Granular Polyethylene: Ua Thiab Tsim Cov Polyethylene Granules, Rov Ua Dua Polyethylene Granulator

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

Hauv peb tsab xov xwm peb yuav qhia koj txog cov yam ntxwv ntawm cov yas polyethylene thiab qhov uas nws siv. Cia peb nyob hauv kev nthuav dav ntxiv ntawm cov txheej txheem ntawm nws cov khoom tsim thiab rov ua dua tshiab.

Peculiarities

Granulation yog theem kawg ntawm txhua qib thev naus laus zis hauv kev tsim khoom ntawm ethylene polymers. Feem ntau ntawm txhua qhov polyethylene tau tsim hauv daim ntawv ntawm cov granules, uas yog, cov khoom ua tau zoo ntawm qee qhov ntev.

Cov txheej txheem granulation pab daws peb teeb meem ib zaug:

• tiav ntawm polymers - tshem tawm cov seem ntawm cov tshuaj ntxiv thiab cov kuab tshuaj, txhim kho cov yam ntxwv ntawm cov khoom siv, degassing, ntxiv rau homogenization;
• muab cov yam ntxwv ua tau zoo ntawm cov khoom , tsim nyog rau kev siv ntau dua ntawm polyethylene hauv kev tsim cov khoom yas;
• tsim cov ntaub ntawv nrog txhua yam tshuaj ntxiv uas muaj peev xwm ua tau hloov qhov ntsuas ntawm kev ruaj ntseg tshuaj, ntom ntom, kho qhov muag, thiab cov khoom siv dielectric ntawm polyethylene .

Polyethylene nyob rau hauv daim ntawv ntawm granules muaj qhov txiaj ntsig zoo hauv kev sib piv nrog flake thiab hmoov

• Txo qhov ntim los ntawm ib nrab (qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntau tshaj plaws hauv polyethylene thiab 0, 20-0, 25 g / cc thiab 0, 5-0, 6 g / cc). Qhov no tso cai rau koj kom txo tus nqi ntawm kev khaws khoom, txav mus los thiab ntim khoom.
• Siab txaus - kev siv cov granules tsis tsim teeb meem thaum ntim khoom, nrog rau kev thauj mus los. Cov yas yas tsis lo rau ntawm phab ntsa ntawm cov cuab yeej, tsis sau hauv cov node ntawm cov txheej txheem thauj, tsis txhob siv hluav taws xob thiab tsis tsim "thaj chaw tuag" uas ua rau tsis muaj kev ruaj ntseg ntawm cov txheej txheem tsim thiab kaw cov cuab yeej siv thev naus laus zis.
• Tsawg qhov poob ntawm kev nthuav qhia - polyethylene granules tau nchuav tawm ntawm cov ntim thiab thauj cov txheej txheem kom puv.
• Tsis muaj kev cuam tshuam rau kev yees duab thiab kev puas tsuaj … Txo kev tsim cov plua plav thaum tsim kom xoom thiab, vim li ntawd, txhim kho kev ua haujlwm.

Tom qab ziab thiab tag nrho cov kev ntsuas kom ua tau raws li cov khoom yuav tsum tau ua, cov polyethylene granular tau ntim rau hauv 25 kg hnab thiab cim. Raws li GOSTs, cov granules los ntawm ib pawg yuav tsum muaj cov duab sib thooj thiab qhov loj me hauv txhua qhov kev qhia hauv thaj tsam ntawm 2-5 hli, muaj xim sib npaug. Txhua pawg tuaj yeem muaj cov granules ntawm 5–8 mm thiab 1-2 mm hauv ntim tsis tshaj 0.25% thiab 0.5%, feem . Cov ntsiab lus uas muaj qhov tsis xws luag (suav nrog kev txawv teb chaws thiab qhov ntxhib nto vim yog polymer degradation) raug tsis lees paub.

Cov cheeb tsam ntawm kev siv

Lub hauv paus ntawm daim ntawv thov ntawm cov yas polyethylene npog ntau dua 80% ntawm txhua thaj tsam ntawm polyethylene siv dav. Cia peb teev cov cheeb tsam feem ntau.

