NgoJulayi 1, 2022, umcimbi wokuqalisa kwesigaba sokuqala samathani angama-300,000i-methyl methacrylate(ngemuva kwalokhu ebizwa ngokuthi i-methyl methacrylate) iphrojekthi ye-MMA ye-Henan Zhongkepu Raw and New Materials Co., Ltd. yayibanjelwe e-Puyang Economic and Technological Development Zone, iphawula ukusetshenziswa kwesethi yokuqala entsha yobuchwepheshe be-ionic liquid catalytic ethylene MMA eyakhiwe ngokuzimela I-CAS ne-Zhongyuan Dahua. Lesi futhi isitshalo sokuqala se-ethylene MMA esashicilelwa eChina. Uma imishini ifakwa ngempumelelo ekukhiqizweni, izofinyelela impumelelo ekukhiqizeni i-ethylene MMA yaseChina, enomthelela obaluleke kakhulu embonini ye-MMA.
Iyunithi yesibili ye-MMA yenqubo ye-ethylene e-China ingase ivezwe e-Shandong. Ekuqaleni kulindeleke ukuthi ifakwe ekukhiqizweni cishe ngo-2024, futhi njengamanje isesigabeni sokuqala sokugunyazwa. Uma iyunithi iyiqiniso, izoba iyunithi yesibili ye-MMA yenqubo ye-ethylene e-China, ebaluleke kakhulu ekuhlukaniseni inqubo yokukhiqiza ye-MMA e-China kanye nokuthuthukiswa kwemboni yamakhemikhali yase-China.
Ngokusho kwedatha efanele, kunezinqubo ezilandelayo zokukhiqiza i-MMA e-China: inqubo ye-C4, inqubo ye-ACH, inqubo ye-ACH ethuthukisiwe, inqubo ye-BASF ethylene kanye nenqubo ye-Lucite ethylene. Emhlabeni jikelele, lezi zinqubo zokukhiqiza zinokufakwa kwezimboni. E-China, umthetho we-C4 kanye nomthetho we-ACH kwenziwe ngezimboni, kanti umthetho we-ethylene awukakathuthukiswa ngokugcwele.
Kungani imboni yamakhemikhali yaseChina inweba isitshalo sayo se-ethylene MMA? Ingabe izindleko zokukhiqiza ze-MMA ezikhiqizwa indlela ye-ethylene ziyaqhudelana?
Okokuqala, isitshalo se-ethylene MMA sidale isikhala e-China futhi sinezinga eliphezulu lobuchwepheshe bokukhiqiza. Ngokusho kocwaningo, kunamasethi amabili kuphela amayunithi e-ethylene MMA emhlabeni, atholakala eYurophu naseNyakatho Melika ngokulandelana. Izimo zobuchwepheshe zamayunithi e-ethylene MMA zilula. Izinga lokusebenzisa i-athomu lingaphezu kuka-64%, futhi isivuno siphezulu kunezinye izinhlobo zenqubo. I-BASF kanye noLucite benze ucwaningo lwezobuchwepheshe kanye nokuthuthukiswa kwemishini ye-MMA yenqubo ye-ethylene kusenesikhathi, futhi bathola ukuthuthukiswa kwezimboni.
Iyunithi ye-MMA yenqubo ye-ethylene ayihlanganyeli ezintweni zokusetshenziswa ezine-asidi, okuholela nasekugqwaleni okuphansi kwemishini, inqubo yokukhiqiza evumelana nemvelo, kanye nesikhathi eside sokusebenza kanye nomjikelezo. Kulokhu, izindleko zokwehla kweyunithi ye-MMA kunqubo ye-ethylene ngesikhathi sokusebenza ziphansi kunezinye izinqubo.
Imishini ye-Ethylene MMA nayo inemibi. Okokuqala, izinsiza ezisekela izitshalo ze-ethylene ziyadingeka, lapho i-ethylene ikhiqizwa kakhulu izitshalo ezihlanganisiwe, ngakho-ke ukusekela ukuthuthukiswa kwamabhizinisi ahlanganisiwe kuyadingeka. Uma i-ethylene ithengwa, umnotho umpofu. Okwesibili, kunamasethi amabili kuphela emishini ye-ethylene MMA emhlabeni. Amaphrojekthi aseShayina asakhiwayo asebenzisa ubuchwepheshe be-Chinese Academy of Sciences, kanti amanye amabhizinisi awakwazi ukuthola ubuchwepheshe kalula nangempumelelo. Okwesithathu, imishini ye-MMA yenqubo ye-ethylene inokugeleza kwenqubo ende, isikali esikhulu sokutshala izimali, inani elikhulu le-chlorine eliqukethe amanzi angcolile lizokhiqizwa ohlelweni lokukhiqiza, futhi izindleko zokwelashwa kwemfucuza emithathu ziphezulu.
