Izindaba

I-PET (i-polyethylene terephthalate) iyi-polymer ye-thermoplastic esetshenziswa kabanzi ekusetshenzisweni okuhlukahlukene, njengokupakisha, izindwangu, kanye nobunjiniyela. I-PET inezinto ezinhle kakhulu zokusebenzisa imishini, ezishisayo, nezokubona, futhi ingagaywa kabusha futhi isetshenziselwe imikhiqizo emisha. Kodwa-ke, i-PET iphinde ibe yinto ye-hygroscopic, okusho ukuthi idonsa umswakama emvelweni, futhi lokhu kungathinta ikhwalithi nokusebenza kwayo. Umswakama ku-PET ungabangela i-hydrolysis, okuwukusabela kwamakhemikhali okuphula amaketanga e-polymer futhi kunciphise i-viscosity yangaphakathi (IV) yezinto. I-IV isilinganiso sesisindo samangqamuzana kanye nezinga le-polymerization ye-PET, futhi iyinkomba ebalulekile yamandla, ukuqina, nokucutshungulwa kwempahla. Ngakho-ke, kubalulekile ukomisa futhi ucwebise i-PET ngaphambi kokukhipha, ukususa umswakama futhi uvimbele ukulahlekelwa kwe-IV.

I-infrared crystal dryer PET Granulationiyinoveli nobuchwepheshe obusha obusebenzisa ukukhanya kwe-infrared (IR) ukuze kome futhi kucwebezele ama-flakes e-PET esinyathelweni esisodwa, ngaphambi kokuwaphakela i-extruder ukuze aqhubeke nokusebenza. Ukukhanya kwe-IR kuwuhlobo lwemisebe kagesi enobude obuphakathi kwama-microns angu-0.7 no-1000, futhi ingamuncwa i-PET nama-molecule amanzi, iwabangele ukuba adlidlize futhi akhiphe ukushisa. Ukukhanya kwe-IR kungangena kuma-flakes e-PET futhi kuwashise kusuka ngaphakathi, okuholela ekomisweni okushesha nangempumelelo kakhudlwana kanye nokucwebezela kunezindlela ezivamile, njengokumisa komoya oshisayo noma i-vacuum.

I-PET Granulation ye-infrared crystal dryer inezinzuzo ezimbalwa ngaphezu kwezindlela zokomisa zendabuko nezindlela zokucwebezela, njenge:

• Isikhathi esincishisiwe sokumisa ne-crystallization: Ukukhanya kwe-IR kungomisa futhi kufake ama-PET ama-flakes emaminithini angu-20, uma kuqhathaniswa namahora amaningana adingwa izindlela ezivamile.

• Ukusetshenziswa kwamandla okwehlisiwe: Isibani se-IR singomisa futhi sicwebezele ama-PET flakes ngokusetshenziswa kwamandla okungu-0.08 kWh/kg, uma kuqhathaniswa no-0.2 kuya ku-0.4 kWh/kg kudingwa izindlela ezivamile.

• Okuqukethwe umswakama okwehlisiwe: Ukukhanya kwe-IR kungomisa futhi kucwebezele ama-flakes e-PET kumswakama wokugcina ongaphansi kuka-50 ppm, uma kuqhathaniswa no-100 kuya ku-200 ppm ozuzwe ngezindlela ezivamile.

• Ukulahlekelwa kwe-IV okuncishisiwe: Ukukhanya kwe-IR kungomisa futhi kufake ama-PET ama-flakes nge-IV encane yokulahlekelwa kwe-0.05, uma kuqhathaniswa nokulahlekelwa kwe-0.1 kuya ku-0.2 IV okubangelwa izindlela ezivamile.

• Ukuminyana kwenqwaba: Ukukhanya kwe-IR kungakhuphula ukuminyana kwenqwaba yama-PET flakes ngo-10 kuya ku-20%, uma kuqhathaniswa nokuminyana kwasekuqaleni, okuthuthukisa ukusebenza kokuphakelayo kanye nokuphumayo kwe-extruder.

• Ikhwalithi yomkhiqizo ethuthukisiwe: Ukukhanya kwe-IR kungomisa futhi kucwebezele ama-flakes e-PET ngaphandle kokubangela ukuphuzi, ukuwohloka, noma ukungcoliswa, okuthuthukisa ukubukeka kanye nezakhiwo zemikhiqizo yokugcina.

Ngalezi zinzuzo, i-infrared crystal dryer PET Granulation ingathuthukisa ukusebenza kahle kanye nekhwalithi ye-PET extrusion, futhi ingahlangabezana nezidingo zezicelo zebanga lokudla.

Inqubo ye-Infrared crystal dryer PET Granulation ingahlukaniswa ngezinyathelo ezintathu eziyinhloko: ukuphakela, ukomisa nokucwenga, kanye nokukhipha.