• Kev tsim cov yeeb yaj kiab ntawm ntau yam duab thiab ntau thiab tsawg … Rau qhov no, cov granules tau thauj mus rau hauv lub raj tshwj xeeb, rhaub thiab sib xyaw. Raws li qhov tshwm sim ntawm txhua qhov kev tswj hwm, tau txais qhov hnyav ntawm qhov hnyav. Los ntawm nws, zaj duab xis ntawm qhov muab tuab yog tsim los ntawm extrusion. Lub taub hau puag ncig extruder tau dav xav tau hauv kev lag luam. Txoj hauv kev no tso cai rau koj kom tau txais lub tes tsho uas tuaj yeem siv rau kev tsim lub hnab ntxiv.
• Thawv ntau lawm . Cov ntaub ntawv ntim khoom xws li cov lauj kaub, crates, fwj, thiab cov khoom zoo sib xws tau tsim los siv txhaj tshuaj molding thiab lwm yam txheej txheem molding. Hauv qhov no, cov polyethylene granular tau nqus tau nqus - txoj hauv kev no suav hais tias yog kev lag luam muaj txiaj ntsig tshaj plaws thiab siv tau.
• Kev tsim hluav taws xob rwb thaiv tsev los ntawm polyethylene ntawm cov khoom siv tshwj xeeb cable . Txoj hauv kev no zoo ib yam li thawj qhov: cov granules tau yaj thiab sib xyaw kom txog thaum homogeneous. Cov khoom siv insulating ntawm qhov yuav tsum tau ua yog tom qab ntawd tsim los siv cov txheej txheem extrusion.
• Ntau lawm ua npuas dej polyethylene (polyethylene ua npuas ncauj) . Nws yog ib qho ntawm cov khoom siv rwb thaiv tsev zoo tshaj plaws. Rau nws qhov kev tso tawm, yaj ntawm cov tshuaj polymers me me kuj tseem siv tau.
• Kev tsim cov khoom ntawm lub cev tsheb thiab lwm yam khoom uas xav tau lub zog siab … Rau qhov no, polyethylene granules ntawm qib tshwj xeeb yog pwm siv txhaj tshuaj molding.

Granulators thiab lwm yam khoom siv

Kev tsim cov hmoov polyethylene suav nrog ntau theem.

Thaum pib, cov khoom siv raw tau npaj, uas yog, sib tsoo. Nyob ntawm seb pawg twg cov khoom siv ua tiav, muaj ntau hom shredders:

• cov qauv rau cov yeeb yaj kiab polymer - pom zoo rau qhov seem ntawm polypropylene, acrylic, ntxiv rau nylon, PVC thiab lwm yam khoom zoo sib xws hauv zaj duab xis;
• zeb - tsim nyog rau kev ua cov khoom yas nyias, xws li PET fwj;
• crushers - yog qhov tsim nyog rau kev tsoo cov khoom loj, xws li PVC sam thiaj thiab lwm yam kev tsim qauv.

Cov ntaub ntawv raw tau npaj tau raug ntxuav, rau qhov no lawv siv "ntub crushers",

Ua haujlwm tau, lawv tuaj yeem ua ke sib tsoo ntawm cov ntaub ntawv raw nrog ntxuav.

Cov dej noo ntau dhau raug tshem tawm siv cov ziab ziab, raws li txoj cai, lawv siv:

• centrifuges;
• ziab nrog cua sov;
• ziab nrog cua txias;
• spin-nias;
• ntsia hlau hom dej cais.

Shredded, ntxuav thiab qhuav cov yas yuav muaj cov polymer seem vim kev txheeb xyuas thawj zaug los ntawm txhais tes tsis muab 100% kev sib cais … Txhawm rau tshem tawm txhua yam tsis tseem ceeb, tshwj xeeb cov txheej txheem cais cais tau qhia rau hauv cov qauv ntawm cov kab ntau lawm rau kev ua yas.

