EP1089833A1 - Procede de decapage et d'aseptisation de l'interieur d'un recipient et dispositif pour sa mise en oeuvre - Google Patents
Procede de decapage et d'aseptisation de l'interieur d'un recipient et dispositif pour sa mise en oeuvreInfo
- Publication number
- EP1089833A1 EP1089833A1 EP99923703A EP99923703A EP1089833A1 EP 1089833 A1 EP1089833 A1 EP 1089833A1 EP 99923703 A EP99923703 A EP 99923703A EP 99923703 A EP99923703 A EP 99923703A EP 1089833 A1 EP1089833 A1 EP 1089833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- container
- treated
- barrel
- optical
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0865—Cleaning containers, e.g. tanks by burning-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
- B27H5/00—Manufacture of tubes, coops, or barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
Definitions
- the present invention relates to a process for pickling and sanitizing the internal surface of a container, for example made of wood, metal, concrete or any other material, in particular a wooden barrel having a surface layer of a deposit of organic and / or mineral matter, in particular a tannin deposit resulting from the aging of a wine in barrels, as well as a device for its implementation.
- a container for example made of wood, metal, concrete or any other material
- a wooden barrel having a surface layer of a deposit of organic and / or mineral matter, in particular a tannin deposit resulting from the aging of a wine in barrels, as well as a device for its implementation.
- the wood transfers various substances to the wine, such as furans, lactones, aldehydes, phenol acids, phenols and ketones.
- the barrel puts the wine in an oxidizing balance and acts as a kind of micro-doser of oxygen, which allows a first oxidoreductive aging of the wine. It is generally considered that a new barrel transfers tannoid substances to wine while an old barrel transfers decomposing substances from wood.
- a one-year-old barrel that is to say a barrel that has already been used for the aging of a wine for a year, generally gives a pure wood taste to the wine, while a six-year barrel gives usually a taste of rancio.
- wooden barrels whose interior has been burnt on the surface are also used to transfer other substances to the wine, such as phenolics, furan aldehydes and color.
- a barrel can be used to raise up to four wines, for a period of 4 to 6 years. After this period, the barrel can no longer be used as a aging tool, because the wine has penetrated for about 5 to 10 mm in the thickness of the barrel which has a thickness of about 22 to 27 mm, this penetration of the wine causing clogging of wood pores by tannin deposits and by transformations of wood compounds, such as phenolic, tartaric acid, etc., which prevents the subsequent transfers of substances between the wood and the wine, which transfers are essential for the aging of the wine.
- These old barrels could still serve as storage containers, but this is generally not the case, since microbial accidents can occur during storage between the wine and the deposits covering the internal surface of the barrel.
- One solution is to perform a mechanical pickling, using a planer or a sander, from the inside of the barrel, then possibly to burn, to find the organoleptic characteristics characteristic of the new barrel.
- this solution is long and expensive to implement and does not make it possible to sanitize the barrel against microbial infections.
- mechanical stripping results in the removal of a substantial thickness of the barrel, several millimeters, which limits the number of possible renovations.
- Another solution is to perform chemical maintenance of the barrel, but this solution is very cumbersome to implement and expensive.
- the object of the invention is to propose a process for pickling and sanitizing the internal surface of a container, which is both simple to implement and which allows a very high number of renovations.
- the invention is based on the principle of a laser renovation which ensures precise, selective and temperature-controlled pickling, by photoabling biological stains, for example fungi, molds, polychlorophenol and chloro-anisole compounds. , and / or mineral soils which have settled on the internal surface of the container.
- biological soils having physical characteristics different from those of the material constituting the container, the rise in heat during the absorption of the light produced by the laser will be faster on the deposit of organic and / or mineral matter than on the container, which eliminates biological and / or mineral soils without causing a deep energy transfer from the material constituting the barrel.
- the subject of the invention is a process for pickling and sanitizing the internal surface of a container made of wood, metal, concrete or other material, having a surface layer of a deposit of organic matter and / or mineral, in particular a deposit of tannin resulting from the aging of a wine in barrels, characterized in that it consists in applying to the surface to be treated a pulsed radiation produced by an intense optical source, each pulse having a sufficiently short duration and an energy density per unit area to be treated sufficiently high to cause the sublimation of said surface layer, the surface of the container thus exposed being sanitized by the heat given off by the radiation.
