WO2015119528A1 - Inhibiteur de corrosion de métaux et l'entartrage - Google Patents

Inhibiteur de corrosion de métaux et l'entartrage Download PDF

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Publication number
WO2015119528A1
WO2015119528A1 PCT/RU2014/000367 RU2014000367W WO2015119528A1 WO 2015119528 A1 WO2015119528 A1 WO 2015119528A1 RU 2014000367 W RU2014000367 W RU 2014000367W WO 2015119528 A1 WO2015119528 A1 WO 2015119528A1
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Prior art keywords
acid
corrosion
inhibitor
scaling
water
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English (en)
Russian (ru)
Inventor
Нелли Евгеньевна РОМАНОВА
Денис Сергеевич ПЕТРОВ
Сергей Васильевич ПЕТРОВ
Tatiana Petrovna GOLUB (ГОЛУБ, Татьяна Петровна)
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Priority to RU2016106814A priority Critical patent/RU2016106814A/ru
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Classifications

    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/167—Phosphorus-containing compounds
    • C23F11/1676—Phosphonic acids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F14/00—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
    • C23F14/02—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/32—Anticorrosion additives

Definitions

  • the technical field relates to the field of organic chemistry, and in particular to reagents for inhibiting corrosion of metals and scaling, corrosion inhibitors and deposition of mineral salts in gas-oilfield equipment, as well as to increase the flow rate of wells by washing out scaling and decolmatization of productive formations .
  • the invention can also be used as an inhibitor in centralized hot water supply systems of open and closed type, in water recycling cooling systems of industrial enterprises (chemical, petrochemical, metallurgical, etc.) and thermal power plants, for washing salting at various industrial facilities.
  • Each of the inhibitors acts in its intended area.
  • the corrosion inhibitor does not protect against the formation of salts, and the salt inhibitor does not protect against corrosion, but only does not cause it.
  • a composition is known containing, wt%: polyaminomethylphosphonic acid OD-OD 25, sodium salt of polyacrylic acid 0.375-0.9, the rest is water [RU2230766, 2004].
  • the action of the composition is aimed at preventing salt deposits and is completely ineffective in relation to corrosion.
  • corrosion inhibitors represent 73.0-77.5% of the reaction product of phosphoric acid with dimethylaminomethylphenol and 22.5-27.5% water (SU 1801278, 1994), a mixture of sodium hexametate-phosphate, zinc sulfate, potassium dichromate and hydroxyethylidene diphosphonic acid [SU 1834915, 1993].
  • NTP nitrilotrimethylene phosphonic acid
  • hydrochloric acid water
  • compositions exhibiting inhibitory properties both against corrosion and against salt formation are more promising for practical use.
  • a known composition consisting of a corrosion inhibitor, including a phosphate inhibitor, phosphonate inhibitor, anhydrous hygroscopic salt of alkali or alkaline earth metals of inorganic acids (sulfates and carbonates of sodium, potassium, calcium, orthophosphates of alkali metals) and ingi - a scaling inhibitor based on water-soluble acrylates with a molecular weight of 3000–20000, nonionic surfactants selected from a number of polyoxyethylated esters of fatty acids, alcohols, amines, and alkyl phenols.
  • This composition of corrosion inhibitor and scaling is proposed to be produced in tabulated form.
  • the disadvantage of this composition is the need to dose it into the water circulation system in tablet solid form, which does not ensure timely and uniform distribution of the inhibitor in the system.
  • a high concentration of phosphates is formed in the reagent dissolution zone, which can lead to the precipitation of phosphate sludge in a mineralized aqueous medium.
  • the inhibitor contains substances that increase the mineralization of recycled water and the possibility of scale formation, in particular sulfates and carbonates.
  • Sulphates can form soluble iron sulphates, acidifying water, stimulating local corrosion, and under anaerobic conditions sulphates are easily processed by sulphyreducing bacteria into sulphides, which can cause biocorrosion and biofouling of technological equipment.
  • compositions based on phosphonic acids have been widely used.
  • a mixture of hydroxyethylidene diphosphonic acid and iminodiacetic acid dimethyl ester hydrochloride which can significantly (up to 50%) reduce salt deposition at temperatures up to 150 ° C and slightly reduce the corrosion of ferrous metals [SU1636348, 1989].
  • the disadvantage of such compositions is insufficient corrosion protection.
  • Complexonates complex preparations based on complexes of zinc and phosphonic acids, have found wide industrial application for use in highly mineralized water at a temperature of about 90 ° C [A.P. Kovalchuk. Heat Supply News, 2001, M l, pp. 32-35].
  • the essence of the action of complexons is their sorption on the active centers of the formed scale crystals, which prevents the growth of crystals and blocks their agglomeration, ensuring the maintenance of hardness salts (Ca ++ , Mg ⁇ ) in suspension. At the same time, their use is simultaneous.
  • complexonates containing a mixture of 25-30% zinc salts, 40-50% phosphonic acid derivatives and 25-30% insoluble divalent tin salts are known [RU1524537, 1987]; soluble zinc salt and 1-hydroxyethane-1, J-diphosphonic acid [RU2235808, 2002] and a mixture of zinc chloride, ammonium arylsulfonate and hydroxyethylidene diphosphonic (HEDP) acid [SU1813797, 1990].
  • a composition for inhibiting scaling contains hydroxyethylene diphosphonic acid (HEDP), sodium hydroxide, zinc oxide, ethylene glycol (EG), sodium lignosulfonate and water in the following ratio, wt.%: HEDP 16, 0-18.03, sodium hydroxide 5.83-7.0, zinc oxide 5.42-7.12, EG 25.0-40.0, sodium lignosulfonate 4.17-5.0, water - the rest.
  • HEDP hydroxyethylene diphosphonic acid
  • EG ethylene glycol
  • sodium lignosulfonate sodium lignosulfonate
  • the composition for inhibiting scaling contains hydroxyethylenediphosphonic acid (HEDP), sodium hydroxide, zinc oxide, ethylene glycol (EG), sodium lignosulfonate, nitrilotrimethylphosphonic acid (NTP) and water in the following ratio, wt.%: OEDP 5 , 0-8.0, sodium hydroxide 5.83-7.0, zinc oxide 5.42-7.12, EG 25.0-40.0, sodium lignosulfonate 4.17-5.0, NTF 6.67 -9.0, water - the rest.
  • HEDP hydroxyethylenediphosphonic acid
  • EG ethylene glycol
  • NTP nitrilotrimethylphosphonic acid
  • the tests showed that in this concentration range it inhibits scale formation at 150-180 C in a wide pH range, excludes biofouling of heating systems, and prevents the development of corrosion processes of various origins.
  • This composition as shown by production tests, was more effective than additives such as IOMS, OEDP, OEDP- ⁇ , reagents NALCO, VK Giulini and others.
