Izitshalo zokuvuselela izifuyo zinemishini eminingi ebalulekile yenqubo exhunywe yizinhlelo zokudlulisa umoya kanye nemishini. Isikhathi sokungasebenzi ngenxa yokwakheka kabi kohlelo lokudlulisa, ukusetshenziswa okungalungile kwezingxenye, noma ukuntuleka kokunakekelwa akufanele kube ngokoqobo. Cela okwengeziwe.#Imikhuba Emihle
Wonke umuntu uyavuma ukuthi ukukhiqiza imikhiqizo evela ku-PET ephinde yasetshenziswa (rPET) kuyinto enhle, kodwa ukukhiqiza izingxenye ezisezingeni eliphezulu ezivela ezintweni zokusetshenziswa ezingahleliwe, njengamabhodlela e-PET asetshenziswa ngemva kokuthengwa, akulula. Imishini yenqubo eyinkimbinkimbi (isb. ukuhlunga okubonakalayo, ukuhlunga, ukukhipha, njll.) esetshenziswa ezitshalweni ze-rPET ukufeza lokhu ithole ukunakwa okuningi - futhi kufanele. Ngeshwa, izinhlelo zokuthutha ezihambisa izinto phakathi kwale mishini ngezinye izikhathi zengezwa njengokucatshangelwa kamuva, okungabangela ukusebenza okungaphansi kokufanele kwesitshalo sonke.
Emsebenzini wokuvuselela ama-PET, uhlelo lokudlulisa oluhlanganisa zonke izinyathelo zenqubo ndawonye - ngakho-ke kufanele luklanyelwe ngqo lokhu okubalulekile.
Ukugcina isitshalo sakho sisebenza kuqala ngomklamo wesitshalo osezingeni eliphezulu, futhi akuzona zonke izinto zokudlulisa ezidalwe zilingana.izithutha zezikulufoezisebenze kahle kakhulu emigqeni yama-chip eminyakeni eyishumi edlule cishe zincane kakhulu futhi zihluleke ngokushesha emigqeni yama-flake. I-transporter yomoya engahambisa ama-chip angu-10,000 lb/hr ingase ikwazi ukuhambisa ama-chip angu-4000 lb/hr kuphela. Inkinga evamile ukungalandeli iziqondiso zokuklama ngqo zokuphatha izinto ezisetshenzisiwe.
I-transporter ehambisa umoya engahambisa ama-chips angu-10,000 lb/hr ingakwazi ukuhambisa ama-chips angu-4000 lb/hr kuphela.
Umqondo oyisisekelo okufanele ucatshangelwe ukuthi ubuningi obuphansi bama-PET bottle flakes bunciphisa amandla angempela esistimu yokudlulisa uma kuqhathaniswa nobuningi obukhulu bezinto ezihlanganisiwe. Ama-flakes nawo asesimweni esingajwayelekile. Lokhu kusho ukuthi imishini yokucubungula amashidi ivame ukuba nkulu kakhulu. I-screw conveyor yama-PET chips ingaba yingxenye yobubanzi futhi isebenzise amandla amabili kwezintathu enjini ye-screw conveyor eyenzelwe ama-flakes. Uhlelo lokudlulisa umoya olungahambisa i-chip engu-6000 lb/hr ngamasentimitha angu-3. Ipayipi idinga ukuba ngamasentimitha angu-3 1/2. ingxenye. Izilinganiso ze-solids kuya kugesi ezifika ku-15:1 zingasetshenziswa kuma-chips, kodwa kungcono ukusebenzisa izinhlelo zama-flake ezinesilinganiso esiphezulu esingu-5:1.
Ungakwazi yini ukusebenzisa isivinini esifanayo sokudlulisa umoya ukuze ama-flakes aphathe izinhlayiya ezimile ngendlela efanayo? Cha, kuphansi kakhulu ukuthola ukunyakaza okungajwayelekile kwama-flake. Ebhokisini lokugcina, ikhoni engu-60° evumela izinhlayiya ukuthi zigeleze kalula kumele ibe ikhoni ende engu-70° yama-flakes. Kuye ngobukhulu besitsha sokugcina, kungadingeka ukuthi kusebenze isilo ukuze kuvunyelwe ama-flakes ukuthi ageleze. Iningi lale "mithetho" lakhiwa ngokuzama nokuphutha, ngakho-ke thembela konjiniyela abanolwazi lokuklama izinqubo ngqo zama-flakes e-rPET.
