, 15) d'introduction de combustible et de comburant caractérisé en ce que les moyens (9a, 9b, 15) d'introduction de combustible et de comburant sont orientés tangentiellement à la paroi de ladite chambre de combustion (12), de telle sorte que la ou les flammes qu'ils créent se développe de façon hélicoïdale autour de ladite cavité (1) contenant les déchets et en ce que les moyens (9a, 9b, 15) d'introduction de combustible ou de comburant sont différents et espacés longitudinalement le long de la cavité (1) afin de réaliser une combustion étagée dans ladite chambre de combustion (12).
- Four selon la revendication 1, caractérisé en ce qu'il comprend en outre une sortie pour les gaz de pyrolyse associée à une ligne (8, 33, 37) destinée à amener une partie desdits effluents de pyrolyse vers les moyens (9b) d'introduction de combustible dans ladite chambre de combustion (12).
- Four selon la revendication 2, caractérisé en ce que la ligne (37) pour l'évacuation des gaz de pyrolyse comprend un moyen (31) d'injection d'absorbant et un moyen (34) de séparation entre les gaz et les solides circulant dans ladite ligne.
- Four selon la revendication 3, caractérisé en ce que les moyens (31) d'injection d'absorbant coopèrent avec des moyens (32) tels que des venturi qui présentent des sections non constantes afin d'augmenter la vitesse d'écoulement des fluides qui les traversent et l'intensité du mélange gaz particulier.
- Four tournant selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre des moyens (17, 18, 19, 30) destinés à maintenir à l'intérieur de la chambre de combustion (12) une pression sensiblement égale à la pression atmosphérique.
- Four selon la revendication 5, caractérisé en ce que lesdits moyens de maintien en pression comprennent notamment un moyen (17) d'extraction des fumées de combustion, une vanne (19) de contrôle du débit commandée par un capteur de pression (30) placé à l'intérieur de ladite chambre de combustion (12).
- Four selon l'une quelconque des revendications précédentes, caractérisé en ce que la cavité tournante (1) coopère avec un premier moyen fixe (3) à travers lequel sont introduits les déchets et avec un second moyen fixe (2) dans lequel les déchets se déversent une fois traités.
- Four selon l'une quelconque des revendications 2 à 7, caractérisé en ce que ladite ligne (8,37) pour évacuer les gaz de pyrolyse en dehors du four tournant (1) débouche dans une extrémité fixe (2) dudit four (1).
- Procédé de traitement thermique de déchets comprenant une pyrolyse des déchets dans une cavité (1) essentiellement cylindrique qui tourne autour de son axe longitudinal, un chauffage de la cavité par des moyens (9a, 9b, 15) dans une chambre de combustion (12) entourant ladite cavité (1), caractérisé en ce que l'injection de combustible ainsi que l'injection de comburant dans la chambre de combustion (12) sont chacune réalisées tangentiellement à la paroi interne de ladite chambre de combustion (12) de telle sorte que la ou les flammes qu'ils créent se développe(nt) de façon hélicoïdale autour de la cavité (1) contenant les déchets et en ce que l'on réalise une combustion étagée dans ladite chambre de combustion (12) grâce à des introductions différentes et longitudinalement espacées de combustible et de comburant.
- Procédé selon la revendication 9 caractérisé en ce qu'il comprend en outre une étape de déchloration des gaz de pyrolyse issus de la cavité (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9407220 | 1994-06-10 | ||
FR9407220A FR2721095B1 (fr) | 1994-06-10 | 1994-06-10 | Four de traitement thermique de déchets et procédé associé. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0686686A1 EP0686686A1 (fr) | 1995-12-13 |
EP0686686B1 true EP0686686B1 (fr) | 2000-01-26 |
Family
ID=9464162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95401182A Expired - Lifetime EP0686686B1 (fr) | 1994-06-10 | 1995-05-22 | Four de traitement thermique de déchets et procédé associé |
Country Status (7)
Country | Link |
---|---|
US (1) | US5657705A (fr) |
EP (1) | EP0686686B1 (fr) |
CN (1) | CN1090305C (fr) |
AT (1) | ATE189256T1 (fr) |
DE (1) | DE69514718T2 (fr) |
FR (1) | FR2721095B1 (fr) |
