Kev tshawb fawb thiab kev sib tham txog kev tshwj xeeb los tiv thaiv corrosion txheej rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob
Tso lus
Kev tshawb fawb thiab kev sib tham txog kev tshwj xeeb los tiv thaiv corrosion txheej rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob
Lub tshav kub exchanger yog ib qho khoom siv uas hloov ib feem ntawm cov cua sov los ntawm cov kua dej kub mus rau cov kua dej txias,
Kuj tseem hu ua lub tshav kub exchanger. Cov khoom siv hluav taws xob sib txawv yog cov cuab yeej siv hauv ntau qhov kev lag luam xws li tshuaj lom neeg, roj av, hluav taws xob, khoom noj, thiab lwm yam, thiab ua lub luag haujlwm tseem ceeb hauv kev tsim khoom. Hauv kev tsim tshuaj lom neeg, cov khoom siv hluav taws xob tuaj yeem siv los ua cov cua sov, cua txias, condensers, evaporators, thiab reboilers, thiab siv ntau dua. Muaj ntau ntau hom kev sib hloov cua sov, tab sis raws li cov hauv paus ntsiab lus thiab cov txheej txheem ntawm kev sib pauv cua sov ntawm cov dej txias thiab kub, lawv tuaj yeem muab faib ua peb pawg: hom phab ntsa, hom sib xyaw, thiab cov khoom siv cua sov. Raws li kev tsim kho nyob rau hauv lub sijhawm ntev ntawm Beijing Zhisheng Weihua Chemical Engineer, feem ntau cov khoom siv hluav taws xob yog siv rau hauv qhov kub thiab txias (siab lossis pH) ib puag ncig, thiab corrosion ntawm cov qauv yog hnyav heev. Kev siv tus nqi ntawm cov khoom siv hluav taws xob sib pauv ncaj qha cuam tshuam rau kev ua haujlwm thiab tus nqi ntawm cov txheej txheem refining. Raws li kev txheeb cais, cov khoom siv hluav taws xob sib pauv tau kwv yees li 1/5 ntawm kev nqis peev hauv kev tsim kho tshuaj. Yog li ntawd, kev siv tus nqi thiab lub neej ntev ntawm cov khoom siv hluav taws xob yog qhov tseem ceeb uas tsim nyog kawm. Los ntawm qhov kev xav ntawm qhov ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob, corrosion yog qhov tseem ceeb heev, thiab corrosion hauv cov khoom siv hluav taws xob yog dav dav. Kev daws qhov teeb meem corrosion zoo yog sib npaug los daws cov hauv paus hauv paus ntawm kev puas tsuaj rau cov khoom siv hluav taws xob.
Qhov corrosion ntawm tshav kub exchangers feem ntau yog hais txog corrosion ntawm daim hlau. Uniform corrosion thiab localized corrosion yog ob lub ntsiab ntawm corrosion ntawm stainless hlau daim hlau hauv phaj kub exchangers. impurities, ntsev, gases, thiab kab mob nyob rau hauv nruab nrab ntawm lub tshav kub exchanger yuav ua rau corrosion rau lub raj phaj thiab welds. Kev tshawb fawb tau pom tias cov dej muaj dej, txawm tias dej tshiab los yog dej hiav txwv, muaj ntau yam ions thiab yaj cov pa oxygen, cov kev hloov pauv ntawm cov tshuaj chloride ions thiab cov pa oxygen ua lub luag haujlwm tseem ceeb hauv kev xeb ntawm cov hlau. Tsis tas li ntawd, qhov nyuaj ntawm cov qauv hlau kuj tuaj yeem cuam tshuam rau corrosion morphology. Corrosion uas yog concentrated nyob rau hauv ib tug me me cov ntsiab lus ntawm cov hlau nto thiab muaj ib tug ntau dua qhov tob yog hu ua pitting corrosion, kuj hu ua me me qhov corrosion los yog pitting corrosion. Kev xeb loj heev tuaj yeem tshwm sim hauv qhov khoob thiab npog thaj chaw ntawm cov hlau nto. Yog li ntawd, qhov corrosion ntawm weld nruab nrab ntawm lub raj phaj thiab kem yog feem ntau pitting corrosion thiab crevice corrosion. Los ntawm sab nraud, yuav muaj ntau yam khoom siv corrosion thiab tso rau ntawm qhov chaw ntawm lub raj phaj, muab faib ua npuas ntawm ntau qhov sib txawv. Thaum siv dej hiav txwv ua qhov nruab nrab, galvanic corrosion kuj tuaj yeem tshwm sim. Bimetal corrosion kuj yog ib qho tshwm sim ntawm lub raj phaj corrosion. Lub anti-corrosion txheej kev tshawb fawb engineer ntawm Beijing Zhisheng Weihua Chemical Co., Ltd. tau sau ntev txog cov hom corrosion nyob rau hauv tshav kub exchangers, nrog rau tej lub zos corrosion xws li crevice corrosion, kev nyuaj siab corrosion, thiab hnav corrosion. Nyob rau hauv cov tshuaj los yog electrochemical kev txiav txim ntawm ib puag ncig nruab nrab, thiab feem ntau nyob rau hauv ua ke nrog rau lub cev, mechanical, los yog lom yam, hlau puas tshwm sim, uas yog, kev puas tsuaj los ntawm ib puag ncig nyob rau hauv uas nws nyob.
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