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WO2011046466A1 - Steel pipe with a protective coating - Google Patents

Steel pipe with a protective coating Download PDF

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Publication number
WO2011046466A1
WO2011046466A1 PCT/RU2010/000229 RU2010000229W WO2011046466A1 WO 2011046466 A1 WO2011046466 A1 WO 2011046466A1 RU 2010000229 W RU2010000229 W RU 2010000229W WO 2011046466 A1 WO2011046466 A1 WO 2011046466A1
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WO
WIPO (PCT)
Prior art keywords
protective coating
hardener
polyisocyanate
steel pipe
polyurethane
Prior art date
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Ceased
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PCT/RU2010/000229
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French (fr)
Russian (ru)
Inventor
Фирдаус Усманович ЗАМАЛЕЕВ
Малик Фавзавиевич ГАЙСИН
Александр Николаевич ПИЛЮГИН
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Individual
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Application filed by Individual filed Critical Individual
Publication of WO2011046466A1 publication Critical patent/WO2011046466A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/302—Water
    • C08G18/307—Atmospheric humidity
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/02—Polyureas
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes

Definitions

  • the utility model relates to the field of protection of pipelines against corrosion, deposits, exposure to aggressive environments, and is used in steel pipelines designed to transport oil, gas, suspensions, and liquids in the oil and gas, chemical, and utility sectors.
  • the first and main problem is the corrosion that affects all steel pipes in contact with water, acids, especially hydrogen sulfide.
  • protective coatings that prevent corrosion, for example, based on metal anticorrosive materials (stainless steel, aluminum, zinc, etc.) (see RF patent N ° 74682), based on epoxy enamels (see RF patent N ° 81550) , based on bitumen (see RF patent N ° 2279454).
  • a protective coating should have:
  • the temperature range of operation is from -75 to + 120 ° ⁇ , as some pipelines are used in the Far North, and some pipelines are designed for transportation of hot materials. This requirement is not achievable for protective coatings according to RF patent NQ 2279454;
  • the protective coating must have high adhesion to the metal, it can be easily applied both in the factory and in field conditions, have a smooth, monolithic surface and uniform thickness.
  • the technical result of the claimed utility model is to increase the operational characteristics of the protective coating of steel pipes, expanding the arsenal of technical means.
  • composition of a two-component composition based on a polyurethane binder includes: a) floor iol (resin), b) polyisocyanate (hardener); based on a polyurea binder: a) polyamine, b) polyisocyanate (hardener), with a ratio of components from 1: 5 to 5: 1, more preferably from 1: 2 to 2: 1, most preferably 1: 1 by volume.
  • An example of a two-component composition can serve as a two-component liquid composition under the brand name “Ureplen- MetalZashchita "consisting of urethane prepolymers with terminal NCO groups, cured by diamines.
  • a metal ruff or an abrasive blasting machine Before applying a protective coating to the inner surface of steel pipes, for example, a metal ruff or an abrasive blasting machine is to clean the inner surface of scale, rust, and old coatings to achieve higher adhesion of the protective coating to the pipe wall metal.
  • the protective coating is applied by high-pressure spraying followed by polymerization of the coating material in the open air. Moreover, the polymerization occurs due to moisture contained in the air and residual moisture on the inner wall of the pipe.
  • composition based on a polyurethane or polyurea binder as a protective coating for steel pipes will make it possible to obtain a smooth, monolithic surface and uniform thickness with good elasticity, impact strength, chemical and abrasion resistance, high adhesion to metal, and a wide temperature range of operation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paints Or Removers (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

The utility model relates to the field of protecting pipelines from corrosion, deposits and the action of aggressive media and is used in steel pipelines intended for transporting oil, gas, suspensions and liquids in the oil and gas industry, chemical industry and in the public sector. It is proposed as the protective coating for steel pipes to use a two-component composition which is based on a polyurethane or polyurea binder, can be hardened by atmospheric moisture and, after application, forms a protective coating having a high degree of elasticity, impact strength, resistance to abrasion, and chemical and temperature stability. The two-component composition on the basis of a polyurethane binder includes: a) polyol (resin), b) polyisocyanate (hardener); and on the basis of a polyurea binder: a) polyamine, b) polyisocyanate (hardener), with a component volume ratio of from 1:5 to 5:1, more preferably of from 1:2 to 2:1, and most preferably of 1:1. The technical result is an increase in the working characteristics of the protective coating.

