Ma nā ʻoihana e like me ka aila, ke kinoea, nā kemika, a me ka mana, lawe nā pipeline i ke kuleana koʻikoʻi o ka lawe ʻana i ka media, e like me nā kīʻaha koko. Eia naʻe, hiki i kēia mau paipu ke hoʻopōʻino ma muli o ka -ʻike lōʻihi i ka makū, nā kemika ʻino, a i ʻole ka wela wela. ʻAʻole kēia e hōʻemi wale i ko lākou ola lawelawe akā hiki ke alakaʻi i nā hanana palekana e like me nā leaks a me nā pahū. ʻO ka puka ʻana mai o ka paipu kila kūpaʻa -kūpono i kēia pilikia. Ma o ke kaʻina hana kūikawā, ua hoʻokumuʻia kahi pale pale ma luna o ka paipu kila, e hana ana e like me ka pale pale, e hoʻonui nui i ke ola o ka paipu a me ka hōʻoiaʻana i ka hana o ka pūnaewele palekana.
1. ʻO ke ʻano o ka ʻinoʻino- paipu kila kūpaʻa: kahi hui o ka paipu kila a me ka papa pale.
Ma kona kumu, he paipu kila ma'amau ka corrosion -e like me ka seamless, spirally welded, a pololei-seam welded), akā, 'oko'a ia no ka ho'ohana 'ia 'ana o ka mea 'ino i ka ili o loko a me waho o ka paipu. Hiki ke hoʻokaʻawale ʻia kēia mau ʻāpana pale i ʻekolu mau ʻāpana e pili ana i ka mea a me ke kaʻina hana i hoʻohana ʻia: ka uhi ʻana, ka lining, a me ka pale ʻana i ka corrosion electrochemical. ʻO ka uhi ʻana ka mea i hoʻohana nui ʻia i kēia mau ʻenehana.
ʻO nā mea hoʻouhi maʻamau, ʻo ia ka epoxy powder coating (FBE), ʻekolu-layer polyethylene (3PE), polyethylene adhesive tape, a me ka polyurethane. ʻO ka lawe ʻana i ka 3PE ma ke ʻano he laʻana, aia kahi papa kumu o ka pauka epoxy (e hāʻawi ana i ka hoʻopili ikaika ʻana i ka paipu kila a me ke kūpaʻa kemika), kahi papa waena o ka adhesive (e hoʻopili ana i ka papa epoxy i ka papa polyethylene o waho), a me kahi papa waho o ka polyethylene (kū kūʻē i ka pōʻino mechanical a me nā kukui UV). Ke hana like nei kēia ʻano ʻekolu-e pale aku i ka ʻinoʻino mai ka lepo a me ka wai kai, ʻoiai e pale ana i ka hopena kino ke kanu ʻia a ma luna paha.
2. 'O ka "Logic Protection" o -Corrosion Steel Pipe: 'Ekolu 'Elemu no ka pale 'ana i ka poino.
ʻO ka hoʻoheheʻe metala he hopena electrochemical. Ke hoʻopili ʻia nā paipu kila me ka wai, oxygen, a me nā electrolytes (e like me ka paʻakai i loko o ka lepo), hana ʻia kahi puʻupuʻu galvanic, e hoʻoneʻe ai nā ʻātoma hao i nā electrons a oxidize (hana i ka rust). Paʻa nā paipu kila kūpaʻa i ka corrosion-i kēia kaʻina hana ma o kēia mau ʻano:
Hoʻokaʻawale kino: ʻO nā mea uhi a i ʻole nā mea lining (e like me ka polyethylene a i ʻole ka ceramic) e hoʻokaʻawale loa i ka paipu kila mai ka mea ʻino, e pale ana i ka hoʻopili pololei ʻana.
ʻO ka passivation kemika: Hoʻopili kekahi mau uhi (e like me ka pauka epoxy) me ka ʻili o ka paipu kila e hana i kahi kiʻiʻoniʻoni passivation paʻa, e pale ana i ka hoʻoili electron.
Palekana Electrochemical: Hoʻohana ʻia ka ʻenehana pale cathodic i kēia manawa (ICCP) (hoʻohana pinepine ʻia me ka uhi ʻana) i ke ʻano hoʻohuli i ka paipu kila, e hoʻohuli iā ia i cathode, a laila e pale ai i ka ʻino ʻana me he anode.
No nā paipu aila a me ke kinoea i kanu ʻia, no ka laʻana, pale ka uhi ʻana o 3PE i ke komo ʻana o ka makū a me ka paʻakai mai ka lepo, ʻoiai ʻo kahi ʻōnaehana pale cathodic e hāʻawi i kahi papa hou o ka pale, e hoʻolōʻihi i ke kaʻina hana corrosion inā ʻo ka uhi ʻana i kahi hapa.