Amanye ama-glidant endabuko ezinto eziqinile ezinkulu awanele amaphilisi amabhodlela. Indawo yokukhipha i-silo eboniswe lapha isizwa yisikulufu esithambekele esiphula amabhuloho futhi sikhiphe ama-flakes ku-airlock ejikelezayo ukuze angene ohlelweni lokudlulisa umoya oluthembekile noluzinzile.
Umklamo omuhle wesistimu yokudlulisa awuqinisekisi ukuthembeka kwesistimu. Ukuze kufezwe ukusebenza okuthembekile, izingxenye ohlelweni lokuthutha kumele zenzelwe ngqo ama-flakes e-rPET.
Amavalvu ajikelezayo afaka ama-flakes ohlelweni lokulethwa kwengcindezi noma kunoma iyiphi enye ingxenye yenqubo kumele abe nomsebenzi onzima ukuze amelane neminyaka yokusetshenziswa kabi kwama-flakes angajwayelekile kanye nazo zonke ezinye izinto ezingcolisayo ezidlula kuwo. Izindlu zensimbi engagqwali ezibunjiwe ezisindayo kanye nama-rotor ngokuqinisekile abiza ngaphezu kwemiklamo yensimbi encane, kodwa izindleko ezengeziwe zincishiswa isikhathi sokungasebenzi kanye nezindleko zokushintsha ihadiwe ezincishisiwe.
Ama-PET flakes asetshenziswe kabusha ahlukile kuma-PET flakes ngesimo sezinhlayiya noma ubuningi obukhulu. Futhi ayacasula.
Ama-rotor kuma-valve ajikelezayo aklanyelwe i-lamella kufanele abe ne-rotor enomumo ongu-V kanye "ne-gelough" endaweni yokungena ukuze kuncishiswe ukuqhekeka nokuvaleka. Amathiphu aguquguqukayo ngezinye izikhathi asetshenziselwa ukuxazulula izinkinga zokuqhekeka, kodwa lokhu kudinga ukulungiswa njalo futhi kufake nezingcezu ezincane zensimbi enkambisweni ezingadala izinkinga ezansi komfula.
Ngenxa yemvelo yokukhuhla kwama-flakes, izindololwane ezinhlelweni zokudlulisa umoya ziyinkinga evamile. Uhlelo lokuthutha amashidi lunesivinini esiphezulu, futhi ishidi elishelelayo ebusweni bangaphandle bendololwane lizodlula epayipini lensimbi engagqwali lebanga le-10. Abaphakeli abahlukahlukene banikeza izindololwane ezikhethekile ezinciphisa le nkinga, futhi zingakhiwa ngisho nangabakhi bemishini.
Ukuguguleka kwenzeka ezindaweni ezivamile zokugoba ezinde njengoba izinto eziqinile ezihudulayo zishelela ebusweni bangaphandle ngesivinini esikhulu. Cabanga ngokusebenzisa izindawo ezimbalwa ngangokunokwenzeka, futhi mhlawumbe izindawo ezikhethekile ezenzelwe ukunciphisa lokhu kuguguleka.
Ukuthuthukisa nokusebenzisa uhlelo lokunakekela uhlelo lokuhambisa izimpahla lwesitshalo kuyisinyathelo sokugcina, njengoba kunezingxenye eziningi ezihambayo ezithintana ngqo nama-flakes angajwayelekile kanye nokungcola. Ngeshwa, ukulungiswa okuhleliwe kuvame ukunganakwa.
