Izityalo zokuphinda zisetyenziswe ze-PET zinezixhobo ezininzi ezibalulekileyo zenkqubo ezidityaniswe ziinkqubo zokuhambisa umoya kunye nezoomatshini. Ixesha lokungasebenzi ngenxa yoyilo olubi lwenkqubo yokuhambisa, ukusetyenziswa gwenxa kwezinto, okanye ukungabikho kolondolozo akufanele kube yinto eyenzekayo. Cela okungakumbi.#Iindlela ezilungileyo
Wonke umntu uyavuma ukuba ukuvelisa iimveliso ezivela kwi-PET ephinde yasetyenziswa (rPET) yinto elungileyo, kodwa ukuvelisa iindawo ezikumgangatho ophezulu ezivela kwizinto ezingacwangciswanga, ezifana neebhotile ze-PET ezithengiswa emva komthengi, akulula. Izixhobo zenkqubo enzima (umz. ukuhluza nge-optical, ukucoca, ukukhupha, njl.njl.) ezisetyenziswa kwizityalo ze-rPET ukufezekisa oku zifumene ingqwalasela eninzi - kwaye kufanelekile. Ngelishwa, iinkqubo zothutho ezihambisa izinto phakathi kwezi zixhobo ngamanye amaxesha zongezwa njengengcinga yokugqibela, enokubangela ukuba isityalo singasebenzi kakuhle.
Kwinkqubo yokuphinda usebenzise ii-PET, yinkqubo yokuhambisa edibanisa onke amanyathelo enkqubo - ngoko ke kufuneka yenzelwe ngokukodwa le nto.
Ukugcina isityalo sakho sisebenza kuqala ngoyilo lwesityalo olusemgangathweni, kwaye ayizizo zonke izixhobo zokudlulisa ezidalwe ngokulinganayo.ii-screw conveyorsEzisebenze kakuhle kakhulu kwiintambo zeetshiphusi kwiminyaka elishumi edlulileyo zinokuba ncinci kakhulu kwaye zingasebenzi ngokukhawuleza kwiintambo zeetshiphusi. Isithuthi esithwala umoya esinokuhambisa iitshiphusi eziyi-10,000 lb/hr sinokukwazi ukuhambisa iitshiphusi eziyi-4000 lb/hr kuphela. Ingxaki eqhelekileyo kukungalandeli izikhokelo zoyilo ngokukodwa zokuphatha izinto ezisetyenzisiweyo.
Isithuthi esithwala umoya esinokuhambisa iitships eziyi-10,000 lb/hr sinokukwazi ukuhambisa iitships eziyi-4000 lb/hr kuphela.
Eyona ngcamango isisiseko ekufuneka iqwalaselwe kukuba uxinano oluphantsi lwee-PET bottle flakes lunciphisa amandla okwenyani enkqubo yokudlulisa xa kuthelekiswa noxinano oluphezulu lwezinto ezibunjiweyo. Ezi flakes nazo aziqhelekanga kwimilo. Oku kuthetha ukuba izixhobo zokucubungula amaphepha zihlala zikhulu kakhulu. I-screw conveyor yee-PET chips inokuba sisiqingatha sobubanzi kwaye isebenzise isibini kwisithathu samandla enjini ye-screw conveyor eyenzelwe ii-flakes. Inkqubo yokudlulisa umoya enokuhambisa i-chip eyi-6000 lb/hr kwi-intshi ezi-3. Umbhobho kufuneka ube yi-3 1/2 intshi. Inxalenye. Umlinganiselo we-solids ukuya kwi-gas ukuya kwi-15:1 ungasetyenziselwa ii-chips, kodwa kungcono ukusebenzisa iinkqubo ze-flake ezinomlinganiselo ophezulu we-5:1.
Ungayisebenzisa isantya esifanayo sokuhambisa umoya kwiiflakes ukuze ziphathe amasuntswana anemilo efanayo? Hayi, iphantsi kakhulu ukuba ifumane intshukumo engaqhelekanga yeeflakes. Kwibhokisi yokugcina, ikhowuni ye-60° evumela amasuntswana ukuba ahambe ngokulula kufuneka ibe yikhowuni ende ye-70° yeeflakes. Ngokuxhomekeke kubukhulu besikhongozeli sokugcina, kunokufuneka ukuba kusebenze isisele ukuvumela iiflakes ukuba zihambe. Uninzi lwale "mithetho" luphuhliswa ngokuzama nokuphosa, ngoko ke thembela kwiinjineli ezinamava okuyila iinkqubo ngokukodwa zeeflakes ze-rPET.
