EP1038992B1 - Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel - Google Patents
Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel Download PDFInfo
- Publication number
- EP1038992B1 EP1038992B1 EP00106230A EP00106230A EP1038992B1 EP 1038992 B1 EP1038992 B1 EP 1038992B1 EP 00106230 A EP00106230 A EP 00106230A EP 00106230 A EP00106230 A EP 00106230A EP 1038992 B1 EP1038992 B1 EP 1038992B1
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- EP
- European Patent Office
- Prior art keywords
- solvent
- working chamber
- solvent mixture
- pressure
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/04—Apparatus
Definitions
- the invention relates to a method for the surface treatment of parts a solvent or a solvent mixture in a working chamber, especially for cleaning parts with the features of the preamble of Claim 1, and a system for performing the method, which an evaporator and a condenser to evaporate or condense of the solvent or of the solvent mixture, with the features the preamble of claim 14.
- solvents containing chlorinated hydrocarbons such as perchlorethylene ( " Per") and trichlorethylene ( “ Tri"), with which the metal parts are rinsed, have long been used. Since these substances are both harmful to the environment and harmful to health, the metal parts are usually treated in a tightly closable working chamber, which is vented and ventilated via an adsorption / desorption unit.
- the parts to be cleaned are placed, for example, in perforated boxes in the working chamber, where they are immersed in the solvent or solvent mixture and, if necessary, moved. After the cleaning process, the parts usually remain in the working chamber for drying so that only the smallest possible amount of solvent gets into the environment when the chamber is opened.
- a method and an installation in which a solvent or solvent mixture in closed circuits, optionally leading through the working chamber is held and simultaneously by means of evaporation and subsequent Condensation can be prepared, the evaporation at a first, low pressure and condensing at a second, higher pressure is basically known from WO 93/17149.
- the invention has for its object to be an inexpensive to implement Process for the surface treatment of parts, within the scope of which gentle and energy-efficient preparation of the solvent used or solvent mixture (which of course also includes water or a mixture on an aqueous basis) is possible, as well as a plant for implementation propose the method that enables energy savings and also manages with a few units or components, so that they can be manufactured inexpensively.
- the method according to the invention keeps the solvent or solvent mixture in closed loops, being within these loops be processed by evaporation and subsequent condensation can, the evaporation at a first, low pressure and the condensation at a second, higher pressure occurs while the working chamber can be coupled into the circuits if necessary.
- One of the circuits of the system according to the invention comprises an evaporator and a condenser for the solvent or solvent mixture as well a compressor arranged between them, the compressor one the first low pressure on the inlet side which acts on the evaporator and a second higher output side, which acts on the capacitor Generates pressure.
- the working chamber is in this cycle if necessary be coupled.
- the compressor can also with the appropriate design Function of the capacitor with take over what the expenditure on equipment decreases.
- the energy efficiency of the method can be increased significantly if distilling the solvent or solvent mixture in two stages at different pressures is carried out: Due to the thermodynamic relationships, this is possible Solvent under low pressure at low temperatures in the gaseous State over, whereas it is under higher pressure at higher temperatures changes to the liquid state of matter; the energy requirement for that Evaporation decreases accordingly if this takes place at lower pressure, at the same time the cooling capacity required for the condensation is all the smaller can be, the higher the pressure prevailing in the condenser.
- the solvent or solvent mixture for the invention Evaporation is heated the less the lower the pressure this place is.
- the one that follows the proposed method essentially continuous preparation of the solvent or solvent mixture can therefore preferably be carried out more gently than one Distillation under atmospheric pressure.
- the compressor located between the evaporator and the condenser the system according to the invention provides the necessary for the invention Pressure difference between evaporator and condenser on a particularly simple and efficient way.
- the working chamber is, if necessary, in the solvent circuit coupled in, the parts to be treated rinsed with solvent be introduced into the chamber by adding fresh solvent and after the surface treatment of the parts brought into the working chamber on others Body is re-routed.
