Ko te METHYL Methacrylate (MMA) he taonga matū mata nui me te monomer o te karaihe matū Ko nga korero, te muka whatu, te roboti me etahi atu mara.

Hei monomer rauemi, e whakamahia ana te MMA i roto i te hanga methacytyl (e mohiotia ana ko te Plexiglasss, a ka taea hoki te kape me etahi atu momo miihini, penei mo te hanga o te polyvinyl chloride (PVC ) Tuhia he ACR, MBS me te monomer tuarua i roto i te hanga acrylics.

I tenei wa, e toru nga momo o nga tukanga pakeke mo te whakaputa o te MMA i te kaainga me te tikanga o te cyhacrylamide me te mahi miihini me te Ashilene Carbonyl Synthy. Te tikanga Basf me te tikanga a te Luctite).

1, Methacrylamide Hydrolysis Hydrolysis
Ko tenei huarahi ko te tikanga whakaputa MMA tuku iho, tae atu ki te tikanga o te Cyhacryydrin me te tikanga methacrylamin

(1) Te tikanga Cyanohydrin (ACC Tikanga)

Ko te tikanga a ACH, i whakawhanakehia e te US Loocite, ko te tikanga whakaputa tuatahi o te MMA, me te kaupapa whakaputa MMA MMA ano hoki i tenei ao. Ko tenei tikanga e whakamahi ana i te actone, te waikawa hydrocyanic, te waikawa whanariki me te methanol rite ki nga rauemi mata, ko te tauhohenga cyanonoadrilization, tauhohenga whakaipoipo me te tauhohenga me te tauhohenga me te tauhohe.

Ko te tikanga ach he mea pakeke, engari kei a ia nga ngoikoretanga e whai ake nei:

 te whakamahi i te waikawa hydrocyanic tino pai, e hiahia ana kia pai te tiaki i te wa e rokiroki ana, te kawe me te whakamahi;

○ Ma te hanga i te nui o te toenga waikawa (te otinga waikawa me te haukini nui me te nui o nga mea o te rauropi), ko te nui o te MMA, he nui puna o te poke o te taiao;

o na te whakamahi i te waikawa whanariki, ka hiahiatia nga taputapu anti-contolion, a he nui te utu o te taputapu.

(2) tikanga Methacryloritrity (Tikanga Tangata)

I whakawhanakehia e Asahi Kasei te mahinga Methacrylonitrile (Tangata) i runga i te ara ach, ko te Iobututylene ko Tetere ranei te waikawa me te waikawa whanariki me te methanol hei whakaputa MMA. Kei roto i te ara o te taangata ko te tauhohenga haddiania, te tauhohenga ammonia me te tauhohenga whakamomori, ka taea te whakamahi i te nuinga o nga taputapu o te tipu ACH. Ko te tauhohenga hydrolysis e whakamahi ana i te waikawa whanariki, me te hua o te methacrylamide takawaenga tata 100%. Heoi, ko te tikanga he tino uaua ki te waikawa o te waikawa hydrocyyic, waikawa hydrocyanic me te waikawa sulfuric he tino pai, he tiketike rawa nga whakaritenga o te taiao.

2, Isobutleyne Te Huarahi Oxidation
Ko te whakahoahoa IsObutlelene ko te huarahi hangarau pai rawa atu mo nga kamupene nui i te ao na te mea nui me te tiakitanga taiao, engari ko Japan anake te hangarau i te ao. Kei roto i te tikanga e rua nga momo o te tukanga Mitsubishi me te mahi Ashi Kase.

(1) Te Tukanga Mitsubishi (isobutleyne toru-taahiraa)

I whakawhanake a Mitsubishi a Japan i tetahi mahi hou hei whakaputa i a Isbuthylene, te Thert-Btonnol ranei, ko te waikawa e rua-taakaha te waikawa me te waikawa methacrylic (maa) I muri i te ahupūngao o Mitsubishi Rayon, Kamupene Japan Ashi Monomer Kamupene, Korea He waimarie Kamupene, me era atu i muri i tetahi atu. Ko te kamupene a Shanghai Huhai Huayi Huia he maha nga rauemi a te tangata me te putea, me te kaha o te whakatipuranga o nga whakatipuranga e rua, me te ahuru o nga waahanga e rua-waahanga o te hangarau MMA. , Kua oti te mahi me te mahi i te tipu o te tipu 50,000-taana i roto i tana kamupene umanga umanga, i te kawanatanga o Shandong, ka takahi i te hangarau me tenei hangarau. Hangarau, ko Haina hoki te whenua tuarua kia whai hangarau hangarau mo te hanga o te maa me te MMA na te kohinga o Iobutholene.

