Sezvatinoziva, pakati pemahwendefa ekupisa kupisa kweplate, titanium ndiro yakasarudzika nekuda kwekupokana kwayo kwekuora. Uye mukusarudzwa kwegasket, viton gasket yakakurumbira nekupikisa acid uye alkali nemamwe makemikari. Saka vanogona kushandiswa pamwechete kuvandudza kushorwa kwekupokana kweplate heat exchanger?
Muchokwadi, Titanium ndiro uye viton gasket haigone kushandiswa pamwechete. Asi nei? Iro corrosion resistance musimboti wetitanium plate kuti zvinhu zviviri izvi hazvigone kushandiswa pamwechete, nekuti titanium plate iri nyore kuumba denderedzwa retitanium oxide inodzivirira firimu pamusoro, iyi layer ye oxide film inogona kukurumidza kuumbwa munzvimbo ine okisijeni mushure mekuparadzwa. Uye izvi zvinobvumira kuparadzwa uye kugadzirisa (kudzoreredza) kweiyo oxide firimu kuti ichengetwe munzvimbo yakagadzikana, kuchengetedza titanium zvinhu mukati mekuita kumwe kuparadzwa.
Mufananidzo wepitting corrosion
Zvisinei, kana titanium simbi kana alloy munzvimbo ine fluorine-ine, pasi pekuita kwehydrogen ions mumvura, fluoride ions kubva viton gasket inobatana nesimbi titanium kugadzira soluble fluoride, iyo inoita kuti titanium pitting. Iyo reaction equation ndeiyi inotevera:
Ti2O3+ 6HF = 2TiF3+ 3H2O
TiO2+ 4HF = TiF4+ 2H2O
TiO2+ 2HF = TiOF2+ H2O
Zvidzidzo zvakawana kuti muacidic solution, kana fluoride ion concentration inosvika 30ppm, iyo oxidation firimu iri patitanium surface inogona kuparadzwa, zvichiratidza kuti kunyangwe kuderera kwakanyanya kweiyo fluoride ion kuchaderedza zvakanyanya kushorwa kwetitanium plates.
Kana titanium simbi isina kuchengetedzwa kwetitanium oxide, munzvimbo inoora ine hydrogen yehydrogen evolution, titanium icharamba ichitora hydrogen, uye REDOX reaction inoitika. Ipapo TiH2 inogadzirwa pane titanium crystal pamusoro, iyo inomhanyisa kukora kwetitanium plate, ichigadzira makatsemuka uye ichitungamira mukudonha kweplate heat exchanger.
Naizvozvo, mundiro yekupisa exchanger, titanium ndiro uye viton gasket haifanirwe kushandiswa pamwechete, zvikasadaro zvinotungamira mukuora uye kutadza kweplate heat exchanger.
Shanghai Heat Transfer Equipment Co., Ltd.(SHPHE) ine ruzivo rwakapfuma rwesevhisi muindasitiri yekupisa kupisa kwendiro, uye zvakare ine hukama hwemuviri nemakemikari marabhoritari, ayo anogona kukurumidza uye nemazvo kuona zvinhu zveplate uye gasket kune vatengi padanho rekutanga rekusarudzwa, kuve nechokwadi chekushanda kwakachengeteka uye kwakavimbika kwemidziyo.
Nguva yekutumira: Feb-17-2022