Kev Kho Mob Nruab Nrab Ntawm Anticorrosion Tshuab
Nov 11, 2020
Hloov qhov xwm txheej ntawm xeb nruab nrab los tiv thaiv lossis txo qhov tsis muaj xeb ntawm qhov nruab nrab rau cov khoom siv hlau lossis khoom siv. Txoj kev no tsuas yog siv thaum lub ntim ntawm qhov corrosive nruab nrab yog txwv. Kev kho ib puag ncig muaj peev xwm raug faib ua ob pawg:
Tshem tawm lossis txo cov teeb meem tsis zoo hauv kev tshaj tawm Cov txheej txheem sib xws yog raws li hauv qab no: ① dehumidification thiab cov plua plav pov tseg kom tshem tawm cov khoom ua rau muaj kev phom sij xws li chav, sulfur dioxide thiab hmoov av hauv huab cua; ② deoxidization yog lub thev naus laus zis ntawm lub rhaub dej kho, uas tuaj yeem tswj tau qhov dej tsis muaj zog ntawm boiler system; Al qhov tsim nyog: ua ntej ua kom zoo, ntau cov tshuaj ntsev (xws li magnesium chloride) uas muaj nyob hauv cov roj av yuav tsum raug txo kom qis mus txog qib uas tsim nyog txhawm rau txhawm rau txo cov xeb ntawm cov roj kho cov khoom siv. Nws yog cov txheej txheem tseem ceeb ntawm kev kho cov roj.
Ntxiv cov tshuaj tiv thaiv corrosion, ntxiv qhov me me ntawm cov khoom hauv qhov nruab nrab corrosion tuaj yeem txo qhov txo qhov corrosion. Corrosion inhibitors tau muab faib ua inorganic thiab organic. Inorganic corrosion inhibitors suav nrog nitrate, nitrite, chromate, dichromate thiab lwm yam kev tiv thaiv oxidation; phosphate, silicate, carbonate thiab lwm yam tsis yog oxidative corrosion inhibitors. Cov tshuaj tiv thaiv kev ua kom tsis haum organic suav nrog amines, aldehydes, heterocyclic compounds, imidazolines thiab sulfides organic. Txawm hais tias cov qauv hauv tshuaj lom neeg ntawm cov tshuaj tiv thaiv kab mob sib txawv, lawv cov kev txwv hauv siab muaj ntau hauv cov xov xwm acidic. Cov nyhuv ntawm kev txhim kho corrosion inhibitor yog ze rau ntau yam tsis dhau thiab cov xwm txheej ntawm qhov nruab nrab corrosive, yog li nws yuav tsum tau xaiv nruj me ntsis. Qee qhov tshuaj tiv thaiv kev xeb yog lom thiab tsis tuaj yeem siv hauv qhov nruab nrab ntsig txog kev npaj khoom noj. Tsis tas li ntawd, vapor theem inhibitors (xws li ntawv antirust) kuj tseem siv dav los tiv thaiv atmospheric corrosion ntawm cov khoom lag luam hlau.
