DE3428300C2 - Process for the recovery of water-based paints - Google Patents

Process for the recovery of water-based paints

Info

Publication number
DE3428300C2
DE3428300C2 DE3428300A DE3428300A DE3428300C2 DE 3428300 C2 DE3428300 C2 DE 3428300C2 DE 3428300 A DE3428300 A DE 3428300A DE 3428300 A DE3428300 A DE 3428300A DE 3428300 C2 DE3428300 C2 DE 3428300C2
Authority
DE
Germany
Prior art keywords
water
paint
ultrafiltration
recovery
circulation
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.)
Revoked
Application number
DE3428300A
Other languages
German (de)
Other versions
DE3428300A1 (en
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
EISENMANN MASCHINENBAU KG (KOMPLEMENTAER: EISENMAN
Original Assignee
Eisenmann Anlagenbau GmbH and Co KG
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
Application filed by Eisenmann Anlagenbau GmbH and Co KG filed Critical Eisenmann Anlagenbau GmbH and Co KG
Priority to DE3428300A priority Critical patent/DE3428300C2/en
Publication of DE3428300A1 publication Critical patent/DE3428300A1/en
Application granted granted Critical
Publication of DE3428300C2 publication Critical patent/DE3428300C2/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/462—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material and separating the excess material from the washing liquid, e.g. for recovery

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren nach dem Ober­ begriff des Hauptanspruchs, also auf die Rückgewinnung von Wasserlacken aus mit wasserberieselten Wandungs- sowie Bo­ denflächen bestehenden Spritzkabinen und Naßabscheidung der Farbnebel aus der Luft, durch Kreislaufführung des an­ fallenden Lack-Wassergemisches über eine Ultrafiltrations­ einheit. The invention relates to a method according to the Ober concept of the main claim, i.e. the recovery of Water-based paints made with water-sprinkled walls and Bo existing spray booths and wet separation the color mist from the air, by recycling the falling paint-water mixture via an ultrafiltration unit.  

Dienlich zu diesem Zwecke sollen dabei u. a. ein Verfahren und eine Vorrichtung sein, wie sie in der DE-OS 32 27 227 beschrieben sind und bei denen das im Kreislauf geführte Berieselungswasser über ein sogenanntes rückspülbares Ul­ trafilter aufbereitet wird. Versuche haben jedoch gezeigt, daß ein solches Verfahren mit normalem Wasser nicht durch­ führbar ist, da das sogenannte Overspray bei Kontakt mit normalem Leitungswasser ausflockt und unbrauchbar wird. Mit dem Verfahren und der Anlage gemäß der zuvorgenannten Schutzrechtsveröffentlichung kann also lediglich ein Aus­ filtern des Overspray aus dem Berieselungswasser, nicht aber eine Rückgewinnung von ohne weiterer Nachbehandlung wieder verwendbaren Wasserlacks, durchgeführt werden.Serving for this purpose u. a. a procedure and be a device as in DE-OS 32 27 227 are described and in which the circulated Sprinkling water via a so-called backwashable ul trafilter is processed. However, tests have shown that such a procedure does not go through with normal water is feasible, since the so-called overspray in contact with normal tap water flocculates and becomes unusable. With the method and the system according to the aforementioned IP right publication can only be an end don't filter the overspray from the sprinkler water but a recovery of without further post-treatment reusable water-based paint.

Aufgabe der vorliegenden Erfindung ist es daher, das durch den Stand der Technik bekannte Verfahren in der Weise zu verbessern, daß neben einer unbeschädigten Lackrückgewin­ nung auch dessen sofortige Wiedereinbringung in den Ar­ beitskreislauf möglich ist.The object of the present invention is therefore that known methods in such a way improve that in addition to an undamaged paint recovery also its immediate reintroduction into the ar working cycle is possible.

