EP2361697A1 - Cleaning assembly for containers and method for its operation - Google Patents

Cleaning assembly for containers and method for its operation Download PDF

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Publication number
EP2361697A1
EP2361697A1 EP11150738A EP11150738A EP2361697A1 EP 2361697 A1 EP2361697 A1 EP 2361697A1 EP 11150738 A EP11150738 A EP 11150738A EP 11150738 A EP11150738 A EP 11150738A EP 2361697 A1 EP2361697 A1 EP 2361697A1
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EP
European Patent Office
Prior art keywords
treatment
station
containers
cleaning
stages
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Granted
Application number
EP11150738A
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German (de)
French (fr)
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EP2361697B1 (en
Inventor
Klaus Klenk
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Krones AG
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Krones AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/30—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking and having conveyors

Definitions

  • the invention relates to a cleaning system for containers, in particular for bottles, and a method for their operation in the preamble of claim 1 and 7 explained type.
  • the known cleaning system includes a closed housing through which the containers to be cleaned are passed through by means of a continuous conveyor.
  • the known cleaning system is designed as a single-end system, ie the containers are on one and the same side in the housing and out of the housing.
  • the interior of the housing is divided into a variety of cleaning stations, the containers are dipped before their actual cleaning treatment in the main lye (Hauptlaugebad) in a Vorlaugebad to first remove the coarsest dirt.
  • the container with lye and water with falling temperature eg 60 ° C, 50 ° C, 35 ° C
  • the invention has for its object to form a cleaning system energy and water saving.
  • the object is achieved in a cleaning system by the features of claim 1 and in a method by the features of claim 7.
  • the invention is based on the recognition that energy losses occur through heat carryover, ie the containers and the conveying means are introduced in the heated state into treatment stages in which the heat is not required. This leads, for example, to increased Sewage temperatures, which are often a problem. Furthermore, a water saving is possible if the treatment is treated in several stages, each with a fraction of the otherwise required water. It has been found that it is possible to clean containers biologically flawless with a water consumption of less than 0.1 l per container. The multistage treatment of the container with pre-caustic still serves to optimally preheat the container, so that the large amount of liquid in the main lye bath does not have to be kept constantly at high energy consumption at the required temperature.
  • Vorlauge- and Nachlaugestationen Due to the multi-stage design of Vorlauge- and Nachlaugestationen is graded in the tailed wastewater disposal available, which can be used for stepwise heating of the container by heat transfer to the precursor. In this way energy is saved.
  • Vorlauge- and Nachlauge treatment stages are coupled in pairs heat transfer.
  • a sprinkling device in particular in the pre-treatment stage, has a thermal energy-saving effect, by means of which only the containers and the conveyor are heated. Elaborate immersion baths, where the containers must be emptied after each treatment, eliminated.
  • water can be saved by the rinsing station is also configured with a variety of treatment levels, each individually with a lower water content.
  • a cleaning system 1 for cleaning containers 2 ( Fig. 3 ), eg bottles made of glass or plastic, in particular PET, can be seen.
  • the cleaning system 1 contains a housing 3 and is designed in the illustrated embodiment as a single-end system, ie container inlet 4 and container outlet 5 are located on the same side of the housing 3.
  • an endless conveyor 6 is arranged, which guides the container 2 through a variety of cleaning stations ,
  • the conveyor 6 runs from the container inlet 4 first through a Vorweichstation VW and from there into and through a Vorlaugestation VL, then into a Scholaugestation HL and from this by a Nachlaugestation NL in a rinse station S before the container 2, the housing 3 on Leave container outlet 5.
  • the system 1 according to the invention does not differ from the prior art.
  • the cleaning system 1 according to the invention differs from the prior art by an energy- and water-saving design, wherein water-saving treatment methods and heat recovery are used.
  • the pre-softening station is divided into two pre-softening zones VWI and VWII. Both stations can work with different temperatures and / or different liquids.
