DE10134313A1 - Reducing solvent emission during operation of air scrubbers for cleaning waste gas in lacquering machines comprises reducing solvent vapors from a lacquering system - Google Patents
Reducing solvent emission during operation of air scrubbers for cleaning waste gas in lacquering machines comprises reducing solvent vapors from a lacquering systemInfo
- Publication number
- DE10134313A1 DE10134313A1 DE2001134313 DE10134313A DE10134313A1 DE 10134313 A1 DE10134313 A1 DE 10134313A1 DE 2001134313 DE2001134313 DE 2001134313 DE 10134313 A DE10134313 A DE 10134313A DE 10134313 A1 DE10134313 A1 DE 10134313A1
- Authority
- DE
- Germany
- Prior art keywords
- lacquering
- solvent
- reducing solvent
- air
- water
- 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.)
- Ceased
Links
- 239000002904 solvent Substances 0.000 title claims abstract description 19
- 238000004140 cleaning Methods 0.000 title claims abstract 4
- 239000002912 waste gas Substances 0.000 title abstract 2
- 239000003973 paint Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000003595 mist Substances 0.000 claims abstract description 4
- 238000010612 desalination reaction Methods 0.000 claims abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 3
- 239000011707 mineral Substances 0.000 claims abstract description 3
- 238000009835 boiling Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 9
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000005201 scrubbing Methods 0.000 abstract description 2
- 150000001722 carbon compounds Chemical class 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000001784 detoxification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PFCHFHIRKBAQGU-UHFFFAOYSA-N ethyl n-propyl ketone Natural products CCCC(=O)CC PFCHFHIRKBAQGU-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Bau- und Betriebsgenehmigungen von Lackierbetrieben erfordern eine Emissionsminimierung nach dem Stand der Technik. Im wesentlichen unter dem Gesichtspunkt der Umweltverträglichkeit wur den daher in zunehmendem Maße Lacksysteme mit organischen Lösungsmitteln durch wässrige Lacksysteme ersetzt. Bestimmte Ansprüche an die Qualität von Beschichtungen machen den Ein satz von lösungsmittelhaltigen Lacksystemen jedoch unvermeidbar.Building and operating permits from paint shops require emissions minimization the state of the art. Essentially from the point of view of environmental compatibility the therefore increasingly lacquer systems with organic solvents by aqueous Paint systems replaced. Certain demands on the quality of coatings make the one However, the use of solvent-based paint systems is unavoidable.
Die Beschichtung von großen, sperrigen Objekten, wie Schiffen, industriellen Anlagenkomponen ten und Flugzeugen muss aus technischen Gründen manuell ausgeführt werden und erfolgt in hier für konstruierten Lackierhallen. Dabei werden Farbnebel und Lösungsmitteldämpfe freigesetzt. Derartige Lackierhallen sind mit leistungsfähigen Ablufteinrichtungen versehen. In großen Lackier hallen kann die Abluftmenge einige 100 000 Nm3/h betragen. Die gesamte Abluft wird vor der Abgabe an die Umgebung gereinigt. Die Abscheidung der Feststoffpartikel erfolgt in Nasswä schern. Dabei kommen industrielle mit Wasser betriebene Luftwäscher zum Einsatz. Gut wasser lösliche Lösungsmitteldämpfe werden außerdem abgeschieden. Der Abscheidegrad richtet sich nach den stoffspezifischen Henry-Konstanten. Die wichtigsten in Lacksystemen verwendeten Lösungs mittel sind Alkohole (Methanol, Ethanol, Propanol, Butanol, Benzylalkohol, Phenol), Ketone (Butanon, Methylpentan-2-on, n-Heptanon, Cyclohexanon), Ester (Ethylacetat, n-Butylacetat, 2- Methoxy-1-methylethylacetat) und Aromaten (Toluol, Ethylbenzol, Xylole, 1,2,3-Trimethylben zol). Beispielhaft sind bei einem typischen und vorschriftsmäßigen Abluftwäscherbetrieb Anteile in Kreislaufwasser/Abluft (Angaben in Prozent) angeführt: n-Butanol 97/3; Butanon 98/2; Butylacetat 87/13; Toluol 27/73; Xylol 30/70. Wie dieses Beispiel zeigt, sind für die Abluftemission besonders Ester und Aromaten problematisch.The coating of large, bulky objects such as ships, industrial plant components and aircraft has to be carried out manually for technical reasons and is done here for constructed paint shops. This releases paint mist and solvent vapors. Painting halls of this type are provided with powerful exhaust air devices. In large paint halls, the amount of exhaust air can be a few 100,000 Nm 3 / h. All exhaust air is cleaned before being released into the environment. The solid particles are separated in wet scrubbers. Industrial water washers are used. Solvent vapors which are readily soluble in water are also separated off. The degree of separation depends on the substance-specific Henry constants. The most important solvents used in paint systems are alcohols (methanol, ethanol, propanol, butanol, benzyl alcohol, phenol), ketones (butanone, methylpentan-2-one, n-heptanone, cyclohexanone), esters (ethyl acetate, n-butyl acetate, 2- Methoxy-1-methylethyl acetate) and aromatics (toluene, ethylbenzene, xylenes, 1,2,3-trimethylbenzene). For a typical and proper exhaust air scrubber operation, examples are given in circulating water / exhaust air (percentages): n-butanol 97/3; Butanone 98/2; Butyl acetate 87/13; Toluene 27/73; Xylene 30/70. As this example shows, esters and aromatics are particularly problematic for exhaust air emissions.