- each pulse has a duration between
- each pulse has a duration of approximately 100 ns and an energy density of approximately 8 J / cm 2 .
- a long pulse duration for example of the order of ms or ⁇ s, would cause an energy transfer in the material constituting the container and a low ejection speed of the sublimated soiling, so that organic and / or mineral deposits must be removed over a small thickness, quickly and without consuming too much energy.
- a pulse duration of around 100 ns a very high peak power for the beam is obtained, which causes a high ejection speed of the sublimed organic and / or mineral material and a low heat diffusion in the material constituting the container.
- the method consists in applying to each surface unit from 2 to 20 pulses, preferably between 4 and 10 pulses, depending on the type of material of the container to be treated, the state of the surface to be treated and the thickness of the organic and / or mineral deposit.
- the radiation is determined so as to cause a quasi-adiabatic sublimation of the layer of organic and / or mineral matter on the surface to be treated. It can be provided, in particular, that 80% of the heat produced by the radiation is absorbed by the surface layer during sublimation, the remaining 20% being dissipated in the thickness of the material constituting the container.
- each pulse causes the sublimation of approximately 20 ⁇ m of material thickness on the surface to be treated.
- the method consists in evacuating the gaseous plasma produced during sublimation, by suction or blowing of an inert gas or air.
- the intense optical source is a laser source, for example a CO 2 laser source at atmospheric pressure and with transverse excitation.
- the method consists, simultaneously or after the pickling and sanitizing step, of applying a second intense optical radiation to the surface to be treated, said second radiation being applied continuously or almost continuously for a sufficiently long period and with an energy density per unit area to be treated sufficiently high to cause burning of the wood on the surface.
- this second radiation is applied by a laser source with defocused beam or by beam scanning.
- the second radiation has a power density of between 100 and 200 W / cm 2 for an application time of the order of 0.05 to 0.2 seconds.
- the second radiation preferably has an energy density per unit area to be treated of the order of 20 J / cm 2 .
- the energy density received by the wood in the case of burning or burnishing, is higher than that for pickling, the total energy is transferred during the burning over a long period, which allows the heat to diffuse in the wood and carbonize it on the surface, while, in the case of pickling, the energy is applied for a very short time, causing instant sublimation of the organic layer.
- the second radiation is applied by an infrared or ultraviolet lamp, for example a lamp having a power of 70 W for an application period of several minutes, at a distance of a few centimeters between the radiation source and the surface to be treated.
- an infrared or ultraviolet lamp for example a lamp having a power of 70 W for an application period of several minutes, at a distance of a few centimeters between the radiation source and the surface to be treated.
- the invention also relates to a device for implementing the aforementioned method, characterized in that it comprises an intense optical source capable of producing pulsed radiation for pickling and sanitizing the internal surface of the container, a guide of waves connected to the optical output of the source, an optical focusing head connected to the output of the waveguide, to define the section of interaction with the surface to be treated and thus the energy density to be deposited per unit surface, a robot for the relative movement between the optical head and the internal surface of the container to be treated, and a central control unit for controlling and synchronizing, on the one hand, the parameters of the source, such as the number of pulses to be applied per unit area, the frequency of pulses and the radiation power of the source, and on the other hand, the movements to be made by the robot to treat the entire internal surface of the container.
- an intense optical source capable of producing pulsed radiation for pickling and sanitizing the internal surface of the container
- a guide of waves connected to the optical output of the source
- an optical focusing head connected to the output of
- the robot is able to rotate said optical head by an angle of approximately 120 ° relative to the axis of the container.
- the robot is able to drive the optical head relative to the container in relative rotation about the axis of the container.
- the robot is able to drive in axial translation, either the container or the optical head, which can be, in this case, connected to a telescopic or extendable waveguide.
- the optical head is located at a distance from the surface to be treated on the order of a few tens of centimeters.
- the device comprises a camera for viewing the treatment of the surface, said camera being connected to a display screen and to the central control unit for controlling visually and in real time the treatment of the surface.
- the optical head is arranged to penetrate inside the container, for example by the bung of a wooden barrel, or by a hole specially arranged in one of the bottom flanges of the ft, or else by one of the bottoms of the barrel from which the flange has been removed.