Description

ТРУБА СТАЛЬНАЯ С ЗАЩИТНЫМ ПОКРЫТИЕМ  STEEL PIPE WITH PROTECTIVE COATING

ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ DESCRIPTION OF A USEFUL MODEL

Область техники. The field of technology.

Полезная модель относится к области защиты трубопроводов от коррозии, отложений, воздействия агрессивных сред, и применяется в стальных трубопроводах предназначенных для транспортировки нефти, газа, суспензий, жидкостей в нефтегазовой, химической отраслях и коммунальном хозяйстве.  The utility model relates to the field of protection of pipelines against corrosion, deposits, exposure to aggressive environments, and is used in steel pipelines designed to transport oil, gas, suspensions, and liquids in the oil and gas, chemical, and utility sectors.

Уровень техники.  The prior art.

Известно, что транспортировка, посредством стальных трубопроводов, является наиболее эффективным и экономически целесообразным способом перемещения различных жидкостей, газов и других агрессивных сред, но одновременно с этим существует целый ряд проблем, возникающих при их эксплуатации. Первая и основная проблема - это коррозия, которой подвергаются все стальные трубы, контактирующие с водой, кислотами, особенно сероводородом. Известно немало защитных покрытий препятствующих коррозии, например, на основе металлических антикоррозионных материалов (нержавеющая сталь, аллюминий, цинк и т.д.) (см. патент РФ N° 74682), на основе эпоксидных эмалей (см. патент РФ N° 81550), на основе битума (см. патент РФ N° 2279454).  It is known that transportation, through steel pipelines, is the most effective and economically feasible way of moving various liquids, gases and other aggressive environments, but at the same time there are a number of problems that arise during their operation. The first and main problem is the corrosion that affects all steel pipes in contact with water, acids, especially hydrogen sulfide. There are many protective coatings that prevent corrosion, for example, based on metal anticorrosive materials (stainless steel, aluminum, zinc, etc.) (see RF patent N ° 74682), based on epoxy enamels (see RF patent N ° 81550) , based on bitumen (see RF patent N ° 2279454).

Другой проблемой является образование отложений на внутренней поверхности стальных трубопроводов: органических (парафины, асфальтены, смолы и т.д.) и неорганических (соли, гидраты и т.д.). Предпосылкой к образованию отложений является шероховатая поверхность, перепад температур на стенке трубы, наличие статического напряжения при движении транспортируемой среды. Another problem is the formation of deposits on the inner surface of steel pipelines: organic (paraffins, asphaltenes, resins, etc.) and inorganic (salts, hydrates, etc.). A prerequisite for the formation of deposits is rough surface, temperature difference on the pipe wall, the presence of static voltage during movement of the transported medium.

Кроме противодействия указанным проблемам защитное покрытие должно обладать:  In addition to countering these problems, a protective coating should have:

а) высокой эластичностью для исключения образования трещин при изгибе стальных труб, что недостижимо для покрытия по патенту РФ N° 81550;  a) high elasticity to prevent cracking during bending of steel pipes, which is unattainable for the coating according to the patent of the Russian Federation N ° 81550;

б) высокой ударной прочностью, т.к. стальные трубы с покрытием подвергаются ударным нагрузкам при транспортировке, монтаже и эксплуатации;  b) high impact strength, as coated steel pipes are subjected to shock loads during transportation, installation and operation;

в) химической стойкостью к различным маслам, кислотам, щелочам, растворенному газу, сточным водам неизбежно присутствующим, например при транспортировке сырой нефти, различных химикалий, в нагнетательных скважинах поддержания пластового давления и т.д. Данное требование не выполнимо для защитных покрытий по патентам РФ NQ 74682, NQ 2279454; г) абразивной и гидроабразивной износостойкостью, т.к. часто в транспортируемой среде присутствуют абразивные включения (песок, кварц и т.д.). Указанное требование не достижимо для покрытий по патенту РФ NQ 2279454;  c) chemical resistance to various oils, acids, alkalis, dissolved gas, wastewater inevitably present, for example, during transportation of crude oil, various chemicals, in injection wells to maintain reservoir pressure, etc. This requirement is not feasible for protective coatings according to RF patents NQ 74682, NQ 2279454; g) abrasive and hydroabrasive wear resistance, because often in the transported medium there are abrasive inclusions (sand, quartz, etc.). The specified requirement is not achievable for coatings according to the patent of the Russian Federation NQ 2279454;