  • the Vorlaugestation VL has in the illustrated embodiment, three Vorlaugezonen preferably formed as separate units VLI, VLII and VLIII, which are arranged in the conveying direction of the conveyor 6 one behind the other and between the Vorweichstation VW and the Scholaugestation HL.
  • the main purpose of the Vorlaugestation is the preheating of the container 2 and the conveyor as close to the temperature of the Hauptlaugestation (usually 80 ° C).
  • Each of the individual Vorlaugezonen VLI to VLIII is formed as a separate unit and has its own Laugenzuschreib 7I, 7II and 7III, and provided with a respective pump P Laugeabtechnisch 8I, 8II and 8III, wherein the Laugeableitonne 8 open into a common disposal line 9.
  • All three pre-leach stages VLI, VLII, VLIII are supplied by a common filter device 10, which filters all three zones simultaneously. However, it is also possible to assign each zone its own filter device. Each pre-leach stage is assigned a label discharge station with a circulation pump.
  • Fig. 3 shows such a Vorlaugezone in a detailed view, from which it can be seen that the containers 2 are passed through the conveyor 6 on individual guides 11 under a sprinkler 12 (overflow), which is supplied via line 7 with precoat. For this purpose, the container 2 are also filled to a certain extent (pre-softening effect).
  • the Vorlauge runs from the containers 2 and is collected by a baffle 13, which catches the rinsed dirt and leads to a Schmutzaustrageband 14, which takes him out of the Housing 3 dissipates.
  • the liquid collects in the lower region and is discharged via the line 8 by means of the pump P in the manner to be described below.
  • This construction is essentially the same for all Vorlaugenzonen VLI to VLIII.
  • the containers then pass into the main leaching station HL, which is designed as Laugebad in the illustrated embodiment. It should be striven that the temperatures of the conveyor and the container when immersing in the Feldlaugebad as close as possible to its temperature range.
  • the Nachlaugestation NL is divided into different zones NLI, NLII, NLIII, each of which is formed as a closed unit with a drain line 15I, 15II and 15III, which are each provided with a pump, and their own supply line 161, 1611 and 16III is.
  • the treatment of the containers is done by spraying (inside and outside).
  • the heat originating from the main leaching station HL and entrained into the leaching station NL is removed from the containers and conveyors (including holders, such as bottle baskets) by the after-caustic, so that the containers and conveyors cool gradually, even if less water is used for cooling.
  • the recovered heat passes with the lye on the respective discharge lines 15 in a heat exchanger 17.
  • the heat exchanger 17 is connected to one or preferably several Nachlaugezonen NL. It can be provided for each Nachlaugezone a separate heat exchanger 17, but preferably a multi-stage heat exchanger, which is connected to all three Nachlaugezonen I to III.
  • the same number of Vorlaugezonen and Nachlaugezonen are provided, which are pairwise coupled via the heat exchanger.
  • the number of However, zones can vary between two and five.
  • the Efindung also works if, for example, more pre-than Nachlaugezonen or more Nachlauge- than Vorlaugezonen are present, for example, a Chalaugezone served two Vorlaugezonen or a Vorlaugezone is cold.
  • the number of exchange zones and the heat exchanger size of a plant is determined for each application and depends on the customer requirements, the size of the plant and the energy and water costs (profitability calculation). It can basically be stated that 30% to 50% of energy and water can be saved compared to a modern one-stage heat recovery plant by this method.
  • the pre-lye temperatures should be between 40 ° C and 70 ° C, the lye between 45 ° C and 75 ° C.
  • the leaching station NL is followed by a rinsing station S, which is likewise subdivided into individual zones.
  • a rinsing station S which is likewise subdivided into individual zones.
  • two hot water zones WWI and MBA and a cold water zone KW are provided. It may be followed by a recycling water zone RW and finally a fresh water (cold water) zone FW, in which the containers 2 are rinsed with drinking water quality tap water.
  • the invention is also in differently designed cleaning systems, for example, in two-end cleaning systems, in which the container inlet and the container outlet are located on opposite sides of the housing can be used.
  • the number of zones within the stations can be varied depending on the particular design of the cleaning process or the special design of the cleaning system; such as e.g. the pre-softening station also contain only one zone.
  • not all zones shown are necessary in the rinsing station.
  • the requirements at the place of use such as a shortage supply of fresh water, high energy costs and cost-effectiveness are decisive.
  • a two- to five-stage heat exchange can also be used. Both the Vorlauge- and the leaching station, for example, can be combined with an internal cleaning.