Amanye ama-airlock ajikelezayo anezivalo zomgodi ezidinga ukuqina njalo ukuze kugwenywe ukuvuza. Bheka ama-valve anezivalo zomgodi ze-labyrinth kanye nama-outboard bearings angadingi ukulungiswa njalo. Uma lawa ma-valve esetshenziswa ephepheni, kuvame ukudingeka ukuhlanza isivalo somgodi ngomoya ohlanzekile wezinsimbi. Qiniseka ukuthi ingcindezi yokuhlanza isivalo somgodi isethwe kahle (ngokuvamile cishe ngama-psig ama-5 ngaphezu kwengcindezi ephezulu yokulethwa) nokuthi umoya uyageleza ngempela.
Ama-rotor e-rotary valve agugile angabangela ukuvuza okukhulu ezinhlelweni zokulethwa kwengcindezi ezinhle. Lokhu kuvuza kunciphisa inani lomoya ohanjiswayo emgudwini, ngaleyo ndlela kunciphisa amandla ohlelo. Kungabangela nezinkinga zokubopha i-hopper ngaphezu kwe-rotary airlock, ngakho-ke hlola igebe phakathi kwe-rotor tip kanye ne-housing njalo.
Ngenxa yobuningi bothuli, izihlungi zomoya zingavala ngokushesha izitshalo ze-rPET ngaphambi kokukhulula umoya ohambisayo ubuyele emkhathini. Qiniseka ukuthi i-differential pressure gauge isebenza kahle futhi uqinisekise ukuthi opharetha uyayihlola njalo. Uthuli lwe-PET olulula kakhulu noluthambile lungavala noma luvale i-outlet yeqoqo, kodwa i-transmitter esezingeni eliphezulu ekhonini lokukhipha ingasiza ekutholeni lokhu kuvinjelwa ngaphambi kokuba kubangele izinkinga ezinkulu. Qiniseka ukuthi uhlanza njalo uthuli ngaphakathi kwesikhwama.
Lesi sihloko asikwazi ukumboza yonke imithetho yokuklama nokugcinwa okuthembekile kwezinhlelo zokudlulisa ezitshalweni ze-rPET, kodwa ngethemba ukuthi uyaqonda ukuthi kunezinto eziningi okufanele uzicabangele nokuthi akukho okunye okungathatha indawo yesipiliyoni. Cabanga ngokulandela izincomo zabahlinzeki bemishini abake baphatha ama-flakes e-rPET esikhathini esidlule. Laba bathengisi badlule kuzo zonke izivivinyo namaphutha, ngakho akudingeki udlule kuzo futhi.
Mayelana Nombhali: UJoseph Lutz unguMqondisi Wezokuthengisa Nokumaketha wePelletron Corp. Uneminyaka eyi-15 yesipiliyoni sobuchwepheshe ekuthuthukiseni izixazululo zokuphatha izinto zepulasitiki eziningi. Umsebenzi wakhe ePelletron waqala ku-R&D, lapho afunda khona konke mayelana ne-pneumatics elabhorethri yokuhlola. ULutz uqashe izinhlelo eziningi zokudlulisa i-pneumatics emhlabeni jikelele futhi unikezwe amalungelo obunikazi amathathu amasha omkhiqizo.
Ubuchwepheshe obusha, obuzoqala ukusebenza e-NPE ngenyanga ezayo, buxwayisa lapho kudingeka ukulungiswa kokuvimbela ngaphambi kokuba ukwehluleka kwemishini kuphazamise ukukhiqizwa.
Uma kuqhathaniswa nezindleko zokuthenga i-resin enombala ongaphambili noma ukufaka i-mixer ephakathi enamandla aphezulu ukuze kuhlanganiswe i-resin ne-masterbatch, ukufaka imibala emshinini kunganikeza izinzuzo ezinkulu zezindleko, kufaka phakathi izindleko ezincishisiwe zezinto zokwakha kanye nokuguquguquka kwenqubo okwandisiwe.
Ngezinhlelo zokuhambisa i-vacuum zokucubungula ipulasitiki, izixazululo zokuphatha i-powder ezenziwe ngokwezifiso azidingeki njalo. Izixazululo ze-turnkey ezenziwe kusengaphambili zingaba ukukhetha okuhle kakhulu kwama-powder kanye nezinto eziqinile ezimbonini eziningi.
Isikhathi sokuthunyelwe: Julayi-25-2022
