Muindasitiri yepetrochemical, kuora kwepombi kunoisa njodzi yakakomba kukuchengetedza kwekushanda, kuchengetedza kwezvakatipoteredza, uye kugona kwehupfumi. Mapombi anowanzo takura zvinhu zvinoora zvakaita semafuta asina kukora, gasi rechisikigo, sulfur compounds, acids, uye alkalis, zvichiita kudzivirira kusvibiswa kwepombi kuve kwekutanga kweinjiniya. Ichi chinyorwa chinoongorora maitiro anonyanya kushanda e-anti-corrosion mumapaipi epetrochemical, inovhara kusarudzwa kwezvinhu, kuchengetedzwa kwepamusoro, kudzivirira kwecathodic, uye kutarisa kwekuora.
Kusarudzwa Kwezvinhu: Mutsara Wokutanga weDziviriro
Kusarudza zvinhu zvinodzivirira corrosion zvakanyanya kuwedzera hupenyu hwesevhisi yemapaipi. Sarudzo dzakajairika dzinosanganisira:
| Material | Type | Key Features | Application Environment |
|---|---|---|---|
| 316L | Austenitic Stainless Simbi | Good pitting resistance; weldable | Acdic media, chloride kuratidzwa |
| S32205 / S32750 | Duplex / Super Duplex | Simba rakakwirira, rakanakisa chloride kuramba | Offshore, brine mapaipi |
| Inconel 625/825 | Nickel Alloy | Kupokana kwakasarudzika kune yakasimba asidhi uye alkalis | Desulfurization, high-temp systems |
| Carbon Steel ine Linings | Lined Steel | Inodhura-inoshanda, ngura yakadzivirirwa nemaraini | Sulfur-rich oil, low-pressure mitsara |
Surface Coating: Muviri Barriers Kurwisa Corrosion
Zvekunze uye zvemukati zvekupfeka zvinopa chipingamupinyi chekudzivirira kuvharira zvinoparadza zvinhu:
• Coal tar epoxy coating:Nzira yechinyakare yekuvigwa mapaipi.
• Fusion Bonded Epoxy (FBE):High-temperature kuramba uye kunamatira kwakasimba.
• 3-Layer PE / PP Coating:Inoshandiswa zvakanyanya kune mapaipi ekufambisa kureba.
Internal linings: Deredzai kusamira kwemvura uye kudzivirira kubva mukati memadziro ekuora.
Kugadzirira kwakakodzera kwepamusoro uye kushandiswa kunokosha pakubudirira kwezvipfeko izvi.
Cathodic Dziviriro: Electrochemical Anti-Corrosion Technology
Kudzivirirwa kweCathodic kunodzivirira electrochemical corrosion nekumanikidza pombi yepasi kuti iite se cathode:
• Sacrificial Anode System: Inoshandisa zinc, magnesium, kana aluminium anodes.
• Impressed Current System: Inoshandisa simba rekunze rekushandisa kushandisa ikozvino.
Iyi nzira inowanzoshandiswa mumapaipi akavigwa uye epasi pegungwa, anowanzo kusanganiswa nemabhandi kuti aite zvakanaka.
Corrosion Monitoring uye Maintenance
Kugara kutariswa kunogonesa kuonekwa kwekutanga kwekuora, kuderedza njodzi dzekutadza:
• Electrical Resistance Probes uye Electrochemical Noise Monitoring yekuongorora-nguva chaiyo;
• Ultrasonic Thickness Gauging yekuona kuonda kwemadziro;
• Corrosion Makuponi ekuongorora chiyero chekuora nekufamba kwenguva.
Kugadzira ongororo yenguva dzose, zvirongwa zvekuchenesa, uye kurapwa kwemakemikari kunobatsira kuchengetedza kuvimbika kwepombi.
Kutevedzera Indasitiri Standards
Ita shuwa dhizaini yako yepombi uye nzira dzekudzivirira dzinoenderana nemitemo yenyika:
TS EN ISO 21809 Ekunze yekubikira zviyero zvemapaipi mupetroleum uye gasi gasi maindasitiri;
NACE SP0169 - Cathodic kuchengetedza maitiro;
API 5L / ASME B31.3 - Mutsetse pombi uye gadzira pombi yekuvaka zviyero.
Mhedziso: Yakabatanidzwa Nzira Yekudzivirira Kwenguva Yakareba
Kushanda kwepipeline corrosion kudzivirira kunoda akawanda-layered strategy, kusanganisira:
• Kusarudzwa kwezvinhu zvine hungwaru,
• Robust coating systems,
• Proactive cathodic dziviriro, uye
• Kuvimbika kwekutarisa nekugadzirisa zvirongwa.
Nekutora yakazara corrosion manejimendi system, petrochemical vanoshanda vanogona kuderedza kuvharika kusina kurongeka, kuwedzera hupenyu hweasset, uye kuona mashandiro akachengeteka, anoshanda.
Nguva yekutumira: May-27-2025