Abstract

The cleaning system (1) has a conveying section for conveying the container through different cleaning stations. The cleaning stations contain a station for treatment with main base, a station for treatment with a preliminary base, a station for treatment with post base and a rinsing station (S). The preliminary base station (VL) and the post base station (NL) contain two treatment levels in each case. An independent claim is also included for a method for cleaning containers.

Description

Die Erfindung bezieht sich auf eine Reinigungsanlage für Behälter, insbesondere für Flaschen, und ein Verfahren zu ihrem Betrieb der in den Oberbegriffen von Anspruch 1 und 7 erläuterten Art.The invention relates to a cleaning system for containers, in particular for bottles, and a method for their operation in the preamble of claim 1 and 7 explained type.

Ein derartiges Verfahren und eine derartige Vorrichtung ist aus der DE-A-38 15 44.1 bekannt. Die bekannte Reinigungsanlage enthält ein geschlossenes Gehäuse, durch das die zu reinigenden Behälter mit Hilfe eines kontinuierlichen Förderers durchgeschleust werden. Die bekannte Reinigungsanlage ist als Einend-Anlage konzipiert, d.h. die Behälter werden an ein und derselben Seite in das Gehäuse ein- und aus dem Gehäuse herausgeschleust. Das Innere des Gehäuses ist in die unterschiedlichsten Reinigungsstationen unterteilt, wobei die Behälter vor ihrer eigentlichen Reinigungsbehandlung in der Hauptlauge (Hauptlaugebad) in ein Vorlaugebad getaucht werden, um zunächst den gröbsten Schmutz zu entfernen. Nach dem Hauptlaugebad schließen sich verschiedene Nachbehandlungen an, in denen die Behälter mit Nachlauge und Wasser mit fallender Temperatur (z.B. 60°C, 50°C, 35°C) und anschließend mit Frischwasser abgespritzt werden.Such a method and such a device is known from DE-A-38 15 44.1 known. The known cleaning system includes a closed housing through which the containers to be cleaned are passed through by means of a continuous conveyor. The known cleaning system is designed as a single-end system, ie the containers are on one and the same side in the housing and out of the housing. The interior of the housing is divided into a variety of cleaning stations, the containers are dipped before their actual cleaning treatment in the main lye (Hauptlaugebad) in a Vorlaugebad to first remove the coarsest dirt. After the main bath followed by various post-treatments, in which the container with lye and water with falling temperature (eg 60 ° C, 50 ° C, 35 ° C) and then sprayed with fresh water.

Reinigungsanlagen sind aufwändig im Hinblick auf ihren Energie- und Wasserverbrauch. Die Betreiber derartiger Reinigungsanlagen werden durch die ständig steigenden Betriebskosten für Energie, Wasser und Chemie stark belastet. Weiterhin gibt es in vielen Regionen immer größere Probleme bei der Versorgung mit Frischwasser in Trinkwasserqualität. Die heute bekannten Rekueinrichtungen basieren alle auf einzelnen Tauchbädern, bei denen die Flaschen entweder nur untergetaucht oder auch gefüllt werden. Durch das mehrmalige Füllen und Entleeren der Flaschen sind diese Verfahren mit großem Maschinenaufwand verbunden und sehr teuer. Die Wirtschaftlichkeit ist nur bei extremen Energiekosten gegeben.Cleaning systems are complex in terms of their energy and water consumption. The operators of such cleaning systems are heavily burdened by the ever-increasing operating costs for energy, water and chemicals. Furthermore, in many regions there are ever greater problems with the supply of fresh water in drinking water quality. The Rekueinrichtungen known today are all based on individual dip baths in which the bottles are either only submerged or filled. Due to the repeated filling and emptying of the bottles, these processes are associated with great machinery and very expensive. The economy is given only at extreme energy costs.

Der Erfindung liegt die Aufgabe zugrunde, eine Reinigungsanlage energie- und wassersparend auszubilden.The invention has for its object to form a cleaning system energy and water saving.

Die Aufgabe wird bei einer Reinigungsanlage durch die Merkmale des Anspruchs 1 und bei einem Verfahren durch die Merkmale des Anspruchs 7 gelöst.The object is achieved in a cleaning system by the features of claim 1 and in a method by the features of claim 7.

Die Erfindung basiert auf der Erkenntnis, dass Energieverluste durch Wärmeverschleppung auftreten, d.h. die Behälter und das Fördermittel werden in erwärmtem Zustand in Behandlungsstufen eingeschleust, in denen die Wärme nicht erforderlich ist. Dies führt beispielsweise zu erhöhten Abwassertemperaturen, die oft ein Problem darstellen. Weiterhin ist eine Wassereinsparung möglich, wenn die Behandlung in mehreren Stufen, jeweils mit einem Bruchteil des ansonsten erforderlichen Wassers behandelt wird. Es wurde festgestellt, dass es möglich ist, Behälter biologisch einwandfrei mit einem Wasserverbrauch von weniger als 0,1 l pro Behälter zu reinigen. Die mehrstufige Behandlung der Behälter mit Vorlauge dient weiterhin einer optimalen Vorwärmung der Behälter, so dass die große Flüssigkeitsmenge im Hauptlaugebad nicht laufend unter hohem Energieeinsatz auf der erforderlichen Temperatur gehalten werden muss.The invention is based on the recognition that energy losses occur through heat carryover, ie the containers and the conveying means are introduced in the heated state into treatment stages in which the heat is not required. This leads, for example, to increased Sewage temperatures, which are often a problem. Furthermore, a water saving is possible if the treatment is treated in several stages, each with a fraction of the otherwise required water. It has been found that it is possible to clean containers biologically flawless with a water consumption of less than 0.1 l per container. The multistage treatment of the container with pre-caustic still serves to optimally preheat the container, so that the large amount of liquid in the main lye bath does not have to be kept constantly at high energy consumption at the required temperature.