  • the technical problem solved by the authors was the creation of a composition combining enhanced inhibitory properties in relation to formation and corrosion of metals with extended applications in temperature conditions and pH ranges.
  • composition contains at least one acid from the group consisting of phosphonobutantricarboxylic acid (PBTC), nitrilotrimethylene phosphonic acid (NFC) and hydroxyethylene diphosphonic acid (OEDP),
  • PBTC phosphonobutantricarboxylic acid
  • NFC nitrilotrimethylene phosphonic acid
  • OEDP hydroxyethylene diphosphonic acid
  • composition in which the composition contains at least one substance from the group consisting of polyethylene glycol (PEG), polyglycol (PG) and ethylene glycol (EG),
  • PEG polyethylene glycol
  • PG polyglycol
  • EG ethylene glycol
  • composition contains at least one substance from the group consisting of hydrolyzed polymaleic anhydride (GPMA), polyacrylic acid (PAA) and polyepoxy succinic acid (PEC)
  • GPMA hydrolyzed polymaleic anhydride
  • PAA polyacrylic acid
  • PEC polyepoxy succinic acid
  • the stabilizer is the rest.
  • phosphonic acid in a concentration of less than 20% of the mass does not allow achieving the necessary technological efficiency, in a concentration of more than 40% it does not provide a significant improvement in properties and is not economically efficient.
  • glycol in a concentration of less than 1% of the mass does not allow to reduce the freezing point of the product, in concentrations of more than 50% of the composition lose their storage stability. Low amounts of the stabilizer or its absence make the suspension unstable during storage, unnecessarily high concentrations of the stabilizer do not allow to reduce the freezing point of the product and negatively affect its effectiveness.
  • Inhibitors are prepared by mixing predetermined amounts of ingredients (so-called compounding). Inhibitors are used in the form of liquid concentrated formulations at an active principle concentration of 30%. The working concentration of inhibitors is 2-20 mg / l, depending on the intended use and the characteristics of the water.
  • the resulting inhibitors are a clear liquid from colorless to yellow with a density of 1, 1-1, 4 g / cm 3 , they are stable during storage and allow you to work in the range of pH 6-10.
  • the specific formulation of the inhibitor is selected based on the characteristics of the object and the problems posed to the testers.
  • Example 1 By mixing predetermined amounts of phosphonic acids, a stabilizer and glycols, inhibitors were prepared, which were then tested for inhibitory activity with respect to scaling, and their crystallization onset temperature was determined.
  • Sulfa Solution calcium with a mass concentration of 10 g / dm 3 was prepared by mixing two solutions containing: solution ⁇ -> 1 - 250 cm 3 of the solution contains 4.08 g of dehydrated calcium chloride; solution ⁇ ° 2 - 250 cm 3 of the solution contains 5.22 g of sodium sulfate.
  • V 0 is the volume of Trilon B spent on titration of the mixture of salt solutions at the initial moment, cm 3 ;
  • V k is the volume of Trilon B spent on titration of the solution without an inhibitory additive at the end of the test, cm 3 ;
  • V ⁇ is the volume of Trilon B used for titration of the solution with the addition of an inhibitor at the end of the test, cm 3 .
  • Table 1 Some production characteristics of aqueous solutions of the obtained inhibitors.
  • the optimal results are achieved in the presence of a three-component composition.
  • the absence of one of the components reduces both the inhibitory ability of the mixture and leads to a deterioration in performance — it decreases the stability of the composition or increases its crystallization temperature.
  • Example 2 Laboratory tests of the comparative effectiveness of the reagents were carried out on the basis of and in accordance with the “Methodological Recommendations for the Use of Anti-Scum and Corrosion Inhibitors OEDPK, AFON 200-60A, AFON 230-23 A, PAF-13A, IOMS-1 and their analogues tested and certified by RAO "UES of Russia” at energy enterprises "( ⁇ 34.37.536-2004) and” Methodological guidelines for determining the brand and optimal concentration of anti-scale for the treatment of makeup and network water of heating systems " ⁇ 34.37.533-2001 (RD 153-34.0-37.533-2001)
  • Tests on anti-scale efficiency were evaluated by direct measurement of water hardness. Water in autoclaves of simplified design with temperature measurement. The autoclave was heated to a certain temperature in an oven.
  • the concentration of sulfates was increased, because, firstly, the prevention of sulfate scale formation for heat supply systems is a rather urgent problem. Secondly, preventing the formation of a precipitate of calcium sulfate is a more difficult task than preventing the formation of a precipitate of calcium carbonate. This is due to the greater (10,000 times, based on the values of solubility products) necessary degree of supersaturation of the solution and, accordingly, a large number of crystallization centers formed.
  • Example 3 Tests of the anticorrosion properties of inhibitors were carried out at a temperature of 70 ° C, under conditions of free aeration of the solution, which ensures the maintenance of oxygen concentration at the level of 4 mg / dm 3 .
  • oxygen and carbon dioxide in the test water should be completely consumed at the beginning of the experiment and be absent until its end. Therefore, according to the experience of previous studies, the effectiveness of corrosion inhibitors in the conditions of free aeration of a solution, i.e. under tightened conditions, significantly lower than their efficiency obtained using an autoclave.
  • Corrosion tests were carried out in flasks with reverse refrigerators and magnetic stirring of the water.
  • the ratio of the volume of the water sample and the surface area of the samples is taken from GOST 9.502.82.
  • Samples for anticorrosion testing were made of steel 3. The size of the samples is 40x13x1 mm. Each experiment was carried out on 2 samples. The experiment was repeated twice. Corrosion losses were averaged from 4 samples. The concentration of inhibitors was 20 mg / dm. Samples were ground, degreased with acetone and weighed to an accuracy of 0.1 mg. At the end of the experiment, the corrosion products were removed. In water samples without an inhibitor (“blank” samples), the corrosion products were iron-carbonate deposits tightly adhered to the surface of the sample and not mechanically removed. Corrosion products on samples placed in inhibited water, in contrast, were easily removable.
  • Neva tap water was used with an initial salt content of 60 mg / L and a Ca 4 "1" ion content of 8 mg / L.
  • As the model water circulation system worked water evaporated, which was compensated by the addition of fresh tap water ..
  • the corrosion rate of the sample was 0.22 mm / year
  • the salt deposition was 216 g / m
  • the bacterial count was 150 tank / cm .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

