EP3171994B1 - Procédé permettant le prétraitement d'un récipient et procédé et dispositif permettant le nettoyage d'un récipient - Google Patents

Procédé permettant le prétraitement d'un récipient et procédé et dispositif permettant le nettoyage d'un récipient Download PDF

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Publication number
EP3171994B1
EP3171994B1 EP15824652.0A EP15824652A EP3171994B1 EP 3171994 B1 EP3171994 B1 EP 3171994B1 EP 15824652 A EP15824652 A EP 15824652A EP 3171994 B1 EP3171994 B1 EP 3171994B1
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EP
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Prior art keywords
cleaning
container
peroxide
solution
pretreating
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EP15824652.0A
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German (de)
English (en)
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EP3171994A1 (fr
EP3171994A4 (fr
Inventor
Dooriya Duo FAN
Zhihui Roby LUO
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Ecolab USA Inc
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Ecolab USA Inc
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions
    • 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
    • B08B9/22—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 soaking alone
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/40—Specific cleaning or washing processes
    • C11D2111/44—Multi-step processes

Definitions

  • the present invention relates to a method for pretreating a container, comprising applying a pretreatment solution to a container to be cleaned comprising peroxide and then conveying the pretreated container into an alkaline wash tank for cleaning, wherein the alkaline wash tank is substantially free of peroxide and the pretreatment is carried out at a temperature range between 35 to 45 °C.
  • containers which are repeatedly usable are often utilized to contain products, such as beverage, beer, milk, yogurt and the like, for cost saving. These containers are often glass bottles or plastic bottles. Before filling any products, the repeatedly usable containers need to be cleaned.
  • a cleaning method comprising steam and hot alkaline liquid is primarily adopted in the industries. This is a safe and automatic cleaning method, which has been extensively used in food, beverage, hygiene and pharmaceutical industries.
  • the cleaning temperature used in this cleaning method is about 80 to about 90°C, and the cleaning rate is about 24,000 to about 40,000 bottles per hour.
  • Said method employs a cleaning additive composition containing chelating agent, peroxide and surfactant in primary alkaline wash tank and secondary alkaline wash tank to clean the repeatedly usable containers.
  • the cleaning can be conducted at a temperature of about 50 to about 70°C.
  • the method lowers the cleaning temperature to a certain extent, the overall cleaning effect and the overall cleaning cost is still not satisfactory, so further improvement is expected.
  • peroxide decomposes and reacts in the alkaline wash tanks, whereby the additional amount of peroxides cannot be controlled, which leads to an increase in overall cleaning cost.
  • the present inventors have conducted comprehensive experiments and tests and finally found that: pretreating a container to be cleaned with a pretreatment solution comprising peroxide prior to cleaning of the container to be cleaned in an alkaline wash tank, and then conveying the pretreated container to an alkaline wash tank for cleaning, a comparable, or even better final cleaning effect can be achieved comparing with direct cleaning the container in the alkaline wash tank. Meanwhile, peroxide can be readily added, and the consumption of the peroxide can be well controlled, such that the overall cleaning cost is further decreased.
  • a method for pretreating container which method comprises applying the container with a pretreatment solution comprising peroxide for pretreatment, and then conveying the pretreated container into an alkaline wash tank, according to claim 1.
  • the container is pretreated by peroxide before entering into an alkaline wash tank, the consumption of peroxide is well controlled, and the overall cleaning cost is further decreased, while excellent cleaning effect is achieved.
  • a method for cleaning container which method comprises the following steps: a) applying a container to be cleaned with a pretreatment solution comprising peroxide for pretreatment; b) conveying the pretreated container into an alkaline wash tank, and cleaning the container with a cleaning solution in the alkaline wash tank.
  • a device for cleaning container which device comprises i) a container pretreatment apparatus configured to apply a pretreatment solution comprising peroxide to a container to be cleaned; ii) a container cleaning apparatus comprising at least one alkaline wash tank, which is for receiving the pretreated container from the container pretreatment apparatus and cleaning the pretreated container with a cleaning solution, wherein the cleaning solution comprises a chelating agent and a surfactant, and the container pretreatment apparatus is connected to the container cleaning apparatus with a container transfer apparatus.
  • the device for cleaning container can be used to carry out the method for cleaning container of the present invention. Further, by using the device for cleaning container, the charges in an alkaline wash tank of a cleaning system can be controlled, the consumption of peroxide is well controlled, and overall cleaning cost is further decreased, while excellent cleaning effect is achieved.
