Dab tsi yog MEG Manufacturing Processes?
Ob txoj kev paub tab, uas yog petrochemical ethylene oxide (EO) hydration thiab thee-raws li DMO synthesis, tam sim no ua tus tswj hwm thoob ntiaj teb Mono Ethylene Glycol (MEG) ntau lawm.
Coal-raws li MEG thev naus laus zis hauv Suav teb tau tsim cov nqi tshwj xeeb thiab cov khoom siv tau zoo, hloov kho lub ntiaj teb MEG kev lag luam khoom qauv. Raws li ib qho tseem ceeb organic chemical raw khoom siv nyob rau hauv polyester, photovoltaic cov ntaub ntawv, thiab automotive antifreeze, MEG pab ntau tshaj 20 downstream industries. Kev thov thoob ntiaj teb tau loj hlob nyob ib puag ncig 3.2% txhua xyoo, tsav kev ua kom zoo dua qub ntawm cov thev naus laus zis ntau lawm.
Ua li cas Ethylene Oxide (EO) Hydration Process tsim MEG?
Cov txheej txheem ethylene oxide hydration tseem yog cov cuab yeej siv dav tshaj plaws hauv ntiaj teb MEG ntau lawm, suav txog kwv yees li 68% ntawm lub peev xwm thoob ntiaj teb.
Thawj qhov kev lag luam hauv xyoo 1937, txoj kev petrochemical no siv naphtha lossis ethane - muab ethylene los ua khoom noj. Cov txheej txheem suav nrog ob kauj ruam tseem ceeb:
- Catalytic oxidation ntawm ethylene rau ethylene oxide (EO)
- Kev ywg dej ntawm EO los tsim MEG
Vim nws cov tshuaj tiv thaiv ruaj khov thiab qib impurity tsawg, cov txheej txheem no tuaj yeem tsim MEG nrog purity siab dua 99.9%, ua tau raws li qhov yuav tsum tau muaj ntawm siab -kawg polyester thiab zoo tshuaj siv.
Cov dej tsis tshua muaj li cas -Ratio EO txheej txheem txhim kho kev ua haujlwm zoo?
Kev ua kom zoo dej tsawg- piv EO hydration txheej txheem tau txhim kho lub zog ua haujlwm thiab kev ua haujlwm ntau lawm.
Cov ntaub ntawv muaj qhia tias:
- Ethylene oxide conversion tus nqi: 97%
- MEG xaiv: 94%
Piv nrog rau cov dej siab ib txwm muaj- cov kab ke sib piv, cov molar piv ntawm EO rau cov dej demineralized yog tswj ntawm 1: 1 txog 1: 6, nyob rau hauv kev ua haujlwm ntawm 80-110℃thiab 1.0-1.5 MPa.Qhov no txo qis kev siv zog sib cais los ntawm ze li 30%.
Coal yog dab tsi?
Tuam Tshoj cov thee-raws li DMO syngas txoj kev yog lwm txoj kev tsim khoom uas txo MEG cov nqi tsim khoom los ntawm kwv yees li 15–20% piv nrog cov kev coj ua ethylene.
Cov txheej txheem no siv cov thee ua cov khoom siv tseem ceeb thiab suav nrog peb kauj ruam tseem ceeb:
- Coal gasification los tsim syngas
- Catalytic synthesis ntawm dimethyl oxalate (DMO)
- Hydrogenation los tsim MEG
Tam sim no, ob qho tib si atmospheric thiab nruab nrab-siab siab ntau lawm tshuab yog mature, nrog ib tug domestic khoom localization tus nqi nce mus txog 98%, txo qis kev vam khom rau txawv teb technologies.
Coal -raws li MEG ua li cas rau tus nqi ruaj ntseg?
Coal-raws li MEG qhia tau hais tias muaj zog tiv thaiv rau cov khoom siv raw cov nqi hloov pauv piv nrog cov kev siv petrochemical.
Cov ntaub ntawv lag luam qhia tias:
- Crude roj nqi hloov pauv: ~ 28% txhua xyoo
- Coal nqi hloov pauv: ~ 12% txhua xyoo
Qhov kev ruaj ntseg no ua rau cov thee-raws li MEG cov neeg tsim khoom muaj tus nqi kwv yees ntau dua, tshwj xeeb tshaj yog thaum lub caij poob qis. Nws kuj tseem pab kom ruaj khov thoob ntiaj teb MEG cov khoom siv thaum lub sijhawm tu lossis roj nqi nce ntxiv.
Lub Ntiaj Teb MEG Production Distribution yog dab tsi?
Ntiaj teb no MEG muaj peev xwm qhia meej cov qauv faib hauv cheeb tsam:
- Middle East & North America: kwv yees li 52% ntawm lub ntiaj teb petrochemical MEG muaj peev xwm, txhawb los ntawm cov nqi qis - nqi ethane thiab natural gas
- Tuam Tshoj: suav rau ntau dua 90% ntawm cov thee thoob ntiaj teb-raws li MEG peev
Qhov no tsim kom muaj kev sib koom ua ke thoob ntiaj teb:
- Cov cheeb tsam txawv teb chaws tsom rau siab -kev ua tau zoo petrochemical ntau lawm
- Tuam Tshoj tsom mus rau loj- nplai thee- raws li kev tsim tshuaj
Ua ke, lawv sib npaug thoob ntiaj teb MEG cov khoom thiab kev thov.
Yav tom ntej Trend ntawm MEG Manufacturing Technology yog dab tsi?
Hauv tsib xyoos tom ntej no, MEG kev tsim khoom yuav tsum tsom mus rau qib qis - carbon upgrading thiab ntse tshuab tsim.
Cov kev txhim kho tseem ceeb suav nrog:
- Cov pa roj carbon emission txo cov thee-raws li MEG xav kom ncav cuag ~ 22% los ntawm carbon capture thiab catalytic optimization
- Kev txhim kho txuas ntxiv ntawm kev siv hluav taws xob hauv EO hydration txheej txheem
- Kev nthuav dav ntawm ntsuab thee chemical technology
Cov kev txhim kho no yuav txhawb nqa kwv yees li 4% kev loj hlob txhua xyoo hauv ntiaj tebsiab -purity Mono Ethylene Glycolthov thiab ntxiv dag zog rau kev ruaj ntseg rau polyester, textile, thiab cov khoom siv tshiab industries.