Als Speisewasser für den Wäscherbetrieb, zur Ergänzung der Verdunstungs- und Abschlammwas sermenge wird entsalztes Wasser verwendet. Das Wäscherwasser wird während des Betriebes und danach abgezogen und im Kreislauf gereinigt. Die einzelnen Verfahrensschritte der Kreislaufreini gung sind: Fällung, Flockung, Schwerkraftabscheidung, Filtration und Rückführung in den Speise wasserbehälter. Der ausgeschleuste Dünnschlamm wird über eine Filterpresse eingedickt und als Sonderabfall entsorgt. Wegen der Aufsalzung bei der Kreislaufbehandlung wird die elektrolytische Leitfähigkeit überwacht und bei Grenzwertüberschreitung über eine Leitfähigkeitsweiche ausge schleust und der Abwasserbehandlung (bei Chromat-haltigen Lacksystemen der Chromatentgiftung) zugeführt. Den Stand der Technik beschreibt das Blockfließbild, Zeichnung 1.As feed water for the laundry business, to supplement the evaporation and waste water demineralized water is used. The scrubbing water is during operation and then removed and cleaned in the circuit. The individual procedural steps of the cycle clean The following are: precipitation, flocculation, gravity separation, filtration and recycling in the food water tank. The discharged thin sludge is thickened via a filter press and as Disposed of special waste. Because of the salting in the circulatory treatment, the electrolytic Conductivity monitored and when a limit value is exceeded via a conductivity switch sluice and waste water treatment (for chromate-containing paint systems, the chromate detoxification) fed. The block diagram, drawing 1, describes the state of the art.
Zahlreiche Verfahren haben zum Ziel, eine Emissionsminderung durch Aufkonzentrierung an geeigneten Ab- oder Adsorptionsmitteln und anschließende Desorption und Kondensation zu errei chen. Andere Verfahren arbeiten mit thermischer und/oder katalytischer Nachverbrennung. Aus technischen und wirtschaftlichen Gründen konnten sich diese Verfahren für die beschriebene Prob lemstellung nicht durchsetzen.Numerous processes aim to reduce emissions through concentration suitable absorption or adsorption agents and subsequent desorption and condensation chen. Other processes work with thermal and / or catalytic afterburning. Out For technical and economic reasons, these methods could be used for the described prob Do not enforce the setting.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, von Lackierhallen ausgehende Lösungs mittel- und Geruchsemissionen wesentlich zu verringern. Hierzu wurde nach Zusatzstoffen gesucht, die einen Luftwäscherbetrieb in bekannter Weise ermöglichen, aber im Waschwasser gelöst werden können und den Dampfdruck der in Lacksystemen verwendeten Lösungsmittel im Waschmedium wesentlich herabsetzen. Der Zusatzstoff selbst darf in wässriger Lösung keinen signifikanten Dampfdruck haben. Geeignete Zusatzstoffe wurden mit organischen Verbindungen gefunden, die neben einer oder mehrerer Alkoholfunktionen eine oder mehrere Alkoxyfunktionen enthalten. Eine handelsübliche Industriechemikalie, die den Anforderungen entspricht ist 2-(2-Butoxyethoxy)ethanol ("Butyldiglycol").The present invention has for its object solutions from painting halls to significantly reduce medium and odor emissions. For this, additives were searched for, which enable an air washer operation in a known manner, but are solved in the wash water can and the vapor pressure of the solvents used in paint systems in the washing medium significantly reduce. The additive itself must not contain any significant in aqueous solution Have vapor pressure. Suitable additives have been found with organic compounds that contain one or more alkoxy functions in addition to one or more alcohol functions. A commercially available industrial chemical that meets the requirements 2- (2-butoxyethoxy) ethanol ("butyl diglycol").
