Hauv kev ua lag luam Suav, cov txheej txheem ntau lawm ntawm MMA tau tsim los ze rau 6 hom, thiab cov txheej txheem no tau muaj kev lag luam. Txawm li cas los xij, kev sib tw teeb meem ntawm MMA sib txawv ntau ntau ntawm cov txheej txheem sib txawv.

Tam sim no, muaj peb cov txheej txheem ntau lawm rau MMA:

Acetone Cyanohydin Txoj Kev (ACH txoj kev): Qhov no yog ib qho ntawm cov txheej txheem ua haujlwm ntxov tshaj plaws, nrog kev ua haujlwm paub tab thiab kev lag luam yooj yim.

Ethylene carbonylation txoj kev: Qhov no yog cov txheej txheem ntau lawm nrog kev ua haujlwm siab thiab cov khoom zoo.

Isobutene oxidation txoj kev (C4 txoj kev): Qhov no yog cov txheej txheem tsim khoom ntawm Butene, nrog cov khoom siv raw yooj yim thiab cov nqi qis.

Ntawm lub hauv paus ntawm peb txoj kev no, muaj peb cov txheej txheem txhim kho ntau yam raws li hauv qab no:

Txhim kho ACH Txoj Kev: Los ntawm kev tsim nyog tshwm sim thiab cov khoom siv, cov txiaj ntsig thiab cov khoom lag luam zoo tau hloov kho.

ICE acetic acform txujci: Cov txheej txheem no siv cov khoom siv dej khov actic accet kua txiv, thiab tsis muaj peb daim pov tseg thaum lub sijhawm tsim khoom, ua rau nws tus phooj ywg tsim khoom.

BASF thiab Lucite txheej txheem, cov sawv cev tsuas yog los ntawm lub npe ntawm cov lag luam, muaj kev txhim kho cov yam ntxwv ntawm lawv cov lag luam muaj txiaj ntsig thiab muaj txiaj ntsig zoo thiab kev sib tw zoo.

Tam sim no, cov txheej txheem no yog txhua yam ua tiav cov koog nrog kev ntsuas ntawm 10000 tons lossis ntau dua hauv Suav teb. Txawm li cas los xij, kev sib tw ntawm cov txheej txheem sib txawv ntau dua vim yog cov yam ntxwv xws li lawv tus kheej cov yam ntxwv thiab cov nqi. Yav tom ntej, nrog kev nce qib ntawm kev siv tshuab thiab kev ua lag luam, cov toj roob hauv pes kev sib tw ntawm cov txheej txheem ntau lawm yuav hloov tau.

Nyob rau tib lub sijhawm, nws yog ib qho tseem ceeb uas tau hais txog thaum lub Cuaj Hlis 2022, kev ua qauv qhia ua qauv ntawm cov txheej txheem ntawm cov txheej txheem ntawm Suav Academy of Sciency yog ntse pib thiab ua haujlwm stably, thiab cov khoom tau nce mus rau tus qauv. Cov cuab yeej no yog lub ntiaj teb thawj zaug ntsaws ruaj khov acetic acid rau MMA muaj kev ua tiav ntawm cov roj av cov khoom siv los siv cov ntaub ntawv raw.

Vim tias kev hloov pauv ntawm cov toj roob hauv pes kev sib tw, cov khoom siv thiab ib puag ncig ntawm MMA cov khoom tau hloov pauv, thiab tus nqi sib hloov qhia qhov nqaim. Hauv ob xyoos dhau los, cov nqi lag luam siab tshaj plaws ntawm MMA hauv Suav teb tau mus txog 14014 yuan / tuj, thiab tus nqi qis yog li 10000 yuan / tuj. Raws li Lub Yim Hli 2023, MMA tus nqi lag luam tau poob mus rau 11500 yuan / tuj. Cov neeg sawv cev tseem ceeb yog PMMA, uas tau qhia tsis muaj txiaj ntsig zoo hauv cov nqi ua lag luam hauv cov nqi hauv khw hauv kev ua lag luam dhau ntawm 14625 Yuan / Nyhav Ib Toos / Nyhav Ib Toos. Raws li Lub Yim Hli 2023, lub ntsiab lus tseem ceeb ntawm Suav PMA PMA PMA ua lag luam hloov thaum 14600 yuan / tuj. Nws yuav tsum raug sau tseg tias vim yog qhov tseeb tias cov khoom pmma hauv tsev yog feem ntau ntawm cov khoom lag luam qis dua li ntawm kev lag luam txawv teb chaws.

