Monoethylene Glycol (MEG), nrog rau Chemical Abstracts Service (CAS) tus lej 2219-51-4, yog ib qho tshuaj lom neeg tseem ceeb hauv kev lag luam uas siv dav hauv kev tsim cov polyester fibers, polyethylene terephthalate (PET) resins, antifreeze formulations, thiab lwm yam tshuaj tshwj xeeb. Ua ib yam khoom siv raw tseem ceeb hauv ntau yam lag luam, MEG ua lub luag haujlwm tseem ceeb hauv kev xa khoom thoob ntiaj teb. Kev ua lag luam rau MEG tau ntsib kev hloov pauv tseem ceeb hauv xyoo tas los no vim muaj kev hloov pauv ntawm cov qauv kev thov, cov khoom noj khoom haus, thiab cov kev cai lij choj hloov pauv. Tsab xov xwm no tshawb nrhiav qhov xwm txheej tam sim no ntawm kev ua lag luam thiab cov qauv yav tom ntej uas tsim kev lag luam MEG.
Qhov Xwm Txheej Lag Luam Tam Sim No
1. Kev thov khoom ntau ntxiv los ntawm kev lag luam Polyester thiab PET**
Daim ntawv thov loj tshaj plaws ntawm MEG yog nyob rau hauv kev tsim cov polyester fibers thiab PET resins, uas yog siv dav hauv cov ntaub, ntim khoom, thiab cov fwj dej haus. Nrog rau kev siv cov khoom ntim thiab cov ntaub ua los ntawm cov khoom siv hluavtaws ntau ntxiv, tshwj xeeb tshaj yog nyob rau hauv cov teb chaws tshiab, qhov kev thov rau MEG tseem muaj zog. Thaj av Asia-Pacific, coj los ntawm Tuam Tshoj thiab Is Nrias teb, txuas ntxiv mus tswj kev siv vim muaj kev lag luam sai thiab kev loj hlob hauv nroog.
Tsis tas li ntawd xwb, kev hloov mus rau cov kev daws teeb meem ntim khoom ruaj khov tau txhawb kev siv cov PET rov ua dua tshiab (rPET), uas txhawb nqa kev thov MEG tsis ncaj qha. Txawm li cas los xij, kev lag luam ntsib teeb meem los ntawm kev hloov pauv ntawm tus nqi roj av, vim MEG feem ntau yog los ntawm ethylene, uas yog cov khoom siv roj av.
2. Cov Ntawv Thov Antifreeze thiab Coolant
MEG yog ib qho tseem ceeb hauv cov tshuaj tiv thaiv kev khov thiab cov tshuaj txias, tshwj xeeb tshaj yog hauv cov tsheb thiab HVAC systems. Txawm hais tias qhov kev thov los ntawm cov khoom no tseem ruaj khov, qhov nce ntawm cov tsheb fais fab (EVs) muaj ob qho tib si lub cib fim thiab kev cov nyom. Cov tsheb siv lub cav combustion sab hauv ib txwm xav tau MEG-based antifreeze, tab sis EVs siv cov thev naus laus zis txias sib txawv, uas yuav hloov pauv qhov kev thov mus sij hawm ntev.
3. Kev Tsim Khoom thiab Kev Tsim Khoom
Kev tsim MEG thoob ntiaj teb yog nyob rau hauv cov cheeb tsam uas muaj cov khoom siv ethylene ntau, xws li Middle East, North America, thiab Asia. Kev nthuav dav tsis ntev los no hauv kev muaj peev xwm ethylene, tshwj xeeb tshaj yog hauv Tebchaws Meskas thiab Tuam Tshoj, tau txhim kho kev muaj MEG. Txawm li cas los xij, kev cuam tshuam kev thauj mus los, kev kub ntxhov hauv ntiaj teb, thiab kev hloov pauv ntawm tus nqi zog tseem txuas ntxiv cuam tshuam rau kev ruaj khov ntawm kev muab khoom.
Cov kev cai ib puag ncig kuj tseem cuam tshuam rau cov txheej txheem tsim khoom. Cov chaw tsim khoom tab tom tshawb nrhiav cov bio-based MEG uas tau los ntawm qab zib lossis pob kws ua lwm txoj hauv kev ruaj khov rau cov roj av MEG. Txawm hais tias bio-MEG tam sim no tuav ib feem me me ntawm kev ua lag luam, nws yuav tsum tau txais kev siv vim tias cov lag luam tseem ceeb rau kev txo cov pa roj carbon.
Cov Qauv Lag Luam Yav Tom Ntej
1. Kev Txhim Kho Kev Ruaj Ntseg thiab Kev Lag Luam Ib Ncigs
Qhov kev thawb kom muaj kev ruaj khov yog kev hloov kho dua tshiab ntawm kev lag luam MEG. Cov neeg siv khoom kawg loj, tshwj xeeb tshaj yog nyob rau hauv kev lag luam ntim khoom thiab textile, raug kev nyuaj siab kom siv cov khoom siv zoo rau ib puag ncig. Qhov no tau ua rau muaj kev nqis peev ntau ntxiv rau hauv bio-based MEG thiab cov thev naus laus zis rov ua dua tshiab uas hloov cov khib nyiab PET rov qab mus rau hauv MEG thiab purified terephthalic acid (PTA).
