CA2457200A1 - Procede permettant de rendre des metaux resitants a la corrosion - Google Patents

Procede permettant de rendre des metaux resitants a la corrosion Download PDF

Info

Publication number
CA2457200A1
CA2457200A1 CA002457200A CA2457200A CA2457200A1 CA 2457200 A1 CA2457200 A1 CA 2457200A1 CA 002457200 A CA002457200 A CA 002457200A CA 2457200 A CA2457200 A CA 2457200A CA 2457200 A1 CA2457200 A1 CA 2457200A1
Authority
CA
Canada
Prior art keywords
urea
process according
maximum
peroxide
perborate
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.)
Abandoned
Application number
CA002457200A
Other languages
English (en)
Inventor
Johannes Henricus Mennen
Tjay Tjien Tjioe
Paulus Lambertus Alsters
Johan Jozef Ghislain Thoelen
Mathieu Johannes Guillaume Notten
Jan Wiebe Werf Van Der
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.)
DSM IP Assets BV
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2457200A1 publication Critical patent/CA2457200A1/fr
Abandoned legal-status Critical Current

Links

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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un procédé permettant de rendre des métaux résistants à la corrosion au moyen d'un traitement avec un agent anticorrosion, un acier duplex ferritique-austénitique présentant un contenu de chrome compris entre 28 et 35% en poids et un contenu de nickel compris entre 3 et 10% en poids étant utilisé, un oxydant étant mis en contact avec les parties métalliques, et l'air de passivation étant complètement ou partiellement omis.
CA002457200A 2001-08-31 2001-08-31 Procede permettant de rendre des metaux resitants a la corrosion Abandoned CA2457200A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2001/000644 WO2003018861A1 (fr) 2001-08-31 2001-08-31 Procede permettant de rendre des metaux resitants a la corrosion

Publications (1)

Publication Number Publication Date
CA2457200A1 true CA2457200A1 (fr) 2003-03-06

Family

ID=19760765

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002457200A Abandoned CA2457200A1 (fr) 2001-08-31 2001-08-31 Procede permettant de rendre des metaux resitants a la corrosion

Country Status (4)

Country Link
JP (1) JP2005501178A (fr)
CN (1) CN1545565A (fr)
CA (1) CA2457200A1 (fr)
WO (1) WO2003018861A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1688511A1 (fr) * 2005-02-02 2006-08-09 DSM IP Assets B.V. Procédé pour la production d'urée dans une usine conventionelle d'urée
EP2107051A1 (fr) * 2008-04-02 2009-10-07 DSM IP Assets B.V. Procédé pour augmenter la capacité d'une installation de production d'urée existante
KR20110018455A (ko) * 2008-07-23 2011-02-23 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 요소수 탱크용 페라이트계 스테인리스강
JP5018863B2 (ja) * 2009-11-13 2012-09-05 住友金属工業株式会社 耐アルカリ性に優れた二相ステンレス鋼
FI125854B (fi) * 2011-11-04 2016-03-15 Outokumpu Oy Dupleksi ruostumaton teräs
WO2014192823A1 (fr) * 2013-05-28 2014-12-04 東洋エンジニアリング株式会社 Procédé de synthèse d'urée
CN103451664A (zh) * 2013-08-23 2013-12-18 苏州长盛机电有限公司 一种链条的钝化方法
CN106362570B (zh) * 2016-08-27 2019-02-05 湖北宜化集团有限责任公司 一种三聚氰胺中含co2尾气的回收方法及装置
CN107904522A (zh) * 2017-10-18 2018-04-13 江苏理工学院 一种高强度的双相不锈钢合金及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527914A (fr) * 1953-04-15
NL164328C (nl) * 1970-04-02 1980-12-15 Stamicarbon Werkwijze voor het verhogen van de weerstand tegen cor- rosie van austenitische chroom-nikkelstalen, alsmede werkwijze voor de bereiding van ureum in apperatuur waarvan de weerstand tegen corrosie aldus is verhoogd.
NL8304381A (nl) * 1983-12-21 1985-07-16 Stamicarbon Werkwijze en inrichting voor het bereiden van melamine.
IT1251524B (it) * 1991-03-18 1995-05-16 Vincenzo Lagana Metodo per la passivazione delle superfici metalliche interessate da condizioni e agenti promotori di corrosione
SE501321C2 (sv) * 1993-06-21 1995-01-16 Sandvik Ab Ferrit-austenitiskt rostfritt stål samt användning av stålet

Also Published As

Publication number Publication date
CN1545565A (zh) 2004-11-10
JP2005501178A (ja) 2005-01-13
WO2003018861A1 (fr) 2003-03-06

Similar Documents

Publication Publication Date Title
CA2063344C (fr) Procede de passivation des surfaces metalliques touchees par la corrosion et les conditions de service
US8158824B2 (en) Process for the production of urea from ammonia and carbon dioxide
US6793119B2 (en) Process for welding duplex steel
CA2457200A1 (fr) Procede permettant de rendre des metaux resitants a la corrosion
CN114072532A (zh) 尿素装置中的铁素体钢部件
CN111511943B (zh) 双相不锈钢及其用途
EP2279170B1 (fr) Procédé destiné à augmenter la capacité d'une installation de production d'urée existante
AU2001237814A1 (en) Process for welding duplex steel
CA2910373C (fr) Utilisation d'acier inoxydable duplex dans le strippage de l'ammoniaque d'installations de production d'uree
CA2312763C (fr) Procede de preparation d'uree
NL1020388C2 (nl) Werkwijze voor de bereiding van ureum.
WO2006083166A1 (fr) Procédé de production de mélaminés dans une installation de production de mélaminés
NL1016121C2 (nl) Methode voor het corrosiebestendig maken van metalen.
CA1182838A (fr) Methode de production de l'uree
US6858755B2 (en) Process for the preparation of urea
US4591644A (en) Method and installation for the preparation of melamine
EP1867622A1 (fr) Procédé de neutralisation d'agents d'oxydation de carburant de propergol et engrais obtenu par ce procédé
CN115315310A (zh) 铁素体钢在尿素设备的高压工段中的用途
CN118742536A (zh) 尿素合成方法
AU2002252800A1 (en) Process for the preparation of urea

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued