[go: up one dir, main page]

EP1389229B1 - Verfahren zum entfernen von kohlenwasserstoffhaltigen verunreinigungen von oberflächen - Google Patents

Verfahren zum entfernen von kohlenwasserstoffhaltigen verunreinigungen von oberflächen Download PDF

Info

Publication number
EP1389229B1
EP1389229B1 EP01274223A EP01274223A EP1389229B1 EP 1389229 B1 EP1389229 B1 EP 1389229B1 EP 01274223 A EP01274223 A EP 01274223A EP 01274223 A EP01274223 A EP 01274223A EP 1389229 B1 EP1389229 B1 EP 1389229B1
Authority
EP
European Patent Office
Prior art keywords
washing
cleaning
detergent
emulsion
aqueous
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
EP01274223A
Other languages
English (en)
French (fr)
Other versions
EP1389229A1 (de
Inventor
Aleksandr Aleksandrovich Evdokimov
Aleksei Viktorovich Zhuravlev
Vladimir Mihailovich Smolyanov
Dmitry Vyacheslavovich Novoseltsev
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.)
Obschestvo S Ogranichennoi Otvetstvennostju "Chistye Tekhnologii"
Original Assignee
Obschestvo S Ogranichennoi Otvetstvennostju "Chistye Tekhnologii"
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 Obschestvo S Ogranichennoi Otvetstvennostju "Chistye Tekhnologii" filed Critical Obschestvo S Ogranichennoi Otvetstvennostju "Chistye Tekhnologii"
Publication of EP1389229A1 publication Critical patent/EP1389229A1/de
Application granted granted Critical
Publication of EP1389229B1 publication Critical patent/EP1389229B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B08B3/02—Cleaning by the force of jets or sprays
    • 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
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • 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
    • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/007—Heating the liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0217—Use of a detergent in high pressure cleaners; arrangements for supplying the same
    • 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 relates to methods of removal of hydrocarbon impurities such as crude oil, petroleum products, lubricating agents, fats of technical and household grades and oils and can be applied in different fields of industry for chemical- and mechanized washing and cleaning of process and transportation means.
  • Some methods and compositions as well as various solvents are known and widely used in industry, to clean metal surfaces of oil-, mud-, crude oil- and asphalt- and pitchy impurities.
  • universal solvents are used which can dissolve various substances contained in such impurities as aceton, kerosene, whitespirit and so on (B.G. Petrik, P.V.Choulkov and S.I. Kalashnikov "Handbook: Solvents and compositions for cleaning machines and mechanisms", Moscow, “Khimia”, 1989).
  • Main operations included in these methods are washing of surfaces to be treated, pumping-off of formed emulsion of solvent and liquid hydrocarbons and its removal followed by discharging into treatment facilities.
  • the above-mentioned method ensures the required level of surface cleaning and the possibility to repeatedly use washing solutions, still the technological process is complicated owing to the formation of stable emulsion which needs either long-time settling or the additional separation by any other method.
  • the method is known of hydrocarbon impurities removal from surfaces, particularly of oil-and fat contaminants (RU, No 2019318) with the use of two liquids. Washing of an article surface in conformity with this method is performed with washing solution, but impurities are removed from the washing solution with the help of auxiliary liquid which does not form stable emulsion with washing solution and additionally can selectively recover oil-and fat contaminants from it. When the washing procedure is over the auxiliary liquid is regenerated particularly by distillation and returned into the washing cycle.
  • the method described in RU, No 2135304 is the closest to the one offered. Its essence consists in the following: a surface contaminated with various hydrocarbon impurities is washed with detergent aqueous solution capable of emulsifying hydrocarbon impurities. The washing solution is then regenerated with the help of the emulsion phase separation followed by the organic phase separation and the water phase returning to the cleaning cycle.
  • the "UBON” technical detergent (RU, No 2101337) or "BOK” detergent (RU, No 2132367) are used as washing solutions forming non-stable emulsions with hydrocarbon impurities.
  • the above-mentioned "UBON” detergent has the following composition, % ww: sodium salt of polyacrylic acid modified by ether groups - 0.1 - 10; electrolyte - 0.5 - 40; water - up to 100.
  • the "BOK” detergent has the following composition, % ww: nonionic surfactant - 0.2 - 14; polyelectrolyte - 2.5 - 5.5; an active additive - the rest.
  • Acrylic acid polymers are used as polyelectrolyte in the said compound, e.g. sodium salt of carboxymethyl cellulose (Na-CMC) and sodium carbonate or sodium carbonate combined with sodium carbamide and / or metasilicate as an active additive.
  • Neonol or synthanol are used as nonionic surfactants in the said detergent composition.
  • the emulsion phase separation is performed in a separation vessel and the water phase to be returned into the washing cycle is passed through an intermediate reservoir. Water phase is taken from the bottom part of the separation vessel and supplied to the cleaning cycle from the bottom part of the intermediate reservoir. During the process of the emulsion phase separation a volume ratio of organic impurities and washing solution is provided for not less than 1 : 2.
  • the said method ensures the required level of surface cleaning and the possibility to repeatedly use washing solution, still a desired result is achieved by the flow sheet complication as separate stages of the process take place in intermediate vessels but the provision for a volume ratio of impurities and washing solution requires the evaluation of a volume of impurities to be removed before the beginning of a surface cleaning process. Such an evaluation is rather difficult to be done accurately.
  • Polyelectrolytes tend to form polymer-colloid complexes what can cause the reduction of organic compound recovery and washing solution purification level.
  • the technical object of the supposed invention is the simplification of the technological process of cleaning, the increase of hydrocarbon impurities recovery during the washing solution regeneration and the reduction of power consumption for the cleaning process.
  • the technical object is achieved owing to the fact that some changes and modifications have been introduced into the known closed-cycle method of hydrocarbon impurities removal from surfaces which includes the preparation of detergent aqueous solution containing nonionic surfactant and an active component, surface washing-off with detergent aqueous solution, pumping-off of the obtained emulsion, separating of the emulsion into aqueous and organic phases followed by the return of the aqueous phase into the cleaning cycle and the periodical discharging of the organic phase to a storage tank.
  • nonionic surfactant based on fatty alcohol alcoxylate in quantity 2 - 4 % ww and an active component in quantity up to 100 %.
  • the separation of emulsion to be pumped-off into water- and organic phases is carried out by passing it through a self-cleaning thin-layer settler (separator).
  • fatty alcohol alcoxylate is played by oxyethylated polyoxypropylene glycol derivatives of ethylene diamide or oxyethylated polypropylene ethylene diamine known under trademarks "Akatronic EDP, EGE, PGP" and others possessing a number of useful properties including emulsifying and thickening characteristics.
  • soda ash is used or a compound with a partial soda ash replacement by phosphoric acid sodium salts, the component weight ratio being equal to 1.9 - 2.3 : 1.
  • tripolyphosphate or trisodiumphosphate or their mixture are used as phosphoric acid sodium salts.
  • aqueous washing solution is used with a fluctuating content of detergent, i.e. from 1.5 to 4.0 % ww; washing solution temperature is selected within the limits of 40 - 55°C.
  • Fig. 1 represents a flow diagram of hydrocarbon impurities removal from a surface using the example of a railway tank cleaning.
  • the method of hydrocarbon impurities removal from a surface includes the following sequence of operations:
  • composition of a detergent to be prepared is determined proceeding from a number of factors, i.e. impurity composition, material from which a tank or other vessel are made, impurity age and so on.
  • nonionic surfactant based on fatty alcohol alcoxylate as nonionic hydrophilic surfactant is substantiated with the fact that it is well dissolved in water and distinguished with low foam formation in neutral and alkaline media. Besides, it possesses high surface- and interphase activity in an alkaline medium and good wetting properties on a polar and a hard surface and has emulsifying and thickening characteristics as well.
  • Soda ash is most often used as an active component as it is the cheapest and widespread detergent though its efficiency is somewhat less than the efficiency of more expensive detergents, e.g. tripolyphosphate and trisodiumphosphate. Still, in those cases when hydrocarbon impurities, especially inveterate ones have very complex composition or a surface is very contaminated, a more efficient detergent is worth while to be used. Such a necessity may arise if soda ash or time are deficient and sodium salts of phosphoric acid being available.
  • the range of the admissible concentration of washing solution equal to 1.5 - 4.0 % ww is selected on the basis of the study carried out with the use of washing solutions obtained from the said compositions to remove liquid hydrocarbons from surfaces. It was found that if a tank is made of non-ferrous metal e.g. aluminium it is better to use detergent aqueous solution of 1.5 - 2.5 % concentration, but if a surface is made of steel or cast iron it is better to use detergent aqueous solution of 2.0 - 4 % concentration.
  • washing solution warming up to 40 - 55°C is performed in heat exchanger 5.
  • Concrete temperature is selected proceeding from the detergent composition, solution concentration and optimum cleaning time. At temperatures lower than 40°C the cleaning process time is significantly increased but at temperature higher than 55°C the cleaning process efficiency is reduced as foam formation increases what makes difficult the process equipment operation; nonionic surfactant activity drops. Owing to washing heads of a turbine type an internal surface of a vessel to be cleaned is washed by the spray washing method. To achieve maximum efficiency, washing heads are arranged so that their orientation could be changed if necessary. Average washing time is 8 - 20 minutes.
  • Spent washing solution is with the help of diaphragm pump 6 supplied to the self-cleaning thin-layer settler 7 where liquid phase is separated into washing solution which, while being cleaned, is fed to vessel 3 for the subsequent use, and into lighter phase, i.e. hydrocarbon impurities which are accumulated in the upper zone of separator 7 and as far as they are accumulated they are pumped into storage vessel 8 for decanted product; sludge is accumulated in the lower, stagnant zone of the separator.
  • diaphragm pump 6 supplied to the self-cleaning thin-layer settler 7 where liquid phase is separated into washing solution which, while being cleaned, is fed to vessel 3 for the subsequent use, and into lighter phase, i.e. hydrocarbon impurities which are accumulated in the upper zone of separator 7 and as far as they are accumulated they are pumped into storage vessel 8 for decanted product; sludge is accumulated in the lower, stagnant zone of the separator.
  • the self-cleaning thin-layer settler is a coalescing separator in the casing of which a plane-parallel packing is installed. Self-cleaning of the packing is achieved by the selection of the treatment modes, as well as of appropriate slope of plates which depends upon the composition and properties of the mixture to be separated.
  • a slot gap between plates is provided owing to packings.
  • a mixture to be separated (emulsion) is supplied into the gap through an upper branch pipe and distributed among slot channels which have three areas, i.e. a vertical area where the separation of petroleum product particles takes place at the plate walls; a rotary area where the flow changes its orientation in the gravitational field and an expanding area where the separated organic phase floats up to the upper part of the apparatus and is discharged into the decanted petroleum product tank.
  • Settled sludge is removed through the bottom branch pipe of the self-cleaning thin-layer settler.
  • the self-cleaning thin-layer settler does not require frequent stops and dismantling to clean and regenerate the plane-parallel packing.
  • the above-mentioned settler ensures any slope of plates and does not require repeated agitating of separated phases.
  • washing solution concentration In the course of the repeated use of washing solution its concentration is controlled according to an alkalinity value with the help of hydrochloric acid titration using methyl orange indicator and if necessary it is adjusted by adding water and detergent into vessel 3.
  • the dependence of washing solution total alkalinity upon its concentration is shown in Table 1.
  • Washing solution concentration, % ww Solution density at 20°C, g/cm 3 Total alkalinity of washing solution, % 1.5 1.012 1.3 2.0 1.018 1.6 2.5 1.024 2.0 3.0 1.029 2.6 3.5 1.034 3.1 4.0 1.0385 3.7
  • the solution adjustment is carried out in 6 - 8 cycles of the cleaning process by adding freshly-prepared washing solution in a quantity sufficient to bring the total concentration of the solution to a predetermined value.
  • Example 1 Washing of a steel tank, 63 m 3 , was performed with 3.5 % solu-tion of detergent (35 kg of detergent per 1000 liter of water) of the following com-position: 3.0 % ww nonionic surfactant representing oxyethylated polyoxypro-pylene glycol derivative of ethyldiamine (Alcatronic EDP) and 97 % ww soda ash.
  • detergent 35 kg of detergent per 1000 liter of water
  • 3 3.0 % www nonionic surfactant representing oxyethylated polyoxypro-pylene glycol derivative of ethyldiamine (Alcatronic EDP) and 97 % ww soda ash.
  • the said washing solution was from reservoir 3 (Fig. 1) taken for washing from the reservoir bottom flange with the help of ejector pump 4 and supplied to washing heads 2 installed inside the tank, each of the heads having two nozzles. Pressure of washing liquid was 1.5 MPa. Washing solution temperature was controlled with the help of a thermometer and maintained within the range of 45 - 55°C owing to its warming by heater 5. After 10 minutes of spray washing the obtained emulsion representing the mixture of washing solution and liquid hydrocarbons was pumped off with the help of diaphragm pump 6. Contaminated washing solution was supplied to the upper part (a branch pipe) of the self-cleaning thin-layer settler 7.
  • Example 1 approximately 30 liter of water and 800g of detergent were added after eight washing cycles for the adjustment of the concentration predetermined.
  • Example 2 Washing of the similar railway tank was performed, but detergent composition was changed by the partial replacement of soda ash with sodium salt of phosphoric acid.
  • the detergent had the following composition, % ww: nonionic surfactant - 3.0; tripolyphosphate - 30 and soda ash - the rest to 100. Washing solu-tion concentration was 3.5 % as in Example 1. The washing process was carried out similar to one described in Example 1, but time of the tank washing reduced to 7.5 minutes.
  • the level of hydrocarbons recovery from emulsion was 98 %.
  • Example 3 Cleaning of a brass reservoir, 5 m 3 , of machine oil drain residues was performed. 20 kg of detergent having composition corresponding to Example 1 were dissolved in 1000 liter of water at 45°C while permanently agitating. The reser-voir cleaning was performed similarly to one described in Example 1.
  • Washing time was 6 minutes, the level of hydrocarbons recovery was 97.5 %.
  • Example 4 Cleaning of a reservoir similar to one represented in Example 3 was performed but the detergent had the following composition, % ww: nonionic surfac-tant based on oxyethylated polypropylene ethylene diamine as fatty alcohol alcoxy-late - 3.0; trisodiumphosphate - 20.0; tripolyphosphate - 12.0 and the rest was soda ash - to 100. Concentration of the said detergent aqueous solution was 2 % as in Example 3.
  • Washing time was 5 minutes, the level of hydrocarbons recovery (machine oil) was 98.5 %.
  • Table 2 gives data concerning cleaning reservoirs for petroleum product storage and Table 3 gives data concerning cleaning vertical cylindrical reservoirs of different volumes installed under a panel roof. Washing solutions containing 3 - 4 % of detergents were used. different volumes installed under a panel roof. Washing solutions containing 3 - 4 % of detergents were used.
  • the method may be used in various branches of industry particularly in shipbuilding, transport, petroleum producing- and refining industry where the necessity exists to wash storage vessels and transport liquid hydrocarbons.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (3)

  1. Die Methode, die auf dem geschlossenen Kreislauf fundiert ist, für die Entfernung der Kohlenwasserstoffbeimischungen von den Oberflächen, einschließlich die Vorbereitung der Reinigerswasserlösung, die den nichtionogenen Oberflächenaktivstoff und die aktive Komponente enthält, das Abwaschen der Oberflächenschicht mit Hilfe von der Reinigerswasserlösung, Abpumpen der resultierenden Emulsion, die Separation der Emulsion in die wäßrige und organische Phasen mit der nachfolgenden Rücklauf der wäßrigen Phase in den Reinigungszyklus und die periodische Eingabe der organischen Phase in den Behälter, in dem als nichtionogener Oberflächenaktivstoff ein nichtionogener Oberflächenaktivstoff auf der Basis der Fettalkoholalcoxylate verwendet wird, zum Beispiel, hydroxiäthylierte Polypropylenoxidableitungen von Äthylendiamid in Höhe von 2.0 - 4.0 % ww, und die Bilanz bis zu 100 % ww wird auf Kosten von der aktiven Komponente und der Separation der Emulsion für Abpumpen in die wäßrige und organische Phasen erreicht, was mittels des Durchlaufes der Emulsion durch den selbstreinigenden Dünnschichtseparator erfolgt.
  2. Die Methode, die im Punkt 1 erklärt ist, wo als aktiver Reinigungsmittel kalzinierte Soda oder die Mischung mit dem Gehalt von Soda und Natriumsalz der Orthophosphorsäure verwendet wird, zum Beispiel, wird Natriumtripolyphosphat und/oder Natriumtriphosphat verwendet, wo Gewichtskoeffizient der Komponente - (1.9 - 2.3): 1.
  3. Die Methode, die in einem der Punkte 1 oder 2 erklärt ist, wo die Reinigerswasserlösung für die Reinigung verwendet wird, die Konzetration des Reinigers ist im Bereich 1.5 - 4 % ww, und die Temperatur ist im Bereich 40-55°C.
EP01274223A 2001-04-23 2001-11-08 Verfahren zum entfernen von kohlenwasserstoffhaltigen verunreinigungen von oberflächen Expired - Lifetime EP1389229B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2001111205/12A RU2200637C2 (ru) 2001-04-23 2001-04-23 Способ очистки поверхности от углеводородных загрязнений
RU2001111205 2001-04-23
PCT/RU2001/000468 WO2002090482A1 (en) 2001-04-23 2001-11-08 Method of hydrocarbon impurities removal from surfaces

Publications (2)

Publication Number Publication Date
EP1389229A1 EP1389229A1 (de) 2004-02-18
EP1389229B1 true EP1389229B1 (de) 2005-10-26

Family

ID=20248896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01274223A Expired - Lifetime EP1389229B1 (de) 2001-04-23 2001-11-08 Verfahren zum entfernen von kohlenwasserstoffhaltigen verunreinigungen von oberflächen

Country Status (4)

Country Link
EP (1) EP1389229B1 (de)
DE (1) DE60114471T2 (de)
RU (1) RU2200637C2 (de)
WO (1) WO2002090482A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2761208C1 (ru) * 2021-04-19 2021-12-06 Рякин Сергей Юрьевич Способ очистки емкостей от остатков нефтепродуктов и их утилизации в качестве горючей смеси, направляемой для сжигания

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2357811C1 (ru) * 2007-09-13 2009-06-10 Общество с ограниченной ответственностью ООО Компания "Чистые технологии" Способ очистки внутренней поверхности цистерн от остатков органических продуктов и моющее средство, используемое в способе
RU2429085C1 (ru) * 2010-03-01 2011-09-20 Илшат Минуллович Валиуллин Способ очистки поверхности от углеводородных соединений
US11053813B2 (en) 2017-04-18 2021-07-06 General Electric Company Turbine component cleaning system and method having detergent recovery and regeneration
US11028727B2 (en) 2017-10-06 2021-06-08 General Electric Company Foaming nozzle of a cleaning system for turbine engines
CN110394340A (zh) * 2019-07-29 2019-11-01 河北冠能石油机械制造有限公司 洗罐设备及系统
US12031501B2 (en) 2019-11-27 2024-07-09 General Electric Company Cooling system for an engine assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002472C2 (de) * 1980-01-24 1982-03-04 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Verfahren und Vorrichtung zum Reinigen von alkalimetall-benetzten Werkstücken
RU2032443C1 (ru) * 1990-04-24 1995-04-10 Евдокимов Александр Александрович Устройство для очистки жиросодержащих сточных вод
US5609693A (en) * 1993-11-17 1997-03-11 Dober Chemical Corp. Methods for removing acrylic-based polymer coatings
DE19519176A1 (de) * 1995-05-24 1996-11-28 Guenter Klockner Verfahren und Vorrichtung zum Reinigen von mit eingebrannten organischen Rückständen verschmutzten Metallteilen
CA2278788A1 (en) * 1997-12-04 1999-06-10 Tomah Products, Inc. Method for cleaning hydrocarbon-containing soils from surfaces
RU2135304C1 (ru) * 1998-11-13 1999-08-27 Минаков Валерий Владимирович Способ очистки поверхности от углеводородных загрязнений

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2761208C1 (ru) * 2021-04-19 2021-12-06 Рякин Сергей Юрьевич Способ очистки емкостей от остатков нефтепродуктов и их утилизации в качестве горючей смеси, направляемой для сжигания

Also Published As

Publication number Publication date
DE60114471T2 (de) 2006-07-20
EP1389229A1 (de) 2004-02-18
DE60114471D1 (de) 2005-12-01
RU2200637C2 (ru) 2003-03-20
WO2002090482A1 (en) 2002-11-14

Similar Documents

Publication Publication Date Title
US6783582B2 (en) System for treating petroleum and petrochemical slop oil and sludge wastes
US3037887A (en) Foam cleaning of surfaces
US5540784A (en) Pressurized closed flow cleaning system
US6858090B2 (en) Closed loop cleaning system
CN101473068B (zh) 用于破乳化清洗金属表面的方法
CA1282666C (en) Demulsifying cleaning preparation having a prolonged surface-wetting effect
US3025190A (en) Method of, and compositions for use in, cleansing the interior surfaces of tanks and the like
EP1389229B1 (de) Verfahren zum entfernen von kohlenwasserstoffhaltigen verunreinigungen von oberflächen
KR20200090795A (ko) 부품 세척 방법
US20250002817A1 (en) Solvent Composition and Process for Cleaning Contaminated Industrial Equipment
US4477286A (en) Breaking oil-in-water emulsions
RU2135304C1 (ru) Способ очистки поверхности от углеводородных загрязнений
RU2262396C1 (ru) Способ очистки поверхности от углеводородных загрязнений
US2952571A (en) Cleaning oily hard surfaces
RU2165318C1 (ru) Способ очистки поверхностей от жидких углеводородов
RU2170630C1 (ru) Способ очистки твердой поверхности и моющая композиция, предназначенная для использования в способе
WO2010073062A1 (en) Method of oil residue utilisation and chemical agent thereof
JP2001170580A (ja) 炭化水素油処理装置の洗浄方法
JP2001170590A (ja) 炭化水素油処理装置の洗浄方法
RU2801940C2 (ru) Способ очистки нефтепромыслового оборудования, емкостей для хранения, железнодорожных и автомобильных цистерн и нефтеналивных судов от отложений
RU2794178C1 (ru) Состав для очистки нефтепромыслового оборудования, емкостей для хранения, железнодорожных и автомобильных цистерн и нефтеналивных судов от отложений
RU2851679C2 (ru) Растворитель нефти и нефтепродуктов
Minakov New Technologies for Cleaning Up Oil Spills.
RU2745596C2 (ru) Способ подготовки технологического оборудования к безопасному вскрытию
RU2010628C1 (ru) Способ мойки изделий

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: 20031027

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RBV Designated contracting states (corrected)

Designated state(s): DE FI GB IT NL

17Q First examination report despatched

Effective date: 20040914

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FI GB IT NL

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051026

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60114471

Country of ref document: DE

Date of ref document: 20051201

Kind code of ref document: P

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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

26N No opposition filed

Effective date: 20060727

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

Ref country code: DE

Payment date: 20101126

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20101130

Year of fee payment: 10

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

Effective date: 20111108

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60114471

Country of ref document: DE

Effective date: 20120601

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: 20111108

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

Ref country code: DE

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

Effective date: 20120601