- working chamber not narrowly defined: A working chamber in the sense of the invention can also be formed by the part to be cleaned itself, namely when it contains sealable cavities, the inner walls of which are cleaned should. These cavities function in the process according to the invention or the corresponding system as a working chamber.
- the first, low pressure for evaporating the solvent is preferably or solvent mixture below atmospheric pressure, preferably between about 0.001 bar and 0.95 bar, while the second, higher Pressure for condensing above atmospheric pressure is preferred is between 2 bar and 15 bar, but in particular between 3 bar and 8 bar.
- the evaporator can heated with the waste heat of the condenser and the condenser with that cooled evaporators coming from the evaporator are cooled.
- the simultaneous heating of the evaporator by means of external heating and cooling the Condenser by means of usually electrically operated cooling unit thereby largely or even completely eliminated. This leads to significant energy savings, which especially with aqueous systems, in particular with Use of water as a solvent, due to the high specific Heat capacity of water considerably are. No separate means must be provided as the heat transfer medium because the condensate can serve as a heat carrier.
- the invention offers further advantages in that the working chamber directly with freshly condensed and / or vaporous solvent or solvent mixture can be applied, if desired, even under high pressure. This has a positive effect on the cleaning result, since the purity of the so in the working chamber introduced solvent is very high and that in the previous State of the art, completely unknown, high operating pressure if necessary enables additional cleaning effects.
- the first low pressure present according to the invention can be used. Because here the evaporation of the solvent or solvent mixture is made significantly easier due to the thermodynamic relationships the drying of the parts is advantageously quick.
- the working chamber can be ventilated with ambient air after the surface treatment become. It is useful if the working chamber immediately afterwards is sucked off - preferably at the first, low pressure -, whereby Vapor the extracted air through an adsorption filter of solvent or solvent mixture is freed and in again for aeration the working chamber can be returned. By flushing the working chamber in this way can present a very low concentration of solvent vapors opening the working chamber can be achieved, which is when using CHC solvents is essential for occupational safety.
- the adsorption filter required especially when using CHC solvents is preferably an activated carbon filter, which also with changing pressures can be applied:
- the loading of the activated carbon with adsorbed solvents is significantly improved if the adsorption takes place at higher pressure, while the desorption required for the regeneration of the filter of solvents is significantly facilitated if this is lower Pressure is performed. Desorption is also supported when the filter is heated during this operation, for example by the waste heat of Compressor.
- An activated carbon filter is particularly suitable for changing pressures which the activated carbon is introduced as a bed in a tube bundle. Here is the Activated carbon is also particularly easy to heat.
- the system should be connected to a valve for emergency ventilation, if necessary to be able to reduce existing, high pressures in the shortest possible time; this emergency vent is preferably done via the adsorption filter to reduce environmental pollution or Minimize health risks even with emergency ventilation.
- the compressor present in the system according to the invention is preferably a Liquid ring vacuum compressor with a rotary vane pump if required can be combined.
- the liquid ring vacuum compressor outlines all from the fact that it is operated directly with the operating fluid and the Condensation in the operating fluid takes place.
- the solvent or solvent mixture used is preferably essentially from water or aqueous cleaners. But it can also Chlorinated hydrocarbons, especially tetrachlorethylene and / or trichlorethylene can be used as the basis for the solvent or solvent mixture. in the Other solvents, e.g. modified Alcohols. In aqueous systems, however, the one according to the invention has an effect Energy saving is most obvious because water is approx. Evaporation energy required ten times higher than, for example, tetrachlorethylene.
- the single figure shows a schematic representation of a preferred embodiment the system according to the invention. It is a system for Cleaning metal parts using a chlorinated hydrocarbon solvent. It mainly consists of a compressor 11, an evaporator 12, a working chamber 13, a reservoir 14, a condenser 15 and an adsorption filter 16. These units are via a piping system connected, the two filters 17a and 17b, the first tank 14a and one are assigned to a second tank 14b of the storage container 14, a measuring computer 38 and contains a number of valves 19 to 37. When operating such a system with aqueous solvents, the adsorption filter 16 can be omitted.