1.Tsis muaj kev xav txog cov acetic acid mma chav, lub ethylene txheej txheem tau muaj cov kev sib tw muaj zog tshaj plaws hauv ob xyoos dhau los.

Hauv ob xyoos dhau los, cov ethylene raws mmA cov txheej txheem ntau lawm muaj qhov muaj zog tshaj plaws hauv kev ua lag luam Suav. Raws li kev txheeb cais, cov nqi ntau lawm ntawm ethylene raws mmA yog qhov qis tshaj thiab nws txoj kev sib tw yog qhov muaj zog tshaj. Xyoo 2020, tus neeg ua txhaum cov nqi ntawm ethylene raws mmA yog 5530 yuan ib tuj, thaum lub Ib Hlis Ntuj 2023, tus nqi nruab nrab tsuas yog 6088 yuan rau ib tuj. Hauv kev sib piv, cov qauv Basf muaj ntau lawm tus nqi, nrog MMA tus nqi ntawm 1020 thiab tus nqi nruab nrab ntawm 110 thiab tus nqi nruab nrab ntawm Lub Ib Hlis txog Lub Yim Hli txog Lub Yim Hli 2023.

Thaum ntsuas qhov kev sib tw ntawm cov txheej txheem ntau lawm, peb yuav tsum tau them sai sai rau qhov sib txawv ntawm cov khoom siv ntawm cov txheej txheem sib txawv rau cov txheej txheem sib txawv. Piv txwv li, cov khoom lag luam nyoos ntawm cov txheej txheem ethylene yog 0.35 ethylene siv tau, thiab 0.38 synthores siv yog 0.427, thiab synthesis roj siv yog 662 cov ntsiab lus me me meters. Cov kev sib txawv no cuam tshuam rau cov nqi ntau lawm thiab kev sib tw ntawm cov txheej txheem sib txawv.

Raws li tus nqi kwv yees li ntawm ob peb xyoos dhau los, qeb kev sib tw rau cov txheej txheem sib txawv Cov qeb duas no yog feem ntau cuam tshuam los ntawm qhov sib txawv hauv cov pej xeem engineering ntawm cov txheej txheem sib txawv.

Yav tom ntej, nrog kev nce qib ntawm kev txhim kho thev naus laus zis thiab kev ua lag luam, cov toj roob hauv pes kev sib tw ntawm cov txheej txheem sib tw yuav hloov tau. Tshwj xeeb tshaj yog tsis muaj kev xav txog cov actetic acid MMA ntaus ntawv, Ethylene MMA yuav tsum tau ua txuas ntxiv tswj nws cov kev sib tw.

2.Acetic acid txoj kev MMA yuav tsum tau dhau los ua kev sib tw hom kev sib tw

Lub koom haum ntawm cov txheej txheem ntawm Suav Academy tau ua tiav lub ntiaj teb thawj zaug ua acetic acid mma muaj ua qauv qhia cog. Cov nroj tsuag muaj siv meticol thiab acetic acid li cov ntaub ntawv raw, thiab dhau los ntawm cov txheej txheem Aldol ntawm Aldol Cov Khaub Ncaws, thiab lwm yam. Cov txheej txheem no tau pom tseeb, tsis yog tus txheej txheem luv luv, tab sis kuj tseem cov ntaub ntawv nyoos tuaj los ntawm cov thee, uas muaj cov nqi ntsuas tau zoo. Ib qho ntxiv, Xinjiang Zhongyou PuIn Technology Co., Ltd. yog npaj cov kev txhim kho loj dua thiab txhawb nqa kev txhim kho thiab kev lag luam MMA. Piv nrog cov kev ua roj av thiab cov txheej txheem acetic ntau lawm, qhov ua tau zoo ib puag ncig thiab kev lag luam muaj txiaj ntsig zoo rau kev tsim kho ntawm MMA yav tom ntej.

