EP0690903B2 - Procede et installation de regeneration d'huiles lubrifiantes - Google Patents
Procede et installation de regeneration d'huiles lubrifiantes Download PDFInfo
- Publication number
- EP0690903B2 EP0690903B2 EP94910446A EP94910446A EP0690903B2 EP 0690903 B2 EP0690903 B2 EP 0690903B2 EP 94910446 A EP94910446 A EP 94910446A EP 94910446 A EP94910446 A EP 94910446A EP 0690903 B2 EP0690903 B2 EP 0690903B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oils
- test
- extraction
- oil
- sodium hydroxide
- 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
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008929 regeneration Effects 0.000 title claims abstract description 10
- 238000011069 regeneration method Methods 0.000 title claims abstract description 10
- 239000010687 lubricating oil Substances 0.000 title claims description 9
- 239000003921 oil Substances 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract 3
- 239000010913 used oil Substances 0.000 claims description 21
- 238000012360 testing method Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 10
- 238000005292 vacuum distillation Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 230000001172 regenerating effect Effects 0.000 claims description 8
- 238000011282 treatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 15
- 235000011121 sodium hydroxide Nutrition 0.000 claims 5
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000012141 concentrate Substances 0.000 claims 1
- 238000004508 fractional distillation Methods 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 claims 1
- 238000000265 homogenisation Methods 0.000 claims 1
- 230000008030 elimination Effects 0.000 abstract description 6
- 238000003379 elimination reaction Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002199 base oil Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical group [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000010028 chemical finishing Methods 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
Definitions
- the invention relates to a method and an installation for regenerating used lubricating oils.
- Lubricating oils generally undergo modifications and alterations during their use, which implies their more or less frequent renewal.
- oils After use, these oils generally contain solid residues, additives, combustion residues, etc ....
- This installation includes two tanks, allowing two treatments, one with soda and the other with the ground, and two centrifuges, ensuring the separation, one of water and the other of used earth, of the oil to be treated.
- the objective of the present invention is therefore the development of a process for the regeneration of lubricating oils little or non-polluting used and whose implementation can be done in good economic conditions.
- the invention relates to a process for regenerating used lubricating oils comprising a step strong base treatment.
- the method comprises the steps of successive object processing of claim 1.
- the invention also relates to an installation for regenerating used oils allowing the implementation of the process mentioned above.
- the vacuum distillation unit is associated with a column bottom exhaustion evaporator.
- the used oils collected can have various origins, it can be for example engine oil, oil gears or hydraulic oil, turbine oil, etc.
- the regeneration process of the invention essentially aims at the elimination of light components, such like gasoline, diesel and water, but cannot remove components as heavy as the oils themselves but having different physical properties. It could be, for example, fuel whose elimination or treatment could only be obtained by a complete refining process.
- Chlor Test which makes it possible to detect the presence of chlorides.
- a hardened copper wire in used oil is presented to the flame.
- a greenish flame indicates the presence of chlorides.
- the "Drop Test” detects the presence of fuel. A drop of oil is deposited on a chromatographic paper. A concentric spot with a yellowish halo indicates the presence of fuel.
- the "Fat Test” detects the presence of fatty acids in oils. 2 ml of used oil is heated in presence of a soda tablet: when the oil freezes, after cooling, this means that fatty acids are present.
- Preheating means 3 bring the oils taken from the tank 2 to a temperature between 140 and 160 ° C.
- a base stored elsewhere in a tank 4 is supplied and mixed by means 5 with the used oils. preheated.
- a quantity of pure base of between 1 and 3% by mass is added to the used oils.
- This rate can advantageously be specified as a function of the quality of the used oils.
- Water and light hydrocarbons are extracted and the remaining mixture is directed to a unit 8 for extracting diesel (stripping). This elimination is carried out by distillation in a column.
- the gas oil 9 is then discharged and the remaining mixture is led to a distillation column 10 allowing the fractionation of the mixture into lubricating base oil sections and separation of the residue where all are concentrated the impurities.
- Base oils can be separated at different levels depending on the number of cuts desired.
- the distillation column 10 is a traditional vacuum column which allows the dissociation and the extraction of the residues, which are directed to an accumulation tank 14.
- the residues 15 are then removed and are capable of being used, for example, as tar or bitumen for road construction. They can also be used as fuels.
- the vacuum distillation column 10 is preferably associated with a bottom exhaustion evaporator. column 13 to improve its efficiency. Part of the energy required to raise the temperature used oils before the addition of the pure base preferably comes from the energy recovery carried out on the lubricating base oil sections 11, 12 of the column outlet 10.
- the used oils are advantageously filtered during their recovery and when they leave the tank. storage 2, so as to eliminate the solid particles which they may contain.
- the process and the installation of the invention therefore make it possible, from used oils, to obtain base oils of various reusable qualities, usable residues, water, light hydrocarbons and diesel.
- This process provides a minimum recovery rate of 90%. This rate is the mass ratio of quantities of oils recovered by this industrial process, compared to that of oils recovered in the laboratory, in optimum conditions independent of any economic consideration.
- the preferred embodiment uses the vacuum distillation column associated with an evaporator column bottom exhaustion. It is thus possible to obtain an oil cut recovery rate of excellent lubricant base, lower investment and operating costs compared to other processes known regeneration, to obtain regenerated oils as efficient as new base oils and to eliminate of these almost all metals.
- the installation of the invention can be implemented easily under the best conditions of reliability.
- Yield represents their yield (Mass ratio of the quantity recovered compared to the initial quantity of oil used to regenerate).
- T.A.N. represents their acidity (acid number content).
- VIS 40 ° C represents their viscosity at 40 ° C expressed in centistocks.
- Color is expressed relative to standard reference colors. Plus the numeric value shown is weak, the better the color and appearance is a qualitative indication.
- Ba represents barium, Ca calcium, Pb lead, Zn zinc, P phosphorus, Cr chromium, Fe iron and Si silicon.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lubricants (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Fats And Perfumes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Blast Furnaces (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9303275A FR2703067B1 (fr) | 1993-03-22 | 1993-03-22 | Procédé et installation de régénération d'huiles lubrifiantes. |
FR9303275 | 1993-03-22 | ||
PCT/FR1994/000308 WO1994021761A1 (fr) | 1993-03-22 | 1994-03-21 | Procede et installation de regeneration d'huiles lubrifiantes |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0690903A1 EP0690903A1 (fr) | 1996-01-10 |
EP0690903B1 EP0690903B1 (fr) | 1998-11-18 |
EP0690903B2 true EP0690903B2 (fr) | 2004-07-21 |
Family
ID=9445212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94910446A Expired - Lifetime EP0690903B2 (fr) | 1993-03-22 | 1994-03-21 | Procede et installation de regeneration d'huiles lubrifiantes |
Country Status (19)
Country | Link |
---|---|
EP (1) | EP0690903B2 (es) |
AT (1) | ATE173490T1 (es) |
AU (1) | AU6285794A (es) |
BG (1) | BG63637B1 (es) |
CA (1) | CA2159006C (es) |
CZ (1) | CZ290614B6 (es) |
DE (1) | DE69414699T3 (es) |
DK (1) | DK0690903T4 (es) |
DZ (1) | DZ1762A1 (es) |
ES (1) | ES2124879T5 (es) |
FR (1) | FR2703067B1 (es) |
HU (1) | HU215167B (es) |
MA (1) | MA23144A1 (es) |
OA (1) | OA10185A (es) |
PL (1) | PL178021B1 (es) |
RO (1) | RO116092B1 (es) |
RU (1) | RU2107716C1 (es) |
UA (1) | UA39881C2 (es) |
WO (1) | WO1994021761A1 (es) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2757175B1 (fr) * | 1996-12-13 | 1999-03-05 | Tunisienne De Lubrifiants Sotu | Procede et installation de regeneration d'huiles lubrifiantes a hautes performances |
DE19727618A1 (de) * | 1997-06-28 | 1999-01-07 | Mann & Hummel Filter | Verfahren zum Abscheiden von Verunreinigungen aus Kühlschmierstoffen |
US6174431B1 (en) * | 1998-05-28 | 2001-01-16 | Interline Hydrocarbon, Inc. | Method for obtaining base oil and removing impurities and additives from used oil products |
HU225697B1 (en) * | 2001-11-20 | 2007-06-28 | Jozsef Koszta | Method for purifying of used oils |
PT1559768E (pt) * | 2002-07-15 | 2006-09-29 | Sener Grupo De Ingenier A S A | Metodo de regeneracao de oleos usados atraves de extraccao com solventes |
ES2199697B1 (es) * | 2003-09-23 | 2005-02-01 | Sener Grupo De Ingenieria, S.A. | Procedimiento para regenerar aceites usados por desmetalizacion y destilacion. |
RU2266316C1 (ru) * | 2004-09-03 | 2005-12-20 | Общество с ограниченной ответственностью "Роса-1" (ООО "Роса-1") | Способ регенерации масел |
FR2961521B1 (fr) * | 2010-06-22 | 2013-07-12 | Conception D Equipements Pour L Environnement Et L Ind Soc D | Procede de purification d'une charge hydrocarbonee usagee |
MX2016005893A (es) | 2013-11-08 | 2016-08-17 | Sener Ing & Sist | Proceso para aumentar el rendimiento de bases lubricantes en la regeneracion de aceites usados. |
CN110484345B (zh) * | 2019-07-29 | 2021-12-17 | 四川绿艺华福石化科技有限公司 | 一种废润滑油再生方法 |