Durch die mehrstufige Ausbildung der Vorlauge- und Nachlaugestationen steht in der Temperatur abgestuftes Nachlauge-Abwasser zur Verfügung, das zum stufenweisen Erwärmen der Behälter durch Wärmeübertragung auf die Vorlauge eingesetzt werden kann. Auf diese Weise wird Energie eingespart.Due to the multi-stage design of Vorlauge- and Nachlaugestationen is graded in the tailed wastewater disposal available, which can be used for stepwise heating of the container by heat transfer to the precursor. In this way energy is saved.

Zweckmäßigerweise sind Vorlauge- und Nachlauge-Behandlungsstufen jeweils paarweise wärmeübertragend gekoppelt.Appropriately Vorlauge- and Nachlauge treatment stages are coupled in pairs heat transfer.

Wärmeenergiesparend wirkt sich weiterhin eine Berieselungseinrichtung insbesondere in der Vorlauge-Behandlungsstufe aus, durch die gezielt nur die Behälter und der Förderer angewärmt wird. Aufwändige Tauchbäder, bei denen nach jeder Behandlung die Behälter entleert werden müssen, entfallen.Furthermore, a sprinkling device, in particular in the pre-treatment stage, has a thermal energy-saving effect, by means of which only the containers and the conveyor are heated. Elaborate immersion baths, where the containers must be emptied after each treatment, eliminated.

Weiterhin kann Wasser eingespart werden, indem die Spülstation ebenfalls mit einer Vielzahl von Behandlungsstufen ausgestaltet wird, die jede einzeln mit einem geringeren Wasseranteil auskommen.Furthermore, water can be saved by the rinsing station is also configured with a variety of treatment levels, each individually with a lower water content.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine schematische Darstellung der erfindungsgemäßen Reinigungsanlage als Fließbild,
Fig. 2
eine schematische Darstellung der erfindungsgemäßen Reinigungsanlage als Konstruktionsdarstellung, und
Fig. 3
eine schematische Darstellung eines Querschnittes durch eine Vorlaugezone in Konstruktionsdarstellung.
An embodiment of the invention will be explained in more detail with reference to the drawings. Show it:
Fig. 1
a schematic representation of the cleaning system according to the invention as a flow diagram,
Fig. 2
a schematic representation of the cleaning system according to the invention as a construction illustration, and
Fig. 3
a schematic representation of a cross section through a Vorlaugezone in construction view.

In den Fig. 1 und 2 ist eine erfindungsgemäße Reinigungsanlage 1 zum Reinigen von Behältern 2 (Fig. 3), z.B. Flaschen aus Glas oder aus Kunststoff, insbesondere PET, ersichtlich. Die Reinigungsanlage 1 enthält ein Gehäuse 3 und ist im dargestellten Ausführungsbeispiel als Einend-Anlage konzipiert, d.h. Behältereinlauf 4 und Behälterauslauf 5 befinden sich an der gleichen Seite des Gehäuses 3. Im Gehäuse 3 ist ein Endlosförderer 6 angeordnet, der die Behälter 2 durch die unterschiedlichsten Reinigungsstationen führt. Im dargestellten Ausführungsbeispiel läuft der Förderer 6 vom Behältereinlauf 4 zunächst durch eine Vorweichstation VW und von dort in und durch eine Vorlaugestation VL, anschließend in eine Hauptlaugestation HL und aus dieser durch eine Nachlaugestation NL in eine Spülstation S, bevor die Behälter 2 das Gehäuse 3 am Behälterauslauf 5 verlassen.In the Fig. 1 and 2 is a cleaning system 1 according to the invention for cleaning containers 2 ( Fig. 3 ), eg bottles made of glass or plastic, in particular PET, can be seen. The cleaning system 1 contains a housing 3 and is designed in the illustrated embodiment as a single-end system, ie container inlet 4 and container outlet 5 are located on the same side of the housing 3. In the housing 3, an endless conveyor 6 is arranged, which guides the container 2 through a variety of cleaning stations , In the illustrated embodiment, the conveyor 6 runs from the container inlet 4 first through a Vorweichstation VW and from there into and through a Vorlaugestation VL, then into a Hauptlaugestation HL and from this by a Nachlaugestation NL in a rinse station S before the container 2, the housing 3 on Leave container outlet 5.

Im Hinblick auf die verwendeten Reinigungsflüssigkeiten und Chemikalien unterscheidet sich die erfindungsgemäße Anlage 1 nicht vom Stand der Technik. Die erfindungsgemäße Reinigungsanlage 1 unterscheidet sich jedoch vom Stand der Technik durch eine energie- und wassersparende Ausführung, wobei wassersparende Behandlungsmethoden und Wärmerückgewinnung eingesetzt werden.With regard to the cleaning fluids and chemicals used, the system 1 according to the invention does not differ from the prior art. However, the cleaning system 1 according to the invention differs from the prior art by an energy- and water-saving design, wherein water-saving treatment methods and heat recovery are used.

