Electrochemical Anti-corrosion Maintenance Ntawm Phaj Thaum tshav kub kub Exchangers

Paub txog qhov ua rau muaj ntau yam corrosion hauv cov khoom siv hluav taws xob sib txawv thiab xaiv qhov tsim nyog los tiv thaiv corrosion tuaj yeem ua tiav lub hom phiaj ntawm kev siv cov khoom siv zoo. Hais txog qhov teeb meem corrosion, cov txheej txheem tiv thaiv corrosion hauv qab no tau npaj tseg: ntawm no peb feem ntau qhia txog corrosion inhibitors thiab electrochemical tiv thaiv.
1. Corrosion inhibitor
Corrosion inhibitors feem ntau yog tsim los ntawm chromate feem ntau siv hauv cov dej txias. Chromate ions yog ib qho anodic (txheej txheem) inhibitor, thiab thaum ua ke nrog cov cathodic inhibitors, txaus siab thiab kev lag luam los tiv thaiv corrosion tuaj yeem ua tiav.
Chromate zinc polyphosphate: Kev siv cov polyphosphate yog vim nws lub peev xwm los ntxuav cov hlau thiab inhibit corrosion. Polyphosphate tuaj yeem hloov pauv ib nrab rau hauv orthophosphate, uas tuaj yeem tsim cov colloidal cations loj nrog calcium los tiv thaiv cov txheej txheem cathodic.
Chromate zinc phosphonate: Txoj kev no siv sodium phosphonate es tsis txhob polyphosphate thiab zoo ib yam li txoj kev dhau los. Aminomethylphosphonates kuj tseem siv tau rau hauv cov xwm txheej uas tus nqi pH teev rau polyphosphate siab dua. Aminomethylphosphonates tuaj yeem tiv thaiv kev tsim cov nplai thiab tswj cov nag lossis daus ntawm calcium ntsev txawm nyob ntawm pH ntawm 9.
Chromate zinc hydrolyzed polyacrylamide: Vim muaj cov nyhuv dispersing ntawm cationic copolymer hydrolyzed polyacrylamide, nws tuaj yeem tiv thaiv lossis inhibit qhov tsim ntawm nplai thiab av.
2. Kev tiv thaiv hluav taws xob
Txais kev tiv thaiv cathodic thiab anodic tiv thaiv. Kev tiv thaiv Cathodic yog siv cov khoom siv hluav taws xob sab nraud DC los tig cov hlau nto rau hauv cathode rau kev tiv thaiv. Txoj kev no siv hluav taws xob ntau thiab kim heev. Kev tiv thaiv Anodic yog cov txheej txheem ntawm kev sib txuas cov hluav taws xob tiv thaiv hluav taws xob rau lub zog sab nraud lub anode, tsim cov zaj duab xis passivation ntawm cov hlau saum npoo los muab kev tiv thaiv.