Dab tsi yog qhov cuam tshuam ntawm cov khoom nruab nrab ntawm qhov corrosion ntawm 316 stainless hlau cua sov raj?

# Dab tsi yog qhov cuam tshuam ntawm cov khoom nruab nrab ntawm qhov corrosion ntawm 316 stainless hlau cua sov raj? Residual mycelium, protein precipitates, thiab inorganic khoom yog nquag muaj nyob rau hauv fermentation kab lis kev cai xov xwm uas yog tsim thaum lub sij hawm lub metabolism ntawm lub strain. Cov khib nyiab no tsis tu ncua scour thiab abrade nto ntawm 316 stainless hlau cua sov raj hauv cov raj xa dej, ua rau kev puas tsuaj tag nrho ntawm chromium-nplua nuj zaj duab xis passive thiab acceleration tseem ceeb ntawm pitting corrosion. Kev xau ntxov ntawm cov cua sov raj welds hauv ib xyoos ntawm kev ua haujlwm yog qhov tshwm sim ntawm qhov tseeb tias ntau lub rooj cob qhia tsuas yog saib xyuas cov ntsuas kub ntawm cov tshuaj chloride thiab alkali, tsis suav nrog cov khoom tawg. Kev sib raug zoo ntawm corrosion acceleration℃thiab particle cov ntsiab lus yog quantified nyob rau hauv cov lus tom ntej.|Loj Concentration ntawm Khoom Particles|Qhov Chaw Loj Loj|Passive zaj duab xis puas theem|Corrosion Rate Kev Loj Hlob Ntau|Pom zoo tswj lub tswv yim|| ----|{{31}---|----|----|----|| Tsawg dua 0.1 g / L|Me me abrasion ntawm tus raj lub cev|Me ntsis nyias nyias zaj duab xis|1.2 npaug ntawm tus qauv tus nqi|Txhua lub limtiam yooj yim pipeline flushing|| 0.1–0.5 g/L|Pom tseeb hnav ntawm lub luj tshib thiab vuam pob qij txha|Local zaj duab xis tev, micro-pom hlau|2–3 lub sij hawm tus qauv tus nqi|Nruab 100-mesh pem hauv ntej lim rau nruab nrab ncig|| 0.5–1.0 g/L|Sib sib zog nqus abrasion grooves ntawm cua sov seem|Nruam zaj duab xis poob ntawm qhov chaw ruaj khov|4–6 lub sij hawm tus qauv tus nqi|Ob lub lis piam ultrasonic phab ntsa thickness scanning|| Tshaj 1.0 g / L|Hnyav groove-zoo li abrasion ntawm welds|Loj raug hlau cheeb tsam tsis muaj kev tiv thaiv|8–10 lub sij hawm tus qauv tus nqi|Nce ob-theem filtration thiab shorten overhaul voj voog|Lub chromium oxide passive zaj duab xis ntawm 316 stainless hlau tsuas yog ob peb microns tuab, nrog kev ntxhib los mos thiab tsis muaj zog tiv thaiv kev ua haujlwm. Cov yeeb yaj kiab tiv thaiv ntawm lub raj phab ntsa yog perpetually scraped tawm los ntawm cov neeg kho tshuab kev sib txhuam thaum cov khoom siv ntws nrog qhov nruab nrab ntawm kev kub ceev. Pipeline luj tshib thiab weld junctions yog thawj qhov chaw uas cov zaj duab xis passive kiag li detaches vim cov kua turbulence, raws li lawv raug rau qhov siab tshaj plaws particle. Thaum raug cov hlau tshiab liab qab, chloride ions nyob rau hauv nruab nrab tam sim ntawd pawg los tsim electrochemical corrosion hlwb, thiab pitting pits nthuav dav sai nyob rau hauv high-temperature cua sov tej yam kev mob. Qhov sib xyaw ua ke ntawm cov tshuaj corrosion thiab mechanical abrasion yog qhov cuam tshuam ntau dua li ib qho piv txwv ntawm chloride yaig. Tus qauv chloride pib ntawm 50 ppm tso cai rau kev ua haujlwm ruaj khov ntawm 316 stainless hlau rau lub sijhawm 2 txog 3 xyoos yam tsis muaj kev cuam tshuam los ntawm cov khoom siv. Tus nqi corrosion yuav nce, thiab zais pitting yuav tshwm sim nyob rau hauv welds nyob rau hauv ib nrab ib xyoo yog hais tias cov khoom particle concentration ntau tshaj 0.5 g / L, txawm lub nruj tswj ntawm chloride hauv qab 40 ppm. Raws li qhov tshwm sim ntawm decomposition ntawm residual organic tebchaw uas yog affixed rau abrasion grooves, acidic tshuaj yuav raug tsim, uas yuav exacerbate lub zos corrosion thiab tsim nyob rau hauv lub pits uas nyuaj rau nrhiav tau. Txoj kev ncaj ncees tshaj plaws ntawm kev txo cov khoom tawg yog siv cov khoom siv hauv ntej-kawg pom. Feem ntau ntawm mycelium thiab nag lossis daus tuaj yeem cuam tshuam los ntawm kev txhim kho ntau txheej mesh pom ntawm qhov nkag ntawm lub voj voog cua sov.