L'invention se rapporte au domaine de la chimie organique, et concerne notamment des réactifs servant à inhiber la corrosion de métaux et déposition sous forme de sels d'inhibiteurs de corrosion ainsi que le dépôt de sels minéraux dans des installations d'exploitation de gaz et de pétrole, et servant également à augmenter le débit du puits grâce au rinçage des dépôts sous forme de sels et au décolmatage de couches productrices. L'invention peut également être utilisée en qualité d'inhibiteur dans des systèmes d'alimentation en eau chaude, dans des systèmes de circulation d'eau pour le refroidissement de d'entreprises industrielles et de centrales électriques thermiques, afin de rincer les dépôts sous forme de sels dans des sites industriels. L'invention concerne un inhibiteur comprenant : de l'acide phosphonique en qualité duquel la composition comprend au moins un acide choisi dans le groupe comprenant de l'acide phosphonobutane tricarboxylique, de l'acide nitrilotriméthylène phosphonique et de l'acide oxyéthylène diphosphonique ; du glycol en qualité duquel la composition contient au moins une substance choisie dans le groupe comprenant du polyéthylène glycol, du polyglycol et de l'éthylène glycol ; un stabilisateur en qualité duquel la composition comprend l'une u moins des substances choisies dans le groupe comprenant de l'anhydride polymaléique hydrolysé, de l'acide polyacrylique et de l'acide polyépoxyambrique, ceci selon le rapport en poids suivant des composants : acide phosphonique 20-40%; glycol 1-50%; stabilisateur - le reste. Les résultats ont montré que les inhibiteurs ayant la présente composition permettent de résoudre les problèmes de protection des équipements et des matériaux contre la corrosion et les dépôts sous forme de sels, et qu'ils possèdent des propriétés biocides dont l'efficacité dépasse celle de leurs analogues.
PCT/RU2014/000367 2014-02-06 2014-05-22 Inhibiteur de corrosion de métaux et l'entartrage Ceased WO2015119528A1 (fr)

Priority Applications (1)

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RU2016106814A RU2016106814A (ru) 2014-02-06 2014-05-22 Ингибитор коррозии металлов и солеобразования

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RU2014104331 2014-02-06

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109518173A (zh) * 2018-12-17 2019-03-26 熊映明 铝合金粉末喷涂预处理铬化线清洗水反向串联节水配置
CN109942100A (zh) * 2019-04-18 2019-06-28 南京广全环保技术服务有限公司 一种复合型油田水处理用阻垢剂
CN114958312A (zh) * 2022-01-28 2022-08-30 浙江丽境环保科技工程有限公司 一种高效防腐冷却液添加剂的制备方法及成品
CN115074091A (zh) * 2022-07-08 2022-09-20 陶普斯化学科技(北京)有限公司 一种长效抗酸化高效能载冷剂及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147555A (en) * 1990-05-04 1992-09-15 Betz Laboratories, Inc. Methods of controlling scale formation in aqueous systems
RU2249634C2 (ru) * 2000-06-23 2005-04-10 Атофина Ингибирующие коррозию композиции для жидких теплоносителей
RU2327650C1 (ru) * 2006-08-30 2008-06-27 Сергей Васильевич Петров Композиция для предотвращения солеотложений и коррозии
RU2447197C1 (ru) * 2010-10-12 2012-04-10 Общество с ограниченной ответственностью "Научно-производственный центр "Интехпромсервис" (ООО "НПЦ "Интехпромсервис") Состав для предотвращения отложений неорганических солей
RU2504571C2 (ru) * 2011-09-21 2014-01-20 Общество с ограниченной ответственностью "Дельта-пром инновации" Состав для предотвращения гидратных, солевых отложений и коррозии

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US5147555A (en) * 1990-05-04 1992-09-15 Betz Laboratories, Inc. Methods of controlling scale formation in aqueous systems
RU2249634C2 (ru) * 2000-06-23 2005-04-10 Атофина Ингибирующие коррозию композиции для жидких теплоносителей
RU2327650C1 (ru) * 2006-08-30 2008-06-27 Сергей Васильевич Петров Композиция для предотвращения солеотложений и коррозии
RU2447197C1 (ru) * 2010-10-12 2012-04-10 Общество с ограниченной ответственностью "Научно-производственный центр "Интехпромсервис" (ООО "НПЦ "Интехпромсервис") Состав для предотвращения отложений неорганических солей
RU2504571C2 (ru) * 2011-09-21 2014-01-20 Общество с ограниченной ответственностью "Дельта-пром инновации" Состав для предотвращения гидратных, солевых отложений и коррозии

Non-Patent Citations (1)

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Title
IGNARINA L.M. ET AL.: "Ispytanie termostoikih ingibitorov soleotlozheniy v sisteme teploseti naberezhnochelninskoi TEC.", JURNAL «ENERGETIKA TATARSTANA», 2009, pages 34 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109518173A (zh) * 2018-12-17 2019-03-26 熊映明 铝合金粉末喷涂预处理铬化线清洗水反向串联节水配置
CN109942100A (zh) * 2019-04-18 2019-06-28 南京广全环保技术服务有限公司 一种复合型油田水处理用阻垢剂
CN114958312A (zh) * 2022-01-28 2022-08-30 浙江丽境环保科技工程有限公司 一种高效防腐冷却液添加剂的制备方法及成品
CN114958312B (zh) * 2022-01-28 2023-10-31 浙江丽境环保科技工程有限公司 一种高效防腐冷却液添加剂的制备方法及成品
CN115074091A (zh) * 2022-07-08 2022-09-20 陶普斯化学科技(北京)有限公司 一种长效抗酸化高效能载冷剂及其制备方法

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