Ukondla

Isinyathelo sokuqala se-infrared crystal dryer PET Granulation siyaphakela. Kulesi sinyathelo, ama-PET flakes, angaba yizintombi noma agaywe kabusha, afakwa esomisini se-IR ngesiphakeli sesikulufu noma i-hopper. Ama-flakes e-PET angaba nomswakama wokuqala ongafika ku-10,000 kuya ku-13,000 ppm, kuye ngomthombo nezimo zokugcina. Izinga lokudla kanye nokunemba yizici ezibalulekile ezithinta ukusebenza kokoma nokucwebezela kanye nekhwalithi yomkhiqizo.

Ukomisa kanye Nokucwebezelisa

Isinyathelo sesibili se-infrared crystal dryer PET Granulation siyomisa futhi siyacwebezela. Kulesi sinyathelo, ama-flakes e-PET avezwa ekukhanyeni kwe-IR ngaphakathi kwesigubhu esijikelezayo, esinesiteshi esivunguzayo nama-paddles ngaphakathi kwaso. Ukukhanya kwe-IR kukhishwa ibhange elimile lama-IR emitters, atholakala maphakathi nesigubhu. Ukukhanya kwe-IR kunobude begagasi obungu-1 kuya ku-2 microns, obushuniswe ku-spectrum yokumuncwa kwe-PET namanzi, futhi kungangena kufikela ku-5 mm kuma-PET flakes. Ukukhanya kwe-IR kushisisa ama-flakes e-PET kusukela ngaphakathi, okwenza ama-molecule amanzi ahwamuke futhi ama-molecule e-PET adlidlize futhi ahlele kabusha esakhiweni sekristalu. Umhwamuko wamanzi ukhishwa wumfudlana womoya ozungezile, ogeleza esigubhu bese ususa umswakama. Isiteshi esivunguzayo kanye nama-paddles adlulisa ama-flakes e-PET eduze kwe-eksisi yesigubhu, eqinisekisa ukuchayeka okufanayo nokufanayo ekukhanyeni kwe-IR. Inqubo yokomisa kanye nekristalu ithatha cishe amaminithi angu-20, futhi iphumela ekujuleni kokugcina komswakama ongaphansi kuka-50 ppm kanye nokulahlekelwa okuncane kwe-IV kuka-0.05. Inqubo yokomisa kanye ne-crystallizing iphinde ikhulise ukuminyana kwe-PET flakes ngo-10 kuya ku-20%, futhi ivimbele ukuphuzi kanye nokuwohloka kwezinto.

Iyakhipha

Isinyathelo sesithathu nesokugcina se-Infrared crystal dryer PET Granulation siyaphuma. Kulesi sinyathelo, ama-PET flakes omisiwe futhi acwebezelisiwe anikezwa i-extruder, encibilikisa, yenza i-homogenizes, futhi ilolonge impahla ibe yimikhiqizo efiselekayo, njengama-pellets, imicu, amafilimu, noma amabhodlela. I-extruder ingaba isikulufu esisodwa noma uhlobo lwe-twin-screw, kuye ngokucaciswa komkhiqizo kanye nezithasiselo ezisetshenzisiwe. I-extruder ingabuye ifakwe i-vacuum vent, engasusa noma yimuphi umswakama osele noma ukuguquguquka ekuncibilikeni. Inqubo yokukhipha ithonywa isivinini sesikulufu, ukumisa isikulufu, izinga lokushisa lomgqomo, i-die geometry, kanye ne-melt rheology. Inqubo yokukhipha kumele ithuthukiswe ukuze kuzuzwe i-extrusion ebushelelezi futhi ezinzile, ngaphandle kwamaphutha, njengokuphuka kwe-ncibilika, ukukhukhumala kokufa, noma ukungazinzi kobukhulu. Inqubo yokukhipha ingalandelwa inqubo yangemva kokwelashwa, njengokupholisa, ukusika, noma ukuqoqa, kuye ngohlobo lomkhiqizo kanye nempahla yokusebenza engezansi.

Isiphetho

I-PET Granulation ye-infrared crystal dryer iyinoveli nobuchwepheshe obusha obusebenzisa ukukhanya kwe-IR ukuze kome futhi kukhanye ama-flakes e-PET esinyathelweni esisodwa, ngaphambi kokuwaphakela i-extruder ukuze aqhubeke nokusebenza. Lobu buchwepheshe bungathuthukisa ukusebenza kahle kanye nekhwalithi ye-PET extrusion, ngokunciphisa isikhathi sokumisa ne-crystallization, ukusetshenziswa kwamandla, okuqukethwe umswakama, nokulahlekelwa kwe-IV, futhi ngokwandisa ukuminyana kwenqwaba kanye nekhwalithi yomkhiqizo. Lobu buchwepheshe bungahlangabezana nezidingo zezicelo zebanga lokudla, ngokugcina i-IV nokuvimbela ukuphuzi kanye nokuwohloka kwe-PET. Lobu buchwepheshe bungaba negalelo ekusimameni kanye nomnotho oyindilinga we-PET, ngokuvumela ukugaywa kabusha nokusetshenziswa kabusha kwe-PET emikhiqizweni emisha.

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