I-Monoethylene Glycol (MEG), enenombolo ye-Chemical Abstracts Service (CAS) engu-2219-51-4, iyikhemikhali ebalulekile yezimboni esetshenziswa kabanzi ekukhiqizweni kwemicu ye-polyester, ama-resin e-polyethylene terephthalate (PET), ama-antifreeze formulations, namanye amakhemikhali akhethekile. Njengezinto ezisetshenziswayo ezibalulekile ezimbonini eziningi, i-MEG idlala indima ebalulekile emaketangeni okuhlinzeka ngomhlaba wonke. Imakethe ye-MEG ibhekane noshintsho olukhulu eminyakeni yamuva ngenxa yokushintsha kwamaphethini okufunwa, ukuguquguquka kwe-feedstock, kanye nezindawo zomthetho ezishintshayo. Lesi sihloko sihlola isimo samanje semakethe kanye nezitayela zesikhathi esizayo ezibumba imboni ye-MEG.
Isimo Semakethe Samanje
1. Isidingo Esikhulayo Esivela Ezimbonini Ze-Polyester kanye Neze-PET**
Ukusetshenziswa okukhulu kwe-MEG kusekukhiqizweni kwemicu ye-polyester kanye nama-resin e-PET, asetshenziswa kakhulu ezindwangu, ekupakisheni, nasemabhodleleni eziphuzo. Njengoba ukusetshenziswa kwezimpahla ezipakishiwe kanye nezindwangu zokwenziwa kukhula, ikakhulukazi emazweni asafufusa, isidingo se-MEG sisalokhu siqinile. Isifunda sase-Asia-Pacific, esiholwa yiShayina neNdiya, siyaqhubeka nokubusa ukusetshenziswa ngenxa yokukhula kwezimboni okusheshayo kanye nokukhula kwamadolobha.
Ngaphezu kwalokho, ukushintshela ezixazululweni zokupakisha ezisimeme kukhuphule ukusetshenziswa kwe-PET ephinde yasetshenziswa (rPET), okusekela ngokungaqondile isidingo se-MEG. Kodwa-ke, imboni ibhekene nezinselelo ezivela emananini kawoyela ongahluziwe ashintshashintshayo, njengoba i-MEG itholakala kakhulu ku-ethylene, okuwukudla okusekelwe kuphethiloli.
2. Izicelo Zokuvimbela Ukuqandisa kanye Nezokupholisa
I-MEG iyisici esibalulekile ekwakhiweni kwe-antifreeze kanye ne-coolant, ikakhulukazi ezinhlelweni zezimoto kanye ne-HVAC. Ngenkathi isidingo esivela kulo mkhakha sihlala sizinzile, ukwanda kwezimoto zikagesi (ama-EV) kuletha amathuba nezinselele. Izimoto zendabuko zenjini yokushisa yangaphakathi zidinga i-antifreeze esekelwe ku-MEG, kodwa ama-EV asebenzisa ubuchwepheshe obuhlukile bokupholisa, obungashintsha ukuguquguquka kwesidingo sesikhathi eside.
3. Uchungechunge Lokunikezela kanye Nentuthuko Yokukhiqiza
Ukukhiqizwa kwe-MEG emhlabeni wonke kugxile ezifundeni ezine-ethylene eningi, njengeMpumalanga Ephakathi, eNyakatho Melika, nase-Asia. Ukwanda kwamuva kwamandla e-ethylene, ikakhulukazi e-US naseShayina, kuthuthukise ukutholakala kwe-MEG. Kodwa-ke, ukuphazamiseka kwempahla, ukungezwani kwezepolitiki, kanye nokuguquguquka kwentengo yamandla kuyaqhubeka nomthelela ekuzinzeni kokunikezwa.
Imithethonqubo yemvelo nayo ithonya izindlela zokukhiqiza. Abakhiqizi baqhubeka behlola i-MEG esekelwe ku-bio etholakala kumoba noma ummbila njengendlela ehlukile eqhubekayo esikhundleni se-MEG esekelwe ku-petroleum. Nakuba i-bio-MEG okwamanje inesabelo esincane semakethe, ukwamukelwa kwayo kulindeleke ukuthi kukhule njengoba izimboni zibeka phambili ukunciphisa ukunyatheliswa kwekhabhoni.
Izitayela Zemakethe Zesikhathi Esizayo
1. Izinhlelo Zokuzinza Nomnotho Ojikelezayo
Ukucindezela kokusimama kushintsha imakethe ye-MEG. Abasebenzisi abakhulu, ikakhulukazi embonini yokupakisha kanye neyendwangu, bangaphansi kwengcindezi yokwamukela izinto ezinobungani nemvelo. Lokhu kuholele ekutshalweni kwezimali okwandisiwe kubuchwepheshe bokuvuselela kabusha be-MEG obusekelwe ku-bio kanye namakhemikhali aguqula imfucuza ye-PET ibe yi-MEG kanye ne-purified terephthalic acid (PTA).