Tsoomfwv thiab cov koom haum tswjfwm tab tom siv cov cai nruj dua rau cov khib nyiab yas, ua rau muaj kev thov rau cov khoom siv rov ua dua tshiab thiab cov khoom lwj. Cov tuam txhab uas tuaj yeem ua raws li cov hom phiaj kev ruaj khov no yuav tau txais txiaj ntsig zoo dua hauv xyoo tom ntej.
2. Kev Txhim Kho Txog Kev Siv Tshuab Hauv Kev Tsim Khoom
Kev tsim kho tshiab hauv cov txheej txheem tsim MEG yuav ua rau kev ua haujlwm zoo dua thiab txo qhov cuam tshuam rau ib puag ncig. Cov thev naus laus zis catalytic uas txo qis kev siv hluav taws xob thiab cov pa phem tau raug tsim kho. Tsis tas li ntawd, kev nce qib hauv kev ntes thiab siv cov pa roj carbon (CCU) tuaj yeem ua rau kev tsim MEG raws li fossil ruaj khov dua.
Lwm qhov kev hloov tshiab yog kev koom ua ke ntawm cov thev naus laus zis digital xws li AI thiab IoT hauv cov chaw tsim khoom kom ua kom zoo dua cov txiaj ntsig ntawm kev tsim khoom thiab txo lub sijhawm tsis ua haujlwm. Cov kev tsim kho tshiab no tuaj yeem ua rau muaj kev tsim khoom MEG uas siv nyiaj tsawg thiab ntsuab dua yav tom ntej.
3. Kev Hloov Pauv Hauv Cheeb Tsam Kev Xav Tau Thiab Kev Lag Luam
Cov teb chaws Es Xias-Pacific yuav tseem yog cov neeg siv khoom loj tshaj plaws ntawm MEG, vim yog kev nthuav dav ntawm kev lag luam textile thiab ntim khoom. Txawm li cas los xij, Africa thiab Southeast Asia tab tom tshwm sim ua cov lag luam loj hlob tshiab vim muaj kev lag luam thiab kev loj hlob hauv nroog.
Kev lag luam kuj tseem hloov pauv. Txawm hais tias Middle East tseem yog lub teb chaws xa khoom loj vim nws cov khoom noj ethylene pheej yig, North America tab tom txhawb nws txoj haujlwm nrog shale gas-derived ethylene. Lub caij no, Tebchaws Europe tab tom tsom mus rau bio-based thiab rov ua dua MEG kom ua tiav nws cov hom phiaj kev ruaj khov, tej zaum yuav txo qis kev vam khom rau kev xa khoom tuaj.
4. Kev Cuam Tshuam ntawm Cov Tsheb Fais Fab thiab Lwm Yam Tshuab
Kev hloov pauv ntawm cov khoom siv hauv tsheb mus rau EVs tej zaum yuav txo qhov kev xav tau cov tshuaj tiv thaiv kev khov ib txwm muaj, tab sis cov cib fim tshiab yuav tshwm sim hauv cov txheej txheem tswj kev kub ntawm lub roj teeb. Kev tshawb fawb tseem tab tom ua mus kom txiav txim siab seb MEG lossis lwm cov tshuaj txias puas yuav raug nyiam hauv cov tsheb EVs tiam tom ntej.
Tsis tas li ntawd xwb, kev tsim cov khoom siv lwm yam, xws li cov yas uas lwj tau, tuaj yeem sib tw lossis ua kom tiav cov khoom lag luam raws li MEG. Cov neeg koom nrog kev lag luam yuav tsum saib xyuas cov qauv no kom hloov kho lawv cov tswv yim raws li qhov tsim nyog.
Kev lag luam thoob ntiaj teb Monoethylene Glycol (MEG) tab tom hloov pauv ntau vim muaj kev hloov pauv ntawm cov qauv kev thov, kev nyuaj siab rau kev ruaj khov, thiab kev nce qib ntawm thev naus laus zis. Txawm hais tias cov ntawv thov ib txwm muaj hauv polyester thiab antifreeze tseem yog cov tseem ceeb, kev lag luam yuav tsum hloov kho rau cov qauv tshiab xws li kev tsim khoom siv bio-based, cov qauv kev lag luam ncig, thiab kev hloov pauv hauv cheeb tsam. Cov tuam txhab uas nqis peev rau hauv kev coj ua ruaj khov thiab cov thev naus laus zis tshiab yuav nyob hauv qhov chaw zoo los vam meej hauv thaj chaw MEG uas hloov pauv.
Thaum lub ntiaj teb txav mus rau cov kev daws teeb meem ntsuab dua, MEG lub luag haujlwm hauv kev lag luam uas tsis muaj carbon ntau yuav nyob ntawm seb kev lag luam sib npaug li cas ntawm tus nqi, kev ua tau zoo, thiab kev cuam tshuam rau ib puag ncig. Cov neeg koom tes thoob plaws hauv cov saw hlau muaj nqis yuav tsum koom tes ua ke kom ntseeg tau tias kev loj hlob mus sij hawm ntev thiab kev ua siab ntev hauv kev lag luam tshuaj lom neeg tseem ceeb no.
Lub sijhawm tshaj tawm: Lub Yim Hli-22-2025