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 Technology Development Zone, iphawula ukusetyenziswa kweseti entsha yokuqala ye-ionic liquid catalytic ethylene MMA technology ephuhliswe ngokuzimeleyo ngu. I-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, i-0.387 yeetoni ze-methanol, i-661.35 Nm ³ igesi ye-Synthetic, i-1.0578 yeetoni ze-chlorine ekrwada ziveliswa yi-co reaction, kwaye akukho mveliso ye-methacrylic acid kwinkqubo yokuvelisa. .
Ngokweenkcukacha ezifanelekileyo ezikhutshwe yi-Shanghai Yunsheng Chemical Technology Co., Ltd., iindleko ze-MMA zendlela ye-ethylene imalunga ne-12000 yuan/toni xa i-ethylene iyi-8100 yuan/ton, imethanol yi-2140 yuan/ton, igesi yokwenziwa yi-1.95 yuan/ cubic meter, kunye neklorini ekrwada yi 600 yuan/toni.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.