EP0937133A2 - Nettoyage de conduites et de recipients dans l'industrie alimentaire - Google Patents

Nettoyage de conduites et de recipients dans l'industrie alimentaire

Info

Publication number
EP0937133A2
EP0937133A2 EP97945841A EP97945841A EP0937133A2 EP 0937133 A2 EP0937133 A2 EP 0937133A2 EP 97945841 A EP97945841 A EP 97945841A EP 97945841 A EP97945841 A EP 97945841A EP 0937133 A2 EP0937133 A2 EP 0937133A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
water
containers
ether
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.)
Granted
Application number
EP97945841A
Other languages
German (de)
English (en)
Other versions
EP0937133B1 (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
Henkel Ecolab GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecolab GmbH and Co OHG, Henkel Ecolab GmbH and Co KG 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 industrial sector, for example pipeline and / or container cleaning in the food and beverage industry, in breweries, dairy farms, etc. It relates to the use of known cleaning agents 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 sewer system as Rinse water used fresh 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 can be heated so that they can be hot cleaned.
  • the process described above is referred to as “stacked” CIP cleaning or “stack cleaning”, since here the solutions — if necessary after cleaning by membrane filtration — are “stacked” for reuse in the CIP tanks.
  • the basic component of the cleaning agent used mostly sodium hydroxide or, in the case of acidic cleaners, a mineral acid such as phosphoric, sulfuric or nitric acid
  • concentration which can be measured via the conductivity, to the total concentration of the product. This is usually also practicable, but it does not exclude with certainty that individual ingredients of modern, complex detergents are consumed more or less than the basic component. In some cases, this uncertainty cannot be tolerated and an extensive separate determination of certain individual components must be carried out (e.g. hypochlorite, peroxides, etc.).
  • a "stacked" CIP cleaning requires a high level of technical equipment for stacking tanks, supply lines, discharge lines, pumps, valves, etc. -
  • the entire cleaning agent must be heated, which cools down again in the pipes and tanks and must be brought back to the desired operating temperature after the circulation. In this way, the entire system to be cleaned, with the supply and discharge lines, is brought to the desired cleaning temperature with a high expenditure of energy.
  • the invention has for its object to provide an improved method for cleaning pipelines and containers in the food industry.
  • the disadvantages of the "lost" CIP cleaning are to be avoided and thus an equal or better cleaning success is achieved with less use of water and cleaning agents, lower energy costs and shorter cleaning and downtime.
  • This object is achieved according to the invention by applying a cleaning agent in the form of an aqueous solution with water-thickenable cleaner concentrates to the inner surfaces to be cleaned and rinsing with water after an exposure time of 1 to 60 minutes.
  • Cleaning agent or cleaning solution is understood here to mean the solution diluted to the application concentration with water, while cleaning agent or cleaner concentrate means the undiluted, low-viscosity solution of the ingredients.
  • these concentrates are diluted with water to an application concentration of 0.2 to 10% by weight, preferably 0.5 to 2% by weight, that is to say by a factor between 10 and 500, preferably between 50 and 200, diluted.
  • Such water-thickenable cleaner concentrates for cleaning hard surfaces (COP cleaning) in the food industry are known in the prior art and are widely described. Due to their adhesive properties and / or their foaming power, the use of these cleaners has so far been restricted to COP cleaning or the cleaning of open sanitary objects such as toilet bowls or bathtubs, since cleaning closed systems has disadvantages in terms of cleaning performance and / or rinsability of the foam were feared.
  • these water-thickenable cleaner concentrates can also be used for CIP cleaning, the use of film-forming cleaners, gel cleaners and rheopexic cleaners being preferred.
  • EP-B-265 979 discloses thickening premixes for the production of thickened aqueous single-phase cleaning agents which consist of 0.1 to 10% by weight of a surfactant, which can be, for example, a tertiary amine oxide, and 0.01 to 3 % By weight of an organic anionic sulfonate exist.
  • a surfactant which can be, for example, a tertiary amine oxide, and 0.01 to 3 %
  • an organic anionic sulfonate exist.
  • EP-A-276 501 (Akzo) are thickened, aqueous cleaning agents with thixotropic behavior which contain a primary, secondary or tertiary amine or diamine with at least one hydrocarbon radical consisting of at least 10 carbon atoms, and an organic sulfonate and a weak one Contain acid with a pK value less than 2.0.
  • Other documents dealing with thickening detergent concentrates are, 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 46 04 636 (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 polyhydric alcohols, the glycol ether and the alkanolamines. This document does not disclose the use for inner surfaces of pipelines or containers.
  • WO95 / 02664 (Jeyes Group PLC) also describes cleaners which can be thickened by the addition of water and which either require ether sulfates, optionally in conjunction with further surface-active substances, or cationic surfactants, optionally together with nonionic surfactants.
  • ether sulfates optionally in conjunction with further surface-active substances
  • cationic surfactants optionally together with nonionic surfactants.
  • only use on hard external surfaces such as toilet bowls, walls or floors is described.
  • EP-A-0 595 590 (Page, White & Fairer) discloses a chlorine-free, low-alkaline cleaning concentrate which contains amine oxides, anionic surfactants, a hydrophobically modified polymer, a thinner and alkalis and forms a gel film on hard surfaces.
  • EP-A-0 314 232 (Unilever) describes water-thickenable cleaning agent concentrates which comprise a surfactant from the group of the amines, amine oxides and quaternary ammonium salts, a cosurfactant, ionizable compounds as well as water. These cleaners are also used for hard surfaces.
  • Cleaner concentrates which can be thickened with water accordingly contain surfactant components, anionic surfactants, cationic surfactants and nonionic surfactants as well as possibly amphoteric surfactants being used, diluents, acidic or alkaline constituents, builders and cobuilders, for example polymers and other active substances and auxiliaries.
  • the cleaner concentrate can contain further components, for example additional alkalis, chelate complexing 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, alkyl benzene sulfonates (ABS), ⁇ -sulfo fatty acid esters (ester sulfonates), short and long chain glycerol esters, fatty alcohol sulfates (FAS), alkyl sulfosuccinic acid (ASB) and soaps.
  • anionic surfactants from the groups mentioned above are the commercially available Eltesol SX30 (sodium xylene sulfonate, commercial product from Albright & Wilson), Triton H55 (potassium phosphate ester, Hendels product from Union Carbide), marlinate DF8 (sodium sulfosuccinate, commercial product from Hüls), Hostapur ® SAS 30X (sodium alkane sulfonate, commercial product from Hoechst), Hostapur OS (sodium olefin sulfonate, commercial product from Hoechst), Petronat ® SX30 (sodium xylene sulfonate, commercial product from Albright & Wilson), Triton H55 (potassium phosphate ester, Hendels product from Union Carbide), marlinate DF8 (sodium sulfosuccinate, commercial product from Hggs), Hostapur ® SAS 30X (sodium alkane
  • Cationic surfactants which are used in thickening cleaner concentrates, come from the group of the quaternary ammonium salts, the primary, secondary and tertiary amines and their salts as well as the polyamines.
  • 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 ICI) and Symprolan 35 XIO (ethoxylated primary amine with 10 EO, commercial product from ICI).
  • Nonionic surfactants used in water-thickening cleaner concentrates come from the group of amine oxides, glucosides and alkyl polyglucosides (APG), alkoxylated fatty alcohols and their esters, alkoxylated fatty acids and alkylphenols, alkanolamides and their alkoxylation products, sucrose and sugar esters, fatty acid esters and Alkylamines.
  • 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 ® CGI 10 (alkyl glucoside, commercial product from Union Carbide), Glucam E10 (methyl glucoside with 10 EO, commercial product from Amerchol), Crodesta ® SL 40 (sucrose cocoate, commercial product from Croda), Empilan MAA (ethoxylated coconut monoethanolamide, commercial product of Albright & Wilson), Ethomeen C12 (ethoxylated coconut amine commercial product of Akzo) and called Tegosoft ® 16 B (cetyl isooctanoate, a product of Goldschmidt).
  • amphoteric surfactants which are mostly used only in combination with anionic surfactants, are selected from the group of alkyl betaines, alkylaminopropionates, alkyliminodipropionates, alkylglycinates, carboxyglycinates, alkylimidazolines, sulfobetaines, alkylpolyaminocarboxylates and
  • Polyamphocarboxyglycinates Polyamphocarboxyglycinates.
  • these types of surfactants are Tegobetaine ® A4080 (alkyldimethylbetaine, commercial product from Goldschmidt), Ampholak ® XCU (coconut amphoglycolate, commercial product from Bero Nobel), amphoteric surfactant CT ® (alkylimidazoline-based amphoteric surfactant, commercial product from Zschimmer and Black), Ampholak ® XCO 30 (coconut amphocarboxyglycinate, commercial product from Bero Nobel) and Sandobet ® SC (coconut amide sulfobetaine, commercial product from Sandoz).
  • Tegobetaine ® A4080 alkyldimethylbetaine, commercial product from Goldschmidt
  • Ampholak ® XCU coconut amphoglycolate, commercial product from Bero Nobel
  • amphoteric surfactant CT ® alkylimidazoline-based
  • Suitable diluents are generally monohydric or polyhydric alcohols, alkanolamines or glycol ethers, provided that they are miscible with water in the concentration range indicated.
  • the solubilizer (s) are preferably 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,
  • Known builders which 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.
  • sodium or potassium carbonate and sodium or potassium silicates can be considered as additional alkalis.
  • Suitable chelating agents are, for example, the alkali salts of
  • Ethylenediaminetetraacetic acid or nitrilotriacetic acid (NTA) as well as alkali metal salts of anionic polyelectrolytes such as polyacrylates, polymaleates and polysulfonates.
  • Low molecular weight hydroxycarboxylic acids such as citric acid, tartaric acid, malic acid or gluconic acid are also suitable.
  • Suitable complexing agents can also be 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).
  • 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 process according to the invention now has the advantage over the conventional “lost” CIP processes that pipes and containers do not have to be permanently rinsed, but rather “pulsating” cleaning can take place from wetting and exposure time. Due to the detergent adhering to the inner walls or slowly running down, vertical flows also occur in the pipes, which improve cleaning success. In containers, the cleaning agent film or foam runs more slowly from the surface than the solution in the conventional CIP process, so that different shear loads act on the dirty wall during the wetting and action phases, which also improves cleaning success.
  • rheopexes that is to say viscosity which increases in viscosity under shear stress
  • the Advantages of this method according to the invention are that the application of the rheopexic cleaning solution by the action of shear forces during application leads to a stable foam or film which slowly liquefies. In this way, on the one hand, the exposure time to the surfaces to be cleaned is increased compared to a coarse-pored foam, on the other hand, a mechanical cleaning effect that does not have the known film-forming cleaners also occurs when it runs off.
  • a fine-pored foam is formed that does not run together as quickly as conventional, coarser foams. Due to the slow drainage of the foam from the surface, soiled areas are wetted with fresh cleaning solution running on, and in addition to the mechanical action, the high cleaning power of the fresh cleaning solution acts on the dirt. After an exposure time which, depending on the concentration of the thickened aqueous solution, is between 1 and 60, preferably between 5 and 30 minutes, the cleaned surface can be rinsed off. The cleaning solution can then be rinsed off with cold water, the extremely fine-pored foam running off easily with the rinsing water.
  • a rinsing of the surfaces with hot water which is required in the prior art methods, can be carried out, but is not necessary, since the cleaning solution can be removed easily and without residue with little use of cold water.
  • the combination of dwell time on the surface and mechanical action on the dirt means that pre-cleaning of the surfaces can also be completely eliminated.
  • all known gel or film-forming and rheopexic cleaning agents for hard surfaces in the food industry of the prior art can be used in the process according to the invention.
  • the cleaning agent must be selected with regard to its physical properties, taking into account the desired cleaning temperature. For example, cleaning temperatures between 50 and 70 ° C are preferred in dairies, while cleaning is carried out in breweries between 0 and 10 ° C, especially at fermentation cellar temperature (5 ° C) and in the beverage industry in general Cleaning temperatures between 10 to 90 ° C, preferably between 10 and 70 ° C are used.
  • compositions mentioned below illustrate the different possibilities for producing cleaner concentrates for use in the process according to the invention.
  • the viscosity values depending on the dilution are also given.
  • 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 1 (compositions in% by weight)
  • Triton BG 10 alkyl polyglycoside (70%) trademark of Union Carbide AG 6202: 2-ethylhexylglycoside (65%) trademark of Akzo Edenor Ti05: C 16 _ ⁇ g-fatty acid mixture, trademark of Henkel NaXS: sodium xylene sulfonate NaTS sodium toluene sulfonate
  • 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
  • the Sent table 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.
  • Dequest ® 2000 phosphonate sequestering agent trademark of Monsanto Wardol ® X polyethylene glycol ester / oleic acid, trademark of ICI Trilon A trisodium nitrilitriacetate, trademark of BASF Nansa ® 1042 dodecylbenzenesulfonic acid, trademark of Albright & Wilson IMS ® 99 industrial denatured alcohol from Hardings

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  • 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)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un procédé pour nettoyer des conduites et des récipients dans l'industrie alimentaire, qui se caractérise en ce qu'on applique sur les surfaces intérieures à nettoyer, un nettoyant sous forme de solution aqueuse de nettoyants concentrés épaississant en présence d'eau et que l'on rince avec de l'eau après un temps d'action allant de 1 à 60 minutes.
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
DE19643552 1996-10-24
DE19643552A DE19643552A1 (de) 1996-10-24 1996-10-24 Reinigung von Rohrleitungen und Behältern in der Lebensmittelindustrie
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 true EP0937133A2 (fr) 1999-08-25
EP0937133B1 EP0937133B1 (fr) 2003-03-05

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EP97945841A Expired - Lifetime EP0937133B1 (fr) 1996-10-24 1997-10-15 Nettoyage de conduites et de recipients dans l'industrie alimentaire

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

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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
DE602004024237D1 (de) 2003-07-14 2009-12-31 Kao Corp Cip-reinigungsmittel
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

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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

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See references of WO9817776A3 *

Also Published As

Publication number Publication date
DE19643552A1 (de) 1998-04-30
EP0937133B1 (fr) 2003-03-05
WO1998017776A3 (fr) 1999-01-21
AU5119698A (en) 1998-05-15
WO1998017776A2 (fr) 1998-04-30
DE59709454D1 (de) 2003-04-10

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