EP4179130B1 - Procédés d'élimination de dépôts à partir d'une surface - Google Patents
Procédés d'élimination de dépôts à partir d'une surfaceInfo
- Publication number
- EP4179130B1 EP4179130B1 EP20945151.7A EP20945151A EP4179130B1 EP 4179130 B1 EP4179130 B1 EP 4179130B1 EP 20945151 A EP20945151 A EP 20945151A EP 4179130 B1 EP4179130 B1 EP 4179130B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- precursor mix
- poly
- acid
- minutes
- glycol
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
-
- 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
- B08B3/003—Cleaning involving contact with foam
-
- 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents
- C11D11/04—Special methods for preparing compositions containing mixtures of detergents by chemical means, e.g. by sulfonating in the presence of other compounding ingredients followed by neutralising
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3726—Polyurethanes
-
- 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
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/42—Application of foam or a temporary coating on the surface to be cleaned
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/44—Multi-step processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
Definitions
- the invention relates to the field of removing various types of deposits from a surface, preferably the surface of industrial equipment.
- large shell-and-tube heat exchangers used in the oil refinery usually require disassembly of both ends and internals, removal of the tube bundle, transportation to a cleaning facility for cleaning, reassembly, and leak testing. This process can take days or weeks, depending on several factors like exchanger size and weight, severity of fouling, whether specialty equipment is required to extract the tube bundle etc.
- a method of removing deposits from a surface according to the state of the art is disclosed in RU 2696990 C2 .
- FIG. 1 illustrates the structure of a shell-and-tube heat exchanger.
- the disclosure relates to a method of removing various types of deposits from a surface.
- the deposits can be salt deposits, deposits of a petroleum nature including fouling of heat exchangers, asphaltene-resin-paraffin, and resin and biological (bacterial) deposits.
- the deposit is the fouling in a heat exchanger.
- the deposit is the fouling in a heat exchanger used in oil refinery.
- the surface is the surface of a heat exchanger.
- the surface is the internal surface of shell-and-tube heat exchanger ( FIG. 1 ).
- Heat exchanger fouling is a common problem in heat exchangers. It results in changing the surface of the heat transfer and reducing the efficiency of the heat transfer.
- Corrosion fouling occurs when the fluid corrodes the surface of the exchanger wall, developing a layer of corrosion. This corroded metal prevents efficient heat transfer.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Combustion & Propulsion (AREA)
- Polyurethanes Or Polyureas (AREA)
Claims (15)
- Procédé d'élimination des dépôts sur une surface comprenant les étapes de :application d'un premier mélange précurseur sur la surface ;passage du premier mélange précurseur à travers les dépôts ;retrait du premier mélange précurseur ;application d'un deuxième mélange précurseur sur la surface ;passage du deuxième mélange précurseur à travers les dépôts ;retrait du deuxième mélange précurseur ;le procédé étant caractérisé en ce quele premier mélange précurseur réagit avec le deuxième mélange précurseur pour produire une mousse, et la mousse se dilate à l'intérieur des pores et des fissures des dépôts, et provoque la rupture du dépôt à partir de la surface.
- Procédé selon la revendication 1, dans lequel la mousse est une mousse polymère choisie dans le groupe constitué par les polyéthylènes, les polyuréthanes, les polyesters et acrylonitrile-butadiène-styrène.
- Procédé selon la revendication 1, dans lequel le premier mélange précurseur comprend un polyol.
- Procédé selon la revendication 3, dans lequel le polyol est un polyester préparé à partir d'un acide choisi dans le groupe constitué par l'acide succinique, l'acide glutanique, l'acide adipique, l'acide subérique, l'acide azélaïque, l'acide sébacique, l'acide phtalique, l'acide isophtalique, l'acide dodécanedicarboxylique et des mélanges de ceux-ci.
- Procédé selon la revendication 3, dans lequel le polyol est un glycol choisi dans le groupe constitué par l'éthylène glycol, le 1,2-propylène glycol, le 1,3-propylène glycol, le 1,3-butylène glycol, le tétraméthylène glycol, le diéthylène glycol, le méthylène glycol, le pentaméthylène glycol, l'hexaméthylène glycol, le xylylène glycol et des mélanges de ceux-ci.
- Procédé selon la revendication 3, dans lequel le polyol est un polyéther choisi dans le groupe constitué par les poly(oxypropylène)glycols, les copolymère poly(oxypropylène)-poly(oxyéthylène) glycols, les poly(oxybutylène)glycols, les poly(oxyéthylène)glycols, les poly(oxytétraméthylène)glycols, les poly(oxypropylène)glycérols, les poly(oxypropylène)triméthylolpropanes, les poly(oxypropylène)-1,2,6-hexanetriols, les poly(oxyde d'éthylène, oxyde de propylène, éthylènediamine)polyéthers, les poly(oxyalkylène)sorbitols, les poly(oxyalkylène)pentaérythritols, le poly(oxyalkylène)saccharose, le poly(oxyalkylène)glucose et des mélanges de ceux-ci.
- Procédé selon la revendication 1, dans lequel le deuxième mélange précurseur comprend un polyisocyanate.