  • a container pretreatment apparatus can be readily combined with various prior art cleaning systems, without complex modifications on the prior art cleaning systems, so that cost for installment is saved. Meanwhile, by using the container pretreatment apparatus, the charges in an alkaline wash tank of a cleaning system can be reduced, the consumption of peroxide is well controlled, and overall cleaning cost is further decreased, while excellent cleaning effect is achieved.
  • pretreatment is intended to mean subjecting a container to a preliminary treatment before the container enters into any alkaline wash tank in a container cleaning apparatus.
  • a “pretreatment,” “pretreating” or “pretreat” includes any pretreatment before the container enters into a container cleaning apparatus, and/or any pretreatment after the container enters into a container cleaning apparatus but before it enters into any alkaline wash tank in the container cleaning apparatus.
  • the container cleaning apparatus comprises more than one alkaline wash tank
  • the "pretreatment” of the present invention also includes the “pretreatment” conducted when the container is between any two adjacent alkaline wash tanks.
  • a container cleaning apparatus generally may comprise at least one alkaline wash tank.
  • a container cleaning apparatus may also comprise more alkaline wash tanks, such as two, three, etc., for more complete cleaning.
  • Containers recycled from outside include soils. These soils comprise, but not limited to, label, mud, mold spot, oil and the like. For various reasons, soils present in a recycled container may cover a large area inside and outside the container.
  • soils present in a recycled container may cover a large area inside and outside the container.
  • peroxide is added in an alkaline cleaning solution in an alkaline wash tank. Although such a process lowers the cleaning temperature to a certain extent, and achieves a good cleaning effect, the addition amount of peroxide is difficult to control due to the easy decomposition of peroxide, resulting in an increase in overall cleaning cost. Attempts have been conducted to pretreating the container with an alkaline solution or water.
  • a method for pretreating container comprises before conveying a container into an alkaline wash tank, applying a pretreatment solution comprising peroxide to the container for pretreatment.
  • the container can be a glass container or a plastic container, such as a beer bottle, a beverage bottle and a milk bottle.
  • the soils comprised in the container include, but are not limited to, label, mud, mold spot and the like.
  • the duration for carrying out the pretreatment method of the present invention can be determined according to the level of soils on a container and the intended precleaning effect. It is generally about 3 to about 10 minutes, preferably about 5 to about 8 minutes, Since the temperature at which the precleaning is conducted is relatively low, the energy consumed will be correspondingly low.
  • peroxide has some oxidative properties.
  • the inventors of the present invention have found that peroxide can chemically react with the soils on a container.
  • peroxide can interact with some metal ions such as iron, manganese and copper and the like present in mold spot or mud. These metal ions function like a catalyst to facilitate the decomposition of peroxide into oxygen and water. Oxygen releases from the soils and forms many tiny bubbles. These bubbles can break the soils through mechanical power, so as to separate them from the container wall to be washed off. Further, peroxide can also oxidatively decompose the organics and mold spot through its own oxidative properties to separate the soil from container wall to be easily washed off.
  • the peroxide used in the peroxide solution in the method of the present invention includes, but not limited to, sodium percarbonate, sodium perborate, peroacetic acid, peroctanoic acid, peroxy sulfonated oleic acid and hydrogen peroxide, and any mixture of them. Other peroxides well known to those skilled in the art can also be used.
  • hydrogen peroxide is preferably used. Further, by using a hydrogen peroxide solution to clean, a container will not have any odor, which is suitable for food and beverage industries.
  • the pretreatment solution of the present invention contains peroxide as the only active ingredient, and the peroxide is such as hydrogen peroxide.
  • the concentration of the peroxide solution used in the method of the present invention is often less than 1 wt%.
  • bubbles released from peroxide solution may fortify the generation of bubbles in a cleaning system.
  • cleaning efficiency will be lowered because excess bubbles will make the contact between glass bottles and cleaning solution insufficient.
  • excessive bubbles will also lead to an extended spray cleaning procedure that follows, and a risk of existence of residual cleaning solution.
  • excessive bubbles may impair the cleaning effect.
  • the concentration of the pretreatment solution comprising peroxide of the present invention can be about 0.2 to about 1wt%, such as about 0.3 to about 0.5wt%.
  • the pretreatment solution comprising peroxide of the present invention is formulated by solving peroxide in water.
