Phaj kub exchanger
Phaj heat exchanger yog cov khoom siv hluav taws xob hloov hluav taws xob nrog kev hloov hluav taws xob siab, hneev taw me me, yooj yim installation thiab siv, lub teeb yuag, tsis tshua muaj fouling thiab compact qauv. Txawm li cas los xij, vim muaj kev txwv ntawm nws tus kheej cov qauv, kev siv cov phaj kub hloov pauv siab tsis tshaj 2.5MPa, kev siv kub tsis tshaj 250 degree, thiab muaj corrosive media thiab sealing gasket corrosion teeb meem.
1, Lub phaj kub exchanger corrosion ua rau
(1) Kev xaiv cov khoom siv rau cov khoom siv hluav taws xob sib txawv: cov khoom siv hluav taws xob hloov hluav taws xob tseem ceeb ntawm cov pa roj carbon steel, stainless hlau phaj, titanium phaj, SMO254, Hastelloy thiab lwm yam khoom siv hlau, rau cov khoom sib txawv xaiv cov khoom siv hlau corrosion-resistant, raw cov ntaub ntawv xaiv. unreasonably yuav intensify corrosion, mob loj heev rau kev siv ntawm tshav kub exchangers lub sij hawm.
(2) Qhov kub thiab txias corrosion yog cov tshuaj hloov pauv, muaj cov ntaub ntawv uas qhia tau tias txhua qhov nce qhov kub ntawm 10 degree, tus nqi corrosion ntawm kwv yees li 1-3 zaug siab dua. Tab sis muaj cov xwm txheej quab yuam majeure, thaum qhov kub thiab txias tuaj yeem txo qhov kev ua haujlwm ntawm lwm cov ntsiab lus ntawm corrosion, qhov kub ntawm corrosion kuj yuav raug txo.
(3) Cov tshuaj nyob rau hauv ib co ntsiab lus ntawm cov tshuaj lom residues (xws li chloride ion cov ntsiab lus, sulfur ions, ammonia zoo ions, thiab lwm yam) ntawm lub sij hawm ntev kov, nyob rau hauv tej rooj plaub yuav ua rau corrosion hnyav dua.
(4) Cov ntsiab lus ntawm cov khoom ntawm lub tshav kub exchanger corrosion tsis zoo li qub. Hauv dilute hydrochloric acid, qhov ntau dua qhov concentration ntawm corrosion yog qhov hnyav dua. Thiab carbon hlau los yog stainless hlau phaj nyob rau hauv cov ntsiab lus ntawm 50 feem pua nce thiab down qhov loj tshaj corrosion ntawm concentrated hydrochloric acid, thiab thaum cov ntsiab lus yog nce mus rau 60 feem pua ntawm saum toj no, corrosion nyob rau hauv lem plummeted.
(5) PH nqi ntawm cov ntaub ntawv hlau corrosion kuj yog ib qho kev puas tsuaj.
2, Hauv cov khoom siv hluav taws xob hloov hluav taws xob, hom phaj kub exchanger corrosion
(1) Cov txheej txheem corrosion ntawm cov hlau saum npoo kov qhov nruab nrab tag nrho los yog feem ntau ntawm lawv yog corroded, ua rau cov khoom tsis sib xws ntawm cov khoom hlau, thiab nws thiaj li puas.
(2) crevice corrosion yog li ntawd ib feem ntawm cov hlau nto ntawm oxide zaj duab xis puas, ua specifications tsawg tshaj li 1 hli ntawm qhov tawg los yog corrosion pits.
(3) Interstitial corrosion yog tshwm sim ntawm interstices ntawm hlau qhov chaw vim yog photoelectric catalytic imbalance ntawm cov khoom seem. Tus yuam sij yog tsim nyob rau hauv lub ntug ntawm lub phaj thiab sealing fastening ntug.
(4) Hauv av kev nyuaj siab corrosion ntawm kev ntxhov siab sab hauv, sab nraud quab yuam thiab corrosion nyob rau hauv lub synergistic nyhuv ntawm kev tsim ntawm cracking, tawg yog lub hauv paus ntawm corrosion ntawm av kev nyuaj siab corrosion.
(5) Kev puas tsuaj rau cov hlau txheej txheej ntawm cov khoom corrosive tib lub sij hawm muaj kev puas tsuaj thiab corrosion ntawm kev puas tsuaj. Hom kev tiv thaiv corrosion no tsim nyob rau hauv lub phaj lossis yeeb nkab channel lossis qhov chaw sib txawv.
3, Phaj tshav kub exchanger anti-corrosion txoj kev
(1) Siv rau hauv tus account lub peev xwm ntawm cov ntaub ntawv hlau los tiv thaiv cov khoom siv corrosion, kev xaiv tsim nyog ntawm cov khoom siv rau cov khoom siv hluav taws xob.
(2) Nyob rau hauv cov hlau nto mus nqa tawm stainless hlau passivation, thiaj li hais tias cov saum npoo ntawm huab cua oxide zaj duab xis rau hauv ib txheej ntawm Vajtswv ntev ntom thiab nyias zaj duab xis, tau sai corrosion kuj.
(3) Kev siv cov qauv tsim hluav taws xob tsim nyog thiab ua haujlwm zoo thiab tag nrho cov dej ntws ib txwm muaj, kom yooj yim rau corrosion ntawm qhov nkag.
(4) Kev siv cov khoom siv gasket zoo thiab cov nplaum gasket.
(5) Nyob rau hauv cov khoom siv corrosive, koj tuaj yeem ntxiv tus nqi ntawm tus neeg sawv cev desulfurization, tuaj yeem ua rau cov yam ntxwv corrosion ntawm cov hlau txo qis. Txawm li cas los xij, qhov sib ntxiv ntawm tus neeg sawv cev desulfurization tsis tuaj yeem ua rau muaj kev phom sij rau kev tsim khoom thiab cov khoom zoo.
