EP0509536A2 - Procédé et dispositif pour la régénération des objets chargés de polluants - Google Patents

Procédé et dispositif pour la régénération des objets chargés de polluants Download PDF

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Publication number
EP0509536A2
EP0509536A2 EP92106685A EP92106685A EP0509536A2 EP 0509536 A2 EP0509536 A2 EP 0509536A2 EP 92106685 A EP92106685 A EP 92106685A EP 92106685 A EP92106685 A EP 92106685A EP 0509536 A2 EP0509536 A2 EP 0509536A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
objects
parts
station
treatment
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.)
Withdrawn
Application number
EP92106685A
Other languages
German (de)
English (en)
Other versions
EP0509536A3 (en
Inventor
Hans-Walter Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edwards Kniese & Co Hochvakuum GmbH
Edwards Kniese & Co Hochvakuum
Original Assignee
Edwards Kniese & Co Hochvakuum GmbH
Edwards Kniese & Co Hochvakuum
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE4112914A external-priority patent/DE4112914C2/de
Application filed by Edwards Kniese & Co Hochvakuum GmbH, Edwards Kniese & Co Hochvakuum filed Critical Edwards Kniese & Co Hochvakuum GmbH
Publication of EP0509536A2 publication Critical patent/EP0509536A2/fr
Publication of EP0509536A3 publication Critical patent/EP0509536A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2230/00—Other cleaning aspects applicable to all B08B range
    • B08B2230/01—Cleaning with steam