  • the water source for formulating the peroxide solution can be such as tap water, soft water, deionized water and the like. In view of the cost, tap water is preferred. Moreover, even tap water of very low cost, the excellent effects of the present invention can still be achieved.
  • the pretreatment solution comprising peroxide of the present invention other agents in addition to peroxide can also be present, such as alkaline agent, disinfect agent, surfactant and the like. However, these other agents are only optional.
  • the pretreatment solution comprising peroxide of the present invention contains only peroxide as active ingredient.
  • the peroxide may be hydrogen peroxide.
  • the alkaline wash tank used comprises alkaline cleaning solution.
  • the alkaline cleaning solution comprises sodium hydroxide in an embodiment of the invention.
  • the concentration of the alkaline cleaning solution may be between 1.5-3.5wt%.
  • the container cleaning apparatus comprises at least one alkaline wash tank.
  • the container cleaning apparatus comprises two alkaline wash tanks, one of which is primary alkaline wash tank, and the other is secondary alkaline wash tank, wherein the secondary alkaline wash tank is positioned downstream of the primary alkaline wash tank, and the two alkaline wash tank is connected by a container transfer apparatus.
  • treatment temperature in alkaline wash tanks can be lowered to a range of about 40 to about 80°C, and more particularly, can be lowered to a range of about 60 to about 70°C.
  • the alkaline solution used in the alkaline wash tank for container cleaning is not particularly limited, and can be those commonly used in container cleaning industry.
  • alkaline solution mainly comprises alkali metal hydroxides, such as sodium hydroxide, and potassium hydroxide and the like, and alkali earth metal hydroxides, such as calcium hydroxides and the like.
  • the alkaline solution may also comprises some additives for improving cleaning effect.
  • the additives comprise, but not limited to, chelating agent, peroxide and surfactant, etc. These additives are all well known to those skilled in the art.
  • the alkaline cleaning solution contained in the alkaline wash tank of the present invention can further comprises additives, such as a chelating agent, a peroxide and a surfactant.
  • the chelating agent can be those known to a person skilled in the art.
  • the chelating agent can be selected from, but not limited to, any one or more of the following: ethylenediamine tetraacetic acid tetrasodium, ethylenediamine tetraacetic acid disodium, glutamic acid diacetic acid tetrasodium, methylglycine diacetic acid, polymethacrylic acid, polymethacrylic acid sodium, aminotrimethylenephosphonic acid , hydroxyethylene diphosphonic acid, ethylenediamine tetramethylenephosphonic acid, diethylenetriamine pentmethylenephosphonic acid, 2-phosphonic acid butane-1,2,4-tricarboxylic acid, polyol phosphonic acid ester, phosphonylhydroxyacetic acid, 1,6-he
  • the peroxide can be those used for precleaning the container to be cleaned.
  • the peroxide comprises, but not limited to, sodium percarbonate, sodium perborate, peracetic acid, peroctanoic acid, peroxy sulfonated oleic acid and hydrogen peroxide, and any mixture of them.
  • the surfactant can be a surfactant commonly used in the art. However, in the present invention, surfactant is optionally present.
  • defoamers and surfactants that can be used in the present invention comprises, but not limited to, polyether-siliconepolymer, aliphatic alcohol polyoxyethylenepolyoxypropylene ether, ethylenediaminepolyoxyethylenepolyoxypropyleneether, and any mixture of them.
  • the present amount of the chelating agent can be for example about 0.05 to about 0.5wt%
  • the present amount of peroxide can be for example about 0.1 to about 0.5wt%
  • the present amount of surfactant can be for example 0 to about 0.5wt%, wherein the above weight percents are all based on the alkaline cleaning solution.
  • the amount of peroxide can be well controlled during the whole process.
  • the amount of peroxide used in an alkaline wash tank can be reduced to 0. That is to say, there is no need to add any peroxide in the alkaline wash tank.
  • the alkaline wash tank is substantially free of any peroxide.
  • substantially it means the cleaning solution in the alkaline wash tank comprises less than 5 wt% of peroxide, or less than 3 wt% of peroxide, or even less than 1 wt% of peroxide. In the most preferred embodiment, the cleaning solution in the alkaline wash tank is completely free of any peroxide.
  • the pretreatment method of the present invention can be primarily classified into two manners, i.e. "outside dosing manner” and “inside dosing manner".
  • the detailed description for the two dosing manners is as follows.
