EP0937133B1 - Nettoyage de conduites et de recipients dans l'industrie alimentaire - Google Patents

Nettoyage de conduites et de recipients dans l'industrie alimentaire Download PDF

Info

Publication number
EP0937133B1
EP0937133B1 EP97945841A EP97945841A EP0937133B1 EP 0937133 B1 EP0937133 B1 EP 0937133B1 EP 97945841 A EP97945841 A EP 97945841A EP 97945841 A EP97945841 A EP 97945841A EP 0937133 B1 EP0937133 B1 EP 0937133B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
water
ether
containers
cleaned
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.)
Expired - Lifetime
Application number
EP97945841A
Other languages
German (de)
English (en)
Other versions
EP0937133A2 (fr
Inventor
Dietmar Rossner
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.)
Ecolab Inc
Original Assignee
Ecolab GmbH and Co OHG
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 Ecolab GmbH and Co OHG filed Critical Ecolab GmbH and Co OHG
Publication of EP0937133A2 publication Critical patent/EP0937133A2/fr
Application granted granted Critical
Publication of EP0937133B1 publication Critical patent/EP0937133B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • 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
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/835—Mixtures of non-ionic with cationic compounds
    • 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
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C11D10/045—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on non-ionic surface-active compounds and soap
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • C11D1/523—Carboxylic alkylolamides, or dialkylolamides, or hydroxycarboxylic amides (R1-CO-NR2R3), where R1, R2 or R3 contain one hydroxy group per alkyl group
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides
    • 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