Ezinye ii-glidants zemveli zezinto eziqinileyo azinelanga kwiipilisi zebhotile. Indawo yokukhupha i-silo eboniswe apha incediswa sisikrufu esithambekileyo esiqhekeza iibhulorho kwaye sikhuphe iiflekhi kwi-airlock ejikelezayo ukuze zingene kwinkqubo yokuhambisa umoya ethembekileyo nezinzileyo.
Uyilo oluhle lwenkqubo yokuhambisa aluqinisekisi ukuthembeka kwenkqubo. Ukuze kufezekiswe ukusebenza okuthembekileyo, izinto ezikwinkqubo yokuthutha kufuneka zenzelwe ngokukodwa iiflekhi ze-rPET.
Iivalvu ezijikelezayo ezondla iiflakes kwinkqubo yokuhambisa uxinzelelo okanye nakweyiphi na inxalenye yenkqubo kufuneka zibe nzima ukumelana neminyaka yokuxhatshazwa ziiflakes ezingaqhelekanga kunye nazo zonke ezinye izinto ezingcolisayo ezidlula kuzo. Iindlu zentsimbi engagqwaliyo kunye neerotor eziqinileyo ngokuqinisekileyo zibiza ngaphezu koyilo lwesinyithi esincinci, kodwa iindleko ezongezelelweyo zincitshiswa kukunciphisa ixesha lokungasebenzi kunye neendleko zokutshintshwa kwezixhobo.
Iiflakes zePET eziphinda zisetyenziswe zahlukile kwiiflakes zePET ngokwemilo yamasuntswana okanye ubuninzi. Zikwarhabaxa.
Iirotha ezikwiivalufa ezijikelezayo ezenzelwe i-lamella kufuneka zibe nerotha enomfanekiso we-V kunye "nekhuba" kwindawo yokungena ukunciphisa ukuqhekeka nokuvaleka. Iingcebiso eziguquguqukayo ngamanye amaxesha zisetyenziselwa ukoyisa iingxaki zokuqhekeka, kodwa ezi zifuna ukulungiswa rhoqo kwaye zikwangenisa iziqwenga ezincinci zesinyithi kwinkqubo enokubangela iingxaki ngezantsi.
Ngenxa yokuba ii-flakes zirhabaxa, iingqiniba kwiinkqubo zokuhambisa umoya ziyingxaki eqhelekileyo. Inkqubo yokuthutha amashiti inesantya esiphezulu, kwaye ishiti elityibilikayo kumphezulu ongaphandle wengqiniba liya kudlula kwityhubhu yentsimbi engagqwaliyo yebanga le-10. Ababoneleli abahlukeneyo banikezela ngeengqiniba ezikhethekileyo ezinciphisa le ngxaki, kwaye zinokwenziwa nangabakhi boomatshini.
Ukuguguleka kwenzeka kwiindawo ezigobileyo eziqhelekileyo zeradiyumu njengoko izinto eziqinileyo ezirhabaxa zityibilika kumphezulu ongaphandle ngesantya esiphezulu. Cinga ngokusebenzisa iindawo ezimbalwa ezigobileyo kangangoko kunokwenzeka, kwaye mhlawumbi iindawo ezikhethekileyo ezenzelwe ukunciphisa oku kuguguleka.
Ukuphuhlisa nokusebenzisa isicwangciso sokugcina inkqubo yokuhambisa impahla yesityalo linyathelo lokugqibela, njengoko kukho iindawo ezininzi ezihambayo ezidibana ngqo namaqhekeza angacwangciswanga kunye nongcoliseko. Ngelishwa, ulondolozo olucwangcisiweyo ludla ngokunganakwa.