  • outside dosing manner used in the present application means, the step of applying a pretreatment solution comprising peroxide to a container to be cleaned for precleaning step is carried out before the container to be cleaned enters into a container cleaning apparatus comprising an alkaline wash tank, which container cleaning apparatus comprises at least one alkaline wash tank. Then, the pretreated container to be cleaned enters into the container cleaning apparatus and enters into the alkaline wash tank therein, wherein the container is cleaned with a cleaning solution in the alkaline wash tank.
  • the device for cleaning container has the following configuration in which the container pretreatment apparatus and the container cleaning apparatus are separately disposed.
  • the pretreatment for a container can be achieved by mounting a simple container pretreatment apparatus before entering into the cleaning system.
  • a simple container pretreatment apparatus By using such a dosing manner, the purpose of saving cost is achieved. Further, by using such a dosing manner, the additional position and additional amount of peroxide can be accurately controlled, thereby peroxide is sufficiently used and the overall amount of peroxide is lowered.
  • inside dosing manner means, the step of applying the pretreatment solution comprising peroxide to a container to be cleaned is carried out inside a container cleaning apparatus comprising an alkaline wash tank.
  • the container to be cleaned enters into the container cleaning apparatus first.
  • the container enters into an alkaline wash tank therein, and is cleaned with a cleaning solution in the alkaline wash tank.
  • the device for cleaning container has the following configuration, wherein the container pretreatment apparatus is disposed inside the container cleaning apparatus. That is, one or more lines of nozzles can be placed before each of the alkaline wash tank.
  • the pretreatment solution of the present invention is applied to the containers.
  • the container enters into the alkaline wash tank.
  • the pretreatment solution reacts with the alkaline solution in the alkaline wash tank to release bubbles for breaking the soils.
  • the peroxide solution used in the pretreatment step can be heated together with the cleaning solution in the alkaline wash tank, which means the energy supply in the prior art cleaning system and the water spray configurations in the can sufficiently used, resulting in more savings on energy cost.
  • the addition position and addition amount of peroxide can also be accurately controlled, thereby peroxide is sufficiently used and the overall amount of peroxide is lowered.
  • Container cleaning devices primarily comprise bottle washing machine, such as bottle washing machines made by KRONES, Germany, bottle washing machines made by Nanjing Light Industry Machinery Group, Hefei Zhongchen Light Industrial Machinery Co., Ltd. and the like.
  • bottle washing machines such as bottle washing machines made by KRONES, Germany
  • bottle washing machines made by Nanjing Light Industry Machinery Group, Hefei Zhongchen Light Industrial Machinery Co., Ltd. and the like.
  • One skilled in the art would know that the above exemplification is not an exhaustive for container cleaning devices suitable for the method of the present invention.
  • the method of the present invention can be applied using various container cleaning device in the art.
  • the experiments were conducted on recycled glass bottles provided by a beer brewery to verify the effects of the present invention.
  • the glass bottles are conventional 550ml glass beer bottle.
  • the mold spot coverage level on the recycled beer bottle is rated according to the following scaling:
  • a cleaning solution (which comprises 3 wt% sodium hydroxide, 500 ppm gluconic acid, 1500 ppm Bo-Cleaner C, 120 ppm Bo-Cleaner D, 100 ppm on-alkyl terminated aliphatic alcohol alkoxypolymer (BASF (China)) and 90 ppmethylenediaminepolyoxypropyleneether (Clariant Germany Inc.) was formulated by tap water in a lab environment. The cleaning solution was heated to a temperature of 60°C and held, then the two bottles were soaked into the cleaning solution at the same time.
  • the bottles were removed from the cleaning solution and left at room temperature. After 10 minutes, the bottles were emptied. The bottles were washed with warm water and then with cool water. Next, the bottles were stained with methylthionine chloride. Mold levels on the bottle bottom were rated through eye observation and pictures were taken. Meanwhile, the time for Al foil package and front and back labels removal time of the beer bottle was counted.
  • Comparative Example A1-A4 are summarized in the following table 1-1 and 1-2.
  • Table 1-1 Mold spot removal Comparative Example No. mold spot level before cleaning mold spot level after cleaning mold spot removal rate C.E.A1 4 2.5 37.50% C.E.A2 3.5 3 14.29% C.E.A3 4.5 3 33.33% C.E.A4 4 0 100.00%
  • Table 1-2 Label removal time (min) Comparative Example No.
  • Comparative Example A5 Two glass beer bottle with Al foil package and front and back labels were selected by eye observation, and pictures were taken.
  • a pretreatment solution was prepared by using tap water in a lab environment, the solution comprised 0.2wt% Stabilon BPU (Ecolab) and 3wt% sodium hydroxide.
  • the pretreatment solution was heated to a temperature of 45°C, then 60 ml pretreatment solution was added into the two bottles, and the two bottles were left under room temperature environment. After 5 minutes, the bottles were emptied. Next, the bottles were soaked into a 60°C alkaline cleaning solution comprising 0.2wt% BPU and 3wt% sodium hydroxide. After 10 minutes, the bottles were emptied. The bottles were then cleaned with warm water followed by cool water. Next the bottles were stained with methylthionine chloride. Mold spot level of the bottle bottom was rated through eye observation and pictures were taken. Meanwhile, the time for Al foil package and front and back labels removal time of the beer bottle was counted.
  • Comparative Example A5-A8 are summarized in the following table 2-1 and 2-2.
  • Table 2-1 Mold spot removal Comparative Example No. mold spot level before cleaning mold spot level after cleaning mold spot removal rate C.E.A5 5 3 40% C.E.A6 4.5 3 33.33% C.E.A7 5 3 40% C.E.A8 4.5 3 33.33%
  • Table 2-2 Label removal time (min) Comparative Example No. Al foil removal time Front label removal time Back label removal time C.E.A5 Failure* 7 Failure* C.E.A6 Failure* 4 4 C.E.A7 Failure* 4 10 C.E.A8 10 4 4 Average Time 12.25 4.75 7.75 *When calculating average time, the experiment marked with "failure” is counted as 13 minutes. A "failure” resulted when the label was not removed.
  • Comparative Example A9 Two glass beer bottles with Al foil package and front and back labels were selected by eye observation, and pictures were taken.
  • the cleaning solution was prepared by tap water in a lab environment, the solution comprised 0.2wt% Stabilon BPU (Ecolab) and 3wt% sodium hydroxide.
  • the cleaning solution was heated to a temperature of 80°C and held, then the two bottles were soaked in the cleaning solution at the same time. After 10 minutes the bottles were emptied. The bottles were then cleaned with warm water followed by cool water. Next the bottles were stained with methylthionine chloride. Mold spot levels on the bottle bottoms were rated through eye observation and pictures were taken. Meanwhile, the time for Al foil package and front and back labels removal time of the beer bottle was counted.
  • Comparative Example A9-A14 are summarized in the following table 3-1 and 3-2.
  • Table 3-1 Mold spot removal Comparative Example No. mold spot level before cleaning mold spot level after cleaning mold spot removal rate C.E.A9 5 3.5 30% C.E.A10 4.5 0 100% C.E.A11 5 1.5 70% C.E.A12 4.5 2.5 44.44% C.E.A13 4.5 2 55.56% C.E.A14 4 1.5 62.50%
  • Table 3-2 Label removal time (min) Comparative Example No.
  • the cleaning solution comprised 3wt% sodium hydroxide solution, 500 ppm gluconic acid, 1500 ppm Bo-Cleaner C, 120 ppm Bo-Cleaner D, 100 ppm non-alkyl terminated aliphatic alcohol alkoxy polymer (BASF (China)), 90 ppm ethylenediamine polyoxypropylene ether (Clariant Germany Inc.), 120 ppm phosphate (Dow Chemicals (Shanghai) Ltd.), 100 ppm aliphatic alcohol polyoxyethylene ether (Dow Chemicals (Shanghai) Ltd.) and 160 ppm Genapol DF 5050 (Clariant Germany Inc.).
  • the recycled bottle was soaked in the cleaning solution.
  • Comparative Example A6-A9 are summarized in the following table 5-1 and 5-2.
  • Table 5-1 Mold spot level Example No. Mold spot level before cleaning Mold spot level after cleaning Mold spot removal rate Ex.A6 4 2 50% Ex.A7 4 2 50% Ex.A8 4 1 75% Ex.A9 4 1 75%
  • Table 5-2 Label removal time (min) Comparative Example No. Al foil removal time Front label removal time Back label removal time Ex.A6 7 7 7 Ex.A7 4 4 4 4 Ex.A8 7 4 7 Ex.A9 7 7 4 Average Time 6.25 5.5 5.5
  • Two glass beer bottle with Al foil package and front and back labels were selected by eye observation, and were taken pictures.
