Methyl Methacrylate (MMA) yog cov khoom siv organic, moulding monomer, thiab lwm yam khoom siv hluav taws xob, cov ntaub ntawv hluav taws xob, fiber ntau cov tshuaj hauv hluav taws xob, fiber ntau, cov khoom siv kho mob, hlau thiab lwm thaj teb.

Raws li cov ntaub ntawv monomer, MMA feem ntau yog siv nyob rau hauv kev tsim cov khoom siv hluav taws xob (PVC) ntxiv rau ACL, MBS thiab raws li tus monomer thib ob hauv kev tsim cov acrylics.

Tam sim no, muaj peb hom kev paub tab rau kev tsim cov MMA tom tsev thiab txawv teb chaws txheej txheem (MethapingLene oxidation anteration oxidation esterurrile

1, MetharryLabide Hydrolysis Esterification Txoj Kev
Txoj kev no yog cov tsoos MMA ntau lawm hom, suav nrog acetone cyetone cov qauv, ob qho tib si methamrylonidrile hydriav thiab Esterification synthesis ntawm MMA.

(1) acetone cyanohydrin hom (ach txoj kev)

Txoj kev Ach, thawj zaug tsim los ntawm Asmeskas cov qauv ntawm MMA, yog cov txheej txheem ntau tshaj plaws hauv lub ntiaj teb. Cov qauv no siv acetone, hydrocyanic acid, thiab methanol ua cov khoom siv raw xws li, thiab cov tshuaj tiv thaiv raw, kev pom zoo thiab cov tshuaj tiv thaiv hydrourical.

ACH txheej txheem yog technically loj, tab sis muaj cov hauv qab no qhov tsis zoo:

○ Kev siv ntawm hydrocyanic acid, uas yuav tsum tau tiv thaiv kev tiv thaiv nruj thaum lub sijhawm tsheb thauj khoom thiab siv;

○ los ntawm kev tsim khoom ntawm cov nyiaj muaj kua qaub loj (a aonium bisulfate raws li lub ntsiab lus tseem ceeb ntawm MMA, thiab yog ib qho chaw muaj kuab paug ntawm ib puag ncig;

o Vim tias siv cov sulfuric acid, tiv thaiv cov cuab yeej ua kom tsis taus, thiab kev tsim kho ntawm cov cuab yeej kim.

(2) metharumrylonitrile txoj kev (txiv neej txoj kev)

Asahi Kasei tau tsim cov methamrylonitrile (tus txiv neej) ua rau cov neeg me, uas yog cov txiv neej ua haujlwm, uas yog cov sulfuric acid thiab methanol los ua mma. Tus txiv neej txoj kev suav nrog ammonia oxidation kev tawm tsam, kev tawm tsam thiab cov tshuaj tiv thaiv hydrourysistification, thiab tuaj yeem siv cov khoom siv ntawm ACH feem ntau. Cov tshuaj tiv thaiv hydrolysis siv ntau dhau sulfuric acid, thiab cov txiaj ntsig ntawm cov metriat methlacrylamide yog yuav luag 100%. Txawm li cas los xij, tus qauv tau muaj kuab lom hydrocyanic acid los ntawm cov khoom lag luam, cov khoom siv sullocyanic yog cov khoom txaus siab heev, thaum cov kev phom sij ib puag ncig muaj kev phom sij.

2, Isobutylene oxidation txoj kev
Isobutylene oxidation tau nyiam cov thev naus laus zis tshiab rau cov tuam txhab loj hauv ntiaj teb no, tab sis tsuas yog Nyiv ib puag ncig yog qhov siab thev naus laus zis thiab tsuas yog Nyiv ib puag ntej muaj kev thev naus laus zis thiab tsis muaj cuab yeej cuab tam Cov qauv suav nrog ob hom Mitsubishi thiab Asahi Kasei txheej txheem.

(1) cov txheej txheem (isobutylene peb-kauj ruam txoj kev)

Nyiv khawm tus txheej txheem tshiab los tsim cov mmingylene lossis tert-butanol ua cov mab me me acid (maa), thiab tom qab ntawd ua haujlwm nrog methanol. Tom qab muaj kev lag luam ntawm Mitsubishi Rayon, Nyiv Asahi Kusi tuam txhab, Nyiv Kyoto Monomer Company, Kauslim muaj txiaj ntsig, thiab lwm yam. Lub tuam tsev Shanghai Huayi Huayi pab pawg tau nqis peev ntau ua lag luam thiab cov khoom siv nyiaj txiag, nws tau ua tiav ntawm ob tiam kev lag luam Shandong xeev, tawg thev naus laus zis monopoly ntawm Nyiv thiab ua tib lub tuam txhab nrog cov thev naus laus zis hauv Suav teb. Tshuab, tseem ua Tuam Tshoj lub teb chaws thib ob kom muaj cov thev naus laus zis rau kev tsim cov MAA thiab MMA los ntawm oxidation ntawm isobutylene.

