DE3428300A1 - Method for the recovery of water-borne paints - Google Patents

Method for the recovery of water-borne paints

Info

Publication number
DE3428300A1
DE3428300A1 DE19843428300 DE3428300A DE3428300A1 DE 3428300 A1 DE3428300 A1 DE 3428300A1 DE 19843428300 DE19843428300 DE 19843428300 DE 3428300 A DE3428300 A DE 3428300A DE 3428300 A1 DE3428300 A1 DE 3428300A1
Authority
DE
Germany
Prior art keywords
water
paint
recovery
ultrafiltration
circulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19843428300
Other languages
German (de)
Other versions
DE3428300C2 (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 Maschinenbaugesellschaft Mbh 7030 Boeblingen
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 Maschinenbaugesellschaft Mbh 7030 Boeblingen, Eisenmann Anlagenbau GmbH and Co KG filed Critical Eisenmann Maschinenbaugesellschaft Mbh 7030 Boeblingen
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)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

In the method, in which all the walls and the base of the spray booth are constantly watered, and the resultant paint-water mixture is subsequently passed through an ultrafilter in order to recover the paint, it is proposed to use exclusively demineralised water as the watering liquid.

Description

Verfahren zur Rückgewinnung von Wasserlacken Process for the recovery of water-based paints

Die Erfindung bezieht sich auf ein Verfahren nach dem Oberbegriff des Hauptanspruchs, also auf die Rückgewinnung von Wasserlacken aus mit wasserberieselten Wandungs- sowie Bodenflächen bestehenden Spritzkabinen und Naßabscheidung der Farbnebel aus der Luft, durch Kreislaufführung des anfallenden Lack-Wassergemisches über eine Ultrafiltrationseinheit.The invention relates to a method according to the preamble of the main claim, i.e. the recovery of water-based paints with sprinkled water Wall and floor surfaces of existing spray booths and wet separation of the paint mist from the air, by circulating the resulting paint-water mixture over a 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 U1-trafilter aufbereitet wird. Versuche haben jedoch gezeigt, daß ein solches Verfahren mit normalem Wasser ni#cht durchführbar ist, da das sogenannte Overspray bei Kontakt mit normalem Leitungswasser ausflockt und unbrauchbar wird.A procedure and a Be device as described in DE-OS 32 27 227 and where the circulating sprinkling water via a so-called backwashable U1 trafilter is processed. However, experiments have shown that such a process not feasible with normal water, as the so-called overspray on contact flocculates with normal tap water and becomes unusable.

Mit dem Verfahren und der Anlage gemäß der zuvorgenannten Schutzrechtsveröffentlichung kann also lediglich ein Ausfiltern des Overspray aus dem Berieselungswasser, nicht aber eine Rückgewinnung von ohne weiterer Nachbehandlung wieder verwendbaren Wasserlacks, durchgeführt werden.With the method and the system in accordance with the aforementioned property right publication can only filter out the overspray from the sprinkling water, not but a recovery of water-based varnish that can be reused without further post-treatment, be performed.

Aufgabe der vorliegenden Erfindung ist es daher, das durch den Stand der Technik bekannte Verfahren in der Weise zu verbessern, daß neben einer unbeschädigten Lackrückgewinnung auch dessen sofortige Wiedereinbringung in den Arbeitskreislauf möglich ist.The object of the present invention is therefore that by the prior the art known method to improve in such a way that in addition to an undamaged Paint recovery and its immediate reintroduction into the work cycle is possible.

Gelöst wird diese Aufgabe in überraschend einfacher Weise gemäß der vorliegenden Erfindung vor allem durch die Verwendung von entsalztem Wasser als Umlauf- und Berieselungsflüssigkeit des Kabinensystems, da sich nämlich gezeigt hat daß die handelsüblichen Wasserlacke in Verbindung mit sol- chem Wasser, keinen Schaden erleiden und nach entsprechender Eindickung sofort wieder in den Arbeitskreislauf eingeschleust werden können.This problem is solved in a surprisingly simple manner according to the present invention mainly through the use of demineralized water as Circulating and sprinkling liquid of the cabin system, as namely shown has that the commercially available water-based paints in connection with sol- chem Water, do not suffer any damage and after appropriate thickening again immediately can be introduced into the working cycle.

Weitere vorteilhafte Maßnahmen im Zusammenhang mit der vorliegenden Erfindung sind in den Unteransprüchen angegeben.Further advantageous measures in connection with the present Invention are specified in the subclaims.

