Xyoo 1965, Harvey Aluminium Company ntawm Tebchaws Meskas tau tsim cov dej hiav txwv desalination cog hauv Virgin Islands. Cov kav dej kub hloov tau siv rau hauv cov nroj tsuag yog tag nrho cov seamless titanium raj nrog phab ntsa thickness ntawm 0.7 hli. Tag nrho qhov ntev ntawm cov raj yog 1.85 lab meters, hnyav kwv yees li 24 tons. Cov nroj tsuag muaj peev xwm ua tau txhua hnub ntawm 1.84 lab cubic meters ntawm dej hiav txwv.
Xyoo 1967, Matsushima Carbon Mine Co., Ltd. hauv Nyij Pooj tau ua tiav 2650t / d seawater desalination chaw. Vim yog corrosion los ntawm bromine (Br) nyob rau hauv dej hiav txwv, tooj liab alloys tsis tuaj yeem siv rau lub tshav kub hloov cov raj thiab raj phaj ntawm qhov cua condenser thiab dav hlau compressors. Titanium tau siv los hloov, thiab tsis muaj kev cuam tshuam txog kev puas tsuaj tshwm sim.
Cov dej qab zib suav txog kwv yees li 3% ntawm lub ntiaj teb cov peev txheej dej. Tau txais cov peev txheej dej los ntawm seawater desalination yog ib qho kev hloov tshiab, tshwj xeeb tshaj yog nyob rau hauv cov dej-kev nyuaj siab xws li Middle East. Seawater desalination kom tau txais cov dej tshiab tau siv txij li xyoo 1950. Los ntawm 1979, 1468 seawater desalination chaw tau tsim thoob ntiaj teb, thiab los ntawm 1993, 9014 cov chaw tau tsim nyob rau hauv 5738 qhov chaw thoob ntiaj teb. Hauv xyoo 2004, kwv yees li 15, 000 seawater desalination chaw tau tsim kho thoob ntiaj teb.
Cov txheej txheem tseem ceeb ntawm seawater desalination yog raws li nram no:
Cov txheej txheem evaporation: ib-theem flash distillation, ntau theem flash distillation, ntsug ntau qhov cuam tshuam distillation, kab rov tav ntau yam cuam tshuam distillation, submerged raj distillation, thiab vapor compression.
Membrane txoj kev: electrodialysis, thim rov qab osmosis.
Cov txheej txheem hybrid.
Ntawm cov no, txoj kev siv dav tshaj plaws yog evaporation, ua raws li rov qab osmosis, thaum electrodialysis tsis tshua siv.
Kev siv Titanium hauv Marine Civil Engineering
Qhov kev sib tw tseem ceeb uas tau ntsib los ntawm kev tsim kho marine yog qhov hnyav corrosion los ntawm cov dej hiav txwv thiab ntsev. Titanium cov ntaub ntawv yog nyiam nyob rau hauv marine kev tsim kho vim lawv zoo heev corrosion kuj. Hauv kev tsim kho marine, titanium muaj peb qhov kev siv tseem ceeb:
Corrosion tiv thaiv rau steel structural Cheebtsam.
Corrosion-resistant structural Cheebtsam.
Corrosion tiv thaiv rau cov pob zeb ua vaj tse.
titanium cov ntaub ntawv tau dhau los ua qhov kev xaiv zoo tshaj plaws rau cov qauv hauv hiav txwv, ua haujlwm rau ob lub hom phiaj: siv cov ntawv titanium los npog thaj chaw muaj kev cuam tshuam corrosion thiab siv titanium-steel composite panels rau corrosive qhov chaw ntawm marine lug.