(2) Te Tukanga Asahi Kase (IsObutlelene Tukanga-rua-Wahanga Tahi)

Ko te Asä Japan Koni Corporation kua roa te whanaketanga o te MMA tika mo te whakaputa MME, i pai te whakawhanake me te mahi 60,000-ton i muri i te 100,000 taara. Ko te Roopu Hangarau kei roto i te tauhohenga e rua-taahiraa, ara ko te waiariki o Iobutholene, te ob-bentanol ranei i raro i te waahanga o te miihini o te miihini. Wahanga wai i raro i te mahi o te PD-PB Catalyst ki te whakaputa i te MMA tika, kei hea te nui o te axifeditel o te Mal te mea nui ki tenei huarahi hei whakaputa i te MMA. He ngawari te tikanga o te mahi Ashi Kasei, me nga waahanga e rua noa iho o te tauhohenga me te wai, he maamaa me te taiao, engari ko te hoahoa me te whakarite i te tino hiahia. E ai ki te korero ko te cataly a Ashifical a Ashinifint a Assifident kua whakahoutia mai i te whakatipuranga tuatahi o te PD-PB ki te whakatipuranga hou o Au-NI Catalyst.

I muri i te hangarau o AShi Kase Hangarau, mai i te 2003 ki te 2008, i timata te whare rangahau o te whare pukapuka, Institute of Science me te Hanuere o te Whare Wananga o te Whare Wananga I te whanaketanga me te whakapainga o te PD-PB Catalysts, me era atu 2015, i muri mai i te tau 2015, he tohu mo te kaupapa o te aoiao, ko te Hapori o te Hapori. Ko te rangahau iti a te kaihopu, i oti te arotautanga o te tukanga whakarite Nano-Gollyst, te whakahoutanga o te huringa o te aromātai mahi roa, a inaianei kei te whakawhanake i nga hinonga ki te Hanga Hangarau Hangarau.

3, Ko te Huarahi Tikanga Hatleyne Carbonyl
Ko te hangarau o te Authyis Carbonyl Synthelis Sift Action Action teihana tae atu ki te tukanga Basf me te tukanga meteryl etetere.

(1) Te tikanga waikawa ahuru-protionic (tukanga tuku)

E wha nga waahanga o te mahinga: Ko te Ethylene te hydrofehyd, ka tukuna te proponoldehyde ki te whakaputa i te mar, te maaka ki te whakaputa i te MMA ma te whakaputa i te MMA na Methanol. Ko te tauhohenga te taahiraa matua. E wha nga waahanga o te mahi, he mea tino nui te mahi me te utu i nga taputapu nui me te utu haumi nui, ko te painga ko te utu iti o nga taonga mata.

Ko nga wehenga o te whare kua mahia i roto i te hangarau hangarau o te tauira o te tauira o te tauira o te MMEyne-formaledeh. 2017, Shanghai Huayi roopu roopu roopu me te Whare Wananga o te Whare Wananga o te Kamupene o te Kamupene 1,000 o Synayehyde ki Methacrolen me te whanaketanga o te tipu umanga. Hei taapiri, ko te Institute of Tukanga Hangarau o te Hapori Hapori o te Pūtaiao, i roto i te mahi tahi me Henan Energy me te tipu matū, kua tutuki pai te whakatutukitanga i te mahi tika i te tau 2018.

(2) Te tukanga a Ethylene-methyl (Tukanga Alpha Sathal)

Lucte Alp Healt Stroest He ngawari, he hua nui te hua o te haumi me nga utu mo te waahanga kotahi, he mana motuhake anake te whiu o te waahanga. I whakawhiti ki te ao o waho.

Kua wehea te mahinga alpha kia rua nga waahanga:

Ko te mahi tuatahi ko te urupare o te ethylene me te co me te methanol hei whakaputa i te kaupapa methyl

Ma te whakamahi i te papaa palladium-indelium-indecysst catalyst, kei a ia nga ahuatanga o te mahi nui, te nui o te ao (99.9%) me te roa o te mahi. ;

Ko te taahiraa tuarua ko te tauhohenga o te methyl e whakaatu ana me te formaldehyde hei hanga i te MMA

He kohinga maha-waahanga maha e whakamahia ana, he nui te maarama MMA. I nga tau kua pahure ake nei, kua whakapau kaha a Doustic ki te whanaketanga hangarau o te kaupapa hangarau me te whakawhanaketanga o te whanaketanga o te ao, engari kaore ano kia tae ki nga whakaritenga mo te ahumahi mo te Ahumahi Tono.