PL (1) | PL176676B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9309455B2 (en) | 2003-07-01 | 2016-04-12 | Transitions Optical, Inc. | Indeno-fused ring compounds |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1011276A3 (fr) * | 1997-07-11 | 1999-07-06 | Pro Natura International Ass D | Dispositif de pyrolyse de biomasse. |
HU222415B1 (hu) * | 2000-07-13 | 2003-07-28 | Gábor Földes | Forgórendszerű hamvasztóberendezés |
US6497187B2 (en) | 2001-03-16 | 2002-12-24 | Gas Technology Institute | Advanced NOX reduction for boilers |
US6748881B1 (en) * | 2003-03-26 | 2004-06-15 | Armature Coil Equipment Inc. | Continuous pyrolysis furnace |
US8211338B2 (en) | 2003-07-01 | 2012-07-03 | Transitions Optical, Inc | Photochromic compounds |
US7802528B2 (en) | 2008-05-28 | 2010-09-28 | Rainbow Conversion Technologies, Llc | Pyrolysis apparatus |
LV14040B (lv) * | 2009-09-18 | 2009-12-20 | Intec Group, Sia | Biomasas pirolīzes reaktors |
CN104677090B (zh) * | 2015-01-27 | 2016-09-07 | 中钢集团马鞍山矿山研究院有限公司 | 一种外热式高温还原烟化焙烧回转窑 |
CN111763523A (zh) * | 2020-06-09 | 2020-10-13 | 华中科技大学 | 熔盐换热的旋转式连续热解反应炉和热解方法 |
CN111678155B (zh) * | 2020-06-10 | 2021-09-10 | 广东洁冠科技有限公司 | 一种管式炉焚烧系统 |
CN112923720B (zh) * | 2021-02-04 | 2022-11-22 | 湖南鼎玖能源环境科技股份有限公司 | 一种热风炉及回转设备 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2166516A5 (en) * | 1971-12-28 | 1973-08-17 | Nikitenko Grigory | Combustion chamber - for cylindrical rotary furnace |
US4301750A (en) * | 1978-03-15 | 1981-11-24 | Pan American Resources, Inc. | Method for pyrolyzing waste materials |
US4303477A (en) * | 1979-06-25 | 1981-12-01 | Babcock Krauss-Maffei Industrieanlagen Gmbh | Process for the pyrolysis of waste materials |
GB2212797A (en) * | 1987-11-26 | 1989-08-02 | Stella Spa | Pyrolytic disposal of biological sludge |
DE3741623A1 (de) * | 1987-12-04 | 1989-06-15 | Salzgitter Ag | Pyrolyse von bitumen in einem mahlkoerper enthaltenden reaktor |
US4870911A (en) * | 1988-08-05 | 1989-10-03 | Westinghouse Electric Corp. | Apparatus for waste disposal and method |
US5224433A (en) * | 1988-11-23 | 1993-07-06 | Cadence Chemical Resources, Inc. | Waste fuel delivery to long kilns |
CA2036581C (fr) * | 1990-02-23 | 1998-09-22 | Gunter H. Kiss | Methode de transport, de stockage intermediaire et de valorisation energetique et materielle de dechets de tous geres et dispositif associe |
FR2668774B1 (fr) | 1990-11-07 | 1995-09-01 | Inst Francais Du Petrole | Procede et dispositif de production d'un combustible solide a partir de dechets combustibles. |
US5374403A (en) * | 1993-07-13 | 1994-12-20 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for incinerating hazardous waste |
US5393501A (en) * | 1993-10-13 | 1995-02-28 | Cedarapids, Inc. | Material remediation in multi-function heating drum |
US5435258A (en) * | 1994-06-22 | 1995-07-25 | Piette; Michel | Method and apparatus for regenerating desiccants |
US5553554A (en) * | 1994-10-04 | 1996-09-10 | Urich, Jr.; Albert E. | Waste disposal and energy recovery system and method |
-
1994
- 1994-06-10 FR FR9407220A patent/FR2721095B1/fr not_active Expired - Fee Related
-
1995
- 1995-05-22 EP EP95401182A patent/EP0686686B1/fr not_active Expired - Lifetime
- 1995-05-22 DE DE69514718T patent/DE69514718T2/de not_active Expired - Fee Related
- 1995-05-22 AT AT95401182T patent/ATE189256T1/de not_active IP Right Cessation
- 1995-06-08 CN CN95106434.7A patent/CN1090305C/zh not_active Expired - Fee Related
- 1995-06-09 PL PL95309026A patent/PL176676B1/pl not_active IP Right Cessation
- 1995-06-09 US US08/489,119 patent/US5657705A/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9309455B2 (en) | 2003-07-01 | 2016-04-12 | Transitions Optical, Inc. | Indeno-fused ring compounds |
Also Published As
Publication number | Publication date |
---|---|
US5657705A (en) | 1997-08-19 |
ATE189256T1 (de) | 2000-02-15 |
CN1090305C (zh) | 2002-09-04 |
FR2721095A1 (fr) | 1995-12-15 |
PL176676B1 (pl) | 1999-07-30 |
PL309026A1 (en) | 1995-12-11 |
DE69514718T2 (de) | 2000-09-28 |
DE69514718D1 (de) | 2000-03-02 |
CN1114729A (zh) | 1996-01-10 |
EP0686686A1 (fr) | 1995-12-13 |
FR2721095B1 (fr) | 1996-08-23 |
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