Definitions

  • the invention relates to a method for regenerating contaminated objects according to the preamble of claim 1 and a device for regenerating contaminated objects according to the preamble of claim 9.
  • This conventional acid or alkali treatment is also very lengthy and, in particular, exhausting the parts over about 12 to 24 hours is required.
  • the dirt deposits have not yet been removed from the parts.
  • the parts are then exposed to a cleaning liquid consisting of glass beads suspended in water.
  • the cleaning fluid acts mechanically on the parts to be regenerated via the glass beads, whereby the deposits are removed from these parts.
  • a further rinsing operation takes place in conventional systems, in which glass beads remaining on the parts to be cleaned are removed in a freon solution under the influence of ultrasound.
  • the solution according to the invention ensures that the substantial part of the amount of dirt, which mostly contains pollutants, is removed in the first cleaning step under the action of the superheated steam / water jet, so that the subsequent cleaning treatment with a particle slurry, preferably a glass bead slurry, essentially only serves to remove dirt residues.
  • a particle slurry preferably a glass bead slurry
  • An exchange or regeneration of a circulating particle slurry quantity is only necessary at very large intervals.
  • the cleaning agent used in the previous main cleaning step namely the superheated steam, does not need to be regenerated, and the superheated steam mass required for cleaning, which is collected together with the rinsed off material containing pollutants, is very small, so that only small amounts of collected material are disposed of will need.
  • the superheated steam / water condenses in a flash tank, which collects the rinsed material in addition to the superheated steam / water, and is temporarily stored in this container.
  • the expansion tank can be connected to a number of larger storage tanks, each of which is provided for the separate storage of collected materials which have a different composition and are accordingly to be disposed of differently.
  • the cleaning by the slurry of glass beads can advantageously be followed by a post-treatment step in which the cleaned articles are freed from cleaning agent residues, in particular deposited glass beads.
  • This aftertreatment can include treatment with a compressed air spray jet and / or water, and in particular for the removal of glass beads, an ultrasonic washing of the objects in water can advantageously be carried out.
  • the parts are fed directly to a drying device, in particular to prevent corrosion.
  • the cleaning path can be preceded by a ventilated work station where objects to be cleaned are unpacked from gas-tight packaging and, if necessary, broken down into further parts.
  • the present invention also provides such a work station for the treatment of polluted objects, in particular pumps from vacuum systems, with a ventilation device for the supply of fresh air and the removal of polluted air, the work station being designed in such a way that at least one , arranged between a worker and an object to be treated protective shield with through openings and at least one viewing window is provided, and that the ventilation device generates a fresh air flow flowing around the worker with the protective shield arranged in front of it essentially from behind.
  • FIG. 1 which schematically shows a complete cleaning section
  • the reference numeral 9 denotes a vented lock in which the delivered, toxicly loaded units can be stored.
  • This lock room 9 adjoins a cabin 8, in which a storage area 10 for the intermediate storage and disassembly of the assemblies, a work station 7, which is used for the further dismantling of the assemblies into individual parts to be cleaned, and one The first cleaning station, designated by the reference number 1, in which the soiled parts are cleaned with the aid of a pressurized steam / water jet is provided.
  • the cabin 8 is equipped with a ventilation system.
  • the first cleaning station 1 is followed by an intermediate station 2, into which parts treated in the first cleaning station 1 with the aid of the superheated steam / water jet can be transferred.
  • the intermediate station which acts as a lock, is followed by a second cleaning station 3, in which the parts are pressurized with a glass bead slurry, contaminant residues are removed from the parts and the parts are surface-finished.
  • the second cleaning station 3 is followed by a rinsing station which serves for post-cleaning and comprises a work station 4 at which the parts can be treated by a spray jet in order to rinse off residues of cleaning agents from the second cleaning station 3.
  • the aftertreatment station further comprises an ultrasonic washing tub 5, in which the parts can be further cleaned if necessary and in particular can be freed of glass beads adhering to the surface.
  • the parts are in a water bath, to which an anti-corrosion agent can be added.
  • 6 with a drying oven is designated, in which the cleaned parts dried after spraying at the workplace 4 or ultrasonic cleaning can be.
  • a relaxation tank 12 is connected to the first cleaning station 1 and is used to collect cleaning agent and washed-off dirt. This relaxation tank will be described in more detail later with reference to FIG. 4.
  • 44 designates a pump device which serves to keep the cleaning agent used in the cleaning station 3, namely the glass bead slurry, in circulation and to generate a jet pressure sufficient for surface treatment of the parts.
  • the parts are dried in the drying oven 6 for about 20 to 30 minutes.
  • the parts which are then completely bare and dried can then be reassembled at an assembly work station (not shown in FIG. 1) and the complete units can then optionally be provided with an anti-corrosion lacquer layer.
  • an assembly work station not shown in FIG. 1
  • the complete units can then optionally be provided with an anti-corrosion lacquer layer.
  • the work station 7 comprises a work surface 15 for unpacking and dismantling pumps 16, the work surface being formed by gratings and under the grate funnels 17 for collecting oils which may run off from the pump parts.
  • Collecting containers (not shown in FIG. 2) can be arranged under the funnels 17.
  • a transport path designed as a rail track is designated on the at least one transport carriage 19 is movable for the transport of the pump parts to be cleaned.