3.Muaj qhov sib txawv tseem ceeb hauv tus nqi cuam tshuam nrog cov hnyav hnyav ntawm cov txheej txheem sib txawv

Muaj ntau qhov sib txawv ntawm cov nqi cuam tshuam tus nqi ntawm cov txheej txheem mmA ntau yam ntawm cov nqi sib txawv ntawm cov txheej txheem thev naus laus zis.

Rau ach, tus nqi hloov acetone, methanol, thiab acrylonitrile muaj qhov cuam tshuam tseem ceeb ntawm nws tus nqi. Ntawm lawv, tus nqi hloov acetone muaj qhov cuam tshuam loj tshaj plaws rau cov nqi, ncav cuag cov nqi ntawm methanol thiab acrylonitrile cuam tshuam 57% thiab 18% ntawm cov nqi, feem. Hauv kev sib piv, tus nqi ntawm Methanol cov nyiaj tau rau tsuas yog li 7%. Yog li ntawd, nyob rau hauv kev kawm txog tus nqi saw ntawm ACH MMA, ntau dua kev xav tau kom them rau tus nqi hloov pauv ntawm acetone.

Rau C4 Txoj Kev MMA, Kev Ncaj Ncees Isobutylene yog cov nqi nce loj tshaj plaws yog tus nqi nce siab, suav tias kwv yees li ntawm 58% ntawm MMA tus nqi. Methanol Account rau kwv yees li 6% ntawm MMA tus nqi. Tus nqi hloov pauv ntawm Isobutene muaj qhov cuam tshuam tseem ceeb ntawm tus nqi ntawm C4 Txuj Ci MMA.

Rau kev ua kom muaj kev noj thaum ethylene raws li cov as-ensylene suav rau ntau dua 85% ntawm MMA tus nqi ntawm cov txheej txheem no, uas yog tus nqi cuam tshuam tseem ceeb. Txawm li cas los xij, nws yuav tsum tau sau tseg tias feem ntau ntawm cov ethylene feem ntau yog tsim los ua tus kheej tsim tawm, thiab kev sib hais haum sab hauv yog feem ntau raws li tus nqi them nqi. Yog li ntawd, the theoretical kev sib tw theem ntawm ethylene tej zaum yuav tsis muaj siab npaum li kev sib tw qib kev sib tw.

Hauv cov ntsiab lus, muaj qhov sib txawv ntawm qhov hnyav hnyav rau cov nqi ntawm MMA ntau lawm cov txheej txheem, thiab tshuaj xyuas yuav tsum tau ua raws cov txheej txheem tshwj xeeb thev naus laus zis.

4.Cov txheej txheem MMA twg yuav muaj tus nqi qis tshaj hauv lub neej yav tom ntej?

Raws li cov xwm txheej tam sim no, kev sib tw theem ntawm MMA hauv cov txheej txheem sib tw hauv cov txheej txheem sib txawv hauv lub neej yav tom ntej yuav cuam tshuam ntau npaum li cas los ntawm kev hloov pauv ntawm cov khoom siv roj nyoos. The raw materials used in several main MMA production processes include MTBE, methanol, acetone, sulfuric acid, and ethylene. Cov khoom lag luam no tuaj yeem yuav lossis siv hluav taws xob hauv sab hauv, cov khoom siv hluav taws xob, cov ntaub qhwv cov roj av, thiab lwm yam.