Definitions

  • the invention is in the field of cleaning pipelines and containers in the food industry, such as pipe and / or container cleaning in in the beverage industry, in breweries, dairy farms etc. It relates to the use of cleaning agents known per se for hard surfaces in one Process that cleans the inside of pipes and / or containers.
  • CIP cleaning-in-place
  • COP cleaning-on-place
  • the inner surfaces of pipes and containers are cleaned using the CIP process.
  • detergent solutions and rinsing water are provided in tanks with a volume of 2 - 20,000 liters in so-called CIP tanks.
  • the cleaning and rinsing liquids are fed to the tank or piping system to be cleaned by means of a pump via valves and pipelines and applied as static film or rotating spray systems as a trickle film or by flooding on their inner walls.
  • the cleaning effect results from the chemical / physical cleaning effect of the applied cleaning solution, the cleaning temperature, the treatment time and the mechanical cleaning effect.
  • the cleaning liquids run under the tank or out of the pipelines and are returned to the CIP tanks by means of a second pump via a return line with appropriate valves.
  • the pre-rinse water is usually directed to the sewage system, and fresh water used as rinse water is collected in the pre-rinse tank for the next pre-rinse. More complex cleaning processes consist of several cleaning steps and one disinfection step.
  • the individual cleaning steps and disinfection are separated by an intermediate rinse with fresh water.
  • the intermediate rinses serve to return the cleaning solutions and remove the residues from the tank and pipe walls.
  • the solutions from the intermediate rinses are usually also fed to the pre-rinse tank.
  • CIP systems for this more complex process have correspondingly more CIP tanks, e.g. pre-rinse tank, tank for alkaline cleaning, tank for acid cleaning, disinfectant tank and fresh water tank. If necessary, the detergent tanks are designed to be heated so that hot cleaning can be carried out.
  • the process described above is referred to as "stacked" CIP cleaning or "stack cleaning", since here the solutions are "stacked" in the CIP tanks for reuse, if necessary after cleaning by membrane filtration. In contrast to this, with the "lost" cleaning variant, the solutions are fed into the sewerage at the end of the cleaning step and not "stacked".
  • Losses of water and detergents are retained during batch cleaning Limits, with a well-set CIP procedure one expects a loss of 5 - 10%.
  • This Losses refer to the volume that is in the supply lines from the CIP tank to the spray head on the tank to be cleaned, in the tank itself and in the return line the so-called circulation volume. The losses arise through partial Mixing of the individual phases (pre-rinse water, cleaning agent solutions, Rinsing water) in the pipes and especially in the tank as well as switching delays when switching valves.
  • foam-free cleaning solutions are used. This is because e.g. one only half-full pipe, the other half with foam on the cleaning solution floats, is wetted, and is completely cleaned, since the mechanical and chemical cleaning power of the foam does not match that of the cleaning solution. Foaming is also undesirable in containers because the foam is rinsed out considerable time and water losses as there are in the tanks Only respond to the level indicator after the foam has been completely removed.
  • WO-A-94/18 301 (Laporte E.S.D.) the use of a strong alkaline, aqueous, highly viscous cleaning agent for cleaning Metal kettles that are used in the food industry are described.
  • These cleaning agents contain at least 40% by weight of solids and consist of sodium hydroxide, a polyacrylic acid salt and others Auxiliaries, builders, surfactants and complexing agents.
  • DE-A-36 35 357 (Wellhoener) relates to a method for cleaning and Germ reduction in the beverage industry, especially in the brewery, consisting of the following process steps: 1) pre-rinsing with water, 2) Cleaning rinsing, 3) intermediate rinsing with water, 4) disinfection rinsing, 5) Final rinse with fresh water.
  • the cleaning rinse and the Disinfection rinsing with an alkali, preferably sodium hydroxide solution an additive is added to the lye, which is a surfactant and optionally Contains complexing agents and solubilizers. This is the process a "lost" CIP process.
  • US-A-4,935,065 (Ecolab Inc.) relates to a "stacked" CIP cleaning process for use in the food industry. It will Cleaner concentrates used, the alkali metal hydroxide, active chlorine compounds, Contain acrylic polymers and organic phosphonic acids.
  • the invention has for its object an improved method for cleaning of pipelines and containers in the food industry.
  • the disadvantages of the "lost" CIP cleaning are to be avoided and thus a same or better cleaning success with less water and Use of detergents, lower energy costs and reduced cleaning and Downtime can be achieved.