Gelöst wird diese Aufgabe in überraschend einfacher Weise gemäß der vorliegenden Erfindung vor allem durch die Ver­ wendung von entsalztem Wasser als Umlauf- und Berieselungs­ flüssigkeit des Kabinensystems, da sich nämlich gezeigt hat, daß die handelsüblichen Wasserlacke in Verbindung mit sol­ chem Wasser, keinen Schaden erleiden und nach entsprechen­ der Eindickung sofort wieder in den Arbeitskreislauf ein­ geschleust werden können. Bei der Ultrafiltration sind Porenweiten unter 50 nm ausgeschlossen.This task is solved in a surprisingly simple way according to the present invention mainly by ver use of desalinated water as circulation and sprinkler fluidity of the cabin system, because it has been shown that the commercially available water-based paints in connection with sol  chem water, take no damage and conform to the thickening immediately back into the working cycle can be smuggled. When it comes to ultrafiltration Pore widths below 50 nm excluded.

Weitere vorteilhafte Maßnahmen im Zusammenhang mit der vor­ liegenden Erfindung sind in den Unteransprüchen angegeben.Further advantageous measures in connection with the before lying invention are specified in the subclaims.

Die Zeichnung zeigt ein Prinzipschema zur Verfahrensdurch­ führung bzw. zur Verdeutlichung des dafür minimal erfor­ derlichen Anlagenaufbaus.The drawing shows a basic scheme for the procedure leadership or to illustrate the minimally required plant construction.

Erfindungsgemäße Grundvoraussetzung ist hierbei die Verwen­ dung von entsalztem Wasser als Umlauf- und Berieselungs­ flüssigkeit des Kabinensystems sowie eine kontinuierliche oder diskontinuierliche Zugabe einer der Wasserverdunstung durch den Abluftstrom entsprechenden, dosierten Menge neuen und ebenfalls entsalztem Wassers in den Wasserkreislauf, wobei die Ausschleusung des Lack-Wassergemisches aus dem Wasserumlauf mittels eines Überlaufsystems durch Zugabe von Filtratwasser aus der Ultrafiltration erfolgt.The basic requirement according to the invention is the use deionized water as circulation and sprinkler fluidity of the cabin system as well as a continuous or discontinuous addition of one of the water evaporation through the exhaust air flow corresponding, dosed amount of new and also desalinated water in the water cycle, the discharge of the paint-water mixture from the Water circulation by means of an overflow system by adding Filtrate water from the ultrafiltration takes place.

Sinnvoll ist es zudem, daß die Lackeindickung aus dem Ka­ binenberieselungskreislauf mittels des UF-Moduls in Ver­ bindung mit einem separaten Vorlagebehälter bzw. Sammel­ becken stattfindet, dem in einer Art Bypass in an sich be­ kannter Weise noch ein Spülmittelbehälter für das UF-Modul zugeordnet ist.It also makes sense that the paint thickening from the Ka gasoline sprinkling circuit using the UF module in Ver binding with a separate storage container or collector basin takes place, which is in a kind of bypass in itself Known way a detergent container for the UF module assigned.

Claims (4)

1. Verfahren zur Rückgewinnung von Wasserlacken aus mit wasserberieselten Wandungs- sowie Bodenflächen beste­ henden Spritzkabinen und Naßabscheidung der Farbnebel aus der Luft, durch Kreislaufführung des anfallenden Lack-Wassergemisches über eine Ultrafiltrationseinheit, gekennzeichnet durch Verwendung von entsalztem Wasser als Umlauf- und Be­ rieselungsflüssigkeit des Kabinensystems; wobei bei der Ultrafiltration Porenweiten unter 50 nm ausgeschlossen sind.1. Process for the recovery of water-based paints from existing spray booths with water-sprinkled walls and floors and wet separation of the paint mist from the air, by recirculating the resulting paint-water mixture via an ultrafiltration unit, characterized by the use of demineralized water as circulation and irrigation liquid of the cabin system ; whereby pore sizes below 50 nm are excluded in ultrafiltration. 2. Verfahren nach Anspruch 1, gekennzeichnet durch kontinuierliche oder diskontinuierliche Zugabe einer der Wasserverdunstung durch den Abluftstrom ent­ sprechenden, dosierten Menge neuen und ebenfalls ent­ sslzten Wassers in den Wasserkreislauf.2. The method according to claim 1, marked by continuous or discontinuous addition of a the evaporation of water through the exhaust air flow speaking, dosed amount of new and also ent fresh water in the water cycle. 3. Verfahren nach den Ansprüchen 1 und 2, gekennzeichnet durch Ausschleusung des Lack-Wassergemisches aus dem Wasser­ umlauf mittels eines Überlaufsystems durch Zugabe von Filtratwasser aus der Ultrafiltration.3. The method according to claims 1 and 2, marked by Removal of the paint-water mixture from the water circulation by means of an overflow system by adding Filtrate water from ultrafiltration. 4. Verfahren nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Lackeindickung mittels Ultrafiltrationskreis­ lauf in einem separaten Sammelbecken erfolgt.4. Method according to one or more of the preceding Expectations, characterized,  that the paint thickening by means of an ultrafiltration circuit run in a separate pool.
DE3428300A 1984-08-01 1984-08-01 Process for the recovery of water-based paints Revoked DE3428300C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3428300A DE3428300C2 (en) 1984-08-01 1984-08-01 Process for the recovery of water-based paints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3428300A DE3428300C2 (en) 1984-08-01 1984-08-01 Process for the recovery of water-based paints