Ntawm lawv, tus nqi ntawm MTBA feem ntau yog ua raws li txoj kev hloov pauv ntawm lub lag luam roj, thiab cov roj ua kom zoo sib xws nrog cov nqi ntawm cov roj crude. Nyob rau ntawm qhov tseeb ntawm kev saib xyuas bushlook rau cov nqi roj yav tom ntej, MTBE nqe kuj tseem yuav tau qhia txog kev nce qib, thiab kev cia siab nce qib yog muaj zog dua li cov roj crude. Tus nqi ntawm Methanol hauv kev ua lag luam hloov nrog cov qauv hloov pauv ntawm cov nqi thee, thiab kev siv hluav taws xob yav tom ntej yuav tsum tau nce ntxiv. Txawm li cas los xij, kev txhim kho ntawm cov qauv ntawm cov qauv siv yuav ua rau muaj kev nce siab hauv cov kev ua lag luam hauv qab daus, thiab cov khoom lag luam methanol hauv kev ua lag luam yuav tsum nce ntxiv.

Cov khoom noj thiab thov ib puag ncig hauv kev ua lag luam acetone yog deterone, thiab kev tsim kho cov haujlwm tshiab siv, thiab ntev-lub sij hawm hloov pauv kev hloov pauv yuav tsis muaj zog. Ethylene feem ntau tau muab rau sab hauv thiab muaj tus nqi muaj zog sib tw.

Yog li ntawd, raws li cov thev naus laus zis tam sim no thiab kev hloov pauv ntawm cov khoom siv roj nplua nuj, tseem muaj qee qhov tsis txaus ntseeg ntawm MMA cov txheej txheem ntau tshaj yav tom ntej. Txawm li cas los xij, nws tuaj yeem yog tso ua ntej tias nyob rau hauv cov ntsiab lus ntawm cov roj ntxiv xws li Methanol thiab Mtbe kuj yuav muaj kev cuam tshuam loj ntawm kev sib tw qib ntawm MMA hauv cov txheej txheem sib txawv. Txhawm rau tswj kev sib tw, cov chaw tsim khoom yuav xav nrhiav cov khoom siv roj av ntau dua, thaum kev txhim kho cov txheej txheem ntau lawm los txo cov nqi tsim khoom thiab txhim kho cov khoom lag luam zoo.

Lub ntsiab

Kev sib tw kev sib tw ntawm cov txheej txheem MMA txawv hauv Suav teb yav tom ntej yuav tsum muaj zog rau cov txheej txheem ethylene txhawb nqa cov acrylonitrile chav, thiab tom qab ntawd C4 cov txheej txheem. Txawm li cas los xij, nws yuav tsum raug sau tseg tias yav tom ntej, kev lag luam yuav tsim kho hauv cov qauv kev sib tw, uas yuav yog cov khoom lag luam sib tw tshaj plaws los ntawm cov khoom lag luam tsawg los ntawm cov khoom lag luam pmma lossis lwm yam khoom siv tshuaj lom neeg.

Qhov laj thawj yog vim li cas txoj kev ethylene xav tias yuav muaj zog yog vim muaj cov khoom muaj zog ntawm nws cov nyiaj tau los ntawm MMA cov nqi ntau lawm. Txawm li cas los xij, nws yuav tsum tau taw qhia tias feem ntau ethylene tau muab rau sab hauv, thiab nws txoj kev sib tw qib sib tw yuav tsis zoo li qhov kev sib tw qib.

ACH txoj kev muaj zog muaj kev sib tw thaum ua ke nrog cov khoom siv acryloniturile, feem ntau yog cov khoom siv rementylene raws li kev ua kom muaj zog yog cov khoom siv Cov.

Kev sib tw ntawm cov txheej txheem xws li C4 txoj kev yog tsis muaj zog, feem ntau yog vim yog isobutane hauv MMA ntau lawm tus nqi.

Zuag qhia tag nrho, kev ua haujlwm sib tw ntau tshaj plaws ntawm MMA kev lag luam kev lag luam hauv lub neej yav tom ntej yuav yog rau cov khoom lag luam saw, los ntawm cov khoom lag luam uas tsis muaj nqi thiab qis dua cov khoom siv tshuaj lom neeg. Qhov no tsis tuaj yeem txo cov nqi ntau lawm thiab txhim kho cov khoom lag luam kev sib tw, tab sis kuj zoo dua tau raws li kev ua lag luam xav tau.