MMA, inozivikanwa zvizere semethyl methacrylate, chinhu chakakosha mbishi kugadzirwa kwepolymethyl methacrylate (PMMA), iyo inowanzozivikanwa se acrylic. Nekuvandudzwa kwePMMA's indasitiri kugadzirisa, kusimudzira kweMMA indasitiri cheni yakasundidzirwa kumashure. Maererano neongororo, kune matatu makuru ekugadzira maitiro eMMA, ayo acetone cyanohydrin nzira (ACH nzira), ethylene carbonylation nzira uye isobutylene oxidation nzira (C4 nzira). Parizvino, nzira yeACH uye nzira yeC4 inonyanya kushandiswa mumabhizinesi ekugadzira eChinese, uye hapana indasitiri yekugadzira indasitiri ye ethylene carbonylation nzira.

Yedu yekudzidza yeMMA kukosha kweketani inoongorora ari pamusoro matatu ekugadzira maitiro uye iyo huru yakadzika PMMA mutengo halo zvichiteerana.

Mufananidzo 1 Inoyerera chati yeMMA indasitiri cheni ine maitiro akasiyana (Mufananidzo sosi: Chemical Indasitiri)

Indasitiri cheni I: ACH nzira yeMMA kukosha kweketani
Mukugadzirwa kweACH nzira yeMMA, iyo mikuru yezvigadzirwa ndeye acetone uye hydrocyanic acid, uko hydrocyanic acid inogadzirwa ne-chigadzirwa cheacrylonitrile, uye yekubatsira methanol, saka indasitiri inowanzo shandisa acetone, acrylonitrile uye methanol semutengo wekuverenga. kuumbwa kwezvinhu zvakasvibiswa. Pakati pavo, 0.69 matani eacetone uye 0,32 matani eacrylonitrile uye 0.35 matani emethanol anoverengwa seyuniti inoshandiswa. Mumutengo wekugadzirwa kweACH nzira yeMMA, acetone cost accounts yechikamu chikuru, ichiteverwa nehydrocyanic acid inogadzirwa ne-product ye acrylonitrile, uye methanol inotora chikamu chiduku.

Zvinoenderana nemutengo wekuenzanisa bvunzo yeacetone, methanol uye acrylonitrile mumakore matatu apfuura, zvinoonekwa kuti kuwirirana kweACH nzira yeMMA neacetone inosvika 19%, ine methanol inenge 57% uye maererano neacrylonitrile inenge 18%. Zvinogona kuonekwa kuti pane musiyano pakati peizvi uye mari yemugove muMMA, apo chikamu chepamusoro cheacetone chemutengo weMMA hachigoni kuratidzirwa mukuchinja kwayo kwemutengo pamutengo wekuchinja kweACH nzira yeMMA, nepo kushanduka kwemitengo. yemethanol ine simba rakakura pamutengo weMMA pane acetone.

Nekudaro, iyo mari yemethanol inongosvika pa7%, uye mutengo weacetone ungangoita 26%. Kuti udzidze kukosha kweketani yeMMA, zvinonyanya kukosha kutarisa mutengo wekuchinja kweacetone.

Pakazere, kukosha kweketani yeACH MMA kunonyanya kunobva kumutengo wekuchinja kweacetone uye methanol, pakati peiyo acetone ine simba guru pakukosha kweMMA.

Indasitiri cheni II: C4 nzira yeMMA kukosha kweketani

Kune kukosha kweketani yeC4 nzira yeMMA, zvigadzirwa zvayo isobutylene uye methanol, pakati peiyo isobutylene ndeyepamusoro-kuchena isobutylene chigadzirwa, chinobva kuMTBE kupaza kugadzirwa. Uye methanol chigadzirwa cheindasitiri methanol, chinobva mukugadzirwa kwemarasha.