- the device comprises a suction or blowing pipe for the fumes generated by the pickling.
- the evacuation of the gaseous plasma aims to avoid, on the one hand, any recontamination of the treated and surrounding surface, on the other hand, any interference with the optical beam and with the possible viewing camera.
- the device comprises a second intense optical source for producing the second radiation for the burning of a wooden container.
- FIG. 1 is a functional block diagram of the device of the invention adapted for a test on a sample
- - Figure 2 is a partial simplified diagram of the device of the invention for pickling a barrel
- - Figure 3 is an enlarged view of a detail of Figure 1, showing a pickling area.
- FIG. 1 there is shown a laser source 1 which is intended to produce a laser beam 2 in the direction of a converging lens 3 which converges a beam 4 towards a stave 5 of a wooden barrel.
- the stave 5 is carried by a robot 6.
- a central control unit 7 is connected by a robot control interface 8 to the robot 6, and by a synchronization interface 9 with the laser source 1.
- the central control unit 7 is associated with a device 10 consisting of a screen 11 and a keyboard 12.
- a camera 13 can also be connected to the central control unit 7, as shown in dashed lines, for viewing the treatment of the surface of the stave 5.
- FIG. 2 we see a wooden barrel 14, swollen in the middle, and constituted, in a known manner, of assembled and encircled staves, one of the bottoms of which is closed by a circular flange 16 and the other bottom of which open towards the laser source 1.
- the barrel 14 rests by the convex external surface of its side wall 17 on rotary rollers 18 which are intended to be driven in rotation about an axis parallel to the axis 15 of the barrel 14, by the aforementioned robot 6.
- the aforementioned converging lens 3 is integrated into a focusing optical head 19 which is connected to the laser source 1 by a waveguide 20 which is here provided telescopic in the axial direction materialized by the double arrow L, but could alternatively be expandable.
- the waveguide 20 is substantially aligned with the axis 15 of the barrel 14.
- the optical head 19 is articulated relative to the waveguide 20 on a horizontal axis 21 perpendicular to the axis 15 of the barrel.
- the optical head 19 is designed to pivot around this axis 21 by an angle ⁇ of approximately 120 °, so that the converging beam 4 leaving the optical head 19 can pivot between a position (not shown) where said beam 4 is aligned with the axis 15 of the barrel, in the direction of the bottom flange 16, and an inclined position of 30 ° relative to the vertical, in the direction of the open bottom of the barrel.
- the optical head 19 can scan the entire internal surface of the barrel, at namely the internal surface of the bottom flange 16 and the concave internal surface of the side walls 17 of the barrel.
- the rotary rollers 18 make it possible to rotate the barrel 14 about its axis 15, as indicated by the arrow 22.
- the beam 2 from the optical source 1 is transformed into a converging beam 4 by the lens 3, to converge this beam on a predetermined limited area of the inner wall of the stave 5, to sublimate an organic material deposition layer 23.
- the fumes produced by the sublimation of the organic material layer 23 can be sucked in or blown through a pipe 24 inserted in the barrel 14, preferably near the zone of treatment on a stave 5.
- the suction or blowing pipe for fumes 24 can be associated with the camera 13.
- the camera 13 is preferably provided with an autofocus lens, making it possible to visualize the surface to be treated on the control screen 1 1, and therefore the operator to control, without risk, the quality of pickling and burning. Thanks to the combined movements of the waveguide 20 in the axial direction of the barrel, of the axial rotation of the barrel 14 and of the limited angular pivoting of the optical head 19, the entire internal surface of the barrel can be treated.
- each pulse causes the removal of 20 ⁇ m of wood thickness, which is negligible compared to l thickness of a stave which is generally between 22 and 27 mm.
- the deposition of organic matter is generally intimately linked to a surface layer of the internal surface of the wood, which causes, during pickling, the removal of organic matter and a layer of wood of corresponding thickness which is impregnated with said layer of organic material.
- the laser source is preferably a CO 2 laser at atmospheric pressure and transverse excitation (TEA), having a wavelength of 10.6 ⁇ m, with a beam exit section of 16 x 32 mm.
- TAA transverse excitation
- the focusing head will preferably have a large focal length relative to the distance between said head and the surface to be treated, in order to reduce the precision of the positioning of the head relative to the section of interaction of the beam with the surface to be treated.