So ist die Vorweichstation in zwei Vorweichzonen VWI und VWII unterteilt. Beide Stationen können mit unterschiedlichen Temperaturen und/oder unterschiedlichen Flüssigkeiten arbeiten.Thus, the pre-softening station is divided into two pre-softening zones VWI and VWII. Both stations can work with different temperatures and / or different liquids.

Die Vorlaugestation VL hat im dargestellten Ausführungsbeispiel drei, bevorzugt als getrennte Einheiten ausgebildete Vorlaugezonen VLI, VLII und VLIII, die in Förderrichtung des Förderers 6 hintereinander und zwischen der Vorweichstation VW und der Hauptlaugestation HL angeordnet sind. Der Hauptzweck der Vorlaugestation ist die Vorwärmung der Behälter 2 und der Förderer möglichst nahe an die Temperatur der Hauptlaugestation (meist 80°C). Jede der einzelnen Vorlaugezonen VLI bis VLIII ist als gesonderte Einheit ausgebildet und weist eine eigene Laugenzufuhr 7I, 7II und 7III, sowie eine mit jeweils einer Pumpe P versehene Laugeableitung 8I, 8IIund 8III auf, wobei die Laugeableitungen 8 in eine gemeinsame Entsorgungsleitung 9 münden. Alle drei Vorlaugestufen VLI, VLII, VLIII werden von einer gemeinsamen Filtereinrichtung 10 versorgt, die alle drei Zonen gleichzeitig filtriert. Es ist jedoch auch möglich, jeder Zone eine eigene Filtereinrichtung zuzuordnen. Jeder Vorlaugestufe ist eine Etikettenaustragsstation mit Umwälzpumpe zugeordnet.The Vorlaugestation VL has in the illustrated embodiment, three Vorlaugezonen preferably formed as separate units VLI, VLII and VLIII, which are arranged in the conveying direction of the conveyor 6 one behind the other and between the Vorweichstation VW and the Hauptlaugestation HL. The main purpose of the Vorlaugestation is the preheating of the container 2 and the conveyor as close to the temperature of the Hauptlaugestation (usually 80 ° C). Each of the individual Vorlaugezonen VLI to VLIII is formed as a separate unit and has its own Laugenzufuhr 7I, 7II and 7III, and provided with a respective pump P Laugeableitung 8I, 8II and 8III, wherein the Laugeableitungen 8 open into a common disposal line 9. All three pre-leach stages VLI, VLII, VLIII are supplied by a common filter device 10, which filters all three zones simultaneously. However, it is also possible to assign each zone its own filter device. Each pre-leach stage is assigned a label discharge station with a circulation pump.

Fig. 3 zeigt eine derartige Vorlaugezone in detaillierter Darstellung, aus der zu sehen ist, dass die Behälter 2 durch den Förderer 6 auf einzelnen Führungen 11 unter einer Berieselungseinrichtung 12 (Überschwallung) hindurchgeführt werden, die über die Leitung 7 mit Vorlauge versorgt wird. Hierzu werden die Behälter 2 auch zu einem gewissen Teil angefüllt (Vorweicheffekt). Die Vorlauge läuft von den Behältern 2 ab und wird von einem Leitblech 13 aufgefangen, der den abgespülten Schmutz auffängt und auf ein Schmutzaustrageband 14 leitet, das ihn aus dem Gehäuse 3 abführt. Die Flüssigkeit sammelt sich im unteren Bereich und wird über die Leitung 8 mit Hilfe der Pumpe P in nachfolgend noch zu beschreibender Weise abgeführt. Diese Konstruktion ist im Wesentlichen für alle Vorlaugenzonen VLI bis VLIII gleich. Fig. 3 shows such a Vorlaugezone in a detailed view, from which it can be seen that the containers 2 are passed through the conveyor 6 on individual guides 11 under a sprinkler 12 (overflow), which is supplied via line 7 with precoat. For this purpose, the container 2 are also filled to a certain extent (pre-softening effect). The Vorlauge runs from the containers 2 and is collected by a baffle 13, which catches the rinsed dirt and leads to a Schmutzaustrageband 14, which takes him out of the Housing 3 dissipates. The liquid collects in the lower region and is discharged via the line 8 by means of the pump P in the manner to be described below. This construction is essentially the same for all Vorlaugenzonen VLI to VLIII.