Die Zeichnung zeigt ein Prinzipschema zur Verfahrensdurchführung bzw. zur Verdeutlichung des dafür minimal erforderlichen Anlagenaufbaus.The drawing shows a principle diagram for carrying out the process or to illustrate the minimum system structure required for this.

Erfindungsgemäße Grundvoraussetzung ist hierbei die Verwendung von entsalztem Wasser als Umlauf- und Berieselungsflüssigkeit 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 of desalinated water as a circulating and sprinkling liquid for the cabin system and a continuous or discontinuous addition of one of the water evaporation new and also desalinated by the exhaust air flow corresponding, metered amount Water in the water cycle, with the discharge of the paint-water mixture from the water circulation by means of an overflow system by adding filtrate water takes place from the ultrafiltration.

Sinnvoll ist es zudem, daß die Lackeindickung aus dem Kabinenberieselungskreislauf mittels des UF-Moduls in Verbindung mit einem separaten Vorlagebehälter bzw. Sammelbecken stattfindet, dem in einer Art Bypass in an sich bekannter Weise noch ein Spülmittelbehälter für das UF-Modul zugeordnet ist.It is also useful that the paint thickening from the cabin sprinkling circuit by means of the UF module in connection with a separate storage container or collecting basin takes place, which in a kind of bypass in a known manner still a detergent container assigned for the UF module.

Claims (4)

Patentansprüche 1. Verfahren zur Rückgewinnung von Wasserlacken aus mit wasserberieselten Wandungs- sowie Bodenflächen bestehenden Spritzkabinen und Naßabscheidung der Farbnebel aus der Luft, durch Kreislaufführung des anfallenden Lack-Wassergemisches über eine Ultrafiltrationseinheit, g e k e n n 7 e i c h n e t d u r c h Verwendung von entsalztem Wasser als Umlauf- und Berieselungsflüssigkeit des Kabinensystems. Claims 1. Process for the recovery of water-based paints existing spray booths with water-sprinkled wall and floor areas and Wet separation of the paint mist from the air, by circulating the resulting Paint-water mixture via an ultrafiltration unit, g e k e n n 7 e i c h n e t d u r c h Use of demineralized water as a circulating and sprinkling liquid of the cabin system. 2. Verfahren nach Anspruch 1, gekennzeichnet durch kontinuierliche oder diskontinuierliche Zugabe einer der Wasserverdunstung durch den Abluftstrom entsprechenden, dosierten Menge neuen und ebenfalls entsalzten Wassers in den Wasserkreislauf.2. The method according to claim 1, characterized by continuous or discontinuous addition of one of the water evaporation through the exhaust air flow corresponding, dosed amount of new and also desalinated water into the water cycle. Verfahren nach den Ansprüchen 1 und 2, gekennzeichnet durch Ausschleusung des Lack-Wassergemisches aus dem Wasserumlauf mittels eines Uberlaufsystems durch Zugabe von Filtratwasser aus der Ultrafiltration.Process according to Claims 1 and 2, characterized by discharge of the paint-water mixture from the water circulation by means of an overflow system Addition of filtrate water from the ultrafiltration. 4. Verfahren nach einem oder mehreren der vorhergehenden Ansprüche, d a d u r c h g e k e n n z 6 1 c h n e t daß die Lackeindickung mittels Ultrafiltrationskreislauf in einem separaten Sammelbecken erfolgt.4. The method according to one or more of the preceding claims, d a d u r c h e k e n n z 6 1 c h n e t that the lacquer thickening takes place by means of an ultrafiltration circuit in a separate collecting basin.
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 true DE3428300A1 (en) 1986-02-13
DE3428300C2 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)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009666A1 (en) * 1989-12-22 1991-07-11 Unicolor Ag Process for non-polluting spray painting with a dispersion of oven-drying paint in water
EP0508107A1 (en) * 1991-04-09 1992-10-14 Unicolor Ag Process for pollution-free spray painting with an air-drying lacquer, dissolved, emulsified or dispersed in water
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
WO1993010888A1 (en) * 1991-11-29 1993-06-10 Henkel Kommanditgesellschaft Auf Aktien Method of removing paint
DE4202539A1 (en) * 1992-01-30 1993-08-05 Duerr Gmbh & Co RECOVERY SYSTEM FOR WATER PAINT SURPLUS
EP0567915A1 (en) * 1992-04-25 1993-11-03 Herberts Gesellschaft mit beschränkter Haftung Process for recovering water-coating overspray during spray coating in spray booths
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
FR2700484A1 (en) * 1993-01-18 1994-07-22 Ais Painting installation.
US5393390A (en) * 1991-05-08 1995-02-28 Akzo Nobel Nv Treatment and recycling of overspray from the spray application of waterborne coatings
DE4328357A1 (en) * 1993-08-24 1995-03-02 Herberts Gmbh Process for the quantitative determination of the non-volatile components of coating agents or coating agent components different from pigments and fillers
US5490939A (en) * 1994-03-03 1996-02-13 Bayer Aktiengesellschaft Process for reconcentrating overspray from one-component coating compositions
EP0878494A2 (en) * 1997-05-13 1998-11-18 Nippon Paint Co., Ltd. Recyclable cold curing aqueous coating composition and method for recycling it
EP1184086A3 (en) * 2000-09-04 2002-12-18 Nippon Paint Co., Ltd. Recycle system of aqueous paint

