Qhov zoo ntawm chemical cia tanks

1. Lub cev tiv thaiv corrosion ntawm cov tshuaj cia tank. Ua kom zoo sib xws nrog cov xim uas hnov ​​​​mob nrog cov roj-raws li cov yeeb yaj kiab-tsim cov neeg ua haujlwm, cov txheej txheem zoo tiv thaiv corrosion tuaj yeem tau los txhim kho lub cev tiv thaiv corrosion. Piv txwv li, cov xim uas muaj cov hmoov lead ua rau cov roj ua cov hmoov lead ua cov hmoov lead ua rau cov txheej txheem tiv thaiv corrosion, yog li txo qhov nkag mus ntawm cov dej thiab cov pa phem. Phosphate pigments yog hydrolyzed los tsim insoluble yooj yim acid ntsev, uas tuaj yeem thaiv cov pinholes hauv cov txheej tiv thaiv corrosion. Hlau oxides lossis nplai zoo li mica hmoov, txhuas hmoov, iav flakes thiab lwm yam xim tuaj yeem txo cov permeability ntawm cov txheej tiv thaiv corrosion thiab ua si lub cev tiv thaiv corrosion.

2. Tshuaj tiv thaiv corrosion nyhuv. Thaum muaj teeb meem acidic thiab alkaline tshuaj nkag mus rau hauv cov txheej txheem tiv thaiv corrosion, lawv tuaj yeem nruab nrab thiab hloov mus rau hauv cov khoom tsis zoo, uas kuj yog ib txoj hauv kev zoo los tiv thaiv corrosion. Tshwj xeeb, kev xaiv ntse ntawm zinc oxide, aluminium hydroxide, barium hydroxide thiab lwm yam amphoteric compounds tau yooj yim ua kom tiav qhov nruab nrab ntawm acidic los yog alkaline teeb meem tshuaj thiab ua rau cov nyhuv antiseptic, los yog nws tuaj yeem hnov ​​​​mob nrog dej thiab kua qaub los tsim cov tshuaj alkaline. Cov tshuaj alkaline no yog adsorbed rau saum npoo ntawm cov hlau kom cov alkaline nto, thiab cov hlau tsis yooj yim rau xeb hauv ib puag ncig alkaline. 3. Cov nyhuv electrochemical los tiv thaiv corrosion ntawm chemical cia tso tsheb hlau luam. Thaum cov dej noo thiab oxygen nkag los ntawm cov pinholes ntawm txheej dhau los ntawm cov txheej txheem tiv thaiv corrosion, lawv hnov ​​​​mob nrog cov xim pleev xim rau hauv cov txheej tiv thaiv corrosion los tsim cov ions tiv thaiv corrosion. Qhov no cov dej noo nplua nuj nyob rau hauv anti-corrosion ions nce mus txog cov hlau nto, passivates lub steel nto (nce lub peev xwm), thiab tiv thaiv cov dissolution ntawm hlau ions. Chromate pigments muaj cov yam ntxwv no. Nws muaj peev xwm siv cov hlau uas muaj peev xwm qis dua li cov hlau los tiv thaiv cov hlau. Piv txwv li, zinc-nplua nuj xim yog vim hais tias cov electrode muaj peev xwm ntawm zinc yog qis dua cov hlau, uas ua raws li ib tug sacrificial anode thiab ua rau cov hlau tsis yooj yim corroded.

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