  • hydrogen peroxide 50 wt%, Mitsubishi Gas Chemical Shanghai Commerce Limited
  • the pretreatment solution was heated to 45°C for use.
  • Thirty ml of the pretreatment solution was added into the two bottles, and the two bottles were left under room temperature environment for 4 minutes and then emptied.
  • the bottles were soaked into the alkaline cleaning solution as in Comparative Example 1. After 10 minutes, the bottles were emptied. The bottles were cleaned with warm water followed by cool water. The bottles were stained by methylthionine chloride. Mold levels on the bottle bottom were rated through eye observation and pictures were taken.
  • Example A10 The procedures of Example A10 as repeated to respectively carry out Example A11-A15.
  • Example A10-A15 are summarized in the following table 6.
  • Table 6-1 Mold spot removal Example No. Mold spot level before cleaning Mold spot level after cleaning Mold spot removal rate Ex.A10 4 0 100% Ex.A11 4.5 3 33.33% Ex.A12 4.5 1 77.78% Ex.A13 5 2.5 50% Ex.A14 4 0 100% Ex.A15 4 0.5 87.5% Table 6-2; Label removal time (min) Comparative Example No. Al foil removal time Front label removal time Back label removal time Ex.A10 7 4 7 Ex.A11 7 7 4 Ex.A12 7 7 4 Ex.A13 7 7 4 Ex.A14 10 4 7 Ex.A15 7 4 7 Average Time 7.5 5.5 5.5
  • the following table 7 summarizes average mold spot cleaning effect of each of Comparative Examples and Examples in the above Part A.
  • the average mold spot cleaning effects are the arithmetic average of the mold spot removal rate obtained from the each set of Comparative Examples and Examples.
  • Table 7 No. Cleaning Manner Average cleaning effect on mold spot Comparative Example A1-A4 Conventional cleaning manner, no pretreatment, cleaning temperature 60°C 46.28% Comparative Example A5-A8 Precleaning with an alkaline solution, cleaning temperature 60°C 36.67% Comparative Example A9-A14 Cleaning with an alkaline solution, no precleaning, cleaning temperature 80°C 62.50% Comparative Example A1-A5 Precleaning with hydrogen peroxide pretreatment solution - "inside dosing" 73.20% Comparative Example A6-A9 Precleaning with hydrogen peroxide pretreatment solution - "outside dosing" 67.5%
  • Example A10-A15 Precleaning with hydrogen peroxide pretreatment solution - "outside dosing" 74.77%
  • the mud coverage level on recycled beer bottles is rated according to the following scaling:
  • Mud removal rate ( Mud level before cleaning - Mud level after cleaning ) / Mud level before cleaning ⁇ 100 ⁇ %
  • Comparative Example B1 Two glass beer bottles with relatively high mud coverage level were selected through eye observation, and pictures were taken. In Comparative Example B1, no pretreatment was carried out on the beer bottles to be cleaned. Under lab environment, tap water was used to prepare a cleaning aqueous solution, which comprises 3wt% sodium hydroxide, 500ppm gluconic acid, 1500 ppm Bo-Cleaner C (Ecolab), 120 ppm Bo-Cleaner D (Ecolab), 100 ppm non-alkyl terminated aliphatic alcohol alkoxy polymer (BASF (China)) and 90 ppm ethylenediamine polyoxypropylene ether (Clariant Germany Inc.).
  • a cleaning aqueous solution which comprises 3wt% sodium hydroxide, 500ppm gluconic acid, 1500 ppm Bo-Cleaner C (Ecolab), 120 ppm Bo-Cleaner D (Ecolab), 100 ppm non-alkyl terminated aliphatic alcohol alkoxy poly
  • the cleaning solution was heated to a temperature of 60°C and held, then the two bottles were soaked into the cleaning solution at the same time. After 10 minutes, the bottles were emptied. Then, the bottles were cleaned with warm water, then with cool water. Next, the mud level was rated through eye observation and pictures were taken.
  • Comparative Example B1-B4 The results of Comparative Example B1-B4 are summarized in the following Table 8.
  • Table 8 Comparative Example No. Mud level before cleaning Mud level after cleaning Mud removal rate C.E.B1 3 0.5 83.33% C.E.B2 3.5 0.5 85.71% C.E.B3 3 1 66.67% C.E.B4 5 2 60%
  • Comparative Example B5 Two glass beer bottles with relatively high mud coverage level were selected through eye observation, and pictures were taken.