  • the workplace 7 also includes a filter device 13 which is connected via an exhaust pipe 20 to an exhaust duct 14.
  • the ventilation of the cabin space 8 (not shown in FIG. 2), which includes the entire work station 7, and in the present exemplary embodiment also the first cleaning station 1, takes place via the filter device 13.
  • the filter device 13 will be described in more detail later.
  • the transport ban 18 extends through an inlet opening 21 of a side wall of the first cleaning station 1. This opening 21 can be opened and closed with the aid of a slide 22.
  • the front wall of the first cleaning station 1 is provided with a viewing window 23 through which an operator can observe the parts to be cleaned in the first cleaning station 1. As can be seen in FIG. 3, the viewing window 23 has a wiper 24. Openings 25 are provided in the front wall of the first cleaning station 1 below the viewing window 23. Gloves with extended sleeve parts are attached to these openings, sealing the entire opening circumference against the interior of the first cleaning station.
  • the first cleaning station 1 also has a grate over which the transport path 18 is guided. Below the grate 26 there is a funnel 27 for collecting cleaning agent and rinsed off contaminants, the cleaning agent and the contaminants being able to be discharged via a line 28, as will be described in more detail later with reference to FIG. 4.
  • the top of the first cleaning station 1 is connected to an exhaust air line 58, with one in the exhaust air line immediately above the cleaning station Drop separator, which is designated in FIG. 2 by the reference symbol 29, is provided.
  • a corresponding droplet separator which is designed in the form other than the droplet separator 29 shown in FIG. 2, is designated by 29a.
  • the line 58 is either led into the filter device 13 or a separate filter device.
  • the first cleaning station 1 also has an outlet opening 30 opposite the inlet opening 21, which can be closed by a slide 31. In the interior of the first cleaning station, one or more outlet nozzles for superheated steam / water can be provided, which are not shown in the figures.
  • the intermediate station 2 which in the present exemplary embodiment is directly connected to the first cleaning station 1 by shielding the transport path from the outside environment, likewise has a viewing window 32 in the front wall through which an operator can look into the interior of the intermediate station 2.
  • the intermediate station 2 contains a grate 33, over which the transport path 18 is guided.
  • a collecting device 34 Arranged below the grate 33 is a collecting device 34, which is connected to the funnel 27 of the first cleaning station 1 via a drain line 35.
  • the intermediate station 2 is connected to an exhaust air line 62 at its top.
  • the second cleaning station 3 which is directly connected to the intermediate station 2 and shields the transport ban 18 from the outside environment, has an entry opening 36 through which the transport path 18 is led into the interior of the second cleaning device 3.
  • the inlet opening 36 can be closed by a slide 37.
  • the second cleaning station 3 has a viewing window. This viewing window 38 is with a wiper 39 Mistake.
  • two openings 40 are provided beneath the viewing window 38, to which, like the openings 25 of the first cleaning station 1, gloves with extended sleeve parts connect for an operator reaching into the interior.
  • the second cleaning station 3 has a grate 41, over which the transport path 18 is guided.
  • a funnel 42 is arranged under the grate 41 for collecting cleaning liquid and rinsed dirt particles.
  • the flushing liquid can get into the pump device 44, which ensures that the cleaning liquid circulates and generates a flushing jet.
  • a drain line 59, in which a valve 45 is arranged, is also provided.
  • the second cleaning station 3 has an outlet opening 46 through which the transport path 18 is led out of the interior of the second cleaning station.
  • the outlet opening 46 can be closed off from the outside environment by a slide 47 at the end of the interior of the second cleaning station 3.
  • All slides 22, 31, 37 and 47 are provided on their lower edge with recesses for the engagement of the rails of the transport path 18, so that despite the passage of the transport path through the openings a tight closure of the individual stations is ensured by the slider.
  • One or more rinsing jet nozzles arranged in the interior of the second cleaning station are not shown in the figures.
  • the transport path 18 ends on a work surface formed by a grate 48, which forms part of the spraying work station 4.
  • the spray workplace 4 is provided with bulkheads 49.
  • a funnel 50 is provided for collecting sprayed-off cleaning liquid remaining on the surface of the parts after passing through the second cleaning station.
  • With 51 a container for collecting the collected cleaning liquid is designated.
  • carriages 19 used in the present exemplary embodiment have a transport plate 52 which is designed to be permeable as a grate.
  • the top of the second cleaning station 3 is connected to an exhaust air line 60, in which a drop separator is provided immediately above the cleaning station, which is shown in FIG. 2 with 53 and in FIG. 3, where such a drop separator is shown in the form, is designated 53a.
  • the exhaust air line 60 is led into the filter device 13 or a separate filter device.
  • the droplet separator 53 or 53a is also connected to the exhaust air line 62 of the intermediate station 2. In the present exemplary embodiment, branching is provided in the exhaust air line 26.
  • reference numeral 54 denotes a pump provided in the drain pipe 28 between the first cleaning station 1 and the expansion tank 12.
  • the expansion tank 12 can be connected to three storage tanks 57 via lines 56 which have valves 55.
  • the volume of the storage container 57 is greater than the volume of the expansion tank 12.
  • the expansion tank could also have one or more Pumps for transferring liquid into the storage container must be connected downstream.
  • the pumps 16 are disassembled for regeneration on the work surface 15 formed by grates, wherein any oil that runs off the parts can pass through the grates together with dirt particles and can be collected by the funnels 17 in order to be collected in containers.
  • gases bound to the surfaces of the parts can be released.