Publications (2)

Publication Number Publication Date
DE3428300A1 DE3428300A1 (en) 1986-02-13
DE3428300C2 true DE3428300C2 (en) 1993-10-14

Family

ID=6242071

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3428300A Revoked DE3428300C2 (en) 1984-08-01 1984-08-01 Process for the recovery of water-based paints

Country Status (1)

Country Link
DE (1) DE3428300C2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH680710A5 (en) * 1989-12-22 1992-10-30 Unicolor Ag
CH680711A5 (en) * 1991-04-09 1992-10-30 Unicolor Ag
US5282970A (en) * 1991-04-09 1994-02-01 Unicolor Ag Method for environmentally benign paint spraying with an air-drying lacquer dissolved, emulgated or dispersed in water
US5393390A (en) * 1991-05-08 1995-02-28 Akzo Nobel Nv Treatment and recycling of overspray from the spray application of waterborne coatings
DE4123296A1 (en) * 1991-07-13 1993-01-21 Eisenmann Kg Maschbau VARNISH SEPARATION AND RECOVERY PROCESS FOR WATER-DETUMABLE VARNISHES IN SPRAYING CABINS AND SYSTEM SYSTEM FOR IMPLEMENTING THE PROCESS
DE4133130A1 (en) * 1991-10-05 1993-04-08 Herberts Gmbh METHOD FOR RECOVERY OF THE OVERSPRAY OF AQUEOUS COATING AGENTS ON THE SPRAY APPLICATION IN SPRAYING CABINS
DE4139391A1 (en) * 1991-11-29 1993-06-03 Henkel Kgaa DRAINING PROCESS
DE4202539A1 (en) * 1992-01-30 1993-08-05 Duerr Gmbh & Co RECOVERY SYSTEM FOR WATER PAINT SURPLUS
DE4213671A1 (en) * 1992-04-25 1993-10-28 Herberts Gmbh Process for the recovery of the overspray of aqueous coating agents when spraying in spray booths
FR2700484B1 (en) * 1993-01-18 1995-02-24 Ais Painting installation.
DE4328357C2 (en) * 1993-08-24 1995-08-17 Herberts Gmbh Process for the quantitative determination of the non-volatile components of coating agents or coating agent components different from pigments and fillers
DE4406952A1 (en) * 1994-03-03 1995-09-07 Bayer Ag Process for concentrating paint overspray
US6127001A (en) * 1997-05-13 2000-10-03 Nippon Paint Co., Ltd. Recyclable cold curing aqueous coating composition and method for recycling it
JP2002079153A (en) 2000-09-04 2002-03-19 Nippon Paint Co Ltd Operation control method in recycling system fo water based coating material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227227A1 (en) * 1982-07-21 1984-02-09 Wolfgang Dipl.-Ing. 8941 Memmingerberg Richter Process for the recovery of aqueous paint from the overspray during painting with wet paint, and apparatus for performing the process
DE3332457C2 (en) * 1983-09-08 1986-06-05 Wolfgang Dipl.-Ing. 8941 Memmingerberg Richter Process for recovering paint material from the overspray produced during spray painting and arrangement for carrying out the process

Also Published As

Publication number Publication date
DE3428300A1 (en) 1986-02-13

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: EISENMANN MASCHINENBAU KG (KOMPLEMENTAER: EISENMAN

8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation