Ngomhla woku-1 kuJulayi, ngo-2022, umsitho wokuqalisa kwesigaba sokuqala seetoni ezingama-300,000.imethyl methacrylate(emva koku kubhekiselwa kuyo njenge-methyl methacrylate) Iprojekthi ye-MMA ye-Henan Zhongkepu Raw kunye ne-New Materials Co., Ltd. yabanjwa e-Puyang Economic and Technological Development Zone, iphawula ukusetyenziswa kweseti entsha yokuqala ye-ionic liquid catalytic ethylene MMA iteknoloji ephuhliswe ngokuzimeleyo yi-CAS kunye neZhongyuan Dahua. Esi sisityalo sokuqala se-ethylene MMA esipapashwe eChina. Ukuba izixhobo zifakwe ngempumelelo kwimveliso, iya kufezekisa impumelelo kwimveliso ye-ethylene ye-MMA yaseTshayina, enempembelelo ebaluleke kakhulu kwishishini le-MMA.
Iyunithi yesibini ye-MMA yenkqubo ye-ethylene e-China inokupapashwa eShandong. Ekuqaleni kulindeleke ukuba ifakwe kwimveliso malunga no-2024, kwaye okwangoku ikwinqanaba lokuqala lokuvunywa. Ukuba iyunithi yinyani, iya kuba yiyunithi yesibini ye-MMA yenkqubo ye-ethylene e-China, ebaluleke kakhulu kwi-diversification yenkqubo yemveliso ye-MMA e-China kunye nophuhliso loshishino lwemichiza yase-China.
Ngokutsho kwedatha efanelekileyo, kukho iinkqubo ezilandelayo zokuvelisa i-MMA e-China: inkqubo ye-C4, inkqubo ye-ACH, inkqubo ye-ACH ephuculweyo, inkqubo ye-BASF ethylene kunye nenkqubo ye-Lucite ethylene. Ehlabathini lonke, ezi nkqubo zokuvelisa zinofakelo lwamashishini. E-China, umthetho we-C4 kunye nomthetho we-ACH uphuculwe, ngelixa umthetho we-ethylene awuzange uphuhliswe ngokupheleleyo.
Kutheni imveliso yeekhemikhali yaseTshayina ikhulisa isityalo sayo se-ethylene MMA? Ngaba ixabiso lemveliso ye-MMA eveliswa yindlela ye-ethylene iyakhuphisana?
Okokuqala, isityalo se-ethylene MMA senze i-blank e-China kwaye inezinga eliphezulu lokuvelisa iteknoloji. Ngokutsho kophando, kukho iiseti ezimbini kuphela zeeyunithi ze-ethylene MMA emhlabeni, ezifumaneka eYurophu naseMntla Melika ngokulandelelanayo. Iimeko zobugcisa zeeyunithi ze-ethylene MMA zilula. Izinga lokusetyenziswa kweathom lingaphezulu kwama-64%, kwaye isivuno siphezulu kunezinye iintlobo zenkqubo. I-BASF kunye noLucite benze uphando lobuchwephesha kunye nophuhliso lwezixhobo ze-MMA zenkqubo ye-ethylene kwangethuba, kwaye bafezekise ushishino.
Iyunithi yenkqubo ye-ethylene ye-MMA ayithathi nxaxheba kwizinto ezine-acidic ekrwada, nto leyo ekhokelela kwi-corrosion ephantsi yezixhobo, inkqubo yemveliso ehambelana nokusingqongileyo, kunye nexesha elide lokusebenza kunye nomjikelo. Kule meko, ixabiso lokuhla kwexabiso leyunithi ye-MMA kwinkqubo ye-ethylene ngexesha lokusebenza liphantsi kunezinye iinkqubo.
Izixhobo ze-Ethylene MMA nazo zineengxaki. Okokuqala, izibonelelo ezixhasayo zezityalo ze-ethylene zifunekayo, apho i-ethylene ininzi iveliswa zizityalo ezidibeneyo, ngoko ke ukuxhasa uphuhliso lwamashishini adibeneyo afunekayo. Ukuba i-ethylene ithengwa, uqoqosho lubi. Okwesibini, kukho iiseti ezimbini kuphela ze-ethylene MMA izixhobo ehlabathini. Iiprojekthi zaseTshayina ezisakhiwayo zisebenzisa itekhnoloji ye-Academy yaseTshayina yeSayensi, kwaye amanye amashishini akakwazi ukufumana itekhnoloji ngokulula nangempumelelo. Okwesithathu, izixhobo ze-MMA zenkqubo ye-ethylene zinenkqubo ende yokuhamba, isikali esikhulu sotyalo-mali, isixa esikhulu seklorini equlethe amanzi amdaka aya kuveliswa kwinkqubo yokuvelisa, kwaye iindleko zokunyanga iinkunkuma ezintathu ziphezulu.
Okwesibini, ukukhuphisana kweendleko zeyunithi ye-MMA ngokuyinhloko ivela kwi-ethylene exhasayo, ngelixa i-ethylene yangaphandle ingenayo inzuzo ecacileyo yokhuphiswano. Ngokophando, iyunithi ye-MMA yendlela ye-ethylene yi-0.4294 yeetoni ze-ethylene, iitoni eziyi-0.387 ze-methanol, i-661.35 Nm ³ igesi yokwenziwa, iitoni eziyi-1.0578 zeklorini ekrwada ziveliswa yi-co reaction, kwaye akukho mveliso ye-methacrylic acid kwinkqubo yokuvelisa.
Ngokutsho kwedatha efanelekileyo ekhutshwe yi-Shanghai Yunsheng Chemical Technology Co., Ltd., iindleko ze-MMA zendlela ye-ethylene malunga ne-12000 yuan / ton xa i-ethylene i-8100 yuan / ton, i-methanol yi-2140 yuan / ton, igesi yokwenziwa yi-1.95 yuan / i-klorine ye-cubic 600 yemitha kunye ne-klorini ye-cubic 600. Xa kuthelekiswa nexesha elifanayo, iindleko zomthetho zeC4 indlela kunye nendlela ye-ACH ziphezulu. Ngoko ke, ngokweemeko zemarike zangoku, i-ethylene MMA ayinakho ukhuphiswano olucacileyo lwezoqoqosho.
Nangona kunjalo, ukuveliswa kwe-MMA ngendlela ye-ethylene kunokwenzeka ukuba ihambelane nemithombo ye-ethylene. I-ethylene ngokusisiseko isuka kwi-naphtha yokuqhekeka, i-coal synthesis, njl. Kule meko, ukukhuphisana kokuveliswa kwe-MMA ngendlela ye-ethylene kuya kuchaphazeleka kakhulu kwiindleko ze-ethylene. Ukuba i-ethylene imathiriyeli ekrwada inikezelwa ngokwazo, kufuneka ibalwe ngokusekelwe kwixabiso lexabiso le-ethylene, eliya kuphucula kakhulu ukukhuphisana kweendleko ze-ethylene MMA.
Okwesithathu, i-ethylene i-MMA idla i-chlorine eninzi, kwaye ixabiso kunye nobudlelwane obuxhasayo be-chlorine luya kugqiba isitshixo kukhuphiswano lweendleko ze-ethylene MMA. Ngokweenkqubo zokuvelisa ze-BASF kunye noLucite, zombini ezi nkqubo kufuneka zidle isixa esikhulu seklorini. Ukuba iklorine inobudlelwane bayo obuxhasayo, iindleko zeklorini ayifuni kuqwalaselwa, okuya kuphucula kakhulu ukukhuphisana kweendleko ze-ethylene MMA.
Okwangoku, i-ethylene MMA iye yatsala ingqalelo ethile ikakhulu ngenxa yokukhuphisana kweendleko zemveliso kunye nemeko epholileyo yokusebenza yeyunithi. Ukongeza, iimfuno zokuxhasa imathiriyeli ekrwada nazo zihambelana nendlela yophuhliso lwangoku lweshishini lemichiza laseTshayina. Ukuba ishishini lixhasa i-ethylene, i-chlorine kunye negesi ye-synthesis, i-ethylene MMA inokuba yeyona ndlela yokuvelisa i-MMA ekhuphisanayo ngoku. Okwangoku, indlela yophuhliso yoshishino lweekhemikhali zaseTshayina ikakhulu zizixhobo zokuxhasa ezibanzi. Ngaphantsi kwalo mkhwa, indlela ye-ethylene ehambelana ne-ethylene MMA ingaba yingqwalasela yoshishino.