д) температурным диапазоном эксплуатации от - 75 до + 120 °С, поскольку некторые трубопроводы используются в условиях Крайнего Севера, и некоторые трубопроводы предназначены для траспортировки горячих материалов. Данное требование не достижимо для защитных покрытий по патенту РФ NQ 2279454;  e) the temperature range of operation is from -75 to + 120 ° С, as some pipelines are used in the Far North, and some pipelines are designed for transportation of hot materials. This requirement is not achievable for protective coatings according to RF patent NQ 2279454;

Кроме указанных требований защитное покрытие должно обладать высокой адгезией к металлу, легко наноситься как в заводских, так и в полевых условиях, иметь гладкую, монолитную поверхность и равномерную толщину. In addition to these requirements, the protective coating must have high adhesion to the metal, it can be easily applied both in the factory and in field conditions, have a smooth, monolithic surface and uniform thickness.

Таким образом, представляется полезной разработка стальной трубы с таким защитным покрытием, которое легко наносится, имеет гладкую, монолитную поверхность и равномерную толщину, обладает хорошей эластичностью, ударной прочностью, химической и абразивной стойкостью, высокой адгезией к металлу, широким температурным диапазоном эксплуатации.  Thus, it seems useful to develop a steel pipe with such a protective coating that is easy to apply, has a smooth, monolithic surface and uniform thickness, has good elasticity, impact strength, chemical and abrasion resistance, high adhesion to metal, and a wide temperature range of operation.

Сущность полезной модели.  The essence of the utility model.

Техническим результатом заявленной полезной модели является увеличение эксплуатационных характеристик защитного покрытия стальных труб, расширение арсенала технических средств.  The technical result of the claimed utility model is to increase the operational characteristics of the protective coating of steel pipes, expanding the arsenal of technical means.

Для достижения указанного технического результата предложено использовать в качестве защитного покрытия стальных труб двухкомпонентную композицию на основе полиуретанового или полимочевинного связующего, отверждаемую атмосферной влагой и образующую после нанесения защитное покрытие с высокой эластичностью, ударной прочностью, абразивной, химической и температурной стойкостью. Причем в состав двухкомпонентной композиции на основе полиуретанового связующего входят: а) пол иол (смола), б) полиизоцианат (отвердитель); на основе полимочевинного связующего: а) полиамин, б) полиизоцианат (отвердитель), с соотношением компонентов от 1 :5 до 5:1 , предпочтительнее от 1:2 до 2:1 , наиболее предпочтительно 1 :1 по объему.  To achieve the indicated technical result, it is proposed to use a two-component composition based on a polyurethane or polyurea binder, which is cured by atmospheric moisture and forms a protective coating after application with high elasticity, impact strength, abrasive, chemical and temperature resistance as a protective coating for steel pipes. Moreover, the composition of a two-component composition based on a polyurethane binder includes: a) floor iol (resin), b) polyisocyanate (hardener); based on a polyurea binder: a) polyamine, b) polyisocyanate (hardener), with a ratio of components from 1: 5 to 5: 1, more preferably from 1: 2 to 2: 1, most preferably 1: 1 by volume.

Примером двухкомпонентной композиции может служить двухкомпонентный жидкий состав под торговой маркой «Уреплен- МеталлЗащита» состоящий из уретановых форполимеров с концевыми NCO-группами, отверждаемых диаминами. An example of a two-component composition can serve as a two-component liquid composition under the brand name “Ureplen- MetalZashchita "consisting of urethane prepolymers with terminal NCO groups, cured by diamines.

Осуществление полезной модели.  Implementation of a utility model.

Перед нанесением защитного покрытия на внутреннюю поверхность стальных труб производят очистку, например металлическим ершем или абразивоструйной машиной, внутренней поверхности от окалины, ржавчины, старых покрытий для достижения более высокой адгезии защитного покрытия к металлу стенки трубы.  Before applying a protective coating to the inner surface of steel pipes, for example, a metal ruff or an abrasive blasting machine is to clean the inner surface of scale, rust, and old coatings to achieve higher adhesion of the protective coating to the pipe wall metal.

Нанесение защитного покрытия производят методом высоконапорного распыления с последующей полимеризацией материала покрытия на открытом воздухе. Причем полимеризация происходит за счет влаги содержащейся в воздухе и остаточной влаги на внутренней стенке трубы.  The protective coating is applied by high-pressure spraying followed by polymerization of the coating material in the open air. Moreover, the polymerization occurs due to moisture contained in the air and residual moisture on the inner wall of the pipe.