Cia peb piav qhia ntau yam thev naus laus zis rau kev cais cov yas yas

• Flotation sib cais … Txoj hauv kev yog ua raws qhov sib txawv ntawm qhov tsis ntub dej ntawm cov khoom sib cais. Txhawm rau ua kom sib cais, cov khoom sib xyaw npaj tau nkag mus rau hauv lub taub ntim nrog cov dej uas muaj cov pa oxygen. Cov khoom ntawm cov khoom siv hydrophobic tau npog tam sim ntawd nrog huab cua ua npuas thiab ntab. Cov ntaub ntawv Hydrophilic tau sau rau hauv qab ntawm lub tank.
• Electrostatic sib cais . Txoj kev no yog ua raws qhov sib txawv hauv kev siv hluav taws xob thiab qhov ua tau zoo ntawm cov ntaub ntawv mus rau kev sib sau ntawm cov hluav taws xob zoo li qub. Hauv chav kawm ntawm kev ua, cov khoom ntawm cov khoom siv sib tov sib xyaw, vim los ntawm kev sib txhuam, lawv cov nplaim hluav taws xob tau zoo heev thiab yog li tau txais hluav taws xob them nqi ntawm qee qhov loj. Kev sib cais tso cai rau koj cais cov ntaub ntawv nrog cov yam ntxwv sib txawv hauv cov hluav taws xob.
• Photometric sib cais … Kev ua haujlwm ntawm cov txheej txheem no yog ua raws kev sib cais ntawm cov yas raws li cov yam ntxwv kho qhov muag, uas yog, kev xav thiab xim.

Kev teeb tsa ntawm hom no tau nruab nrog lub tshuab hluav taws xob tshwj xeeb tshaj tawm cov teeb liab hluav taws xob, nrog rau cov cuab yeej ua haujlwm siab.

Cov theem kawg hauv ib qho txheej txheem rau kev tsim cov yas yas yog ncaj qha granulation, rau qhov no, siv cov yas polyethylene granulator. Cov cuab yeej no tso cai rau koj los daws teeb meem ntau yam hauv ib zaug:

• muab cov khoom tiav nthuav tawm nthuav tawm;
• kom tau txais cov khoom sib xyaw nrog ntau yam ntxiv.

Polyethylene granulator ua haujlwm zoo ib yam li extruder. Cov yas yas nyob hauv nws tau sib xyaw los ntawm kev txav tshwj xeeb cov ntsia hlau, thiab tseem hla dhau thaj tsam uas sib txawv hauv cov cua sov. Nyob rau hauv kev cuam tshuam ntawm nws qhov txiaj ntsig nce ntxiv thiab los ntawm kev sib txhuam tshwm sim thaum sib xyaw, huab hwm coj pib yaj, thiab cov zis yog cov fibers nrog rau ntu ntu ntu muab. Txhawm rau tiv thaiv lawv los ntawm kev ua ke, lawv tau ywg dej nrog dej. Tom qab lawv raug txiav nrog cov cuab yeej tshwj xeeb, ua raws qee qhov ntev. Nws yog cov ntu uas hu ua granules. Txhawm rau txias, cov cua sov ua kom sov tau muab tso rau hauv cov yeeb nkab ib puag ncig uas muaj dej, los ntawm qhov ntawd lawv txav mus rau lub centrifuge, qhov twg cov khoom loj tau tshem tawm cov kua ua ke. Tom qab ntawd cov khoom siv raw nkag mus rau chav ziab khaub ncaws, thiab thaum kawg cov khoom qhuav tau thauj mus rau chav ntim khoom.

Polyethylene granulator tso cai rau koj hloov pauv cov polymer loj rau hauv cov khoom muaj zog thiab ntom . Cov granules tso tawm muaj cov duab zoo ib yam thiab qhov loj me, cov qauv sib xws.

Hauv txhua theem ntawm granulation, tswj xyuas qhov zoo ntawm cov khoom tau txais yog qhov yuav tsum tau ua.

Cov txheej txheem rov ua dua tshiab

Nyob rau xyoo tsis ntev los no, tau muaj kev nce qib hauv cov naj npawb ntawm cov tuam txhab tsim khoom koom nrog hauv kev siv cov yas rov ua dua tshiab. Thiab lub ntsiab lus ntawm no tsis yog tsuas yog muaj teeb meem ib puag ncig, tab sis kuj tseem nyob hauv qhov kev cia siab ntawm kev lag luam. Polyethylene dhau los ua lub hauv paus zoo rau tsim cov thoob ntim cov thoob khib nyiab, txhua yam khoom ntim hauv tsev, cov yas yas thiab lwm yam khoom.

Kev siv cov yeeb yaj kiab thiab hnab rov ua dua tshiab tsis ua rau muaj teeb meem tshwj xeeb, vim tias lawv cov qauv tsis hloov pauv. Tab sis qhov no tsis tuaj yeem hais txog qhov ua tau zoo ntawm cov khoom tau txais - nrog txhua qhov kev ua haujlwm, qhov tsis pom kev thiab xim ntawm cov granulate ua rau tsis zoo.

Raws li, qhov dav ntawm kev siv txuas ntxiv kuj tseem txo qis.