- the evaporator 12 and the condenser 15 are with a separate piping system connected for a heat transfer circuit, the support heater 45th for the evaporator 12, a pump 46 and a cooler 47 for the condenser 15 has.
- the heat transfer medium used is preferably water.
- the evaporator 12 is for continuous evaporation of the solvent provided under vacuum, at pressures from 0.01 to 0.95 bar. impurities the solvent, such as lubricants, accumulate in the bottom of the evaporator 12 on and can be drained or distilled separately if necessary.
- the continuous evaporation under vacuum can be essential at one lower temperature than under atmospheric pressure, which on the one hand for the solvent is very gentle and on the other hand enables the evaporator 12 to operate with the waste heat of the capacitor 15. The solvent vapor is sucked in by the compressor 11.
- the compressor 11 is a combination of a rotary vane pump and a liquid ring vacuum compressor, for continuous, multi-level compression of solvent vapors, if necessary with the addition of air is. For example, it generates a vacuum of up to 10 mbar and an overpressure of approx. 6 bar on the output side.
- the compressed solvent vapor via a controlled three-way valve 18 either the adsorption filter 16, the condenser 15 or, controlled by the valve 23, equal to the reservoir 14 fed.
- the condenser 15 is designed as a pressure vessel. Cooling the condenser 15 takes place via the separate heat transfer circuit with that in the evaporator 12 cooled water; if necessary, the water in the cooler 47 is previously further cooled down.
- the solvent vapor is in the condenser 15 at pressures condensed from about 3 to 8 bar. This condenses due to the high pressure Solvent at a higher dew point temperature than under atmospheric pressure out. As a result, the water coming from the evaporator 12 is sufficient to cool the Condensate normally.
- the condensate is in a droplet separator 39 collected and from any water that is present, in particular through Humidity occurs separately. Then the condensed solvent either via the controlled valve 24 in the reservoir 14 or passed directly into the working chamber 13 via the controlled valve 22.
- the working chamber 13 is designed as a pressure vessel, for example with a rotatable and swiveling basket holder, in which a work basket is added is (not shown in the drawing).
- the metal parts to be cleaned are from Hand or with an automatic loading device, preferably in Hole boxes introduced into the working chamber 13 and this by means of a sliding door 41 closed.
- the sliding door 41 is preferred equipped with a toggle lock.
- Liquid solvent can flow through the valve 28 from the reservoir 14, and via the valve 27 can optionally freshly condensed liquid solvent from the condenser 15, solvent vapor from the compressor 11 or purified air from the adsorption filter 16 are introduced into the working chamber 13.
- the valve 29 enables direct Ventilation of the working chamber 13 with ambient air. Via an outlet 42 at the bottom of the working chamber 13 can solvent after the cleaning process removed from the working chamber and via the valves 30 and 31 into the reservoir 14 are directed.
- the valve 26 finally enables a direct connection the working chamber 13 to the inlet side of the compressor 11.
- the reservoir 14 is formed in two parts, with a first tank 14a and a second tank 14b, which are separated from one another by an overflow 44.
- the tanks 14a and 14b are removed from the working chamber 13 in the general contaminated solvent.
- the second tank 14b via the valve 24 fresh condensate from the condenser 15 and - for pressurization - via the valve 23 solvent vapor directly the compressor 11 are initiated. That from the second tank 14b to the first Solvent overflowing in tank 14a dilutes the solvents heated by a tank heater 43. Via the valves 34 and 28 or 35 and 28 can over liquid solvent from the tank 14a or 14b a filter 17a or 17b are pressed into the working chamber 13.
- About the controlled Valve 32 can be the evaporator 12 liquid solvent or Evacuation of reservoir 14 - solvent vapor from the first tank 14a. There is also liquid solvent from the tanks 14a and 14b via the filters 17a and 17b and via the valves 36 and 37 into the evaporator 12 transferable.