Ohulumeni kanye nezinhlangano ezilawulayo basebenzisa izinqubomgomo eziqinile mayelana nemfucuza yepulasitiki, okuqhubekisela phambili isidingo sezinto ezingasetshenziswa kabusha nezibolayo. Izinkampani ezingahambisana nale migomo yokuzinza cishe zizothola ithuba lokuncintisana eminyakeni ezayo.
2. Intuthuko Yezobuchwepheshe Ekukhiqizeni
Ukusungula izinto ezintsha ezinqubweni zokukhiqiza ze-MEG kulindeleke ukuthi kuthuthukise ukusebenza kahle futhi kunciphise umthelela emvelweni. Ubuchwepheshe be-Catalytic obunciphisa ukusetshenziswa kwamandla kanye nokukhishwa kwegesi kuyathuthukiswa. Ngaphezu kwalokho, intuthuko ekubanjweni nasekusetshenzisweni kwekhabhoni (i-CCU) ingenza ukukhiqizwa kwe-MEG okusekelwe ezinsaleleni kube okuzinzile kakhudlwana.
Esinye isimo esikhulayo ukuhlanganiswa kobuchwepheshe bedijithali njenge-AI kanye ne-IoT ezitshalweni zokukhiqiza ukuze kwandiswe isivuno sokukhiqiza futhi kuncishiswe isikhathi sokungasebenzi. Lokhu kusungula izinto ezintsha kungaholela ekukhiqizweni kwe-MEG okungabizi kakhulu nokuluhlaza ngokuhamba kwesikhathi.
3. Ushintsho Kwesidingo Sesifunda kanye Nokugeleza Kwezohwebo
I-Asia-Pacific izohlala ingumthengi omkhulu we-MEG, eqhutshwa ukwanda kwezimboni zezindwangu kanye nokupakisha. Kodwa-ke, i-Afrika kanye neNingizimu-mpumalanga ye-Asia ziyavela njengezimakethe ezintsha ezikhula ngenxa yokwanda kwezimboni kanye nokukhula kwamadolobha.
Izinguquko kwezentengiselwano nazo ziyashintsha. Nakuba iMpumalanga Ephakathi isalokhu ingumthengisi omkhulu ngenxa ye-ethylene yayo eshibhile, iNyakatho Melika iqinisa isikhundla sayo nge-ethylene etholakala kugesi we-shale. Okwamanje, iYurophu igxile kwi-MEG esekelwe ku-bio futhi ephinde yasetshenziswa ukuze ihlangabezane nezinhloso zayo zokuzinza, okungenzeka kuncishiswe ukuthembela ekungenisweni kwempahla kwamanye amazwe.
4. Umthelela Wezimoto Zikagesi Nobuchwepheshe Obuhlukile
Ukushintshela komkhakha wezimoto kuma-EV kunganciphisa isidingo sendabuko sokuvimbela ukuqandisa, kodwa amathuba amasha angavela ezinhlelweni zokuphatha ukushisa kwebhethri. Ucwaningo luyaqhubeka ukuze kutholakale ukuthi ngabe ama-MEG noma ama-coolant ahlukile azothandwa yini kuma-EV esizukulwane esilandelayo.
Ngaphezu kwalokho, ukuthuthukiswa kwezinto ezingasetshenziswa, njengepulasitiki ebolayo, kungancintisana noma kuhambisane nemikhiqizo esekelwe ku-MEG. Ababambiqhaza embonini kumele baqaphele lezi zindlela ukuze bavumelanise amasu abo ngokufanele.
Imakethe yomhlaba wonke ye-Monoethylene Glycol (MEG) ishintsha kakhulu ngenxa yokushintsha kwamaphethini esidingo, izingcindezi zokusimama, kanye nentuthuko yezobuchwepheshe. Ngenkathi ukusetshenziswa kwendabuko ku-polyester kanye ne-antifreeze kusalokhu kubusa, imboni kumele izivumelanise nezitayela ezintsha ezifana nokukhiqizwa okusekelwe ku-bio, amamodeli omnotho ojikelezayo, kanye nokuguquguquka kwesifunda okushintshayo. Izinkampani ezitshala imali emikhubeni eqhubekayo kanye nobuchwepheshe obusha zizoba sesimweni esihle sokuchuma endaweni eguqukayo ye-MEG.
Njengoba umhlaba usondela ezixazululweni eziluhlaza, indima ye-MEG emnothweni osebenzisa ikhabhoni ephansi izoncika ekutheni imboni izilinganisela kanjani izindleko, ukusebenza, kanye nomthelela wemvelo ngempumelelo. Ababambiqhaza kulo lonke uchungechunge lwenani kumele babambisane ukuqinisekisa ukukhula kwesikhathi eside kanye nokuqina kule makethe ebalulekile yamakhemikhali.
Isikhathi sokuthunyelwe: Agasti-22-2025