Zvinoenderana nemutengo wekuumbwa kweC4 MMA, iyo inosiyana mutengo isobutene unit yekushandisa ndeye 0.82 uye methanol i0.35. Nekufambira mberi kwevanhu vose vari mukugadzira teknolojia, kushandiswa kwechikwata kwakaderedzwa kusvika ku0.8 mumhizha, iyo yakaderedza mari yeC4 MMA kune imwe nzvimbo. Zvimwe zvacho zvinodhura zvakatemwa, zvakaita semitengo yemvura, magetsi negasi, mari dzemari, mari yekuchenesa tsvina nezvimwe.

Mune izvi, chikamu chepamusoro-kuchena isobutylene mumutengo weMMA inenge 58%, uye chikamu che methanol mumutengo weMMA inenge 6%. Zvinogona kuonekwa kuti isobutene ndiyo inodhura yakawanda yakasiyana-siyana muC4 MMA, apo mutengo wekutengesa isobutene une simba guru pamutengo weC4 MMA.

Iko kukosha kweketani yehutsanana hwepamusoro isobutene inoteedzerwa kumashure kwemutengo wekuchinja kweMTBE, iyo inoshandisa 1.57 unit kushandiswa uye inodarika 80% yemutengo wekuchena kwakanyanya isobutene. Mutengo weMTBE unobva kune methanol uye pre-ether C4, uko kuumbwa kwepre-ether C4 kunogona kubatanidzwa kune feedstock yeketani yakakosha.

Pamusoro pezvo, zvinofanirwa kucherechedzwa kuti kuchena kwakanyanya isobutene kunogona kugadzirwa ne tert-butanol dehydration, uye mamwe mabhizinesi achashandisa tert-butanol sehwaro hweMMA mutengo wekuverenga, uye iyo unit kushandiswa kwetert-butanol ndeye 1.52. Maererano nekuverenga kwe tert-butanol 6200 yuan/ton, tert-butanol inotora 70% yeMMA mutengo, iyo yakakura kudarika isobutene.

Mune mamwe mazwi, kana mutengo wekubatanidza we tert-butanol ukashandiswa, kushanduka kwekukosha kweketani yeC4 nzira yeMMA, simba rinorema re tert-butanol rakakura kudarika isobutene.

Kupfupisa, muC4 MMA, huremu hwehuremu hwekuchinja kwehuremu hunoiswa kubva kumusoro kusvika pasi: tert-butanol, isobutene, MTBE, methanol, mafuta asina kuchena.

Indasitiri cheni III: Ethylene carbonylation MMA kukosha kweketani

Iko hakuna indasitiri yekugadzira kesi yeMMA ne ethylene carbonylation muChina, saka kukanganisa kwekukosha kwekuchinja hakugone kufungidzirwa nekugadzirwa chaiko kwemaindasitiri. Zvisinei, maererano neyuniti inoshandiswa ethylene mu ethylene carbonylation, ethylene ndiyo inonyanya kukosha mari paMMA mutengo wekuumbwa kwechiitiko ichi, chinodarika 85%.

 
Indasitiri cheni IV: PMMA kukosha kweketani

PMMA, sechigadzirwa chikuru chepasi cheMMA, inodarika 70% yegore negore kushandiswa kweMMA.

Zvinoenderana neiyo kukosha kweketani kuumbwa kwePMMA, umo iyo yekushandisa unit yekushandisa yeMMA iri 0.93, MMA inoverengerwa zvinoenderana ne13,400 yuan/ton uye PMMA inoverengerwa zvinoenderana ne15,800 yuan/ton, iyo inoshanduka mutengo weMMA muPMMA account yeanenge. 79%, inova chikamu chepamusoro.

Mune mamwe mazwi, kuderera kwemutengo weMMA kune simba rakasimba pakuchinja kwekukosha kwePMMA, inova simba rekubatanidza. Zvinoenderana nekuwirirana kwekushanduka kwemitengo pakati pezviviri mumakore matatu apfuura, kuwirirana pakati pezviviri izvi kunodarika 82%, iyo ndeye pesvedzero yekubatana kwakasimba. Naizvozvo, kuderera kwemutengo weMMA kuchakonzera kuderera kwemutengo wePMMA munzira imwechete ine mukana wakakura.