- the adsorption filter 16 (only required in CHC systems) is finally as Pressure vessel with an activated carbon fixed bed designed as an adsorbent.
- the activated carbon is located as a bed in tube bundles 40.
- the adsorption filter 16 is under pressure, whereby the absorption capacity of the activated carbon increases considerably.
- the adsorption filter 16 is via the two three-way valves 18 and 21 directly to the compressor 11 connectable, so that it is either pressurized or vacuum can be:
- the regeneration of the activated carbon takes place under vacuum, if necessary with additional heating of the activated carbon with the waste heat from the compressor 11 via a heating tube 48, which considerably accelerates the desorption of the solvent becomes.
- the adsorption filter 16 can be reversed of the three-way valve 21 are connected to the condenser 15. About the Valves 27 and 20, the adsorption filter 16 can be connected to the working chamber 13, so that there passed through the adsorption filter 16 of solvent vapors cleaned air can be introduced.
- Liquid solvent is filled into the storage container 14 via the valves 36 and 37 also reaches the evaporator 12.
- the compressor 11 is started and the valve 33 opened so that the evaporator 12 is evacuated.
- the pump 46 which serves to circulate the heat transfer medium water, and the auxiliary heater 45 are put into operation.
- the water heated by the auxiliary heater 45 becomes passed through the evaporator 12, causing the liquid solvent therein evaporates and is sucked in by the compressor 11.
- the compressor 11 compresses the suctioned solvent vapor to a pressure of approx. 3 to 8 bar. If necessary, additional air can be supplied via the valves 26 and 29.
- the solvent vapor compressed by the compressor 11 is opened by opening the Valves 18 and 23 passed into the reservoir 14. This will result in the reservoir 14 generates an overpressure, for example with approximately 5 bar.
- the valve 32 remains closed.
- valves 34 and 28 By opening valves 34 and 28, liquid solvent is removed from the tank 14a pressed into the working chamber 13, since these are loaded with metal parts and the closing of the sliding door 41 is still under atmospheric pressure. In this way, rough impurities of the solvent are retained in the filter 17a. In order to flood the working chamber 13 with solvent, it can are vented to the compressor 11 via the valve 26.
- the metal parts arranged in a work basket in the work chamber 13 are undergo primary cleaning by spraying liquid solvent.
- a level controller (not shown) Metal parts cleaned in the immersion bath. This is preferably done under rotation and Swiveling movements of the basket in the solvent bath.
- the one present in the storage container 14 becomes Overpressure is released via valve 32 and, if necessary, a vacuum is generated. Then the valve 30 is opened and the working chamber 13 via the Valves 19, 20 and 27 are vented so that the solvent flows into the tank 14a.
- the compressor 11 takes care of the generation of the transport operations pressure differences used for processing the solvent, by compressing the solvent vapor drawn from the evaporator 12 conducts into the condenser 15 via the valve 18.
- the capacitor 15 will of the water cooled in the evaporator 12, its temperature if necessary is further lowered by the additional cooler 47, cooled; the waste heat of the In turn, capacitor 15 provides for heating the evaporator 12. If the excess pressure generated by the compressor 11 in the reservoir 14 is no longer required can be fresh by closing the valve 23 and opening the valve 24 condensed solvent from the condenser 15 into the storage container 14 be initiated by means of a pressure difference. So the solvent becomes continuous distilled.
- the freshly condensed solvent can be closed by closing valves 23 and 24 and opening the valve 22 directly and preferably under high pressure (originating from the compressor 11) passed into the working chamber 13 and sprayed there, for example become.
- the required venting of the working chamber 13 takes place via the valve 26.
- the condensate is of high purity, which makes it primarily suitable for the post-cleaning of the metal parts is suitable.
- Solvent vapor can be drawn directly from the compressor via the valves 18, 23, 30 and 31 11 are passed into the working chamber, preferably under high pressure. Here, too, any necessary ventilation of the working chamber 13 takes place via valve 26. This high pressure steam rinsing is suitable for a final Fine cleaning of the metal parts and / or for heating them to a accelerate subsequent drying.
- valve 26 the compressor 11 evacuates solvent vapor and air has entered the working chamber 13 by the loading. After reaching one Minimum pressure, valve 27 is opened at the end of the drying process, so that outside air is brought into the working chamber until atmospheric pressure is reached 13 streams.
- the working chamber 13 is opened by opening the valves 19, 20, 26 and 27 with ambient air rinsed.
- the solvent concentration is monitored during the air purge in that the solvent vapor / air mixture drawn off by the compressor 11 from the working chamber 13 is passed through the measuring computer 38 via the valve 25.
- the measuring computer 38 only releases the sliding door 41 of the working chamber 13 when the prescribed limit of the solvent concentration was undershot becomes.
- Process steps (g), (h) and (i) are in the present example one with CHC solvents operated system makes sense; when operating a system with aqueous These process steps are easily dispensable for solvents.
Description
- 11
- Verdichter
- 12
- Verdampfer
- 13
- Arbeitskammer
- 14
- Vorratsbehälter
- 14a
- Tank (erster)
- 14b
- Tank (zweiter)
- 15
- Kondensator
- 16
- Adsorptionsfilter
- 17a
- Filter
- 17b
- Filter
- 18
- Dreiwegeventil
- 19..37
- Ventile
- 38
- Meßcomputer
- 39
- Tropfenabscheider
- 40
- Rohrbündel
- 41
- Schiebetür
- 42
- Ablauf (von 13)
- 43
- Tankheizung
- 44
- Überlauf
- 45
- Stützheizung
- 46
- Pumpe
- 47
- Kühler
- 48
- Heizrohr
Claims (28)
- Verfahren zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel oder einem Lösungsmittelgemisch in einer Arbeitskammer, insbesondere zur Reinigung von Metallteilen,
wobei das Lösungsmittel oder Lösungsmittelgemisch in geschlossenen, wahlweise durch die Arbeitskammer führenden Kreisläufen gehalten wird und innerhalb dieser Kreisläufe mittels Verdampfen und anschließendem Kondensieren aufbereitet werden kann, wobei das Verdampfen bei einem ersten, niedrigen Druck und das Kondensieren bei einem zweiten, höheren Druck erfolgt,
dadurch gekennzeichnet, daß für das Verdampfen des Lösungsmittels oder Lösungsmittelgemisch zumindest teilweise die beim Kondensieren erzeugte Wärme verwendet wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der erste, niedrige Druck unterhalb des Atmosphärendrucks gehalten wird.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der zweite, höhere Druck oberhalb des Atmosphärendrucks gehalten wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der erste, niedrige Druck im Bereich zwischen 0,001 bar und 0,95 bar gehalten wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der zweite, höhere Druck im Bereich zwischen 2 bar und 15 bar, vorzugsweise zwischen 3 bar und 8 bar gehalten wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein für das Kondensieren des Lösungsmittels oder Lösungsmittelgemischs verwendeter Kondensator zumindest teilweise durch einen beim Verdampfen des Lösungsmittels oder Lösungsmittelgemischs abgekühlten Wärmeträger gekühlt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Erzeugung des ersten und des zweiten Drucks durch einen zwischen einem Verdampfer und einem Kondensator angeordneten Verdichter erfolgt, oder das Kondensieren in einem Verdichter vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Lösungsmittel oder Lösungsmittelgemisch mittels der im Kreislauf herrschenden Druckunterschiede transportiert wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Lösungsmittel oder Lösungsmittelgemisch in mindestens einem in einen der Kreisläufe eingebundenen Vorratsbehälter in flüssigem Aggregatzustand vorgehalten wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Oberflächenbehandlung der Teile in der Arbeitskammer wahlweise mit frisch kondensiertem Lösungsmittel oder Lösungsmittelgemisch vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Teile in der Arbeitskammer nach ihrer Oberflächenbehandlung beim ersten, niedrigen Druck getrocknet werden.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Arbeitskammer nach Beendigung der Oberflächenbehandlung mit Umgebungsluft belüftet und nach der Belüftung abgesaugt wird, wobei die abgesaugte Luft über einen Adsorptionsfilter von Lösungsmittel- oder Lösungsmittelgemischdämpfen befreit wird und für eine erneute Belüftung wieder in die Arbeitskammer zurückgeführt werden kann, und wobei der Adsorptionsfilter für eine Adsorption des Lösungsmittels oder Lösungsmittelgemischs mit dem zweiten, höheren Druck und für eine Desorption des Lösungsmittels oder Lösungsmittelgemischs mit dem ersten, niedrigen Druck beaufschlagt wird.
- Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daβ Wasser oder ein Gemisch auf wässriger Basis als Lösungsmittel verwendet wird.
- Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel oder einem Lösungsmittelgemisch, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 13,
mit einer Arbeitskammer (13) für die Oberflächenbehandlung, einem Verdampfer (12) zum Verdampfen des Lösungsmittels oder Lösungsmittelgemischs und einem Kondensator (15) zum Kondensieren des verdampften Lösungsmittels oder Lösungsmittelgemischs,
wobei das Lösungsmittel oder Lösungsmittelgemisch in geschlossenen Kreisläufen gehalten ist, von denen einer den Verdampfer (12) und den Kondensator (15) sowie einen zwischen diesen angeordneten Verdichter (11) beinhaltet, wobei der Verdichter (11) einen eingangsseitigen, den Verdampfer (12) beaufschlagenden, ersten niedrigen Druck und einen ausgangsseitigen, den Kondensator (15) beaufschlagenden, zweiten höheren Druck erzeugt, während die Arbeitskammer (13) bedarfsweise in die Kreisläufe einkoppelbar ist,
dadurch gekennzeichnet, daß zwischen dem Verdampfer (12) und dem Kondensator (15) ein Wärmeträgerkreislauf zum Kühlen des Kondensators (15) und zum Erwärmen des Verdampfers (12) vorgesehen ist. - Anlage nach Anspruch 14, dadurch gekennzeichnet, daß der erste, niedrige Druck unterhalb des Atmosphärendrucks liegt.
- Anlage nach einem der Ansprüche 14 oder 15, dadurch gekennzeichnet, daß der zweite, höhere Druck oberhalb des Atmosphärendrucks liegt.
- Anlage nach Anspruch 15, dadurch gekennzeichnet, daß der erste, niedrige Druck in einem Bereich zwischen 0,001 bar und 0,95 bar liegt.
- Anlage nach Anspruch 16, dadurch gekennzeichnet, daß der zweite, höhere Druck in einem Bereich zwischen 2 bar und 15 bar, vorzugsweise zwischen 3 bar und 8 bar liegt.
- Anlage nach einem der Ansprüche 14 bis 18, dadurch gekennzeichnet, daß das Lösungsmittel oder Lösungsmittelgemisch mittels der vom Verdichter (11) erzeugten Druckunterschiede transportierbar ist.
- Anlage nach einem der Ansprüche 14 bis 19, dadurch gekennzeichnet, daß mindestens ein Vorratsbehälter (14) für das Lösungsmittel oder Lösungsmittelgemisch vorhanden ist.
- Anlage nach Anspruch 20, dadurch gekennzeichnet, daß der Vorratsbehälter (14) zum Einleiten und/oder zum Ausleiten von Lösungsmittel oder Lösungsmittelgemisch in die Arbeitskammer (13) mit dieser verbindbar ist.
- Anlage nach einem der Ansprüche 14 bis 21, dadurch gekennzeichnet, daß der Kondensator (15) zum Einleiten von frisch kondensiertem Lösungsmittel oder Lösungsmittelgemisch in die Arbeitskammer (13) mit dieser verbindbar ist.