Citations (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

Patent Citations (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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
US-Firmenschrift: Ultrafiltration and Reverse Osmosis, der Fa. Osmonics, Minnetonka, Minnesota *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009666A1 (en) * 1989-12-22 1991-07-11 Unicolor Ag Process for non-polluting spray painting with a dispersion of oven-drying paint in water
US5292547A (en) * 1989-12-22 1994-03-08 Unicolor Ag Method for environmentally benign paint spraying using a dispersion of oven cured lacquer enamel in water
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
EP0508107A1 (en) * 1991-04-09 1992-10-14 Unicolor Ag Process for pollution-free spray painting with an air-drying lacquer, dissolved, emulsified or dispersed in water
CH680711A5 (en) * 1991-04-09 1992-10-30 Unicolor Ag
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
EP0536648A1 (en) * 1991-10-05 1993-04-14 Herberts Gesellschaft mit beschränkter Haftung Process for the recovery of overspray from water-coatings during spraycoating in spray booths
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
WO1993010888A1 (en) * 1991-11-29 1993-06-10 Henkel Kommanditgesellschaft Auf Aktien Method of removing paint
DE4202539A1 (en) * 1992-01-30 1993-08-05 Duerr Gmbh & Co RECOVERY SYSTEM FOR WATER PAINT SURPLUS
US5443738A (en) * 1992-01-30 1995-08-22 Duerr Gmbh Recovery plant for surplus water paint
EP0567915A1 (en) * 1992-04-25 1993-11-03 Herberts Gesellschaft mit beschränkter Haftung Process for recovering water-coating overspray during spray coating in spray booths
US5453301A (en) * 1992-04-25 1995-09-26 Herberts Gesellschaft Mit Beschrankter Haftung Process for recovering the overspray of aqueous coating agents during spray application in spray booths
TR26601A (en) * 1992-04-25 1995-03-15 Herberts & Co Gmbh RECOVERY OF THE SPRAYING PAINT OF WATER-COVERING MATERIALS IN THE SPRAYING APPLICATION OF THE SPRAY CELL.
EP0608167A1 (en) * 1993-01-18 1994-07-27 Air Industrie Systemes Coating installation
FR2700484A1 (en) * 1993-01-18 1994-07-22 Ais Painting installation.
US5545239A (en) * 1993-01-18 1996-08-13 Air Industrie Systems - A.I.S. Painting installation
DE4328357A1 (en) * 1993-08-24 1995-03-02 Herberts Gmbh Process for the quantitative determination of the non-volatile components of coating agents or coating agent components different from pigments and fillers
US5490939A (en) * 1994-03-03 1996-02-13 Bayer Aktiengesellschaft Process for reconcentrating overspray from one-component coating compositions
EP0878494A2 (en) * 1997-05-13 1998-11-18 Nippon Paint Co., Ltd. Recyclable cold curing aqueous coating composition and method for recycling it
EP0878494A3 (en) * 1997-05-13 1999-05-19 Nippon Paint Co., Ltd. Recyclable cold curing aqueous coating composition and method for recycling it
US6127001A (en) * 1997-05-13 2000-10-03 Nippon Paint Co., Ltd. Recyclable cold curing aqueous coating composition and method for recycling it
EP1184086A3 (en) * 2000-09-04 2002-12-18 Nippon Paint Co., Ltd. Recycle system of aqueous paint
US6881436B2 (en) 2000-09-04 2005-04-19 Nippon Paint Co., Ltd. Method for recycling aqueous paint

Also Published As

Publication number Publication date
DE3428300C2 (en) 1993-10-14

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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