- Procédé selon la revendication 7, dans lequel le polyisocyanate est choisi dans le groupe constitué par les suivants : diisocyanate de 1,4-tétraméthylène, 1,6-diisocyanate d'hexaméthylène, 1,12-diisocyanate de dodécane, 1,3-diisocyanate de cyclobutane, 1,3- et -1,4-diisocyanate de cyclohexane, 1-isocyanato-3,3,5-triméthyl-5-isocyanatométhylcyclohexane (diisocyanate d'isophorone), 2,4- et 2,6-diisocyanate d'hexahydrotoluène, 4,4'-diisocyanate de dicyclohexylméthane (MDI ou HMDI hydrogéné), 1,3- et 1,4-diisocyanate de phénylène, 2,4- et 2,6-diisocyanate de toluène (TDI), 2,4'- et/ou -4,4'-diisocyanate de diphénylméthane (MDI), 1,5-diisocyanate de naphtylène, 4,4',4"-triisocyanate de triphénylméthane, polyphényl-polyméthylène-polyisocyanates (matières premières du MDI), diisocyanates de norbornane, isocyanates de m- et p-isocyanatophénylsulfonyle, arylpolyisocyanates perchlorés, polyisocyanates modifiés, polyisocyanates modifiés par carbodiimide, polyisocyanates modifiés par isocyanurate, polyisocyanates modifiés par l'urée, polyisocyanates contenant du biuret, prépolymères avec des groupes isocyanate terminaux et des mélanges de ceux-ci.
- Procédé selon la revendication 7, dans lequel le polyisocyanate est un diisocyanate de toluène (TDI).
- Procédé selon la revendication 1, dans lequel le premier mélange précurseur comprend en outre un catalyseur.
- Procédé selon la revendication 10, dans lequel le catalyseur est choisi dans le groupe constitué par les suivants : carboxylates d'alkylétain, triéthylènediamine, 1,4-diazabicyclo[2.2.2]octane, diméthylcyclohexylamine (DMCHA), diméthyléthanolamine (DMEA), éther bis-(2-diméthylaminoéthylique), dilaurate de dibutylétain, et des mélanges de ceux-ci.
- Procédé selon la revendication 1, dans lequel le premier mélange précurseur comprend en outre un tensioactif.
- Procédé selon la revendication 12, dans lequel le tensioactif est choisi dans le groupe constitué par les sels métalliques d'acide dialkylsulfosuccinique, les sels organiques d'acide dialkylsulfosuccinique, les sels métalliques d'acide alkylbenzènesulfonique, les sels organiques d'acide alkylbenzènesulfonique, Silwet-L-5130, et des mélanges de ceux-ci.
- Procédé selon la revendication 1, dans lequel le premier mélange précurseur et le deuxième mélange précurseur réagissent pendant une durée suffisante.
- Procédé selon la revendication 14, dans lequel la durée suffisante est choisie dans le groupe constitué par 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes, 70 minutes, 80 minutes, 90 minutes et 100 minutes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2020/000346 WO2022015187A1 (fr) | 2020-07-13 | 2020-07-13 | Procédés d'élimination de dépôts à partir d'une surface |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP4179130A1 EP4179130A1 (fr) | 2023-05-17 |
| EP4179130A4 EP4179130A4 (fr) | 2024-04-24 |
| EP4179130B1 true EP4179130B1 (fr) | 2026-03-04 |
| EP4179130C0 EP4179130C0 (fr) | 2026-03-04 |
Family
ID=79555731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20945151.7A Active EP4179130B1 (fr) | 2020-07-13 | 2020-07-13 | Procédés d'élimination de dépôts à partir d'une surface |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4179130B1 (fr) |
| WO (1) | WO2022015187A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA46747C2 (uk) * | 1996-06-17 | 2002-06-17 | Дзе Бебкок Енд Уілкокс Компані, Корпорація Штату Делавер, Сша | Розчин для очищення об'єктів від уранових сполук і спосіб очистки |
| US6994890B2 (en) * | 2003-10-31 | 2006-02-07 | Resource Development L.L.C. | Cleaning and multifunctional coating composition containing an organosilane quaternary compound and hydrogen peroxide |
| EP2850167B1 (fr) * | 2012-05-14 | 2018-10-31 | Ecolab USA Inc. | Solution de retrait d'étiquette pour des bouteilles de boisson consignées |
| CN119194461A (zh) * | 2016-08-24 | 2024-12-27 | Ppg工业俄亥俄公司 | 用于处理金属基材的碱性组合物 |
| RU2696990C2 (ru) * | 2017-12-26 | 2019-08-08 | Общество с ограниченной ответственностью "АНГАРА ДЕВЕЛОПМЕНТ" (ООО "АНГАРА ДЕВЕЛОПМЕНТ") | Раствор для очистки поверхности от отложений различной природы |
-
2020
- 2020-07-13 WO PCT/RU2020/000346 patent/WO2022015187A1/fr not_active Ceased
- 2020-07-13 EP EP20945151.7A patent/EP4179130B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4179130A4 (fr) | 2024-04-24 |
| EP4179130A1 (fr) | 2023-05-17 |
| WO2022015187A1 (fr) | 2022-01-20 |
| EP4179130C0 (fr) | 2026-03-04 |
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