Der Dampfdruck aller erwähnten Lösungsmittelkomponenten verringert sich unter sonst gleichen Bedingungen in Abhängigkeit der Höhe der Zugabe an Butyldiglycol. Betrachtet wurden Anteile von 10, 20 und 50 Gew.-% Butyldiglycol. Dabei ergibt sich beispielhaft folgender Zusammenhang (Tabelle 1) für die Henry-Konstanten KH(T) (Angabe in molfl/(dm3 fl.atm) bei 20°C.The vapor pressure of all solvent components mentioned decreases under otherwise identical conditions depending on the amount of butyl diglycol added. Fractions of 10, 20 and 50% by weight of butyl diglycol were considered. The following relationship (Table 1) for the Henry constants K H (T) (data in mol fl / (dm 3 fl .atm) at 20 ° C.
Hieraus ergibt sich beispielhaft für die Verteilung der Lösungsmitteldämpfe bei Luftwäscherbetrieb, gem. o. b. Betrachtung (Tabelle 2).This results, for example, in the distribution of solvent vapors in air washer operation, gem. if. Consideration (Table 2).
Das Ziel der Emissionsreduzierung von Lösungsmitteldämpfen wird durch das beschriebene Ver fahren erreicht. Für einen wirtschaftlichen Betrieb ist es aber erforderlich, die Waschflüssigkeit im Kreislauf zur Wiederverwendung aufzubereiten. Nach der Feststoffabscheidung gemäß dem beschriebenen Verfahren nach dem Stand der Technik (Fällung, Flockung, Schwerkraftabschei dung), bieten sich thermische Trennverfahren zur Entfernung und Rückgewinnung der Lösungs mittel an. Dabei sind Verdampfer jedweder Konstruktion prinzipiell geeignet.The goal of reducing emissions of solvent vapors is described by Ver drive reached. For economical operation, however, it is necessary to wash the washing liquid in the Prepare the circuit for reuse. After the solid separation according to described methods according to the prior art (precipitation, flocculation, gravity separation dung), there are thermal separation processes for removing and recovering the solutions medium on. In principle, evaporators of any construction are suitable.
Angestrebt werden muss eine möglichst vollständige Kreislaufführung der Waschflüssigkeit. Dabei müssen ebenfalls gelöste mineralische Inhaltsstoffe aus dem Kreislauf ausgeschleust werden. Mine ralische Inhaltsstoffe stammen aus Feststoffartikeln der Lacksysteme (z. B. Chromate), aus der Raumluft und aus der Zugabe von Fällungs- und Flockungsmitteln. Die Entsalzung im Kreislauf erfolgt zweckmäßigerweise über K/A-Ionenaustausch. Die Regeneration der Kationen- und Anio nenaustauscher mit Salzsäure und Natronlauge wird in üblicher Weise durchgeführt, jedoch wird der Systeminhalt an Waschflüssigkeit vorher mit Frischwasser in das Kreislaufsystem verdrängt. Regenerations- und Spülwasser werden der Abwasseraufbereitung (gfs. Chromatentgiftung) zuge führt.The aim is to ensure that the washing liquid is circulated as completely as possible. there dissolved mineral ingredients must also be removed from the cycle. mine ralic ingredients come from solid particles of the paint systems (e.g. chromates) from which Indoor air and from the addition of precipitants and flocculants. Desalination in a cycle expediently takes place via K / A ion exchange. Regeneration of the cation and anio nenaustauscher with hydrochloric acid and sodium hydroxide solution is carried out in the usual manner, however the system content of washing liquid is previously displaced into the circulatory system with fresh water. Regeneration and rinsing water are added to the wastewater treatment (if necessary, chromate detoxification) leads.
Die Anordnung der Verfahrenskomponenten gem. dieser Erfindung beschreibt das Blockfließbild, Zeichnung 2.The arrangement of the process components acc. This invention describes the block flow diagram Drawing 2.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001134313 DE10134313A1 (en) | 2001-07-14 | 2001-07-14 | Reducing solvent emission during operation of air scrubbers for cleaning waste gas in lacquering machines comprises reducing solvent vapors from a lacquering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001134313 DE10134313A1 (en) | 2001-07-14 | 2001-07-14 | Reducing solvent emission during operation of air scrubbers for cleaning waste gas in lacquering machines comprises reducing solvent vapors from a lacquering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10134313A1 true DE10134313A1 (en) | 2002-04-11 |
Family
ID=7691810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2001134313 Ceased DE10134313A1 (en) | 2001-07-14 | 2001-07-14 | Reducing solvent emission during operation of air scrubbers for cleaning waste gas in lacquering machines comprises reducing solvent vapors from a lacquering system |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10134313A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010054212A1 (en) * | 2010-12-11 | 2012-06-14 | Eisenmann Ag | Plant for painting objects |
-
2001
- 2001-07-14 DE DE2001134313 patent/DE10134313A1/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010054212A1 (en) * | 2010-12-11 | 2012-06-14 | Eisenmann Ag | Plant for painting objects |
| US9321069B2 (en) | 2010-12-11 | 2016-04-26 | Eisenmann Ag | System for painting objects |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8131 | Rejection | ||
| 8131 | Rejection |