(2) Asahi Kasei txheej txheem (Isobutylene ob-kauj ruam txheej txheem)

Nyiv lub tuam txhab Ashai Kasei Lub tuam txhab ntev tau cog lus rau kev txhim kho cov kev lag luam esericalfulation thiab muab tso rau hauv 1999 muaj cov nroj tsuag 60,000 nrog rau kev tsim tawm hauv Kawasaki, Nyiv, thiab tom qab ntawd thiab tom qab tons. Cov txheej txheem kev muaj ob-kauj ruam, piv txwv li oxidation ntawm mma-bas pen hauv mma ncaj qha, mal), Mal), qhov twg cov kauj ruam oxidalite MMA. Lub Asahi Kase Linesi Txheej Txheej yog yooj yim, nrog tsuas yog ob kauj ruam ntawm cov tshuaj tiv thaiv thiab tsuas yog cov khoom siv, tab sis tus qauv tsim thiab npaj ntawm catalyst yog qhov xav tau heev. Nws tau tshaj tawm tias Asahi Kasei's esterification Etregred tau txhim kho los ntawm thawj tiam ntawm PD-PB rau lub cim tshiab ntawm AU-ni catalyst.

Tom qab kev lag luam ntawm Asahi Kasei Technology, los ntawm 2003 txog 2008, Tsev Kawm Ntawv Tianjin, Tsev Kawm Ntawv Tianjin, tom qab xyoo 2015, kev tshawb fawb hauv tsev kawm ntawv ntawm AU-NI catalysts pib lwm puag ncig Boom, tus sawv cev ntawm uas yog Dalian lub koom haum ntawm kev kawm ua haujlwm, tau ua tiav kev ua haujlwm ntev, thiab tam sim no tau koom tes nrog kev lag luam kom tsim kho cov cuab yeej kev lag luam.

3, Ethylene CarbonyL Synthesis txoj kev
Cov thev naus laus zis ntawm ethylene kev lag luam nrog cov kev lag luam hluav taws xob suav nrog Basf txheej txheem thiab ethylene-prodom metyl ester txheej txheem.

(1) ethylene-prodic acid txujci (Basf txheej txheem)

Cov txheej txheem muaj plaub kauj ruam: Ethylene yog hydroformylated kom muaj cov kab mob tub rog, thiab ua kom huv thiab ua kom muaj MMA los ntawm kev siv methanol. Cov tshuaj tiv thaiv yog cov kauj ruam tseem ceeb. Cov txheej txheem yuav tsum tau plaub kauj ruam, uas yog qhov tseem ceeb thiab yuav tsum tau siv cov khoom siv siab thiab muaj txiaj ntsig siab yog tus nqi qis ntawm cov khoom nyoos.

Kev tawg hauv tsev kuj tau ua hauv kev txhim kho thev naus laus zis ntawm ethylene-propylene-formaldehyde synthesis ntawm MMA. 2017, Shanghai Huayi Group tuam txhab, hauv kev koom tes nrog cov khoom siv hluav taws xob uas tsim nyog nrog rau methots-filcorehyde Ib qho ntxiv, lub koom haum ntawm cov txheej txheem ntawm Suav Academences ntawm Kev Tshawb Fawb, ua tiav ib pawg neeg muaj zog thiab ua tiav tau ua haujlwm ruaj khov xyoo 2018.

(2) Kethylene-Methylene Processionate Txheej txheem (Lucite Alpha Txheej Txheem)

Lucite alpha txheej txheem kev ua haujlwm yog cov nqi me, cov nqi khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw yooj yim, thiab cov khoom siv Raw Yooj Yim

Cov txheej txheem alpha tau muab faib ua ob kauj ruam:

Thawj kauj ruam yog cov tshuaj tiv thaiv ntawm ethylene nrog Co thiab Methanol los tsim cov methyl propionate

Siv Palladium-raws homogeneous carbanelation catalyst, uas muaj cov yam ntxwv ntawm cov mob siab, thiab cov kev cuam tshuam yog tsawg dua rau lub cuab yeej thiab txo cov kev tsim kho peev txheej;

Qhov thib ob kauj ruam yog qhov tshuaj tiv thaiv ntawm methyl propionate nrog formaldehyde los ua mma

Cov tswv cuab ntawm ntau-theem catalyst yog siv, uas muaj MMA xaiv siab. Nyob rau hauv xyoo tsis ntev los no, kev lag luam hauv tsev tau nqis peev ntau ntawm kev txhim kho cov thev naus laus zis, thiab tau ua rau lub neej muaj kev vam meej thiab cov kev ua haujlwm catalysthys tseem tsis tau muaj rau cov ntawv thov.