RU2712025C1 (ru) * | 2019-10-23 | 2020-01-24 | Акционерное общество "Интер РАО - Электрогенерация" | Установка для регенерации использованных смазочных масел с высокими рабочими параметрами |
RU2745628C1 (ru) * | 2020-08-25 | 2021-03-29 | Открытое акционерное общество "Всероссийский дважды ордена Трудового Красного Знамени теплотехнический научно-исследовательский институт" (ОАО "ВТИ") | Установка для регенерации отработавших смазочных масел |
RU2750729C1 (ru) * | 2020-10-07 | 2021-07-01 | Публичное акционерное общество "Нефтяная компания "Роснефть" (ПАО "НК "Роснефть") | Способ регенерации отработанного триарилфосфатного огнестойкого турбинного масла |
CN114225452A (zh) * | 2021-12-23 | 2022-03-25 | 安徽国孚生态工程技术有限公司 | 一种废润滑油四段蒸发回收方法 |
CN114225451A (zh) * | 2021-12-23 | 2022-03-25 | 安徽国孚生态工程技术有限公司 | 一种废润滑油循环蓄热蒸馏装置及方法 |
FR3137106A1 (fr) | 2022-06-28 | 2023-12-29 | Be Energy | Système de traitement pour la décontamination et l’amélioration des propriétés d’huiles minérales usagées |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB243666A (en) * | 1924-11-29 | 1926-10-21 | Sharples Specialty Co | Improved method of and apparatus for purifying oil |
US1698257A (en) * | 1926-05-05 | 1929-01-08 | Laval Separator Co De | Process of reclaiming used lubricating oil |
US1919655A (en) * | 1929-07-12 | 1933-07-25 | Bocjl Corp | Purification of oil |
US3565791A (en) * | 1968-12-12 | 1971-02-23 | Kenneth Urquhart | Method and apparatus for distiling oil and water mixtures |
US3791965A (en) * | 1972-04-07 | 1974-02-12 | Petrocon Corp | Process for re-refining used petroleum products |
DE2818521A1 (de) * | 1978-04-27 | 1979-11-08 | Degussa | Verfahren zur wiederaufbereitung von gebrauchten schmieroelen (ii) |
US4256578A (en) * | 1979-11-29 | 1981-03-17 | Amsted Industries Incorporated | Waste oil recovery process |
-
1993
- 1993-03-22 FR FR9303275A patent/FR2703067B1/fr not_active Expired - Lifetime
-
1994
- 1994-03-21 DE DE69414699T patent/DE69414699T3/de not_active Expired - Lifetime
- 1994-03-21 UA UA95094243A patent/UA39881C2/uk unknown
- 1994-03-21 AU AU62857/94A patent/AU6285794A/en not_active Abandoned
- 1994-03-21 RO RO95-01657A patent/RO116092B1/ro unknown
- 1994-03-21 CZ CZ19952433A patent/CZ290614B6/cs not_active IP Right Cessation
- 1994-03-21 CA CA002159006A patent/CA2159006C/fr not_active Expired - Lifetime
- 1994-03-21 DZ DZ940025A patent/DZ1762A1/fr active
- 1994-03-21 MA MA23452A patent/MA23144A1/fr unknown
- 1994-03-21 ES ES94910446T patent/ES2124879T5/es not_active Expired - Lifetime
- 1994-03-21 RU RU95121595A patent/RU2107716C1/ru active
- 1994-03-21 EP EP94910446A patent/EP0690903B2/fr not_active Expired - Lifetime
- 1994-03-21 PL PL94310803A patent/PL178021B1/pl unknown
- 1994-03-21 HU HU9502763A patent/HU215167B/hu unknown
- 1994-03-21 AT AT94910446T patent/ATE173490T1/de active
- 1994-03-21 DK DK94910446T patent/DK0690903T4/da active
- 1994-03-21 WO PCT/FR1994/000308 patent/WO1994021761A1/fr active IP Right Grant
-
1995
- 1995-09-20 BG BG100012A patent/BG63637B1/bg unknown
- 1995-09-22 OA OA60714A patent/OA10185A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
AU6285794A (en) | 1994-10-11 |
CA2159006A1 (fr) | 1994-09-29 |
DZ1762A1 (fr) | 2002-02-17 |
CZ243395A3 (en) | 1996-01-17 |
CA2159006C (fr) | 2005-06-21 |
DE69414699T2 (de) | 1999-05-27 |
HUT72015A (en) | 1996-03-28 |
UA39881C2 (uk) | 2001-07-16 |
RU2107716C1 (ru) | 1998-03-27 |
WO1994021761A1 (fr) | 1994-09-29 |
EP0690903B1 (fr) | 1998-11-18 |
BG63637B1 (bg) | 2002-07-31 |
PL178021B1 (pl) | 2000-02-29 |
FR2703067B1 (fr) | 1995-08-04 |
RO116092B1 (ro) | 2000-10-30 |
CZ290614B6 (cs) | 2002-09-11 |
DK0690903T4 (da) | 2004-11-22 |
FR2703067A1 (fr) | 1994-09-30 |
EP0690903A1 (fr) | 1996-01-10 |
ES2124879T3 (es) | 1999-02-16 |
DK0690903T3 (da) | 1999-08-02 |
BG100012A (bg) | 1996-11-29 |
ES2124879T5 (es) | 2005-02-16 |
HU215167B (hu) | 1998-10-28 |
ATE173490T1 (de) | 1998-12-15 |
DE69414699T3 (de) | 2005-02-10 |
PL310803A1 (en) | 1996-01-08 |
MA23144A1 (fr) | 1994-10-01 |
OA10185A (fr) | 1996-12-18 |
HU9502763D0 (en) | 1995-11-28 |
DE69414699D1 (de) | 1998-12-24 |
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