Использование композиции на основе полиуретанового или полимочевинного связующего, в качестве защитного покрытия стальных труб, позволит получить гладкую, монолитную поверхность и равномерную толщину, обладающую хорошей эластичностью, ударной прочностью, химической и абразивной стойкостью, высокой адгезией к металлу, широким температурным диапазоном эксплуатации.  Using a composition based on a polyurethane or polyurea binder as a protective coating for steel pipes will make it possible to obtain a smooth, monolithic surface and uniform thickness with good elasticity, impact strength, chemical and abrasion resistance, high adhesion to metal, and a wide temperature range of operation.

Claims

ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ USEFUL MODEL FORMULA 1. Труба стальная с защитным покрытием, отличающаяся тем, что в качестве защитного покрытия поверхности трубы использована двухкомпонентная композиция на основе полиуретанового или полимочевинного связующего, с соотношением компонентов от 1 :5 до 5:1 , .  1. Steel pipe with a protective coating, characterized in that a two-component composition based on a polyurethane or polyurea binder, with a ratio of components from 1: 5 to 5: 1, is used as a protective coating on the pipe surface. 2. Труба стальная с защитным покрытием по п.1 , отличающаяся тем, что в состав двухкомпонентной композиции на основе полиуретанового связующего входят: а) пол иол (смола), б) полиизоцианат (отвердитель).  2. Steel pipe with a protective coating according to claim 1, characterized in that the composition of the two-component composition based on a polyurethane binder includes: a) floor iol (resin), b) polyisocyanate (hardener). 3. Труба стальная с защитным покрытием по п.1 , отличающаяся тем, что в состав двухкомпонентной композиции на основе полимочевинного связующего входят: а) полиамин, б) полиизоцианат (отвердитель).  3. Steel pipe with a protective coating according to claim 1, characterized in that the composition of the two-component composition based on a polyurea binder includes: a) polyamine, b) polyisocyanate (hardener). 4. Труба стальная с защитным покрытием по п.1 , отличающаяся тем, что соотношение компонентов композиции защитного покрытия 1 :1 по объему  4. Steel pipe with a protective coating according to claim 1, characterized in that the ratio of the components of the composition of the protective coating is 1: 1 by volume
PCT/RU2010/000229 2009-10-14 2010-05-04 Steel pipe with a protective coating Ceased WO2011046466A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2009138124 2009-10-14
RU2009138124 2009-10-14

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WO2011046466A1 true WO2011046466A1 (en) 2011-04-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11060666B2 (en) 2015-03-17 2021-07-13 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for filling tanks with pressurized gas

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RU2263695C1 (en) * 2004-01-21 2005-11-10 Открытое акционерное общество "Международный Институт Индустриальной Собственности" Polymer composition
RU2264875C2 (en) * 2000-05-24 2005-11-27 Смс Демаг Акциенгезелльшафт Nozzle beam for cooling or descaling continuously cast metallic billets
RU2279454C2 (en) * 2001-04-12 2006-07-10 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Protecting coating for tubes, tube with protection coating, method for applying such coating and its application method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2233302C2 (en) * 1999-11-23 2004-07-27 Виллок Холдинг Б.В. Material and method of protecting surfaces in treating by mechanical, chemical and photochemical means
RU2264875C2 (en) * 2000-05-24 2005-11-27 Смс Демаг Акциенгезелльшафт Nozzle beam for cooling or descaling continuously cast metallic billets
RU2279454C2 (en) * 2001-04-12 2006-07-10 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Protecting coating for tubes, tube with protection coating, method for applying such coating and its application method
RU2263695C1 (en) * 2004-01-21 2005-11-10 Открытое акционерное общество "Международный Институт Индустриальной Собственности" Polymer composition

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TEKHN. INFORMATSIYA EKSTRAPLAN502: "Napylyaemoe elastomernoe pokrytie na osnove polikarbamida (polimocheviny)", TEKHN. INFORMATSIYA EKSTRAPLAN502, 12 February 2008 (2008-02-12), Retrieved from the Internet <URL:http://industrial-floors.kz/uploads/28_extraplan_502.> [retrieved on 20100817] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11060666B2 (en) 2015-03-17 2021-07-13 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for filling tanks with pressurized gas

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