- the distance between the optical head 19 and the surface to be treated can vary between 30 and 50 cm.
- laser sources could be coupled in parallel, for example three sources, each having a pulse frequency of 200 Hz, to deliver energy alternately on the same optical path, which makes it possible to obtain a frequency of global pulses of 600 Hz, each pulse having for example an energy density of between 150 and 200 mJ / cm 2 , the speed of movement of the laser beam relative to the surface to be treated being determined by the central unit of control which includes a computer, so as to obtain an energy density of 8 J / cm 2 on the surface to be treated.
- the distance between the focusing head and the surface to be treated is on the order of 60 cm, the required exposure time is much longer, on the order of 5 min, to obtain the desired burn, but in this case, the burn affects a depth of the order of mm and the much more energy is deposited;
- the duration d the necessary exposure is significantly longer on the order of 9 min.
- the exposure time and the power density of the intense optical source will be determined according to the degree of burning desired by the user.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9808140A FR2780288B1 (fr) | 1998-06-26 | 1998-06-26 | Procede de decapage et d'aseptisation de l'interieur d'un recipient et dispositif pour sa mise en oeuvre |
FR9808140 | 1998-06-26 | ||
PCT/FR1999/001363 WO2000000305A1 (fr) | 1998-06-26 | 1999-06-09 | Procede de decapage et d'aseptisation de l'interieur d'un recipient et dispositif pour sa mise en oeuvre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1089833A1 true EP1089833A1 (fr) | 2001-04-11 |
EP1089833B1 EP1089833B1 (fr) | 2003-09-17 |
Family
ID=9527915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99923703A Expired - Lifetime EP1089833B1 (fr) | 1998-06-26 | 1999-06-09 | Procede de decapage et d'aseptisation de l'interieur d'un recipient et dispositif pour sa mise en oeuvre |
Country Status (7)
Country | Link |
---|---|
US (1) | US6368554B1 (fr) |
EP (1) | EP1089833B1 (fr) |
AU (1) | AU756325B2 (fr) |
DE (1) | DE69911406D1 (fr) |
FR (1) | FR2780288B1 (fr) |
WO (1) | WO2000000305A1 (fr) |
ZA (1) | ZA200100136B (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020122742A1 (en) * | 1998-06-26 | 2002-09-05 | Rene Wajsfelner | Process for stripping and sterilizing the inside of a container and device for its implementation |
AU2002329612A1 (en) * | 2001-07-20 | 2003-03-03 | American Purification, Inc. | Microwave desorber for removing contaminants from resin |
NZ517061A (en) * | 2002-02-07 | 2003-03-28 | Westbridge Pty Ltd | Heating of oak wood |
DE102004032861A1 (de) * | 2004-07-07 | 2006-02-02 | Khs Maschinen- Und Anlagenbau Ag | Verfahren sowie Vorrichtung zum Sterilisieren von Behältern mit UV-Strahlung |
DE102008007428B4 (de) * | 2008-02-01 | 2016-02-11 | Khs Gmbh | Verfahren sowie Vorrichtung zum Sterilisieren von Packmitteln |
US20110203093A1 (en) * | 2010-02-22 | 2011-08-25 | Re Wine Barrels, Llc | Method for reconditioning barrels |
US20130213524A1 (en) * | 2010-04-13 | 2013-08-22 | Diverse Barrel Solutions Pty Ltd | Transportable apparatus for re-conditioning wine barrels using a turnstile |
US9687575B2 (en) | 2010-06-01 | 2017-06-27 | Bluemorph, Llc | UV devices, systems and methods for UV sterilization |
US11260138B2 (en) | 2010-06-01 | 2022-03-01 | Bluemorph, Llc | UV sterilization of container, room, space or defined environment |
US9044521B2 (en) * | 2010-06-01 | 2015-06-02 | Alexander Farren | UV sterilization of containers |