  • a method for Cleaning of pipes and containers in the food industry thereby characterized in that a water-thickenable cleaner concentrate, containing surfactant components and / or diluents and / or Complexing agent and other components of cleaning agents, with water to an application concentration of 0.2 to 10 wt .-%, that is by one Diluted factor between 10 and 500, the aqueous cleaning solution thus obtained then applied to the inner surfaces to be cleaned and after one Rinse with water for 1 to 60 minutes, taking this Detergent as part of a "lost" cleaning-in-place (CIP) cleaning be used.
  • a water-thickenable cleaner concentrate containing surfactant components and / or diluents and / or Complexing agent and other components of cleaning agents
  • the water with the Application dilution solution understood while using Detergent or cleaner concentrate is the undiluted, thin solution of Ingredients is meant.
  • Such water-thickenable cleaner concentrates are harder for cleaning Surfaces (COP cleaning) in the food industry are known in the prior art and broadly described. Because of their adhesive properties and / or their foaming power So far, however, these cleaners have only been used for COP cleaning or Cleaning of open sanitary objects such as toilet bowls or bathtubs restricted been because when cleaning closed systems disadvantages in terms of Cleaning performance and / or the rinsability of the foam were feared.
  • these water-thickenable cleaner concentrates can also be used for CIP cleaning can be used, the use of film-forming cleaners, Gel cleaners and rheopexic cleaners are preferred.
  • EP-B-265 979 (Akzo) describes thickening premixes for the production of thickened aqueous single-phase detergents known from 0.1 to 10 wt .-% a surfactant, which can be, for example, a tertiary amine oxide, and 0.01 to 3% by weight an organic anionic sulfonate exist.
  • a surfactant which can be, for example, a tertiary amine oxide, and 0.01 to 3% by weight an organic anionic sulfonate exist.
  • This thickened watery Cleaning agents show thixotropic behavior, which means that they have a high viscosity at low shear forces.
  • EP-A-276 501 (Akzo) are thickened, aqueous Known detergent with thixotropic behavior, which is a primary, secondary or tertiary amine or diamine with at least one of at least 10 carbon atoms existing hydrocarbon residue as well as an organic sulfonate and a weak one Contain acid with a pK value less than 2.0.
  • Other documents dealing with deal with thickening detergent concentrates for example WO96 / 21721 (Jeyes Group PLC), EP-A-0 724 013 (Colgate-Palmolive) and US-5,078,896 (Akzo).
  • German published patent application DE 195 ⁇ 04 ⁇ 192 (Henkel KGaA) describes thickening aqueous cleaning agents for hard surfaces which contain a combination of at least one tertiary amine oxide, at least one alkyl polyglycoside and at least one water-soluble organic solvent selected from the group of mono- or polyvalent ones Alcohols, the glycol ether and the alkanolamines contain. This document does not disclose the use for inner surfaces of pipelines or containers.
  • WO95 / 02664 also describes thickenable substances by adding water Cleaners that are either ether sulfates, optionally in combination with other surfactants, or cationic surfactants, optionally together with Nonionic surfactants. Again, only use on hard ones external surfaces such as toilet bowls, walls or floors.
  • U.S. Patent 4,842,771 (Akzo N.V.) describes cleaning solutions which are described in Shear stress reduce their viscosity (thioxotropic behavior) and quaternary Ammonium salts or amine oxides and cumene sulfonate, xylene sulfonate, toluenesulfonate or mixtures of the sulfonates. These funds are for use on non-horizontal hard surfaces can be used.
  • EP-A-0 595 590 discloses a chlorine free, low alkaline Detergent concentrate, the amine oxides, anionic surfactants, a hydrophobically modified Contains polymer, a thinner and alkalis and a gel film on hard surfaces formed.
  • EP-A-0 314 232 discloses water thickeners Detergent concentrates described that a surfactant from the group of amines, Amine oxides and quaternary ammonium salts, a cosurfactant, ionizable compounds as well as water. These cleaners are also used for hard surfaces used.
  • Cleaner concentrates that can be thickened with water therefore contain surfactants Components, both anionic surfactants, cationic surfactants and nonionic surfactants as well possibly amphoteric surfactants are used, diluents, acidic or alkaline Components, builders and cobuilders, for example polymers and other active ingredients Excipients.
  • the cleaner concentrate contain further components, for example additional alkalis, Chelating agents, further anionic and / or nonionic surfactants, enzymes, Preservatives, sequestering agents, oxidizing (bleaching) agents, dyes and / or perfumes.
  • the main anionic surfactants used in thickening cleaners are alkyl sulfates and sulfonates, alkylbenzenesulfonates (ABS), ⁇ -sulfofatty acid esters (ester sulfonates), in short and long-chain glycerol esters, fatty alcohol sulfates (FAS), alkyl sulfosuccinic acid (ASB) as well as soaps.
  • anionic surfactants from the above groups are the commercially available Eltesol® SX30 (sodium xylene sulfonate, commercial product from Albright & Wilson), Triton® H55 (potassium phosphate ester, Hendels product from Union Carbide), Marlinat® DF8 (sodium sulfosuccinate, commercial product of the company Hüls), Hostapur® SAS 30X (sodium alkane sulfonate, commercial product from Hoechst), Hostapur® 0S (sodium olefin sulfonate, commercial product from Hoechst), Petronat® S (Sodium petroleum sulfonate, commercial product from Witco), Hamposyl® L 30 (Sodium lauroyl sarcosinate, commercial product from Hampshire); Fenopon® T33 (Sodium-N-methyl-N-oleyl taurate, commercial product from GAS) and Fenopon® AC 78 (sodium coconut isoth
  • Cationic surfactants used in thickening cleaner concentrates come from the group of quaternary ammonium salts, the primary, secondary and tertiary amines and their salts and the polyamines.
  • Examples of such Cationic surfactants are Empigen® BAC (alkyldimethylbenzalkonium chloride, commercial product from Albright & Wilson), Armac® 1 (tallow amine acetate amine salts, commercial product from Akzo), Synprolan® 35N3 (N-alkyl propanediamine, commercial product from the company ICI) and Symprolan® 35 X10 (ethoxylated primary amine with 10 EO, commercial product from the company ICI).
  • Nonionic surfactants used in water-thickening cleaner concentrates come from the group of amine oxides, glucosides and alkyl polyglucosides (APG), the alkoxylated fatty alcohols and their esters, the alkoxylated fatty acids and Alkylphenols, the alkanolamides and their alkoxylation products, sucrose and Sugar esters, fatty acid esters and alkyl amines.
  • APG alkyl polyglucosides
  • Examples include Synperonic® A (alcohol ethoxylates, commercial product from ICI), Crodet® L24 (polyoxyethylene-24-lauric acid, Commercial product from Croda), Synperonic® NP nonylphenol ethoxylates, Commercial product from ICI), Empilan® CME (coconut monoethynolamide, Commercial product from Albright & Wilson), Triton® CG110 (Alkyl glucoside, commercial product from Union Carbide), Glucam® E10 (Methylglucoside with 10 EO, commercial product from Amerchol), Crodesta® SL 40 (Sucrose cocoate, commercial product from Croda), Empilan® MAA (ethoxylated Coconut monoethanolamide, commercial product from Albright & Wilson), Ethomeen® C12 (ethoxylated coconut amine, commercial product from Akzo) and Tegosoft® 16 B (cetyl isooctanoate, commercial product from Goldschmidt).
  • amphoteric surfactants mostly only in combination with Anionic surfactants are selected from the group of alkyl betaines, Alkylaminopropionates, alkyliminodipropionates, alkylglycinates, carboxyglycinates, Alkylimidazolines sulfobetaines, alkyl polyaminocarboxylates and Polyamphocarboxyglycinate.
  • Tegobetain® A4080 Alkyldimethylbetaine, commercial product from Goldschmidt
  • Ampholak® XCU Coconut amphoglycolate, commercial product from Bero Nobel
  • Amphotensid CT® Alkylimidazoline based amphoteric surfactant, commercial product from Zschimmer and Black
  • Ampholak® XCO 30 coconut amphocarboxyglycinate, commercial product of Bero Nobel
  • Sandobet® SC coconut amide sulfobetaine, commercial product of Sandoz.
  • the Solubilizers selected from ethanol, n- or i-propanol, butanols, glycol, Propane or butanediol, glycerol, diglycol, propyl or butyl diglycol, Ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, Ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, Diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, Dipropylene glycol methyl or ethyl ether, methoxy, ethoxy or butoxytriglycol, 1-butoxyethoxy-2-propanol
  • Known builders that can be used in water-thickenable cleaner concentrates are monomeric or oligomeric phosphates such as, for example, monophosphates, pyrophosphates, triphosphates and cyclic or polymeric metaphosphates.
  • Organic builder substances can preferably be selected from the polymers and copolymers of acrylic acid, hydroxyacrylic acid, maleic acid and allyl alcohol.
  • Poly (tetramethylene-1,2-dicarboxylates) and poly (4-methoxytetramethylene-1,2-dicarboxylates) can also be used.
  • the inorganic and organic builders mentioned are used in the form of their water-soluble salts, in particular their sodium or potassium salts.
  • alkali metal hydroxides sodium or, for example, are additional alkalis Potassium carbonate and sodium or potassium silicates into consideration.
  • suitable Chelating agents are, for example, the alkali salts of Ethylenediaminetetraacetic acid (EDTA) or nitrilotriacetic acid (NTA) as well Alkali metal salts of anionic polyelectrolytes such as polyacrylates, polymaleates and Polysulfones.
  • EDTA Ethylenediaminetetraacetic acid
  • NTA nitrilotriacetic acid
  • anionic polyelectrolytes such as polyacrylates, polymaleates and Polysulfones.
  • low molecular weight hydroxycarboxylic acids such as citric acid, Suitable tartaric acid, malic acid or gluconic acid.
  • Suitable complexing agents be further selected from organophosphonates such as 1-hydroxyethane-1,1-diphosphonic acid (HEDP), Aminotri (methylenephosphonic acid) (ATMP), Diethylenetriaminepenta (methylenephosphonic acid) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBS-AM).
  • organophosphonates such as 1-hydroxyethane-1,1-diphosphonic acid (HEDP), Aminotri (methylenephosphonic acid) (ATMP), Diethylenetriaminepenta (methylenephosphonic acid) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBS-AM).
  • Oxidizing agents can also be added to the thickenable agents in order to be able to better remove oxidatively bleachable dirt and / or to simultaneously remove germs from the surfaces to be cleaned.
  • the oxidizing agent is preferably not used in the cleaning agent concentrate, but rather is introduced via the water used for the dilution, which may contain H 2 O 2 , for example.
  • the method according to the invention has now compared to the conventional "lost" CIP process has the advantage that pipes and containers are not permanently rinsed must, but a "pulsating" cleaning from wetting and exposure time can.
  • a "pulsating" cleaning from wetting and exposure time can be sticking to the inner walls or slowly running down Detergents also appear in the pipes, vertical currents, which the Improve cleaning success.
  • the cleaning agent film or foam runs in containers slower from the surface than the solution in the conventional CIP process, see above that different shear loads occur in the wetting and action phases act on the dirty wall, which also improves cleaning success.
  • rheopexes that is to say, are particularly advantageous Viscosity-increasing cleaning agents are used under shear stress.
  • the Advantages of this method according to the invention are that the application of the rheopex cleaning solution due to the action of shear forces during application leads to a stable foam or film that slowly liquefies as a result on the one hand the exposure time to the surfaces to be cleaned compared to a large-pored one Foam increases, on the other hand there is an additional mechanical one Cleaning effect that the known film-forming cleaners do not have.
  • a rinsing of the surfaces required in prior art methods with hot water can be done but is not necessary as the Cleaning solution light and residue-free with little use of cold water can be removed.
  • the pre-cleaning of the surfaces can also be completely eliminated.
  • cleaning agents for hard surfaces in the state of the art food industry Technology can be used in the inventive method.
  • cleaning agent with regard to its physical Properties considering the desired cleaning temperature select. In dairies, for example, cleaning temperatures are between 50 and 70 ° C preferred, while in breweries between 0 and 10 ° C, especially at Fermentation cellar temperature (5 ° C) is cleaned and in the beverage industry in general Cleaning temperatures between 10 to 90 ° C, preferably between 20 and 70 ° C. be applied.
  • compositions mentioned below illustrate the different possibilities, cleaner concentrates for use in the invention Manufacturing process.
  • the viscosity values are dependent on the dilution also specified.
  • Table 1 contains a selection of formulations of rheopexic, water-thickening cleaner concentrates.
  • Table 2 shows the viscosities of the compositions in their original composition and after dilution with water by a factor of 5, a factor of 10 and a factor of 20, that is to say as 20%, 10% and 5% aqueous preparations.
  • the viscosity measurements were carried out at a sample temperature of 20 ° C using a Brookfield digital viscometer, model LVTDV-II using spindle No. 1 (LV series code number 61) with a spindle rotation of 30 revolutions / minute, the value after 10 seconds Measuring time was read.
  • Table 3 contains a selection of formulations of low-foaming, water-thickening cleaner concentrates.
  • Table 4 shows the viscosities of the compositions in their original composition and after dilution with water by a factor of 10 and a factor of 20, that is to say as 10% and 5% aqueous preparations. The viscosity measurements were carried out at a sample temperature of 20 ° C. using a Brookfield digital viscometer, model LVTDV-II, using spindle No. 1 (LV series code number 61) with a spindle rotation of 30 revolutions / minute.
  • compositions in% by weight S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 A 6.0 6.0 6.0 6.0 6.0 20.0 20.0 1.0 20.0 B 3.0 4.0 4.0 4.0 4.0 13.0 13.0 0.6 1.0 C - - - - - 4.0 - - - - diglycol - - 2.0 2.0 - - - - - - i-propanol 8.0 2.0 2.0 2.0 - - 10.0 - 0.5 10.0 ethanol - - - - 8.0 - - - - - triethanolamine - - - - - - - - - 10.0 - - NaOH 50% - - - 15.0 - - - - - - - - - water 83.0 88.0 86.0 71.0 82.0 86.0 57.0 57.0 87.9 69.0 A: Bis (2-hydroxyethyl) tallow fatty amine N
  • Table 5 contains a selection of formulations of film- and gel-forming, water-thickenable cleaner concentrates.
  • the viscosities of the agents in their diluted form are so high that stable gel films form on the surfaces to be cleaned.

Landscapes

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

Claims (11)

  1. Procédé pour le nettoyage de conduites et de récipients dans l'industrie alimentaire,
    caractérisé en ce qu'
    on dilue avec de l'eau, à une concentration d'utilisation de 0,2 à 10 % en poids, c'est-à-dire par un facteur compris entre 10 et 500, un concentré de produit de nettoyage pouvant être épaissi avec de l'eau, contenant des composants tensioactifs et/ou des diluants et/ou des complexants ainsi que d'autres composants de produits de nettoyage, on applique ensuite sur les surfaces internes à nettoyer la solution aqueuse de nettoyage ainsi obtenue, et, après un temps d'action de 1 à 60 minutes, on rince avec de l'eau, ce produit de nettoyage étant utilisé dans le cadre d'un nettoyage cleaning-in-place (CIP) "perdu".
  2. Procédé selon la revendication 1
    caractérisé en ce que
    le concentré de produit de nettoyage est dilué avec de l'eau, avant l'application sur les surfaces internes, à une concentration d'utilisation de 0,5 à 2 % en poids, c'est-à-dire par un facteur compris entre 50 et 200.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'
    on utilise des produits de nettoyage en gel pouvant être épaissis avec de l'eau.
  4. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'
    on utilise des produits de nettoyage rhéopexes pouvant être épaissis avec de l'eau.
  5. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'
    on utilise des mélanges, pouvant être épaissis avec de l'eau, à base de produits de nettoyage en gel et/ou rhéopexes.
  6. Procédé selon une ou plusieurs des revendications 1 à 5,
    caractérisé en ce qu'
    on nettoie des conduites et/ou des récipients en brasserie, à des températures de 0 à 10°C.
  7. Procédé selon une ou plusieurs des revendications 1 à 5,
    caractérisé en ce qu'
    on nettoie des conduites et/ou des récipients dans l'industrie des boissons, à des températures de 10 à 90°C, de préférence de 20 à 70°C.
  8. Procédé selon une ou plusieurs des revendications 1 à 5,
    caractérisé en ce qu'
    on nettoie des conduites et/ou des récipients dans l'industrie de la laiterie, à des températures de 50 à 70°C.
  9. Procédé selon une ou plusieurs des revendications 1 à 8,
    caractérisé en ce qu'
    on utilise comme composant tensioactif des oxydes d'amines, éventuellement en association avec d'autres tensioactifs non ioniques et/ou anioniques.
  10. Procédé selon une ou plusieurs des revendications 1 à 9,
    caractérisé en ce que
    les diluants sont choisis dans le groupe constitué par l'éthanol, le n- ou isopropanol, les butanols, le glycol, le propane- ou butanediol, le glycérol, le diglycol, le propyl- ou butyldiglycol, l'éther méthylique d'éthylèneglycol, l'éther éthylique d'éthylèneglycol, l'éther propylique d'éthylèneglycol, l'éther mono-n-butylique d'éthylèneglycol, l'éther méthylique de diéthylèneglycol, l'éther éthylique de diéthylèneglycol, l'éther méthylique, éthylique ou propylique de propylèneglycol, l'éther méthylique ou éthylique de dipropylèneglycol, le méthoxy-, éthoxy- ou butoxytriglycol, le 1-butoxyéthoxy-2-propanol, le 3-méthyl-3-méthoxybutanol, l'éther tert-butylique de propylèneglycol et la mono-, di-, ou triéthanolamine, ainsi que des mélanges de ces solvants.
  11. Procédé selon une ou plusieurs des revendications 1 à 10,
    caractérisé en ce que
    les concentrés de produits de nettoyage contiennent comme autres adjuvants ou substances actives d'autres alcalis, des complexants chélateurs, des substances de type adjuvant actif de détergence, d'autres tensioactifs anioniques et/ou non ioniques, des enzymes, des conservateurs, des séquestrants, des oxydants, des colorants et/ou des parfums.
EP97945841A 1996-10-24 1997-10-15 Nettoyage de conduites et de recipients dans l'industrie alimentaire Expired - Lifetime EP0937133B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19643552A DE19643552A1 (de) 1996-10-24 1996-10-24 Reinigung von Rohrleitungen und Behältern in der Lebensmittelindustrie
DE19643552 1996-10-24
PCT/EP1997/005691 WO1998017776A2 (fr) 1996-10-24 1997-10-15 Nettoyage de conduites et de recipients dans l'industrie alimentaire

Publications (2)

Publication Number Publication Date
EP0937133A2 EP0937133A2 (fr) 1999-08-25
EP0937133B1 true EP0937133B1 (fr) 2003-03-05

Family

ID=7809437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945841A Expired - Lifetime EP0937133B1 (fr) 1996-10-24 1997-10-15 Nettoyage de conduites et de recipients dans l'industrie alimentaire

Country Status (4)

Country Link
EP (1) EP0937133B1 (fr)
AU (1) AU5119698A (fr)
DE (2) DE19643552A1 (fr)
WO (1) WO1998017776A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731398A1 (de) 1997-07-22 1999-01-28 Henkel Ecolab Gmbh & Co Ohg Verwendung enzymhaltiger Lösungen zum Reinigen von Gär- und Lagertanks
DE10222127C1 (de) * 2002-05-17 2003-12-18 Dienst Sondermaschinen Gmbh Rohrreinigungssystem
EP1707619B1 (fr) 2003-07-14 2009-11-18 Kao Corporation Composition nettoyante pour le nettoyage sur place
US7838485B2 (en) 2007-03-08 2010-11-23 American Sterilizer Company Biodegradable alkaline disinfectant cleaner with analyzable surfactant
DE102007022798A1 (de) † 2007-05-11 2008-11-13 Sig Technology Ag Verfahren und Vorrichtung zum gleichzeitigen Reinigen mehrerer Rohrleitungen oder Rohrleitungssysteme
DE102015209354A1 (de) * 2015-05-21 2016-05-19 Jürgen Löhrke GmbH Cleaning-in-place-Verfahren
CN114854506B (zh) * 2021-01-20 2024-03-15 内蒙古大学 一种绿色复合cip清洗剂及其制备方法和使用方法
CN113637529B (zh) * 2021-07-05 2023-09-01 安徽海顺化工有限公司 一种洗涤装置及使用方法
WO2023197233A1 (fr) * 2022-04-14 2023-10-19 Ecolab Usa Inc. Solution chimio-mécanique de nettoyage de réservoirs et de conduites fluidiques
CN115710535A (zh) * 2022-11-28 2023-02-24 广东红日星实业有限公司 一种清洁剂及其制备方法和应用

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1151501A (fr) * 1981-03-24 1983-08-09 Gilles M. Tastayre Gel nettoyant, et methode de fabrication et mode d'emploi
US4935065A (en) * 1986-08-22 1990-06-19 Ecolab Inc. Phosphate-free alkaline detergent for cleaning-in-place of food processing equipment
DE3635357A1 (de) * 1986-10-17 1988-04-21 Veit Wellhoener Verfahren zur reinigung und keimreduzierung in der getraenkeindustrie
EP0314232A3 (fr) * 1987-10-27 1990-07-04 Unilever N.V. Gels épaississants
GB9302855D0 (en) * 1993-02-12 1993-03-31 Laporte Esd Ltd Cleaning composition
DE19504192A1 (de) * 1995-02-09 1996-08-14 Henkel Ecolab Gmbh & Co Ohg Verdickende wäßrige Reinigungsmittel für harte Oberflächen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GRASSHOFF, A.: "METHODEN DER REINIGUNG IN MILCHWIRTSCHAFTLICHEN BETRIEBEN", SÖWF, vol. 124, 1998, pages 1037 - 1043 *
HIELSCHER,C: "REINIGUNG UND STERILISATION VON ANLAGEN UND GERÄTEN", SÖFW, vol. 116, September 1990 (1990-09-01), pages 611 - 616 *
HYDE,J.: "NEW DEVELOPMENTS IN CIP PRACTICES", CHEM. ENG. PROG., vol. 81, 1985, pages 39 - 41 *

Also Published As

Publication number Publication date
EP0937133A2 (fr) 1999-08-25
DE59709454D1 (de) 2003-04-10
DE19643552A1 (de) 1998-04-30
WO1998017776A3 (fr) 1999-01-21
WO1998017776A2 (fr) 1998-04-30
AU5119698A (en) 1998-05-15

Similar Documents

Publication Publication Date Title
US11834624B2 (en) Alkyl amides for enhanced food soil removal and asphalt dissolution
EP0808354B1 (fr) Detergents aqueux s'epaississant pour surfaces dures
US4608189A (en) Detergents and liquid cleaners free of inorganic builders
AU675833B2 (en) Concentrated all-purpose light duty liquid cleaning composition and method of use
DE69734427T2 (de) Hydrotrop enthaltende reiniger für harte oberflächen mit verminderter rückstandsbildung
DE60211552T2 (de) Flüssiges geschirrspülmittel enthaltend wasserstoffperoxid
DE19936727A1 (de) Niotensidbasiertes wäßriges mehrphasiges Reinigungsmittel
EP0937133B1 (fr) Nettoyage de conduites et de recipients dans l'industrie alimentaire
EP0966514A1 (fr) Agents de blanchiment aqueux
EP0928829B1 (fr) Nettoyage de surfaces dures à l'aide d'agents rhéopexiques en milieu aqueux
EP0998549B1 (fr) Utilisation de solutions contenant des enzymes pour nettoyer des cuves de fermentation ou de stockage
DE19945506A1 (de) Antimikrobielles wäßriges mehrphasiges Reinigungsmittel
US20170369817A1 (en) Hard surface cleaning compositions
DE3512535A1 (de) Verfahren zum manuellen reinigen von gegenstaenden mit harten oberflaechen
EP0944712B1 (fr) Produits de nettoyage
WO1998017774A1 (fr) Nettoyage de surfaces dures avec des nettoyants aqueux rheopexiques
CH635614A5 (en) Liquid detergent and process for its preparation
EP1483361B1 (fr) Solutions de peroxyde epaissies
DE60210336T2 (de) Schonende reinigungsflüssigkeiten mit konservierungssystem
DE10063427A1 (de) Antibakterielles Reinigungsmittel
DE10037405A1 (de) Reinigung harter Oberflächen mit verdickenden wäßrigen Reinigungsmitteln
DE2711434A1 (de) Fluessiges wasch- und reinigungsmittel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990415

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE DK ES FI FR GB IE IT LI NL SE

Kind code of ref document: A2

Designated state(s): DE FR GB IT NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ECOLAB GMBH & CO. OHG

17Q First examination report despatched

Effective date: 20020506

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RBV Designated contracting states (corrected)

Designated state(s): BE CH DE DK ES FR GB IT LI NL

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT NL

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59709454

Country of ref document: DE

Date of ref document: 20030410

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 0937133E

Country of ref document: IE

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ECOLAB INC.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: ECOLAB INC.

26N No opposition filed

Effective date: 20031208

NLS Nl: assignments of ep-patents

Owner name: ECOLAB INC.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050914

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20050916

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20051006

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20051031

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061031

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070501

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070501

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20061015

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20070501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071015