Njengoba sazi, phakathi kwamapuleti e-plate heat exchanger, ipuleti le-titanium lihlukile ngokumelana kwalo okuhle kakhulu nokugqwala. Futhi ekukhetheni i-gasket, i-viton gasket idume ngokumelana ne-asidi kanye ne-alkali kanye namanye amakhemikhali. Ngakho-ke zingasetshenziswa ndawonye ukuthuthukisa ukumelana nokugqwala kwe-plate heat exchanger?
Eqinisweni, ipuleti le-Titanium kanye ne-gasket ye-viton azikwazi ukusetshenziswa ndawonye. Kodwa kungani? Yisimiso sokumelana nokugqwala sepuleti le-titanium ukuthi lezi zinto ezimbili azikwazi ukusetshenziswa ndawonye, ngoba ipuleti le-titanium kulula ukwakha ungqimba lwefilimu yokuvikela i-titanium oxide ebanzi ebusweni, lolu ngqimba lwefilimu ye-oxide lungakhiwa ngokushesha endaweni equkethe umoya-mpilo ngemva kokubhujiswa. Futhi lokhu kuvumela ukubhujiswa nokulungiswa (ukuvuselelwa kabusha) kwefilimu ye-oxide ukuthi kugcinwe kusesimweni esizinzile, kuvikelwe izakhi ze-titanium ngaphakathi kwefomu ukubhujiswa okwengeziwe.
Isithombe esijwayelekile sokugqwala kwemigodi
Kodwa-ke, lapho insimbi noma i-alloy ye-titanium endaweni equkethe i-fluorine, ngaphansi kwesenzo sama-ion e-hydrogen emanzini, ama-ion e-fluoride avela ku-viton gasket asabela ne-titanium yensimbi ukuze akhiqize i-fluoride encibilikayo, okwenza i-titanium pitting. I-equation yokusabela imi kanje:
I-Ti2O3+ 6HF = 2TiF3+ 3H2O
I-TiO2+ 4HF = I-TiF4+ 2H2O
I-TiO2+ 2HF = I-TiOF2+ H2O
Izifundo zithole ukuthi esixazululweni se-acidic, lapho ukuhlushwa kwe-ion ye-fluoride kufinyelela ku-30ppm, ifilimu ye-oxidation ebusweni be-titanium ingabhujiswa, okubonisa ukuthi noma ukuhlushwa okuphansi kakhulu kwe-ion ye-fluoride kuzonciphisa kakhulu ukumelana nokugqwala kwamapuleti e-titanium.
Uma insimbi ye-titanium ingavikelwe yi-titanium oxide, endaweni egqwalisayo equkethe i-hydrogen yokuvela kwe-hydrogen, i-titanium izoqhubeka nokumunca i-hydrogen, bese kwenzeka ukusabela kwe-REDOX. Ngemuva kwalokho i-TiH2 ikhiqizwa ebusweni bekristalu ye-titanium, okusheshisa ukugqwala kwepuleti le-titanium, kwakha imifantu futhi kuholele ekuvuzeni kwe-plate heat exchanger.
Ngakho-ke, ku-plate heat exchanger, i-titanium plate kanye ne-viton gasket akumele kusetshenziswe ndawonye, ngaphandle kwalokho kuzoholela ekugqwaleni nasekuhlulekeni kwe-plate heat exchanger.
I-Shanghai Heat Transfer Equipment Co.,Ltd. (SHPHE) inolwazi oluningi lwesevisi embonini yokushintshanisa ukushisa kwamapuleti, futhi inezindawo zokucwaninga eziphathelene nezinto ezibonakalayo nezamakhemikhali, ezinganquma ngokushesha nangokunembile izinto zepuleti ne-gasket kumakhasimende asesigabeni sokuqala sokukhetha, ukuqinisekisa ukusebenza okuphephile nokuthembekile kwemishini.
Isikhathi sokuthunyelwe: Feb-17-2022