Njengoba sazi, phakathi kwamapuleti okushintshanisa ukushisa kwepuleti, ipuleti le-titanium lihlukile ngokumelana kwalo okuhle kakhulu nokugqwala.Futhi ekukhethweni kwe-gasket, i-viton gasket idume ngokumelana ne-asidi ne-alkali namanye amakhemikhali.Ngakho-ke ingabe zingasetshenziswa ndawonye ukuze kuthuthukiswe ukumelana nokugqwala kwesishintshi sokushisa kwamapuleti?
Eqinisweni, i-Titanium plate kanye ne-viton gasket ayikwazi ukusetshenziswa ndawonye.Kodwa kungani?Kuyisimiso sokumelana nokugqwala kwepuleti le-titanium ukuthi lezi zinto ezimbili azikwazi ukusetshenziswa ndawonye, ngoba ipuleti le-titanium kulula ukwenza ungqimba lwefilimu elivikelayo le-titanium oxide eliminyene phezulu, lolu ungqimba lwefilimu ye-oxide lungakhiwa ngokushesha ku-oxygen- equkethe imvelo ngemva kokubhujiswa.Futhi lokhu kuvumela ukubhujiswa nokulungiswa (ukuvuselela kabusha) kwefilimu ye-oxide ukuthi igcinwe esimweni esizinzile, ivikele izakhi ze-titanium ngaphakathi kwakheka ukubhujiswa okwengeziwe.
Isithombe esijwayelekile sokugqwala kwe-pitting
Nokho, lapho insimbi ye-titanium noma ingxubevange endaweni ene-fluorine, ngaphansi kokusebenza kwama-ion e-hydrogen emanzini, ama-ion e-fluoride asuka ku-viton gasket esabela ne-titanium yensimbi ukukhiqiza i-fluoride encibilikayo, eyenza i-titanium pitting.I-reaction equation imi kanje:
Ti2O3+ 6HF = 2TiF3+ 3H2O
TiO2+ 4HF = TiF4+ 2H2O
TiO2+ 2HF = TiOF2+ H2O
Ucwaningo luye lwathola ukuthi kusixazululo esine-acidic, lapho ukugxiliswa kwe-fluoride ion kufinyelela ku-30ppm, ifilimu ye-oxidation endaweni ye-titanium ingacekelwa phansi, okubonisa ukuthi ngisho noma ukuhlushwa okuphansi kakhulu kwe-ion fluoride kuzonciphisa kakhulu ukumelana nokugqwala kwamapuleti e-titanium.
Lapho insimbi ye-titanium ngaphandle kokuvikelwa kwe-titanium oxide, endaweni egqwalayo equkethe i-hydrogen ye-hydrogen evolution, i-titanium izoqhubeka imunca i-hydrogen, bese kwenzeka ukusabela kweREDOX.Bese i-TiH2 ikhiqizwa endaweni yekristalu ye-titanium, esheshisa ukugqwala kwepuleti le-titanium, yakhe imifantu futhi iholele ekuvuzeni kwesishintshi sokushisa kwamapuleti.
Ngakho-ke, ku-plate heat exchanger, i-titanium plate kanye ne-viton gasket akumele kusetshenziswe ndawonye, ngaphandle kwalokho kuzoholela ekugqwaleni nasekuhlulekeni kwesishintshi sokushisa kwepuleti.
I-Shanghai Heat Transfer Equipment Co., Ltd.(SHPHE) inokuhlangenwe nakho okucebile kwenkonzo embonini yokushisisa amapuleti, futhi inamalabhorethri ahlobene aphathekayo namakhemikhali, angakwazi ukunquma ngokushesha nangokunembile ukwakheka kwepuleti kanye ne-gasket kumakhasimende ekuqaleni kwe ukukhetha, ukuqinisekisa ukusebenza okuphephile nokuthembekile kwemishini.
Isikhathi sokuthumela: Feb-17-2022