I ka ʻoihana petrochemical, ʻo ka corrosion o nā pipeline he mea hoʻoweliweli koʻikoʻi i ka palekana o ka hana, ka palekana o ke kaiapuni, a me ka hoʻokele waiwai. Lawe pinepine nā paipu i nā mea ʻino e like me ka aila ʻaila, ke kinoea maoli, nā pūhui sulfur, nā waikawa, a me nā alkalis, e hana ana i ka pale ʻana i ka pipeline i mea nui o ka ʻenehana. Ke ʻimi nei kēia ʻatikala i nā hoʻolālā maikaʻi loa no ka anti-corrosion i nā pipeline petrochemical, e uhi ana i ke koho ʻana i nā mea, ka pale ʻana i ka ʻili, ka pale cathodic, a me ka nānā ʻana i ka corrosion.
Koho Mea: Ka Laina Palekana Mua
ʻO ke koho ʻana i nā mea pale-corrosion e hoʻonui nui i ke ola lawelawe o nā pipeline. Aia nā koho maʻamau:
| Mea waiwai | ʻAno | Nā mea nui | Kaiapuni noi |
|---|---|---|---|
| 316L | Austenitic Stainless Steel | Kūleʻa lua maikaʻi; hiki ke weld | ʻO ka media acidic, hoʻolaha i ka chloride |
| S32205 / S32750 | Duplex / Super Duplex | ʻO ka ikaika kiʻekiʻe, ke kū'ē chloride maikaʻi loa | Offshore, brine pipelines |
| Inconel 625 / 825 | ʻAi Nikela | Kūʻē kūʻē i nā waikawa ikaika a me nā alkalis | Desulfurization, nā ʻōnaehana wela kiʻekiʻe |
| ʻO ka hao hao me nā lining | Laina kila | ʻO ke kumu kūʻai, pale ʻia i ka ʻinoʻino e ka lining | ʻO ka ʻaila waiwai sulfur, nā laina haʻahaʻa haʻahaʻa |
Ka uhi ʻana o ka ʻili: ʻAke kino e kūʻē i ka ʻino
Hāʻawi ka uhi waho a me loko i kahi pale pale e pale ai i nā mea corrosive:
• Uhi epoxy tar lanahu:ʻO ke ala kuʻuna no nā paipu kanu ʻia.
• Fusion Bonded Epoxy (FBE):Ke kū'ē i ka wela kiʻekiʻe a me ka hoʻopili ikaika.
• 3-Layer PE / PP uhi:Hoʻohana nui ʻia no nā pipeline hoʻouna lōʻihi.
ʻO nā linings i loko: E hoʻemi i ka pale ʻana i ka wai a pale i ka ʻino o ka paia o loko.
ʻO ka hoʻomākaukau pono ʻana a me ka hoʻohana ʻana he mea koʻikoʻi ia i ka pono o kēia mau uhi.
Palekana Cathodic: Electrochemical Anti-Corrosion Technology
ʻO ka pale Cathodic e pale i ka ʻino electrochemical ma ke koi ʻana i ka ʻili o ka pipeline e hana ma ke ʻano he cathode:
• Pūnaehana Anode Mohai: Hoʻohana i nā anodes zinc, magnesium, a alumini paha.
• Impressed Current System: Hoʻohana i kahi kumu mana waho e hoʻohana i kēia manawa.
Hoʻohana maʻamau ʻia kēia ʻano i nā paipu kanu ʻia a i lalo o ka moana, i hui pinepine ʻia me nā uhi no ka hana maikaʻi loa.
Ka kiaʻi ʻana a me ka mālama ʻana
Hiki i ka māka'ika'i ma'amau ke 'ike mua i ka 'ino, e ho'emi ana i ka pilikia o ka hiki 'ole:
• Uila Kū'ē Kū'ē a me Electrochemical Noise kiaʻi no ka maoli-manawa kālailai;
• Kani ultrasonic mānoanoa ana no ka paia thinning ike;
• ʻO nā Coupons Corrosion no ka loiloi ʻana i ka helu ʻino i ka wā.
ʻO ka hoʻokumu ʻana i nā nānā maʻamau, nā papa hoʻomaʻemaʻe, a me nā lāʻau kemika e kōkua i ka mālama pono ʻana i ka pipeline.
Hoʻokō me nā Kūlana ʻOihana
E hōʻoia i kāu hoʻolālā pipeline a me nā hoʻolālā palekana e kūlike me nā lula honua:
ISO 21809 - Nā kūlana hoʻopili waho no nā paipu i loko o nā ʻoihana ʻaila a me nā kinoea kūlohelohe;
NACE SP0169 - Nā pae hoʻomalu palekana Cathodic;
API 5L / ASME B31.3 - Paipu laina a me ka hana paipu hana maʻamau.
Ka Hopena: Hoʻohui Hoʻohui no ka Hoʻopale lōʻihi
Pono ka pale ʻana i ka corrosion pipeline i kahi hoʻolālā multi-layered, me:
• koho mea akamai,
• nā ʻōnaehana pale paʻa,
• Hoomalu cathodic proactive, a
• Nā polokalamu mālama pono a mālama pono.
Ma ka hoʻohana ʻana i kahi ʻōnaehana hoʻokele corrosion piha, hiki i nā mea hana petrochemical ke hōʻemi i nā pani pani ʻole ʻia, hoʻonui i nā ola waiwai, a hōʻoia i nā hana palekana a maikaʻi.
Ka manawa hoʻouna: Mei-27-2025