Methyl Methacrylate (mma) yakakosha organic makemikari, inonyanya kushandiswa mukugadzirwa kwegirazi, mahekita ekunyora, eter.

Semunhu monomer, MMA inonyanya kushandiswa mukugadzirwa kwePolymethyl.

Parizvino, kune matatu marudzi emhando yepamusoro ekugadzira mma kumba uye kunze: Methacrylene nzira (mitsabishi cydicle nzira) uye ethyle carbonyl Synthesis nzira

1, Methacrylamide hydrolysis estation nzira
Iyi nzira ndiyo tsika yekugadzira mma, kusanganisira iyo acetone cyanohydrin nzira uye iyo methacrylonitrile nzira, ese mushure meMethacrylwide yepakati hydrolysis, itsefication synthesis yeMMA.

(1) acetone cyanohydrin nzira (ACH nzira)

Nzira yeACH, yekutanga kuvandudzwa neUS Lucite, ndiyo yekutanga maindasitiri ekugadzira nzira yeMMA, uye zvakare ndiyo huru yeMMA kugadzirwa kwacho munyika panguva iripo. Iyi nzira inoshandisa acetone, hydrocyanic acid, sulfutic acid uye methanol seyakagadzirwa zvinhu, uye matanho ezvekuita anosanganisira:

Iyo ACH maitiro ndeyehunyanzvi hukuru, asi ane zvinotevera zvakashata zvakashata:

○ Iko kushandiswa kweiyo ine chepfu hydrocyanic acid, iyo inoda nzira dzakasimba dzekudzivirira panguva yekuchengetedza, zvifambiso uye kushandiswa;

○ Kugadzirwa-kugadzirwa kwehuwandu hukuru hwe acid rasara (mhinduro yemhedzisiro ine sulfutic acid uye ine huwandu hwenzvimbo hombe), iyo nguva yeiyo 2.5 ~ yeMMA, uye yakakomba yekusvibiswa kwezvakatipoteredza;

o Nekuda kwekushandiswa kweSulfutic acid, Anti-Corrosion zvishandiso zvinodiwa, uye kuvakwa kwechinhu kunodhura.

(2) methacrylonitrile nzira (Man Nzira)

Asahi Kasei akagadzira methacrylonitrile (murume) pabasa rakavakirwa pane iyo achera. Murume ari nzira inosanganisira Ammonia oxidation reaction, ambication reaction uye hydrolysis esterufied maitiro, uye inogona kushandisa yakawanda yemidziyo yeACH chirimwa. Iyo hydrolysis yekuita inoshandisa yakawandisa sulfutic acid, uye gohwo remapakati methacrylamide inenge 100%. Nekudaro, iyo nzira ine chekuita neyakajaya hydrocyanic acid ne-zvigadzirwa, hydrocyanic acid zvakanyanya kuora, zvigadziriso zvekushandisa zvakakwira kwazvo, nepo njodzi dzemhoteredzo dzakakwira kwazvo.

2, isobutyleye oxidation nzira
Isolutyle oxidation nzira inodiwa yeTekinoroji yemakambani makuru epasi nekuda kwekushanda kwayo kwakakwirira uye nekuchengeterwa kwezvinhu zvakakwirira, uye Japan chete tekinoroji iri munyika uye yakavhara tekinoroji kuChina. Iyo nzira inosanganisira marudzi maviri eMitsubishi maitiro uye Asahi Kasei proces.

(1) Mitsubishi process (Isobutylene matatu-nhanho nzira)

MaJapan's Mitsubishi Rayon akagadzira maitiro matsva ekugadzira mma kubva kuSoutylene kana tertanol seyakawona oxidation nemhepo kuti uwane methacrylic acid (maa), uye ndokuzosheswa naMethanol. Mushure mekusindunziridzwa kweMitsubishi Rayon, Japan Ayahi Kasei Kambani, Japan Kyoto Kambani, Korea Lucky Company, etc. Yakasvika maindasitiri imwe neimwe. Iyo Shanghai Huyi Group Company Yakatarisa yakawanda yemunhu uye mari yekuzvimiririra uye nekumashure kweSoutsial Heze, Shandong Dunhu, Kutyora tekinoroji monopoly yeJapan uye kuve iyo chete kambani ine tekinoroji iyi kuChina. Tekinoroji, zvakare kugadzira China iyo nyika yechipiri ive neiyo tekinoroji yeyunivhesiti yekugadzirwa kweMaa uye mma ne oxidation yeSobutylene.

(2) Asahi Kasei process (isobutylene maviri-nhanho maitiro)

Japan's Asai Kasei Corporation yakazvipira kare kukudziridzwa kwekugadzira nzira yekugadzirwa kweMMA, iyo yakaiswa musi wa1900,000-toni, Japan, uye gare gare yakawedzera kusvika kumatani zviuru zana. Iyo nzira yehunyanzvi ine maviri-nhanho maitiro, kureva oxidy of isobincene kana yechiitiko chePD muchikamu chePD muMama yakananga Mma. Iyo Asahi Kasei nzira iri nyore, ine nhanho mbiri chete dzekuita uye chete mvura seyakagadzirwa ne-chigadzirwa, iyo yakasvibirira uye yekugadzira uye kugadzirira kweiyo catalyst iri kudiwa kwazvo. Zvinonzi Asahi Kasei

Mushure mekusindunziriro yeAsahi Kasei Tekinoroji, Kubva muna 2003 kusvika 2008, Institues of Science Inyunivhesiti Imwe nzira yekukomba, mumiriri weiyo Dalian Institute of Chemical Engano, yakawedzera kuongororwa kweNzvimbo

3, ethylene carbonyl synthesis nzira
Iyo tekinoroji yeEtrayne Carbonyl Synthesis nzira yekuunganidza nzira inosanganisira basf maitiro uye ethylene-Proponic acid methyl ester maitiro.

(1) Ethylyerene-Proponic acid nzira (Basf maitiro)

Maitiro acho ane matanho mana: Etlelene ane hydroformyde kuti awane propicyde Maitiro ndiwo nhanho yakakosha. Maitiro acho anoda matanho mana, ayo anokwana uye anoda michina yakakwirira uye yakakwira mari mari mutengo, nepo mukana wakadzika mutengo wezvinhu zvisina kugadzirwa.

Zvepamba zvakazara zvakagadzirwawo mune tekinoroji kukura kweiyo ethylene-procylene-formalitehdehyde synthesis yeMMA. 2017, Shanghai Huayi Group Company, mukubatana neNanjing Noao Midziyo Company uye Tianjin Yunivhesiti Matani ePropence Mukuwedzera, iyo Institute of English Injiniya yeChinese Chikoro cheStacience

(2) ethylene-methyl proyer maitiro (lucite alpha maitiro)

Lucite Alpha process mamiriro ezvinhu akanyanya, chigadzirwa chechibereko chakakwira

Maitiro eAlpha anokamurwa kuita nhanho mbiri:

Nhanho yekutanga ndeyekuita kweiyo ethylene ne col uye methanol kugadzira methyl profired

Kushandisa Palladium-based Homogeneous Carbonouslation Carlyst, iyo ine hunhu hwechiitiko chepamusoro, hupenyu hwepamusoro (99.9%) uye maitiro akaitwa pasi pemamiriro ezvinhu uye anoderedza mari yekudyara uye inoderedza mari yekuvaka.

Nhanho yechipiri ndeyekuita kwe methyl proyers ne formaldehyde kuumba mma

A Prevrietary Multi-Phase Catalyst inoshandiswa, iyo ine yakakwira mma sarudzo. Mumakore achangopfuura, mabhizinesi epamba akaisa chikumbiro chakanaka mukukura kwehunyanzvi hweMethyl uye formaldehyde conyenation kuenda kuMma, uye akafambira mberi kwazvo pamubhedha maitiro ekuvandudza, asi hupenyu hwekutengesa hwekuita basa rekusimudzira,