  • a pretreatment solution was prepared by tap water under lab environment, the solution comprises 0.2wt% Stabilon BPU (Ecolab) and 3wt% sodium hydroxide.
  • the pretreatment solution was heated to a temperature of 45°C, then 60 ml pretreatment solution was added into the two bottles, and the two bottles were left under room temperature environment. After 5 minutes, the bottles were emptied. Next, the bottles were soaked into an alkaline cleaning solution comprising 0.2wt% BPU and 3wt% sodium hydroxide. After 10 minutes, the bottles were emptied. Then, the bottles were cleaned with warm water, then with cool water. The mud level was rated through eye observation and pictures were taken.
  • Comparative Example B5-B8 The results of Comparative Example B5-B8 are summarized in the following Table 9. Table 9 Comparative Example No. Mud level before cleaning Mud level after cleaning Mud removal rate C.E.B5 3 2.5 16.67% C.E.B6 4.5 3.5 22.22% C.E.B7 4.5 1.5 66.67% C.E.B8 3.5 3 14.29%
  • Comparative Example B9-B12 The results of Comparative Example B9-B12 are summarized in the following Table 10.
  • Table 10 Comparative Example No. Mud level before cleaning Mud level after cleaning Mud removal rate C.E.B9 3.5 1.5 57.14% C.E.B10 3.5 1.5 57.14% C.E.B11 5 3 40% C.E.B12 5 2 60%
  • Example B1 hydrogen peroxide pretreatment solution cleaning -- "outside dosing"
  • Two glass beer bottles with relatively high mud coverage level were selected through eye observation, and were taken pictures.
  • hydrogen peroxide 50 wt%, Mitsubishi Gas Chemical Shanghai Commerce Limited
  • the pretreatment solution was heated to 45°C for use.
  • Thirty ml above pretreatment solution was added into the two bottles, and the two bottles were left under room temperature environment for 4 minutes and then emptied.
  • the bottles were soaked in the alkaline cleaning solution as in Comparative Example 1. After 10 minutes the bottles were emptied. The bottles were then cleaned with warm water followed by cool water. The mud level was rated through eye observation and pictures were taken.
  • Example B1 The procedure of Example B1 was repeated to respectively carry out Example B1-B4.
  • Example B1-B4 are summarized in the following Table 11.
  • Table 11 Example No. Mud level before cleaning Mud level after cleaning Mud removal rate Ex.B1 3.5 0.5 85.71% Ex.B2 3.5 1 71.43% Ex.B3 3.5 1 71.43% Ex.B4 4.5 1 77.78%
  • the following table 12 summarizes the average cleaning effects of various Comparative Example and various Example.
  • the average cleaning effects are the arithmetic averages of Mud removal rates obtained from each set of Comparative Examples and Examples.
  • Part C Verification on controllable addition amount of hydrogen peroxide
  • an alkaline cleaning solution provided by a beer brewery was added in a beaker, and then hydrogen peroxide. Titration was carried out with a sodium thiosulfate titration method. Titration was carried out every 5 minutes. The decomposition rate of hydrogen peroxide in the alkaline solution was tested. The additional amount of hydrogen peroxide was calculated by the volume of the alkaline wash tank of the brewery to be 25-100 kg/hour. The additional amount correlates with the contamination level in the alkaline solution. It can be seen that the amount of hydrogen peroxide cannot be controlled by directly adding hydrogen peroxide into an alkaline wash tank of a bottle washing machine due to different contamination levels in the alkaline solution.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)

Claims (11)

  1. Procédé de prétraitement d'un récipient, comprenant l'application d'une solution de prétraitement sur un récipient devant être nettoyé comprenant du peroxyde et ensuite le transport du récipient prétraité dans un réservoir de lavage alcalin destiné au nettoyage, le réservoir de lavage alcalin étant sensiblement exempt de peroxyde et le prétraitement étant réalisé dans une plage de températures comprise entre 35 et 45 °C.
  2. Procédé de prétraitement d'un récipient selon la revendication 1, dans lequel le peroxyde est composé de peroxyde d'hydrogène, de peroxyde de sodium, de peroxyde de calcium, d'acide oléique peroxyde sulfuré, d'acide péroacétique, d'acide péroctanoïque et du mélange de ceux-ci.
  3. Procédé de prétraitement d'un récipient selon la revendication 1, dans lequel le peroxyde est le peroxyde d'hydrogène.