Die Behälter gelangen dann in die Hauptlaugestation HL, die im dargestellten Ausführungsbeispiel als Laugebad ausgebildet ist. Es sollte angestrebt werden, dass die Temperaturen des Förderers und der Behälter beim Eintauchen in das Hauptlaugebad möglichst nahe an dessen Temperaturbereich liegt.The containers then pass into the main leaching station HL, which is designed as Laugebad in the illustrated embodiment. It should be striven that the temperatures of the conveyor and the container when immersing in the Hauptlaugebad as close as possible to its temperature range.

Nach der Hauptreinigung gelangen die Behälter in die Nachlaugestation NL. Auch die Nachlaugestation NL ist in verschiedenen Zonen NLI, NLII, NLIII unterteilt, die jede für sich als geschlossene Einheit mit jeweils einer Ablaufleitung 15I, 15II und 15III, die jeweils mit einer Pumpe versehen sind, und einer eigenen Zulaufleitung 161, 1611 und 16III ausgebildet ist. Die Behandlung der Behälter erfolgt durch Spritzen (innen und außen).After the main cleaning, the containers go to the leaching station NL. The Nachlaugestation NL is divided into different zones NLI, NLII, NLIII, each of which is formed as a closed unit with a drain line 15I, 15II and 15III, which are each provided with a pump, and their own supply line 161, 1611 and 16III is. The treatment of the containers is done by spraying (inside and outside).

Bei der erfindungsgemäßen Reinigungsanlage 1 wird die aus der Hauptlaugestation HL stammende und in die Nachlaugestation NL verschleppte Wärme den Behältern und Förderern (einschließlich Halterungen, wie z.B. Flaschenkörbe) durch die Nachlauge entzogen, so dass sich die Behälter und Förderer stufenweise abkühlen, auch wenn weniger Wasser zum Kühlen eingesetzt wird. Die gewonnene Wärme gelangt mit der Nachlauge über die jeweiligen Ablaufleitungen 15 in einen Wärmetauscher 17. Der Wärmetauscher 17 ist mit einer oder bevorzugt mehreren Nachlaugezonen NL verbunden. Es kann für jede Nachlaugezone ein eigener Wärmetauscher 17 vorgesehen sein, bevorzugt ist jedoch ein mehrstufiger Wärmetauscher, der mit allen drei Nachlaugezonen I bis III verbunden ist. An der Abgabeseite des Wärmetauschers 17 sind die Zu- und Ableitungen 7, 8 der Berieselungseinrichtung 12 der Vorlaugezonen VLI bis VLIII angeschlossen. Auf diese Weise wird die Vorlauge durch die aus der Hauptlaugestation in die Nachlaugezonen verschleppte Wärme erwärmt. Die Behälter (und gegebenenfalls Förderer und Halterungen) werden damit zwischen der Wasservorwärmung (Vorweiche) und der Hauptlauge mit unterschiedlichen Temperaturen überschwallt, so dass deren Vorwärmung mit weitaus geringeren technischen Maschinen-Equipments erreicht werden kann. Ein weiterer wichtiger Punkt ist die niedrige Temperatur im Nachspülbereich der Wasserzone. Die Chemikalien zur Desinfektion und zur Verhütung von Kalkausfall können in niedrigeren Konzentrationen eingesetzt werden. Trotz vermindertem Frischwassereinsatz werden bessere Ergebnisse bei den Rückständen in den Flaschen erreicht.In the cleaning system 1 according to the invention, the heat originating from the main leaching station HL and entrained into the leaching station NL is removed from the containers and conveyors (including holders, such as bottle baskets) by the after-caustic, so that the containers and conveyors cool gradually, even if less water is used for cooling. The recovered heat passes with the lye on the respective discharge lines 15 in a heat exchanger 17. The heat exchanger 17 is connected to one or preferably several Nachlaugezonen NL. It can be provided for each Nachlaugezone a separate heat exchanger 17, but preferably a multi-stage heat exchanger, which is connected to all three Nachlaugezonen I to III. On the discharge side of the heat exchanger 17, the supply and discharge lines 7, 8 of the sprinkler 12 of Vorlaugezonen VLI to VLIII are connected. In this way, the precoat is heated by the entrained from the Hauptlaugestation in the Nachlaugezonen heat. The containers (and possibly conveyors and brackets) are thus superseded by the water preheating (Vorweiche) and the main liquor at different temperatures, so that their preheating can be achieved with much lower technical equipment. Another important issue is the low temperature in the rinsing zone of the water zone. The chemicals used to disinfect and prevent lime can be used in lower concentrations. Despite reduced use of fresh water better results are achieved in the residues in the bottles.