3. ʻO ka palapala 'āina hiki o ka ʻino -paipu kila kū'ē: hoʻololi i nā hiʻohiʻona like ʻole.
He ʻokoʻa ka pono o ka pale ʻana i ka corrosion ma waena o nā hiʻohiʻona ʻoihana like ʻole, e hopena i nā ʻano paipu kila kūpaʻa -ʻino i hoʻolālā ʻia e hoʻoponopono i nā pilikia kūlohelohe.
No nā paipu i kanu ʻia: 3PE a i ʻole epoxy coal tar coatings i makemake ʻia. ʻO ka mea mua ke kūpaʻa i ke koʻikoʻi o ka lepo a me ke komo ʻana o ke aʻa mea kanu, kūpono ia no ke kinoea maoli a me ka lawe ʻana i ka aila hoʻomaʻemaʻe; ʻo ka mea hope he haʻahaʻa-kuai a me ka makū-kūpono, no laila hoʻohana maʻamau ia i ka lako wai a me nā ʻupena wai.
Kaiapuni moana: ʻO ka ʻike ʻana i ka ʻehu paʻakai kiʻekiʻe, nā kukuna UV ikaika, a me ka hoʻoinu ʻana i ke kai, ʻoi aku ka kūpono o ka pauka epoxy + polyurethane outer sheath a i ʻole titanium nano -paipa kila i uhi ʻia, me ka lōʻihi o ke kūpaʻa ʻana o ka paʻakai ma mua o 20 mau makahiki.
Kaiapuni -mahana kiʻekiʻe a kiʻekiʻe-: No nā pūnaewele mana wela a i ʻole nā paipu hoʻoheheʻe kemika, nā ʻili seramika a i ʻole nā ʻili epoxy kiʻekiʻe (hiki ke kū i nā mahana ma mua o 300 degere), e hāʻawi ana i ka pale ʻana i ka corrosion a me ke kūpaʻa deformation wela.
Mea hoʻolaha kūikawā: I ka lawe ʻana i nā hāʻina ʻakika a me ka alkaline (e like me ka sulfuric acid a me ka lye), pono ka polytetrafluoroethylene (PTFE)-paipu kila laina. ʻO kona ʻeleu kemika e pale aku i nā wai ʻino loa.
4. Ka Waiwai o -A'e i ka Corrosion Steel Paipu
He mea nui ka pomaikai o ka hoohana ana i na paipu kila anti-corrosion. Pono paha e ho'ololi 'ia nā paipu kila ma'amau i kēlā me kēia 3-5 makahiki i loko o nā pō'ino, a'o nā paipu kila anti-corrosion ki'eki'e, hiki ke lō'ihi i 20-50 makahiki (no ka la'ana, ua ho'olālā 'ia nā paipu i kanu 'ia he 3PE no 50 makahiki). No ka laʻana, hiki i ka pahū ʻana o ka paipu kinoea kūlohelohe ma muli o ka corrosion a me ka leakage hiki ke hopena i nā poho hoʻokele waiwai o nā haneli miliona miliona. Eia nō naʻe, ʻo ka hoʻopukapuka ʻana i nā paipu kila anti-corrosion he 5% -15% wale nō o ke kumukūʻai pipeline holoʻokoʻa, akā hiki ke hōʻemi i ka hopena o kahi pōʻino ma mua o 90%.
Eia hou, ho'oikaika 'ia nā paipu kila anti-corrosion. Hoʻemi ka corrosion i ka maikaʻi o ka paipu (no ka laʻana, hoʻonui ka scaling i ke kūpaʻa), ʻoiai ʻo ka anti corrosion e mālama i ka ʻili paipu i loko, e hōʻemi ana i ka nalowale o ka ikehu. ʻO ka hoʻonui ʻana i ke ola lawelawe e hōʻemi i ka hopena o ke kaiapuni o nā paipu kila i hoʻolei ʻia.
Ka Hopena: ʻO ka "Kākua Invisible" e pale ana i ke ola o ka ʻoihana
Mai ke Komohana nui-East Gas Pipeline a hiki i nā laina hoʻouna o nā mea kanu kemika kahakai, mai nā ʻōnaehana wai ma lalo o ke kūlanakauhale a i nā paipu ikehu o nā keʻena noiʻi polar, nā paipu kila anti-corrosion e mālama mālie i ka palekana a me ka pono o ka ʻoihana hou. Me ka holomua o ka ʻepekema waiwai a me ka ʻenehana anti-corrosion (e like me ka hoʻomohala ʻana i ka nano-coatings a me ka mākaʻikaʻi naʻauao anti{-papa ʻino), e ʻoi aku ka naʻauao a me ka lōʻihi o nā paipu kila anti-corrosion e hiki mai ana, e hoʻomau ana i ka lilo ʻana i kumu paʻa no ka pale ʻana i ka ikehu honua a me nā ʻāpana hana.
