Anti-hydrogen sulfide ntsuas rau tooj dag fittings hauv pipelines
May 14, 2025
Taw qhia rau hydrogen sulfide cov nyom ntawm cov roj pipelines
Brass fittings hauv roj av pipelines ua kom muaj kev phom sij ntawm hydrosas Cov tswv yim ua kom ntev dua tooj dag zog ua haujlwm lub neej sour roj thiab roj av {}}
H₂s corrosion mechanisms nyob rau hauv tooj dag alloys
Hydrogen sulfide reacts nrog tooj dag los ntawm peb txoj kev:
Sulfide Kev Nyuaj Siab Cracking (SSC): Cov kab ke no tau nkag mus rau thaj tsam sib cog lus, ua rau ploj mus
DEZINCICATION: Xaiv Zinc Leaching nplooj ntxeem cov qauv tooj liab
Pitting corrosion: Cov neeg tawm tsam hauv zos tau tsim kev sib sib zog nqus cov kab noj hniav ({0}} hli / xyoo nyob rau hauv cov neeg loj heev)
Kuaj cov C68700 (arsenical tooj dag) txo tus nqi dezincification los ntawm 70% piv rau cov qauv C36000 ib puag ncig hauv 50 ppm h₂s ib cheeb tsam.
Cov Khoom Siv Xaiv Cov Khoom Siv Rau Sour Service
Qhov zoo tshaj plaws tooj dag alloys rau cov kev pabcuam hauv H₂S yuav tsum tau raws:
Zinc cov ntsiab lus hauv qab 35%Kom txo qis dezincification
Arsenic / nickel additives({0.02-0.1%) rau cov hmoov nplej ciam ua kom ruaj khov
Paib lub zog hauv 275 MPaKom dhau ssc
Rockwell b hardness<65Rau kev tawg tsis kam
Cov ntaub ntawv teb tau lees paub C69400 (silicon-compified-compified-compified-compified tooj) withstal1000+}}}
Cov Khaub Ncaws Tiv Thaiv thiab Kho Cov Ntsej
Advanced Txheej Technologies Txhawb Brass Fitting Fitting Durability:
Electroless Nickel-phosphorus (5-12 μm): Txo cov nqi corrosion los ntawm 90%
PTFE IMPETNation: Tsim cov roj-impermeable barriers
Graphene outre: Blocks Electrochemical cov kev tshua
Laser nto anoying: Cov pob corrosion-resistant intermetallic txheej
Lub chaw kuaj pob hluav taws xob tawm ua cov khoom siv tawm dag zog ntev li qub
Cov Tshuaj Tiv Thaiv Cov Tshuaj Tiv Thaiv
Cov tshuaj lom neeg tau zoo rau cov khoom muag khoom yog:
Zaj duab xis-ua cov amines({5-15 ppm kev txhaj tes txuas ntxiv)
Oxygen ScavengersTxhawm rau tiv thaiv syeroistic corrosion
Phob stabilizersTswj 7.5-8.5} Cov mob alkaline
Tooj liab-tshwj xeeb corrosion inibitors(Benzotriazole derivatives)
Cov neeg xa xov cov neeg xa xov qhia siv 80% kev txo qis tus nqi siv sib xyaw ua ke inhibitor cocktails ntawm txhaj ntsiab lus .
Kev hloov kho tsim rau cov pob khaus
Kev tsim kho cov tshuab ua kom txo qis hís kev puas tsuaj:
Ntxiv phab ntsa tuab({20-30% dhau tus qauv) rau kev noj kom xeb
Strele Straylined RathsTxhawm rau tiv thaiv kom tsis txhob muaj kev nyuaj siab
Kev sib xyaw ua keRau Electrochemical Kev Tiv Thaiv
Muab ob npaug rau-Foob Drem DesignsHauv tooj dag li qub
Nruab nrab sab hnub tuaj qaub roj teb qhia cov kev hloov kho no txuas lub neej zoo los ntawm 2 mus rau {} .
Kev Ntsuam Xyuas thiab Kev Txij Nkawm Muaj Kev Lag Luam
Qhov tseem ceeb coj rau H₂S kev pab cuam tooj dag zog:
Peb hlis twg ultrasonic tuab xeem ntawvRau Phab ntsa ploj mus nrhiav
Txhua Xyoo Tshuaj Xyuas Kev Tshawb Xyuas Txhua XyooRau kev sib tsoo subsurface
Nruam Cov Khaub Ncaws NrawmNrog Electrochemical Sensors
Biannual txheej kev cai lij choj kuaj xyuasSiv Nyiaj So Detectors Nyiaj So
Txwv saib xyuas xyuas saib xyuas tuaj yeem twv kom lub neej pabcuam uas tseem tshuav hauv ± 15% tseeb .
Kev tawm tswv yim hauv cov roj tiv thaiv
Kev tsim tawm tshiab rau cov ntawv thov yav tom ntej:
Kho kom zoo rau tus kheejNrog microencapsulated inhibitors
Nanostructured nto kev kho mobMuab cov molecular-theem kev thaiv
Ntse fittingsNrog embedded corrosion sensors
Cov Khoom Siv Khoom Ntxiv Cov Khoom SivNrog cov qauv nplej zoo
Pilot ua yeeb yam qhia Graphene-Enhanced tooj dag tiv thaiv 500 ppm h₂s tsis muaj qhov ntsuas tau sai tom qab 2000 teev .
Xaus: Multilayered Kev Tiv Thaiv Tawm Tsam Tawm Tsam Tawm Tsam
Tiv thaiv Brass fittings hauv cov roj hmab roj hmab, thiab kev siv tshuaj lom neeg muaj zog, thiab cov tshuaj tiv thaiv kev ua haujlwm yuav loj hlob ntxiv rau kev tswj hwm Pipeline kev ncaj ncees thiab kev nyab xeeb .
Nyem ntawm no kom saib ntau cov yeeb yaj kiab