  • the suction device 14 with the upstream filter device 13 generates a laminar exhaust air flow directed away from the operators, which largely prevents an operator from coming into contact with the gases. Depending on the intended use of the pumps, these gases can be toxic.
  • the individual parts are loaded onto the carriage 19, with which they are moved via the transport path 18 through the opening 21 into the first cleaning station 1.
  • hot steam and / or water rinsing of the parts to be cleaned arranged on the carriage 19 takes place.
  • an operator can grasp the parts and bring them into the most suitable position for flushing with the help of the gloves attached to the openings 25 without coming into contact with the substances present inside the cleaning station. If necessary, the operator could also move a moveable hot steam / water nozzle for rinsing.
  • the pump 54 is in operation, which rinsed dirt particles and material comprising condensed superheated steam, which has been collected by the funnel 27, and has not yet condensed Extracts hot steam from the interior of the first cleaning station and pumps it into the expansion tank 12.
  • the extracted superheated steam condenses in the expansion tank 12.
  • the expansion tank could also be arranged so that the gravity of the filling material is sufficient to fill the tank. In this case, the pump 12 could be omitted.
  • the expansion tank 12 serves for the intermediate storage of the superheated steam condensate and the rinsed off dirt particles.
  • only an amount of hot steam / amount of hot water corresponding to approximately 20 l of water is required for cleaning a pump.
  • the composition of the rinsed dirt can be very different, so that different disposal methods must also be used.
  • several storage containers with a large capacity can be provided, as in the present exemplary embodiment, in which differently disposed contaminants are kept until they are disposed of.
  • one of the various storage containers 57 can hold the debris from a particular batch of pumps delivered while another batch is selected for another batch.
  • the parts in the first cleaning station can already be largely free of their dirt be freed.
  • the parts After the hot steam / water treatment has taken place, the parts remain in the first cleaning station for a while, gases which are still being released and water mist present in the cleaning station being sucked off through the exhaust air duct 58.
  • the sit down Mist-forming water droplets largely in the droplet separator 29 and 29a. Fogging of the lens 23 during the cleaning process is effectively prevented by the wiper 24, so that a sufficient view through the window 23 into the interior of the cleaning station is ensured.
  • the parts which have already been largely cleaned are moved through the opening 30 into the intermediate station 2 and the slide 31 previously opened for this purpose is closed again.
  • the intermediate station 2 now acts as a lock. Droplets of condensed steam still present on the parts can drip in the intermediate station 2, where they pass through the grate 33 and are collected by the collecting device 34. From the collecting device 34, the liquid can enter the funnel 27 of the first cleaning station via the connecting line 35 and can thus be supplied via the expansion tank 12 to one of the storage tanks 57 for disposal. An operator can observe the largely cleaned parts through the viewing window 32 and, after dripping, judge whether the degree of cleaning is sufficient. If necessary, the parts could be returned to the first cleaning station for subsequent cleaning. While the parts are in the intermediate station 2, gases and vapors, which may still be released from the parts, are extracted by the suction line 62.
  • the largely cleaned parts are moved through the opening 36 into the second cleaning station 3 and the slide 37 and possibly also the slider 47 are pushed down to close the second cleaning station.
  • the parts are removed in the second cleaning station of dirt residues and for surface finishing with a glass bead slurry, in the present exemplary embodiment a glass bead slurry containing water, treated, a flushing jet being directed under pressure onto the parts.
  • an operator can grasp the parts with the aid of the gloves attached to the openings 40 and position them in a suitable manner for rinsing. If necessary, a spray nozzle could also be suitably moved by the operator. The operator can control his actions through the viewing window 38 with the wiper 39.
  • a glass bead slurry with glass beads having a diameter between 0.1 and 0.2 mm is advantageously used.
  • the cleaning liquid with the rinsed dirt residues passes through the grate 41 and is collected by the funnel 42 and passed via line 43 through the circuit maintained by the pump device 44, and through the pump device 44 for reuse to generate one or more flushing jets in the Returned interior of the second cleaning station. Since only a small amount of dirt has to be removed due to the high effectiveness of the cleaning in the first cleaning station, the washing-up liquid charges itself slowly with dirt particles and can be kept in this circuit over very long operating periods before it is discharged via the drain line 59 for regeneration or Disposal must be removed from the circuit. After or already during cleaning, suction takes place through the exhaust air line 60, water droplets being removed from the water mist which has been sucked off in the droplet separator 53 or 53a.
  • the completely cleaned parts are moved out of the cleaning station through the opening 46 and fed to the spray cleaning work station 4, where the transport path 18 ends.
  • the parts are sprayed with a spray gun, from which compressed air or water emerges, while removing cleaning agent residues, ie residues of the glass bead slurry. Some of these residues are intercepted by the bulkheads 49, from where they run off and can pass through the grate 48. These residues are fed to the collecting container 51 via the funnel 50.
  • the removal of cleaning agents could also be carried out in the second cleaning station, so that the spray work station 4 could possibly be omitted.
  • the cleaned parts can be transported with the aid of the crane 11 into the ultrasound washing container 5 in order to be ultrasonically cleaned in a water bath.
  • the cleaned parts are to be fed to the drying oven 6 immediately after the aftertreatment, which may be limited to spraying with the spray gun, where the regeneration treatment is completed with the drying of the parts.
  • the filter device 13 contains several filter stages that can be changed without decontamination.
  • Rotating devices for rotating the parts could be provided in the treatment station.
  • the cleaning section shown can also be used prematurely for the regeneration of assemblies contained therein, such as circulation and ventilation pumps, or the expansion tank 12.
  • the expansion tank 12 could with the storage tanks 57 can also be connected via a single three-way valve.
  • the expansion tank 12 is designed as a removable subassembly, which can also be removed from the cleaning section for regeneration and disposal purposes when it is full.
  • Laminar exhaust air flows in the manner of a curtain surrounding the storage surface can be formed around the storage surface 10 within the cabin 8.
  • the reference numerals 70 and 71 denote protective shields with through openings, the protective shields between a worker and one by the worker object to be treated can be arranged.
  • the reference numeral 82 indicates a suction opening that extends above and along the working surface 15.
  • the protective shields 71 and 70 shown separately in FIGS. 8 and 9 are made in the present exemplary embodiment continuously from a transparent material, preferably plexiglass, and have pairs of through openings 72, 72a and 72b.
  • the access openings are covered with a flexible material, such as rubber.
  • a slot 73, 73a or 73b is formed in the overvoltage, which is provided in the present case as a continuous slot.
  • the slot could also only extend over part of the covering. For example, two intersecting slots could also be provided for each covering.
  • the penetration openings have a relatively elongated rectangular shape, the penetration openings extending vertically in their length.
  • two pairs 73a and 73b of passage openings for different working heights are provided behind the protective shield, depending on the arrangement of an object to be treated.
  • Pass-through openings 72b could, for example, be used by a kneeling worker, while pass-through openings 72a are arranged for a standing worker.
  • the protective shield 70 also has a foot part 74, which gives the protective shield a certain stability. The foot part could be provided with wheels that are not shown in FIGS. 5 and 9 and can be attested, so that the protective shield can be moved easily.
  • the protective shield 71 has various sections 75 to 77, the central section 76, in which the through openings 72 are provided, being inclined like a desk to a worker using the shield.
  • the shield 71 can be movably supported at its upper edge by means not shown in FIGS. 5 and 8, so that the shield 71 can be moved laterally along the working surface 15.
  • the reference numeral 78 indicates a ventilation pipe with a relatively large diameter, which on its the work surface 15 facing peripheral surface is provided with a plurality of fresh air outlet openings in a regular arrangement.
  • the tube 78 which is closed at its ends to form a cylindrical container, is connected via a Supply line 80 supplied with fresh air.
  • the emerging fresh air results in the cabin 8, which includes the work station 7 and the storage area 10, in the entire cabin, largely uniform fresh air flow, as indicated by arrows 81 in FIG. 6.
  • FIG. 7 in which a complete work station according to the present invention is shown, the reference symbol 83 indicates a worker, in front of which a protective shield 71 a is arranged, as has already been described with reference to FIGS. 5 and 8.
  • This protective shield 71a is so movably supported on its upper and lower edge by means of mounting devices (not shown in FIG. 7) that it can be laterally displaced along a working surface 15a.
  • a vacuum pump 16a On the work surface 15a there is an object to be dismantled, in the present case a vacuum pump 16a.
  • a suction opening 82a extends along the edge of the worktop 15a facing away from the worker, through which, in the present exemplary embodiment, air contaminated with pollutants can be extracted with a negative pressure of 0.1 bar.
  • a ventilation pipe 78a is arranged behind and above the worker 83 and has air outlet openings 79a distributed essentially over the peripheral surface facing the worker. Air outlet openings could also be distributed over the entire pipe circumference.
  • air flows emerging in the direction of the cabin walls are then deflected through the cabin walls.
  • the ventilation pipe 78a closed at its ends is supplied with fresh air via a supply pipe 80a.
  • the worker 83 is flowed around from behind, in the present exemplary embodiment obliquely from above, and in particular in front of the protective shield 71a, which is advantageously provided with a larger flow cross-section than the worker, an overpressure arises between the protective shield and the worker due to flow congestion, while in the area
  • the fresh air flowing laterally past the protective shield 71a creates a negative pressure and an increased flow velocity occurs in comparison to the overpressure area in front of the shield and to the areas of the flow located further out.
  • a worker dismantling the pump 16a using the through openings 72a inhales pollutants that are released during dismantling.
  • the protective shield can expediently be sealed at its upper and lower edges against the half space used by the worker.
  • a main flow direction can advantageously be generated, which runs approximately parallel to a connecting line between the head of the worker and the object to be dismantled. This main flow direction is optimal by a fresh air flow directed towards the pollutant emission source is reached from the mouth and nose of the worker, that is to say their respiratory openings.
  • the operator arranges the protective shield 70 in front of the objects arranged on the bearing surface 10 in such a way that the flow flows against the protective shield perpendicularly in accordance with the arrows 81 shown in FIG. 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
EP19920106685 1991-04-19 1992-04-16 Method and device for the regeneration of polluted parts Withdrawn EP0509536A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4112914 1991-04-19
DE4112914A DE4112914C2 (de) 1991-04-19 1991-04-19 Verfahren und Vorrichtung zum Regenerieren schadstoffbelasteter Teile
DE4122699A DE4122699C2 (de) 1991-04-19 1991-07-09 Arbeitsplatz für die Behandlung schadstoffbelasteter Teile
DE4122699 1991-07-09

