1. Saturated ntauwd qauv
Cov qauv ntawm cov dej kub saturated yog ib lub pej thuam ntim, lub tog raj kheej yog ua los ntawm 16 manganese steel, lub packing kev txhawb nqa ncej thiab kaum swirl daim hlau yog ua los ntawm 304 stainless hlau, lub sab saum toj dej tshuaj tsuag yeeb nkab nyob rau hauv lub saturated ntauwd yog ua los ntawm carbon steel, thiab stainless hlau hlau lim Cov khoom yog 321 stainless hlau. Tom qab cov dej kub saturated ntauwd tau muab tso rau hauv kev siv, qhov kub ntawm sab sauv ntawm qhov nruab nrab hloov hluav taws xob tau poob qis heev. Tom qab cov roj av semi-dej tawm los ntawm cov pej thuam saturated, dej nkag mus rau hauv nruab nrab ntawm lub qhov cub tawg, ua rau lub qhov cub kub poob. Thaum lub sij hawm soj ntsuam, nws tau pom tias cov dej kub saturated yeeb nkab yog corroded heev, thiab cov hlau stainless hlau lim nyob rau sab saum toj ntawm tus pej thuam yog lub mesh kuj hnyav heev corroded, nrog rau tej qhov nyob rau hauv lub mesh yog corroded.
2. Ua rau corrosion ntawm saturated ntauwd
Txij li thaum cov pa oxygen nyob rau hauv lub saturated ntauwd yog siab dua li nyob rau hauv cov dej kub ntauwd, txawm hais tias cov ntsiab lus ntawm oxygen nyob rau hauv ib tug semi-dej roj tsis siab, cov txheej txheem corrosion ntawm carbon steel nyob rau hauv aqueous tov yog feem ntau depolarization ntawm oxygen, uas nyob ntawm qhov kub thiab txias. Thaum ob qho tib si siab dua, cov nyhuv depolarization ntawm oxygen ntau dua. Cov ntsiab lus chloride ion nyob rau hauv cov tshuaj aqueous kuj yog ib qho tseem ceeb hauv corrosion. Txij li thaum cov tshuaj chloride ions tuaj yeem yooj yim rhuav tshem cov yeeb yaj kiab tiv thaiv ntawm cov hlau nto thiab ua kom cov hlau ntog, thaum cov concentration nce mus txog ib qho nqi, cov hlau tsis xeb yuav tsis tiv taus corrosion. Qhov no kuj yog vim li cas rau cov hlau stainless hlau nyob rau sab saum toj ntawm lub saturated ntauwd. Lub lim tau corroded hnyav heev. Kev hloov pauv hauv kev khiav hauj lwm siab thiab nquag nce thiab poob rau hauv cov khoom siv kub, cov kav dej, thiab fittings rau alternating pressures, uas tuaj yeem ua rau qaug zog corrosion.
3. Anti-corrosion ntsuas rau saturated ntauwd
① Thaum lub sij hawm tsim cov roj, nruj me ntsis tswj cov sulfur cov ntsiab lus nyob rau hauv cov roj semi-dej kom cov ntsiab lus tsawg li tsawg tau. Nyob rau tib lub sijhawm, tswj cov desulfurization muaj nuj nqi kom ntseeg tau tias cov ntsiab lus ntawm cov sulfur hauv cov roj av ib nrab tom qab desulfurization tsawg.
② Cov dej kub uas siv cov dej desalted los tswj qhov zoo ntawm cov dej kub circulating, txheeb xyuas tus nqi ntawm cov dej kub circulating tsis tu ncua, thiab ntxiv ib tug npaum li cas ntawm ammonia dej rau lub circulating dej kub kom nce tus nqi ntawm dej.
③ Txhim kho txoj kev khiav dej num thiab kev tso dej, sai sai tshem cov dej phwj tuaj rau hauv qhov system, thiab ntxiv cov dej tshiab uas tsis muaj dej.
④ Hloov cov yeeb nkab dej kub cov khoom siv ntawm cov saturation ntauwd nrog 304 thiab stainless hlau xaim lim cov khoom siv nrog 304 txhawm rau txuas nws lub neej kev pab cuam thiab ua kom lub sijhawm ua haujlwm ntev.
⑤ Siv cov tshuaj tiv thaiv corrosion. Vim lub siab hloov pauv siab thiab kub sib xws, cov xim tsis muaj zinc-nplua nuj yuav tsum tau siv vim nws muaj cov dej tsis zoo, tsis ntshai ntawm ion intrusion, muaj cua kub tsis kam, pheej yig, thiab yooj yim rau kev tsim.