Titanium muaj kev ruaj ntseg zoo nyob rau hauv cov dej kub uas muaj chlorides thiab sulfides, thiab yog siv dav hauv thermal fais fab nroj tsuag tshav kub exchanger txias tube. Nyias-walled titanium raj los hloov cov tooj liab-nickel alloy raj, tsis tsuas yog txhim kho lub neej kev pab cuam, thiab lub sij hawm txij nkawm kuj txo qis, cov txiaj ntsig kev lag luam tseem ceeb.
Titanium thiab titanium alloys muaj kev tiv thaiv corrosion zoo thiab tuaj yeem siv rau hauv cov kav dej steel. Txais yuav tsis muaj GGH thiab bypass seawater desulfurization system, titanium phaj siv los ua lub qhov dej ntub dej steel chimney corrosion hauv ob sab phlu.
Industrially ntshiab titanium yog ib qho thermodynamically tsis ruaj khov hlau. Tus qauv electrode muaj peev xwm rau titanium ionization yog -1.63 V yog Ti2+ tuaj yeem tsim los ntawm kev sib cais, uas ua rau titanium soluble hauv dej thiab tso tawm hydrogen. Txawm li cas los xij, titanium yog cov resistant rau corrosion nyob rau hauv ntau yam corrosive xov xwm vim hais tias nws yog heev passivated. Nws passivation tshaj li ntawm cobalt, nickel thiab stainless hlau. Nws muaj corrosion kuj zoo heev nyob rau hauv ntau reactive media, tshwj xeeb tshaj yog oxidizing media thiab chloride media, tab sis titanium tsis ruaj khov nyob rau hauv sulfuric thiab hydrochloric acids. Txhawm rau daws qhov teeb meem tsis zoo ntawm corrosion kuj ntawm cov pa titanium thiab titanium alloys kom txo tau cov xov xwm xws li sulfuric acid thiab hydrochloric acid, ntxiv ntawm molybdenum (10% ~ 32%) rau titanium alloys tuaj yeem txhim kho corrosion kuj ntawm titanium alloys. txo cov xov xwm. Qhov siab dua cov ntsiab lus molybdenum, qhov zoo dua qhov corrosion kuj, tab sis qhov nyuaj dua qhov smelting thiab ua. Kev ua kom muaj zog ntawm cov hlau yog nws cov cuab yeej tseem ceeb thiab muaj qee yam cuam tshuam rau nws daim ntawv thov. Titanium-molybdenum alloys yog qhov tsim nyog rau kev tiv thaiv corrosion ntawm steel chimneys dua li titanium ntshiab. ti-20MO thiab siab dua Ti-Mo alloys tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab tshwj xeeb tshaj yog tsim rau cov chaw tsim hluav taws xob siv dej hiav txwv desulphurization vim lawv muaj zog tiv thaiv chlorides. Qhov siab dua cov ntsiab lus molybdenum, qhov zoo dua qhov corrosion kuj, tab sis qhov nyuaj dua qhov smelting thiab ua. Qhov kev ua tau zoo tseem ceeb yog kev ntxiv dag zog ntawm cov hlau, uas cuam tshuam rau daim ntawv thov ntawm cov hlau alloy mus rau ib qho twg.Qhov corrosion kuj ntawm Ti-Mo alloy yog qhia nyob rau hauv Table 2. Titanium-molybdenum alloys yog tsim nyog rau corrosion tiv thaiv ntawm steel chimneys tshaj. ntshiab titanium. titanium-molybdenum alloys ntawm Ti-20MO thiab saum toj no tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab, vim tias lawv muaj zog tiv thaiv chlorides, lawv tshwj xeeb tshaj yog tsim rau cov nroj tsuag hluav taws xob siv seawater desulphurization. Qhov siab dua cov ntsiab lus molybdenum, qhov zoo dua qhov corrosion kuj, tab sis qhov nyuaj dua qhov smelting thiab ua. Cov cuab yeej tseem ceeb yog kev ntxiv dag zog ntawm cov hlau, uas rau qee qhov cuam tshuam rau daim ntawv thov ntawm cov alloy.Qhov corrosion kuj ntawm Ti-Mo alloys yog qhia nyob rau hauv Table 2. Titanium-molybdenum alloys yog tsim nyog tshaj li ntshiab titanium rau corrosion tiv thaiv ntawm hlau. qhov chimney. titanium-molybdenum alloys ntawm Ti-20MO thiab saum toj no tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab, vim tias lawv muaj zog tiv thaiv cov tshuaj chlorides, tshwj xeeb tshaj yog tsim rau cov nroj tsuag hluav taws xob siv seawater desulphurization. Kev tiv thaiv corrosion ntawm Ti-Mo alloys yog qhia nyob rau hauv Table 2. Ti-Mo alloys yog tsim nyog tshaj li ntshiab titanium rau corrosion tiv thaiv ntawm steel chimneys.Ti-20MO thiab saum toj no ua tau raws li qhov yuav tsum tau thiab yog tshwj xeeb tshaj yog haum rau cov fais fab nroj tsuag. siv seawater desulphurization vim lawv muaj zog tiv thaiv chlorides. Titanium-molybdenum alloys yog qhov tsim nyog tshaj li titanium ntshiab rau kev tiv thaiv corrosion ntawm steel chimneys. ti-20MO thiab siab dua Ti-Mo alloys tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab tshwj xeeb tshaj yog tsim rau cov chaw tsim hluav taws xob siv dej hiav txwv desulphurization vim lawv muaj zog tiv thaiv chlorides.
Titanium coils yog siv rau condensers nyob rau hauv ntug dej hiav txwv fais fab chaw nres tsheb. Aluminium tooj dag raj los yog B30 tooj dag dawb tau siv ua ntej xyoo 1960. Nrog rau qhov nce ntawm cov pa phem hauv dej hiav txwv, kev pabcuam lub neej tau txo qis heev. Tag nrho cov titanium condensers tau siv nyob rau hauv UK thaum ntxov li 1960s. nyias-walled (0. titanium condensers tau siv nyob rau hauv 30% ntawm cov teb chaws tsim los ntawm 1987. Kev siv cov titanium condensers yog qhov tseem ceeb vim tias cov kev xav tau siab rau kev ua haujlwm nyab xeeb thiab kev ntseeg siab ntawm nuclear fais fab nroj tsuag. Lawv feem ntau siv cov phab ntsa nyias nyias welded titanium raj thiab seamless titanium raj. Tuam Tshoj tau sim cov raj titanium hauv tsev txij li xyoo 1970s. Txij li thaum xyoo 1983, 18 tag nrho cov titanium condensers tau siv nyob rau hauv cuaj lub tshuab hluav taws xob, suav nrog Zhejiang Taizhou Fais Fab, Shanghai Jinshan Thermal Power Plant thiab Zhejiang Zhenhai Fais Fab Cog. Lawv muab 700 tons ntawm titanium raj. Cov txiaj ntsig tau txaus siab.