Ezinye ii-rotary airlocks zinezitywino ze-shaft ezifuna ukuqiniswa rhoqo ukuze kuthintelwe ukuvuza. Khangela iivalvu ezinezitywino ze-labyrinth shaft kunye neebheringi zangaphandle ezingafuni ukugcinwa rhoqo. Xa ezi valve zisetyenziswa kwiifayile zeshiti, kudla ngokuba yimfuneko ukucoca isitywino se-shaft ngomoya ococekileyo wesixhobo. Qinisekisa ukuba uxinzelelo lwe-shaft seal purge lubekwe ngokuchanekileyo (ngesiqhelo malunga ne-5 psig ngaphezulu koxinzelelo oluphezulu lokuhambisa) kwaye umoya uyahamba ngokwenene.
Iirotha zevalvu ezijikelezayo ezigugileyo zinokubangela ukuvuza okugqithisileyo kwiinkqubo zokuhambisa uxinzelelo ezilungileyo. Oku kuvuza kunciphisa ubungakanani bomoya othuthwayo kwi-duct, ngaloo ndlela kunciphisa amandla enkqubo iyonke. Kunokubangela iingxaki zokudibanisa i-hopper ngaphezulu kwe-rotary airlock, ngoko ke jonga umsantsa phakathi kwe-rotor tip kunye ne-housing rhoqo.
Ngenxa yobuninzi bothuli, izihluzi zomoya zinokuvala ngokukhawuleza izityalo ze-rPET ngaphambi kokuba zikhuphe umoya othuthayo ubuyele emoyeni. Qinisekisa ukuba i-differential pressure gauge isebenza kakuhle kwaye uqinisekise ukuba umqhubi uyayijonga rhoqo. Uthuli lwe-PET olukhaphukhaphu noluthambileyo lunokuvala okanye luvale umngxuma womqokeleli, kodwa i-transmitter ephezulu kwi-discharge cone inokunceda ekufumaneni ezi zivimbelo ngaphambi kokuba zibangele iingxaki ezinkulu. Qinisekisa ukuba ususa rhoqo uthuli oluqokelelene ngaphakathi kwebhegi.
Eli nqaku alinakugubungela yonke imithetho yoyilo oluthembekileyo kunye nokugcinwa kweenkqubo zokudlulisa kwizityalo ze-rPET, kodwa ndiyathemba ukuba uyaqonda ukuba kukho amanqaku amaninzi ekufuneka aqwalaselwe kwaye akukho nto ingathatha indawo yamava. Cinga ngokulandela iingcebiso zababoneleli bezixhobo abaye baphatha iiflekhi ze-rPET kwixesha elidlulileyo. Aba bathengisi baye badlula kuzo zonke iimvavanyo neempazamo, ngoko ke akufuneki udlule kuzo.
Malunga noMbhali: UJoseph Lutz nguMlawuli weNtengiso kunye nokuThengisa kwiPelletron Corp. Unamava obuchwephesha eminyaka eli-15 ekuphuhliseni izisombululo zokuphatha izinto zeplastiki ezininzi. Umsebenzi wakhe ePelletron waqala kwi-R&D, apho wafunda khona ulwazi nge-pneumatics kwilabhoratri yovavanyo. ULutz uqalise iinkqubo ezininzi zokuhambisa umoya kwihlabathi liphela kwaye unikwe amalungelo awodwa omenzi wemveliso amathathu amatsha.
Ubuchwepheshe obutsha, obuza kuqala kwi-NPE kwinyanga ezayo, bulumkisa xa kufuneka ulondolozo lokuthintela ngaphambi kokuba ukungasebenzi kakuhle kwezixhobo kuphazamise imveliso.
Xa kuthelekiswa neendleko zokuthenga i-resin enemibala esele ifakiwe okanye ukufaka umxube ophakathi onamandla aphezulu kwi-resin exutywe ngaphambili kunye ne-masterbatch, ukufaka imibala kumatshini kunokubonelela ngeenzuzo ezinkulu zeendleko, kubandakanya iindleko eziphantsi zezinto ezisetyenzisiweyo kunye nokuguquguquka kweenkqubo.
Kwiinkqubo zokuhambisa i-vacuum zokucubungula iplastiki, izisombululo zokuphatha ipowder ezenzelwe wena azisoloko zifuneka. Izisombululo ze-turnkey ezenziwe kwangaphambili zinokuba lukhetho olufanelekileyo lweepowder kunye nezinto eziqinileyo ezininzi kumashishini amaninzi.
Ixesha lokuthumela: Julayi-25-2022