Publications (2)

Publication Number Publication Date
EP0509536A2 true EP0509536A2 (fr) 1992-10-21
EP0509536A3 EP0509536A3 (en) 1993-06-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920106685 Withdrawn EP0509536A3 (en) 1991-04-19 1992-04-16 Method and device for the regeneration of polluted parts

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EP (1) EP0509536A3 (fr)
DE (2) DE4122699C2 (fr)

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EP0750054A1 (fr) * 1995-06-19 1996-12-27 Praxair S.T. Technology, Inc. Procédé d'érosion de surface de superalliages par un jet liquide
FR2868972A1 (fr) * 2004-04-15 2005-10-21 Bosch Gmbh Robert Dispositif pour loger une pompe subdivisee en parties individuelles et procede pour le nettoyage d'une pompe

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US3019522A (en) * 1958-06-23 1962-02-06 John M Bluth Reformation of metallic surfaces
US3455062A (en) * 1967-01-19 1969-07-15 Arthur H Eppler Abrasive blast system with closed circuit rinse
DE2545031A1 (de) * 1975-10-08 1977-04-14 Kernforschung Gmbh Ges Fuer Verfahren zum reinigen von mit vorzugsweise radioaktivem natrium behafteten komponenten sowie anlage zur durchfuehrung des verfahrens
WO1983002243A1 (fr) * 1981-12-30 1983-07-07 Nutechnomex Ltd Procede et dispositif de decontamination pour un equipement de manipulation de tranches a semiconducteurs
US4547227A (en) * 1984-04-09 1985-10-15 Herter Carl J Method for preparing a steel charge from terneplate scrap metal
US4993199A (en) * 1987-03-30 1991-02-19 Container Products Corporation Portable self-contained decontamination booth
EP0447250A2 (fr) * 1990-03-15 1991-09-18 Electrostatic Technology, Inc. Procédé et dispositif pour nettoyage à vapeur des articles laminés

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750054A1 (fr) * 1995-06-19 1996-12-27 Praxair S.T. Technology, Inc. Procédé d'érosion de surface de superalliages par un jet liquide
FR2868972A1 (fr) * 2004-04-15 2005-10-21 Bosch Gmbh Robert Dispositif pour loger une pompe subdivisee en parties individuelles et procede pour le nettoyage d'une pompe

Also Published As

Publication number Publication date
EP0509536A3 (en) 1993-06-16
DE4122699A1 (de) 1993-01-21
DE9205333U1 (de) 1992-09-17
DE4122699C2 (de) 1996-01-18

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