  4. Procédé de prétraitement d'un récipient selon la revendication 1, la concentration du peroxyde étant comprise entre 0,1 et 1 % en poids.
  5. Procédé de prétraitement d'un récipient selon l'une quelconque des revendications 1 à 4, dans lequel la concentration du peroxyde est comprise entre 0,3 et 0,5 % en poids.
  6. Procédé de prétraitement d'un récipient selon l'une quelconque des revendications 1 à 4, dans lequel la solution contient du peroxyde uniquement en tant que principe actif.
  7. Procédé de prétraitement d'un récipient elle selon l'une quelconque des revendications 1 à 4, dans lequel la solution comprend de l'eau courante.
  8. Procédé de prétraitement d'un récipient selon l'une quelconque des revendications 1 à 4, dans lequel le réservoir de lavage alcalin comprend une solution alcaline, la solution alcaline comprenant une source alcaline choisie parmi un hydroxyde de métal alcalin, un hydroxyde de métal alcalino-terreux et un agent alcalin organique.
  9. Procédé de prétraitement d'un récipient selon la revendication 8, dans lequel la solution alcaline comprend en outre un adjuvant choisi parmi un agent de chélation et un tensioactif.
  10. Procédé de prétraitement d'un récipient selon la revendication 1, dans lequel le récipient est choisi parmi une bouteille en verre et une bouteille en plastique.
  11. Procédé de prétraitement d'un récipient selon la revendication 10, dans lequel la bouteille en verre est une bouteille de bière.
EP15824652.0A 2014-07-23 2015-07-18 Procédé permettant le prétraitement d'un récipient et procédé et dispositif permettant le nettoyage d'un récipient Active EP3171994B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410353894.2A CN105268708A (zh) 2014-07-23 2014-07-23 预处理容器的方法，和清洗容器的方法及设备
PCT/US2015/041040 WO2016014367A1 (fr) 2014-07-23 2015-07-18 Procédé permettant le prétraitement d'un récipient et procédé et dispositif permettant le nettoyage d'un récipient

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EP3171994A1 EP3171994A1 (fr) 2017-05-31
EP3171994A4 EP3171994A4 (fr) 2018-01-10
EP3171994B1 true EP3171994B1 (fr) 2019-03-06

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CN109022167A (zh) * 2018-07-02 2018-12-18 河南绿澳化工科技有限公司 一种玻璃瓶用复合碱性清洗剂及其制备方法
CN108672441A (zh) * 2018-07-19 2018-10-19 广州风行乳业股份有限公司 一种巴氏牛奶回收玻璃瓶的清洗消毒方法

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Publication number Priority date Publication date Assignee Title
GB9423952D0 (en) * 1994-11-24 1995-01-11 Unilever Plc Cleaning compositions and their use
DE69614709T2 (de) * 1995-12-01 2002-03-07 Unilever N.V., Rotterdam Verfahren zum waschen von flaschen
JPH11156312A (ja) * 1997-11-20 1999-06-15 Ricoh Co Ltd 洗浄装置
US7857913B2 (en) * 2003-06-26 2010-12-28 Spindler William E Cleaning compound for cleaning surfaces in a food processing environment
US8114222B2 (en) * 2004-08-27 2012-02-14 Ecolab Usa Inc. Method for cleaning industrial equipment with pre-treatment
AU2005305095B2 (en) * 2004-11-03 2011-07-14 Diversey, Inc. Method of cleaning containers for recycling
DE102007003748A1 (de) * 2007-01-19 2008-07-24 Lutz Ehrlich Verfahren zum Entfernen eines Biofilms in einem wasserführenden System
DE102009039965A1 (de) * 2009-09-03 2011-04-07 Khs Gmbh Verfahren zur Innenreinigung einer Flaschen- oder Behälterreinigungsmaschine sowie Flaschen- oder Behälterreinigungsmaschine
CN201702149U (zh) * 2010-05-01 2011-01-12 华润雪花啤酒(天门)有限公司 一种可回收洗瓶碱液的洗瓶机
CN103849498A (zh) * 2012-11-29 2014-06-11 埃科莱布美国股份有限公司 清洗添加剂及使用该清洗添加剂的清洗方法
CN203253686U (zh) * 2013-05-20 2013-10-30 北京三元食品股份有限公司 全自动清洗系统

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EP3171994A1 (fr) 2017-05-31
CN105268708A (zh) 2016-01-27
EP3171994A4 (fr) 2018-01-10

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