Dab tsi yog cov yam ntxwv ntawm Teflon heat exchangers?

Teflon muaj cov txiaj ntsig zoo uas tsis tuaj yeem muab piv rau lwm cov ntaub ntawv, tshwj xeeb tshaj yog cov yam ntxwv kub thiab corrosion kuj ntawm Teflon cov ntaub ntawv, uas yog dav siv nyob rau hauv tshav kub exchangers nyob rau hauv industries xws li tshuaj engineering, pickling, electroplating, pharmaceuticals, anodizing, thiab lwm yam. / PTFE Teflon tshav kub exchanger muaj zog corrosion kuj thiab aging kuj. Vim nws qhov kub thiab txias tsis kam, nws tsim nyog rau ob qho tib si chav cua sov thiab dej kub cua sov; Teflon heat exchangers feem ntau muaj kev ua haujlwm zoo corrosion kuj. Vim tias polytetrafluoroethylene yog cov khoom siv tsis zoo, nws tuaj yeem ua haujlwm hauv yuav luag txhua qhov xov xwm tshwj tsis yog cov khoom siv fluorine, molten alkali hlau, chlorine trifluoride, thiab perfluorinated kerosene ntawm qhov kub thiab txias. Piv txwv li: concentrated hydrochloric acid, hydrofluoric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, caustic soda, sodium hypochlorite, naphthalene, benzene, xylene, aqua regia, toluene, ntau yam organic solvents, ETC. Cov khoom siv Teflon tsis nplaum, yog li nws tsis yooj yim rau scale. Vim yog cov tshuaj inertia, du nto, curvature thiab siab expansion coefficient ntawm polytetrafluoroethylene yeeb nkab, lub tshav kub hloov lwm yam nto tsis yooj yim rau scale, zoo heev txo tus naj npawb ntawm cov khoom tu, kom ntseeg tau ib tug kuj ruaj khov kub hloov coefficient thiab ntau lawm efficiency. khiav mus deb.
PTFE txias cua sov exchanger / PTFE Teflon tshav kub exchanger muaj zoo aging kuj ua tau zoo. Vim tsis muaj cov noob qoob loo photosensitive, Teflon muaj kev tiv thaiv zoo rau atmospheric aging. Hauv xov xwm corrosive heev, nws lub neej kev pabcuam yog 20-30 npaug ntawm cov hlau tsis muaj steel. Molecules tsis muaj cov noob caj noob ces, thiab ozone thiab ultraviolet rays tsis tuaj yeem cuam tshuam nrog lawv. Lawv muab tso rau hauv cov xov xwm muaj zog corrosive thiab raug rau huab cua hnyav rau lub sijhawm ntev; Teflon tshav kub exchanger muaj cov tshuaj lom neeg ruaj khov vim nws qhov zoo ntawm kev tiv thaiv corrosion, hnav tsis kam, thiab tiv thaiv plua plav. Cov qauv qauv molecular yog cov kab hluav taws xob uas muaj qhov sib xyaw ua tiav, tsis muaj ceg saw, tsis muaj polarity, thiab cov khoom siv tshuaj muaj zog heev. Tom qab kev sib cuag mus ntev nrog cov kua qaub, cov hauv paus, oxidants, oxides, aqua regia, thiab lwm yam kev daws teeb meem, nws muaj kev nyab xeeb thiab nyab xeeb. Nws tuaj yeem tiv taus cov dej kub hnyiab nrog qhov siab ntawm 0-99 feem pua, thiab cov cuab yeej siv lub neej ntev txog 8-10 xyoo.