- Anlage nach einem der Ansprüche 14 bis 22, dadurch gekennzeichnet, daß ein Ventil (20) zum Belüften der Arbeitskammer (13) vorhanden ist.
- Anlage nach Anspruch 23, dadurch gekennzeichnet, daß der Verdichter (11) zum Spülen der Arbeitskammer (13) mit dieser verbindbar und ein Adsorptionsfilter (16) zum Reinigen von aus der Arbeitskammer (13) abgesaugter Luft von Lösungsmittel- oder Lösungsmittelgemischdämpfen vorhanden ist.
- Anlage nach Anspruch 24, dadurch gekennzeichnet, daß der Adsorptionsfilter (16) für eine Adsorption von Lösungsmittel oder Lösungsmittelgemisch mit dem zweiten, höheren Druck und für eine Desorption des Lösungsmittels oder Lösungsmittelgemischs mit dem ersten, niedrigen Druck beaufschlagbar ist.
- Anlage nach einem der Ansprüche 24 oder 25, dadurch gekennzeichnet, daß der Adsorptionsfilter (16) ein Aktivkohlefilter ist, bei welchem die Aktivkohle als Schüttung in Rohrbündel (40) eingebracht ist.
- Anlage nach einem der Ansprüche 14 bis 26, dadurch gekennzeichnet, daß der Verdichter (11) ein Flüssigkeitsringvakuumverdichter ist, oder aus einer Kombination eines Flüssigkeitsringvakuumverdichters mit einer Drehschieberpumpe besteht.
- Anlage nach einem der Ansprüche 14 bis 27, dadurch gekennzeichnet, daß das Lösungsmittel oder Lösungsmittelgemisch im wesentlichen aus Wasser oder aus wässrigen Reinigern besteht.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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DE19913244 | 1999-03-24 | ||
DE19913244 | 1999-03-24 | ||
DE19939032A DE19939032A1 (de) | 1999-03-24 | 1999-08-18 | Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel |
DE19939032 | 1999-08-18 |
Publications (2)
Publication Number | Publication Date |
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EP1038992A1 EP1038992A1 (de) | 2000-09-27 |
EP1038992B1 true EP1038992B1 (de) | 2003-06-04 |
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EP00106230A Expired - Lifetime EP1038992B1 (de) | 1999-03-24 | 2000-03-22 | Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel |
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EP (1) | EP1038992B1 (de) |
AT (1) | ATE242344T1 (de) |
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DE202012103894U1 (de) * | 2012-10-11 | 2014-01-15 | Dürr Systems GmbH | Oberflächenbehandlungsvorrichtung |
DE102018121915B3 (de) * | 2018-09-07 | 2020-02-13 | Dyemansion Gmbh | Verfahren zur Oberflächenbehandlung von Formteilen |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5232476A (en) * | 1990-09-12 | 1993-08-03 | Baxter International Inc. | Solvent recovery and reclamation system |
US5304253A (en) * | 1990-09-12 | 1994-04-19 | Baxter International Inc. | Method for cleaning with a volatile solvent |
US5415193A (en) * | 1992-11-13 | 1995-05-16 | Taricco; Todd | Pressure controlled cleaning system |
DE4329178B4 (de) * | 1993-08-30 | 2006-11-09 | EMO Oberflächentechnik GmbH | Dampfphasenreinigung |
IL126862A0 (en) * | 1998-01-14 | 1999-09-22 | H M E Separation Technologies | A system for collecting smoke or odors from open spaces |
-
2000
- 2000-03-22 EP EP00106230A patent/EP1038992B1/de not_active Expired - Lifetime
- 2000-03-22 AT AT00106230T patent/ATE242344T1/de active
Also Published As
Publication number | Publication date |
---|---|
EP1038992A1 (de) | 2000-09-27 |
ATE242344T1 (de) | 2003-06-15 |
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