Tam sim no, kev tsim kho tshiab hauv kev siv thev naus laus zis niaj hnub tsim los daws cov teeb meem thoob ntiaj teb ntawm cov pov tseg yas. Txawm li cas los xij, ib txwm muaj teeb meem, uas yog txwv tsis pub muaj cov khoom zoo thiab cov khoom siv rov ua dua tshiab. Raws li kev lag luam tshuaj lom neeg tau sim daws cov khoom pov tseg yas, cov pa phem tau dhau los ua ib qho kev txhawj xeeb, xws li cov ntaub ntawv nrog cov coatings lossis cov yeeb yaj kiab, los yog cov ntaub ntawv uas tau pleev xim, luam tawm, lossis xim. Vim tsis muaj peev xwm ntawm cov txheej txheem rov ua dua tshiab los daws cov ntaub ntawv nyoos, feem ntau ntawm cov ntaub ntawv no tau muab pov tseg rau hauv qhov chaw pov tseg los yog incinerated.
Hauv Tebchaws Europe, nrog rau kev qhia txog cov kev cai tshiab rau kev pov tseg, xws li cov lus qhia tshiab cov tsheb khib nyiab, cov tuam txhab yuav tsum pib txiav txim siab yuav ua li cas los daws cov ntaub ntawv nyuaj. Kev tawg yog ib qho cuab yeej tshiab uas tuaj yeem kov yeej cov teeb meem no.
Qhov tseeb cyclical txheej txheem
Dissolution recycling yog txheej txheem rov qab lub cev uas siv cov kuab tshuaj xaiv los rho tawm cov polymer uas xav tau. Cov polymer uas tau muab rho tawm tuaj yeem siv los tsim cov khoom siv tshiab. Cov txheej txheem dissolution yog ib qho kev siv thev naus laus zis, uas dhau los ntawm cov khoom siv ua ntej thiab tom qab cov khoom siv uas muaj cov polymer uas xav tau tuaj yeem muab tso ncaj qha rau hauv cov kuab tshuaj yam tsis muaj qhov tseem ceeb pretreatment. Cov kuab tshuaj yuav yaj cov khoom uas yuav tsum tau ua, thaum tag nrho lwm cov pov tseg tseem nyob hauv lub xeev khov thiab tuaj yeem lim tawm. Cov extracted yaj polymer yog 100% zoo thiab tuaj yeem siv rau kev tsim cov ntaub ntawv tshiab. Tsis tas li ntawd, cov khoom siv ntxiv tuaj yeem ua tiav los ntawm lwm cov thev naus laus zis rov ua dua tshiab. Txhawm rau kom ua tiav qhov tseeb hauv cov txheej txheem no, cov kuab tshuaj siv tau kuj tuaj yeem siv rov ua dua thiab rov ua dua tshiab hauv cov txheej txheem ncig, uas yog ib qho txiaj ntsig zoo. Raws li tau hais los saum toj no, lub tshuab siv lub cev siv lub cev no tsis tas yuav tsum tau kho ua ntej thiab tuaj yeem ua tiav cov kev hloov pauv siab. Dissolution recycling yog suav hais tias yog ib lub tshuab muaj zog uas yuav ua lub luag haujlwm tseem ceeb hauv lub voj voog yas yav tom ntej.
Polycarbonate / PC yog cov khoom siv nrog lub peev xwm loj rau kev tawg. Raws li ntau yam engineering polymer, ntau cov khoom siv hauv PC raws li tam sim no raug faus lossis hlawv, xws li PC thiab PC / ABS siv hauv tsheb, iav ntim lossis nplaim hluav taws xob PC, thiab PC / ABS hauv cov khoom siv hluav taws xob, txhua yam yog suav tias yog ua phem heev. Tam sim no cov ntaub ntawv no tuaj yeem rov qab los ntawm kev tawg. Cov khoom siv rov ua dua tshiab polymer yog pob tshab thiab tuaj yeem siv rau cov khoom lag luam xav tau, muab cov neeg tsim khoom lag luam nrog qhov yooj yim lawv xav tau thiab muab cov qauv txuas ntxiv nrog cov kev xaiv rov ua dua tshiab.
Dissolved recycling yog ib qho cuab yeej siv tau tam sim ntawd
PC dissolution thev naus laus zis tuaj yeem nqa cov txiaj ntsig zoo rau ntau lub tuam txhab vim nws yog ib qho kev daws teeb meem uas tuaj yeem siv tau yooj yim yam tsis muaj peev txheej loj. Cov khoom siv rov ua dua tshiab muaj qhov zoo thiab ua haujlwm zoo, ua rau lawv haum rau ntau daim ntawv thov. Tsis tas li ntawd, cov khoom tsim los ntawm cov khoom siv rov ua dua tshiab muaj cov pa roj carbon tsawg dua li cov khoom tsim los ntawm cov khoom siv fossil. Cov thev naus laus zis no yog ib qho kev hloov pauv tshiab tshiab uas muab cov kev daws teeb meem zoo rau kev daws cov khoom seem uas tau ntsib hauv lub neej niaj hnub.
Cov thev naus laus zis no tsis txwv rau PC: cov tuam txhab thoob plaws hauv kev lag luam chemical tab tom tshawb nrhiav cov txheej txheem no siv polystyrene, polyethylene ntim zaub mov, polypropylene, thiab lwm yam ntaub ntawv. Dissolution yog ib qho ntxiv rau lwm cov txheej txheem rov ua dua tshiab txhawm rau txhawm rau txhawm rau rov siv cov pov tseg yas kom zoo tshaj plaws uas yuav muab pov tseg.