Okwesibili, ukuncintisana kwezindleko zeyunithi ye-MMA ngokuyinhloko kuvela ku-ethylene esekelayo, kuyilapho i-ethylene yangaphandle ingenayo inzuzo esobala yokuncintisana. Ngokophenyo, iyunithi ye-MMA yendlela ye-ethylene ingamathani angu-0.4294 e-ethylene, amathani angu-0.387 e-methanol, 661.35 Nm ³ igesi yokwenziwa, amathani angu-1.0578 e-chlorine eluhlaza akhiqizwa ngokusabela okuhlangene, futhi awukho umkhiqizo we-methacrylic acid ekukhiqizeni. .
Ngokwemininingwane efanele ekhishwe yi-Shanghai Yunsheng Chemical Technology Co., Ltd., izindleko ze-MMA zendlela ye-ethylene cishe i-12000 yuan/ton uma i-ethylene ingu-8100 yuan/ton, i-methanol ingu-2140 yuan/ton, igesi yokwenziwa ingu-1.95 yuan/ cubic meter, kanye ne-chlorine engahluziwe ingama-yuan angama-600/ton. Uma kuqhathaniswa nesikhathi esifanayo, izindleko zomthetho zendlela ye-C4 kanye nendlela ye-ACH ziphezulu. Ngakho-ke, ngokwezimo zemakethe zamanje, i-ethylene MMA ayinakho ukuncintisana kwezomnotho okusobala.
Kodwa-ke, ukukhiqizwa kwe-MMA ngendlela ye-ethylene kungenzeka kuhambisane nezinsiza ze-ethylene. I-Ethylene ngokuyisisekelo isuka ekuqhekekeni kwe-naphtha, ukuhlanganiswa kwamalahle, njll. Kulesi simo, ukuncintisana kokukhiqizwa kwe-MMA ngendlela ye-ethylene kuzothinteka kakhulu ngezindleko ze-ethylene eluhlaza. Uma i-ethylene eluhlaza ihlinzekwa ngokwayo, kufanele ibalwe ngokusekelwe kwintengo yezindleko ze-ethylene, okuzokwenza ngcono kakhulu ukuncintisana kwezindleko ze-ethylene MMA.
Okwesithathu, i-ethylene MMA idla i-chlorine eningi, futhi intengo nobuhlobo obusekelayo be-chlorine kuzophinde kunqume isihluthulelo sokuncintisana kwezindleko ze-ethylene MMA. Ngokwezinqubo zokukhiqiza ze-BASF ne-Lucite, zombili lezi zinqubo zidinga ukudla inani elikhulu le-chlorine. Uma i-chlorine inobudlelwane bayo obusekelayo, izindleko ze-chlorine akudingeki zicatshangelwe, okuzokwenza ngcono kakhulu ukuncintisana kwezindleko ze-ethylene MMA.
Njengamanje, i-ethylene MMA idonse ukunaka okuthile ikakhulukazi ngenxa yokuncintisana kwezindleko zokukhiqiza kanye nendawo yokusebenza ethambile yeyunithi. Ngaphezu kwalokho, izidingo zokweseka izinto ezingavuthiwe nazo zihambisana nendlela yamanje yokuthuthukiswa kwemboni yamakhemikhali yaseChina. Uma ibhizinisi lisekela i-ethylene, i-chlorine negesi yokuhlanganiswa, khona-ke i-ethylene MMA ingaba imodi yokukhiqiza ye-MMA encintisana kakhulu okwamanje. Njengamanje, imodi yokuthuthukiswa kwemboni yamakhemikhali yaseChina ngokuyinhloko ihlanganisa izinsiza ezisekelayo. Ngaphansi kwalo mkhuba, indlela ye-ethylene ehambisana ne-ethylene MMA ingase ibe yinto okugxilwe kuyo embonini.