Nyob rau hauv cov yeeb nkab sib xyaw, cov hlau tsis xeb-tiv taus tsim cov txheej txheem ua tiav ntawm cov pa roj carbon monoxide lossis cov hlau tsis tshua muaj hlau (feem ntau hu ua "rov qab steel"). Feem ntau hais lus, kev siv cov kav dej sib xyaw lossis bimetal lined tuaj yeem siv nyiaj txiag siv CRA cov ntaub ntawv kim, thiab tau txais kev saib xyuas thiab kev thov txawv teb chaws. Koj puas paub dab tsi clad steel kav siv rau?
1. Casing rau kev thauj mus los roj thiab roj
Cov yeeb nkab sab hauv yog ua los ntawm cov khoom siv hlau tsis zoo xws li Incoloy625 thiab Incoloy825 kom ntseeg tau tias cov yeeb nkab tsis muaj zog. Cov yeeb nkab sab nrauv feem ntau yog ua los ntawm ×, x50, x60, x70, A335-P22 thiab lwm yam ntaub ntawv los xyuas kom meej lub zog ntawm cov yeeb nkab. Lub koom haum American Petroleum (API) tau tsim cov qauv rau cov kav dej sib xyaw rau cov kav dej, uas suav nrog API 5LD: Cr-Mo steel, super 13Cr, G3, C028 thiab lwm cov kav dej roj thiab cov kav dej nickel-based alloy coated xws li 825,028.
2. Boiler
Cov kav hlau steel rau cov khoom siv hluav taws xob yuav tsum muaj qhov kub thiab txias zog nyob rau hauv chav dej ntawm 650 MPa thiab 35 MPa, zoo heev saum npoo kub thiab corrosion tsis kam, thiab sab hauv qhov chaw tiv thaiv dej vapor oxidation.
Sumitomo Hlau Corporation ntawm Nyij Pooj tau xaiv SUS310S, 35Cr-55Ni, thiab 40Cr-55Ni raws li cov txheej txheem sab nraud thiab 17-14CuMo thiab loy800 muaj cov raj sab hauv los tsim cov txheej txheem ultra-supercritical boiler superheater cladding raj.
Sweden lub tuam txhab Sandvik Steel tau ua tiav cov pa roj carbon steel raws li cov yeeb nkab sab hauv thiab sanmicro28 raws li cov yeeb nkab sab nrauv, uas muaj kev tiv thaiv corrosion zoo. Cov kav hlau coated uas tsim los ntawm Sandvik tsis tas yuav muaj kev hloov pauv rau lub boiler qauv tsim thiab tuaj yeem siv ncaj qha.
3. Cov khib nyiab khib nyiab
Coated steel kav rau khib nyiab incinerators. Lub raj sab nraud tuaj yeem ua los ntawm Sanicro65 alloy, thiab lub raj sab hauv tuaj yeem ua los ntawm cov hlau los yog chromium-molybdenum steel, uas tiv taus kev ntxhov siab corrosion. Tebchaws Europe thiab Tebchaws Meskas tau siv 2 lab metres ntawm cov kav dej sib xyaw ua ke txij li thawj qhov kev teeb tsa ntawm cladded tube incinerator superheaters thiab cov kav dej phab ntsa hauv xyoo 1971.
4. Thaum tshav kub kub exchanger
Coated steel kav rau cov cua kub exchangers yuav tsum tau zoo thermal conductivity thiab tej lub zog thiab corrosion kuj.
Lub cladding yeeb nkab uas tsim los ntawm Sandvik siv high-alloy nickel-chromium alloy 800 raws li lub puab raj thiab low-alloy steel ASTM A213 Ti2 raws li cov txheej txheem. Cov yeeb nkab cladding tsim los ntawm Nyiv NKK Tuam Txhab siv API 5L-16MnV steel rau cov yeeb nkab sab nrauv thiab NIC42 steel rau cov yeeb nkab sab hauv.
5. Siv nyob rau hauv hnav-resistant steel
Cov yeeb nkab sab nraud ntawm cov yeeb nkab coated steel ua los ntawm lub tuam txhab Nyij Pooj yog ua los ntawm SUS316L corrosion-resistant steel thiab cov yeeb nkab sab hauv yog ua los ntawm Stellite No12 alloy. Nws tseem yog cov khoom tshiab tom qab 4 xyoo. Nws kuj tau siv tau zoo nyob rau hauv pneumatic conveying pipelines ntawm lwm yam micro-hmoov hais, thiab qhov kev thov yog nce.