Im dargestellten Ausführungsbeispiel sind die gleiche Anzahl von Vorlaugezonen und Nachlaugezonen vorgesehen, die paarweise über den Wärmetauscher gekoppelt sind. Die Anzahl der Zonen kann jedoch jeweils zwischen zwei und fünf schwanken. Die Efindung funktioniert jedoch auch, wenn beispielsweise mehr Vor- als Nachlaugezonen oder mehr Nachlauge- als Vorlaugezonen vorhanden sind, wobei beispielsweise eine Nachlaugezone zwei Vorlaugezonen bedient oder eine Vorlaugezone kalt gefahren wird.In the illustrated embodiment, the same number of Vorlaugezonen and Nachlaugezonen are provided, which are pairwise coupled via the heat exchanger. The number of However, zones can vary between two and five. However, the Efindung also works if, for example, more pre-than Nachlaugezonen or more Nachlauge- than Vorlaugezonen are present, for example, a Nachlaugezone served two Vorlaugezonen or a Vorlaugezone is cold.

Die Anzahl der Austauschzonen und die Wärmetauschergröße einer Anlage wird für den jeweiligen Anwendungsfall festgelegt und ist abhängig von den Kundenanforderungen, der Anlagengröße sowie den Energie- und Wasserkosten (Wirtschaftlichkeitsberechnung). Es kann grundsätzlich festgestellt werden, dass durch dieses Verfahren 30 % bis 50 % Energie und Wasser gegenüber einer heutigen Anlage mit einstufiger Wärmerückgewinnung eingespart werden kann.The number of exchange zones and the heat exchanger size of a plant is determined for each application and depends on the customer requirements, the size of the plant and the energy and water costs (profitability calculation). It can basically be stated that 30% to 50% of energy and water can be saved compared to a modern one-stage heat recovery plant by this method.

Bei einer Hauptlaugentemperatur von 80°C sollten die Vorlaugen Temperaturen zwischen 40°C und 70°C, die Nachlaugen zwischen 45°C und 75°C liegen.At a main leach temperature of 80 ° C, the pre-lye temperatures should be between 40 ° C and 70 ° C, the lye between 45 ° C and 75 ° C.

An die Nachlaugestation NL schließt sich eine Spülstation S an, die ebenfalls in einzelne Zonen unterteilt ist. Im dargestellten Ausführungsbeispiel sind zwei Warmwasserzonen WWI und WWII sowie eine Kaltwasserzone KW vorgesehen. Es kann sich eine Recyclingwasserzone RW und schließlich eine Frischwasser(Kaltwasser)zone FW anschließen, in der die Behälter 2 mit Leitungswasser in Trinkwasserqualität gespült werden.The leaching station NL is followed by a rinsing station S, which is likewise subdivided into individual zones. In the illustrated embodiment, two hot water zones WWI and WWII and a cold water zone KW are provided. It may be followed by a recycling water zone RW and finally a fresh water (cold water) zone FW, in which the containers 2 are rinsed with drinking water quality tap water.

In Abwandlung des beschriebenen und gezeichneten Ausführungsbeispiels ist die Erfindung auch bei anders konzipierten Reinigungsanlagen, beispielsweise bei Zweiend-Reinigungsanlagen, bei der der Behältereinlauf und der Behälterauslauf sich auf gegenüberliegenden Seiten des Gehäuses befinden, einsetzbar. Auch die Anzahl der Zonen innerhalb der Stationen kann je nach spezieller Ausgestaltung des Reinigungsvorgangs oder der speziellen Konstruktion der Reinigungsanlage variiert werden; so kann z.B. die Vorweichstation auch lediglich eine Zone enthalten. Ebenfalls sind in der Spülstation nicht alle dargestellten Zonen notwendig. Für die Anzahl der Stufen in der Vorlaugestation und der Nachlaugestation sind die Anforderungen am Einsatzort, wie beispielsweise eine Mangelversorgung mit Frischwasser, hohe Energiekosten und die Wirtschaftlichkeit ausschlaggebend. Statt des dreifachen Wärmeaustausches kann auch ein zwei- bis fünfstufiger Wärmeaustausch eingesetzt werden. Sowohl die Vorlauge- als auch die Nachlaugestation kann beispielsweise auch mit einer Innenreinigung kombiniert werden.In a modification of the described and illustrated embodiment, the invention is also in differently designed cleaning systems, for example, in two-end cleaning systems, in which the container inlet and the container outlet are located on opposite sides of the housing can be used. Also, the number of zones within the stations can be varied depending on the particular design of the cleaning process or the special design of the cleaning system; such as e.g. the pre-softening station also contain only one zone. Also, not all zones shown are necessary in the rinsing station. For the number of stages in the leach station and the leaching station, the requirements at the place of use, such as a shortage supply of fresh water, high energy costs and cost-effectiveness are decisive. Instead of the three-fold heat exchange, a two- to five-stage heat exchange can also be used. Both the Vorlauge- and the leaching station, for example, can be combined with an internal cleaning.

Claims (9)

Reinigungsanlage (1) für Behälter (2), mit einer Förderstrecke (6) zum Fördern der Behälter (2) durch unterschiedliche Reinigungsstationen, wobei die Reinigungsstationen eine Station (HL) zur Behandlung mit Hauptlauge, eine Station (VL) zur Behandlung mit Vorlauge, eine Station (NL) zur Behandlung mit Nachlauge und eine Spülstation (S) enthält, dadurch gekennzeichnet dass die Vorlaugestation (VL) und die Nachlaugestation (NL) jeweils wenigstens zwei Behandlungsstufen (VLI bis VLIII, NLI bis NLIII) enthalten.Cleaning system (1) for containers (2), having a conveying path (6) for conveying the containers (2) through different cleaning stations, the cleaning stations having a station (HL) for treatment with main liquor, a station (VL) for treatment with precleaning, a station (NL) for treatment with lye and a rinsing station (S), characterized in that the pre-lye station (VL) and the leaching station (NL) each contain at least two treatment stages (VLI to VLIII, NLI to NLIII). Reinigungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens eine Nachlauge-Behandlungsstufe (NLI bis NLIII) in wärmeübertragenden Kontakt mit einer Vorlauge-Behandlungsstufe (VLI bis VLIII) steht.Cleaning installation according to claim 1, characterized in that at least one after-leaching treatment stage (NLI to NLIII) is in heat-transferring contact with a pre-treatment stage (VLI to VLIII). Reinigungsanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeweils die gleiche Anzahl Vorlauge- und Nachlauge-Behandlungsstufen vorgesehen sind, die jeweils paarweise in wärmeübertragenden Kontakt miteinander stehen.Cleaning installation according to claim 1 or 2, characterized in that in each case the same number Vorlauge- and Nachlauge treatment stages are provided which are in pairs in heat-transferring contact with each other. Reinigungsanlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass wenigstens eine Vorlauge-Behandlungsstufe (VLI bis VLIII) mit einer Berieselungseinrichtung (12) versehen ist.Cleaning installation according to one of claims 1 to 3, characterized in that at least one pre-treatment stage (VLI to VLIII) is provided with a sprinkling device (12). Reinigungsanlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Spülstation (S) wenigstens zwei Behandlungsstufen (WWI, WWII) mit Warm- und wenigstens zwei Behandlungsstufen (KW, RW, FW) mit Kaltwasser enthält.Cleaning installation according to one of claims 1 to 4, characterized in that the rinsing station (S) contains at least two treatment stages (WWI, WWII) with hot and at least two treatment stages (KW, RW, FW) with cold water. Verfahren zum Reinigen von Behältern (2), bei dem die Behälter (2) nacheinander durch eine Mehrzahl von unterschiedlichen Reinigungsstationen gefördert werden, in denen sie nacheinander mit Vorlauge, Hauptlauge, Nachlauge und Spülmittel behandelt werden, dadurch gekennzeichnet, dass die Behälter (2) in wenigstens zwei Stufen (VLI bis VLIII mit Vorlauge und in wenigstens zwei Stufen (NLI bis NLIII) mit Nachlauge behandelt werden.Method for cleaning containers (2), in which the containers (2) are successively conveyed through a plurality of different cleaning stations, in which they are treated successively with precleaner, main liquor, after-liquor and detergent, characterized in that the containers (2) in at least two stages (VLI to VLIII with precoat and in at least two stages (NLI to NLIII) are treated with after-caustic. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Nachlauge zum Vorwärmen der Vorlauge verwendet wird.A method according to claim 6, characterized in that the lye is used for preheating the pre-liquor. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Behälter (2) in wenigstens einer Stufe mit Vorlauge berieselt werden.A method according to claim 6 or 7, characterized in that the container (2) are sprinkled in at least one stage with Vorlauge. Verfahren nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Behälter (2) in wenigstens zwei Behandlungsstufen (WWI, WWII) mit Warm- und wenigstens zwei Behandlungsstufen (KW, RW, FW) mit Kaltwasser gespült werden.Method according to one of claims 6 to 8, characterized in that the containers (2) in at least two treatment stages (WWI, WWII) with hot and at least two treatment stages (KW, RW, FW) are rinsed with cold water.
EP11150738.0A 2010-02-26 2011-01-12 Cleaning assembly for containers and method for its operation Active EP2361697B1 (en)

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CN102189091A (en) 2011-09-21
DE102010002408A1 (en) 2011-09-01
BRPI1100340B1 (en) 2020-04-22
BRPI1100340A2 (en) 2012-07-31
CN102189091B (en) 2015-03-25

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