US9387268B2 (en) | 2010-06-01 | 2016-07-12 | Alexander Farren | Compositions and methods for UV sterilization |
US10046073B2 (en) | 2010-06-01 | 2018-08-14 | Bluemorph, Llc | Portable UV devices, systems and methods of use and manufacturing |
EP2582401B1 (fr) | 2011-06-01 | 2019-09-25 | Bluemorph LLC | Stérilisation de récipients aux ultraviolets |
US9751235B2 (en) * | 2011-08-03 | 2017-09-05 | Diverse Barrel Solutions Pty Ltd | System and method for the reconditioning of barrels including a robotic arm with a removable laser module |
CN102380494B (zh) * | 2011-09-23 | 2013-06-12 | 海润光伏科技股份有限公司 | 滚动清洗装置 |
ES2434173B2 (es) * | 2013-07-26 | 2014-06-23 | Mevion Technology, S.L. | Procedimiento para la eliminación del Brettanomyces en barricas |
CN106694471A (zh) * | 2016-12-07 | 2017-05-24 | 上海临仕激光科技有限公司 | 一种管道内壁的激光清洗方法及清洗装置 |
IT201900009591A1 (it) * | 2019-06-20 | 2020-12-20 | Smi Spa | Sistema per la disinfezione interna di contenitori |
CN113441479A (zh) * | 2020-03-25 | 2021-09-28 | 中移(上海)信息通信科技有限公司 | 激光清洗装置和设备 |
CN112157073B (zh) * | 2020-09-09 | 2022-05-06 | 浙江久立特材科技股份有限公司 | 一种双金属胶合复合管环缝隙除胶设备及除胶工艺 |
US11370213B2 (en) | 2020-10-23 | 2022-06-28 | Darcy Wallace | Apparatus and method for removing paint from a surface |
FR3135622A1 (fr) * | 2022-05-17 | 2023-11-24 | Srx | Composition pour préserver un récipient vinaire. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867796A (en) * | 1982-04-05 | 1989-09-19 | Maxwell Laboratories, Inc. | Photodecontamination of surfaces |
GB8713688D0 (en) * | 1987-06-11 | 1987-07-15 | Distillers Co | Reconstituting casks |
US4920994A (en) * | 1989-09-12 | 1990-05-01 | The United States Of America As Represented By The United States Department Of Energy | Laser removal of sludge from steam generators |
US5361752A (en) * | 1991-05-29 | 1994-11-08 | Origin Medsystems, Inc. | Retraction apparatus and methods for endoscopic surgery |
FR2678418B1 (fr) * | 1991-06-26 | 1994-08-05 | Framatome Sa | Procede de travail au laser dans une zone contaminee d'une installation nucleaire, et equipement pour sa mise en óoeuvre. |
DE4320341C2 (de) * | 1993-06-21 | 1996-09-26 | Fraunhofer Ges Forschung | Verfahren zum Abtragen von Deckschichten auf Glasbauteilen mit Laserstrahlung, Vorrichtung zur Durchführung des Verfahrens und mit dem Verfahren hergestellte Glasbauteile |
FR2752386B1 (fr) * | 1996-08-14 | 1998-09-11 | Commissariat Energie Atomique | Procede de nettoyage ou de decontamination d'un objet au moyen d'un faisceau laser ultraviolet et dispositif pour sa mise en oeuvre |
-
1998
- 1998-06-26 FR FR9808140A patent/FR2780288B1/fr not_active Expired - Fee Related
-
1999
- 1999-06-09 WO PCT/FR1999/001363 patent/WO2000000305A1/fr active IP Right Grant
- 1999-06-09 DE DE69911406T patent/DE69911406D1/de not_active Expired - Lifetime
- 1999-06-09 AU AU40475/99A patent/AU756325B2/en not_active Ceased
- 1999-06-09 EP EP99923703A patent/EP1089833B1/fr not_active Expired - Lifetime
- 1999-06-09 US US09/720,316 patent/US6368554B1/en not_active Expired - Fee Related
-
2001
- 2001-01-05 ZA ZA200100136A patent/ZA200100136B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0000305A1 * |
Also Published As
Publication number | Publication date |
---|---|
ZA200100136B (en) | 2001-07-25 |
AU756325B2 (en) | 2003-01-09 |
EP1089833B1 (fr) | 2003-09-17 |
US6368554B1 (en) | 2002-04-09 |
WO2000000305A1 (fr) | 2000-01-06 |
AU4047599A (en) | 2000-01-17 |
FR2780288B1 (fr) | 2001-02-16 |
FR2780288A1 (fr) | 1999-12-31 |
DE69911406D1 (de) | 2003-10-23 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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