- Muaj ob lub ntsiab ntawm corrosion nyob rau hauv pipelines:
1. Electrochemical corrosion: Txij li cov roj thiab roj qhov dej muaj corrosive gases xws li CO2 thiab H2S, electrochemical corrosion yog feem ntau tshwm sim nyob rau hauv underground roj thiab roj pipelines. Yog li ntawd, electrochemical corrosion kuj muaj nyob rau hauv pipelines.
2. Local corrosion: Local corrosion yog ib hom corrosion uas tshwj xeeb tshaj yog rau cov kav dej. Cov hom kev txhim kho hauv zos hauv cov kav dej muaj xws li: kev ntxhov siab corrosion tawg, crevice corrosion, galvanic corrosion, hydrogen corrosion, corrosion qaug zog, thiab lwm yam.
Hais txog qhov teeb meem corrosion ntawm cov roj kav dej, txij li cov ntsiab lus tseem ceeb ntawm kev xeb yog electrochemical corrosion thiab hauv zos corrosion, cov nyhuv anti-corrosion ntawm cov txheej txheem dav dav yog qhov tsis zoo. Qhov chaw ua haujlwm thiab kev ua haujlwm ntawm cov roj av txiav txim siab qhov nyuaj ntawm txheej txheej. , tus nqi siab thiab kev ua haujlwm tsis yooj yim. Yog tias koj xav kom ncua kev pab cuam lub neej ntawm koj cov kav dej, koj yuav tsum tswj xyuas lawv tsis tu ncua.
- Yog li yuav ua li cas tiv thaiv roj pipeline corrosion?
1. Sab hauv phab ntsa yog coated nrog anti-corrosion txheej. Cov txheej txheem siv feem ntau suav nrog amine-kho epoxy resin thiab polyamide epoxy resin, nrog txheej tuab ntawm 0.0}38 txog 0.2 hli. Txhawm rau kom ntseeg tau tias cov txheej txheem ruaj khov rau cov yeeb nkab phab ntsa, cov phab ntsa sab hauv ntawm cov yeeb nkab yuav tsum tau kho qhov chaw.
2. Anti-corrosion txheej rau ntawm phab ntsa sab nrauv. Siv cov xim sib npaug rau saum npoo ntawm cov kav hlau uas tshem tawm xeb kom cais nws los ntawm ntau yam corrosive media yog ib txoj hauv kev yooj yim ntawm cov kav dej los tiv thaiv corrosion. Nyob rau niaj hnub nim no, pipeline anti-corrosion coatings nce siv cov ntaub ntawv sib xyaw lossis cov qauv sib xyaw. Cov ntaub ntawv thiab cov qauv no yuav tsum muaj kev ua haujlwm zoo electrolytic, lub cev muaj zog, cov khoom siv tshuaj lom neeg ruaj khov thiab kev hloov pauv kub ntau.
3. Plating thiab txheej. Cov txheej txheem ntawm cov hlau yog tsim los ntawm plating txheej txheej ntawm cov hlau ntawm cov hlau siv cov txheej txheem xws li electroplating, txau, thiab cua sov. Lub txheej yog muab faib ua ob hom: anode txheej thiab cathode txheej. Lub peev xwm ntawm cov txheej txheem yog qhov tsis zoo tshaj qhov muaj peev xwm ntawm lub hauv paus hlau. Nws yog anode txheej. Lub hauv paus ntsiab lus tseem ceeb yog txoj kev tiv thaiv cathodic ntawm sacrificial anode. Txoj kev no yog qhov tshwj xeeb tshaj yog rau cov hlau uas muaj cov hlau ntxhib. Lwm hom plating nrog lub peev xwm siab dua li cov txheej plated yog qhov tsis zoo plating. Cov txheej txheem no muaj cov kev xav tau siab dua ntawm cov hlau yuav tsum tau plated thiab yuav tsum tau ua kom tiav, txwv tsis pub nws yuav yooj yim nrawm rau corrosion ntawm cov hlau.
4. Corrosion inhibitor. Ntxiv cov khoom me me rau cov xov xwm corrosive tuaj yeem txo lossis txawm tias inhibit qhov corrosion. Tus neeg sawv cev corrosive yog ib qho yooj yim rau kev thov, muaj txiaj ntsig sai thiab muaj txiaj ntsig zoo rau kev lag luam.
