Methylene Chloride (MC), ib yam tshuaj yaj uas siv tau ntau yam hauv cov tshuaj, cov nplaum, thiab cov tshuaj aerosol, tab tom hloov pauv ntau yam hauv nws cov ntawv thov kev lag luam thiab cov cai tswjfwm. Kev nce qib tsis ntev los no hauv kev ua haujlwm zoo ntawm kev tsim khoom, cov txheej txheem kev nyab xeeb ib puag ncig, thiab kev tshawb fawb txog lwm yam tshuaj yaj tau hloov pauv txoj kev uas cov tshuaj no raug pom thiab siv thoob plaws cov saw hlau thoob ntiaj teb.
1. Kev Tshawb Fawb Tshiab hauv Cov Txheej Txheem Rov Ua Dua Tshiab Kaw-Loop
Ib txoj kev tshiab rau kev rov qab thiab siv cov dichloromethane dua hauv cov txheej txheem tsim khoom tau txais kev nyiam hauv xyoo 2023. Tsim los ntawm European kev tshawb fawb consortium, lub kaw lus kaw no siv cov thev naus laus zis adsorption siab heev los ntes thiab ntxuav cov pa MC uas tawm thaum lub sijhawm tsim cov txheej. Cov kev sim thaum ntxov qhia tau tias muaj 92% rov qab los, txo qis kev siv cov khoom siv raw thiab cov pa phem.
Cov thev naus laus zis no siv kev saib xyuas los ntawm AI los ua kom zoo dua qub rau kev siv cov tshuaj yaj dua tshiab, kom ntseeg tau tias ua raws li cov kev txwv nruj ntawm qhov chaw ua haujlwm. Cov lag luam xws li kev tsim cov polycarbonate thiab kev ntxuav cov khoom siv hluav taws xob tab tom sim ua qhov system no, uas sib haum nrog International Council of Chemical Associations' (ICCA) 2030 lub hom phiaj kev lag luam ncig.
2. Kev Tswj Xyuas Thoob Ntiaj Teb Txog Kev Tso Pa MC Kom Ruaj Khoov
Cov koom haum tswj hwm tab tom ua kom muaj kev tshuaj xyuas ntxiv ntawm Methylene Chloride vim nws qhov muaj peev xwm ua rau ozone puas tsuaj (ODP) thiab kev pheej hmoo ntawm kev noj qab haus huv hauv chaw ua haujlwm. Thaum lub Cuaj Hlis 2023, European Chemicals Agency (ECHA) tau thov kom hloov kho cov cai REACH, yuam kom muaj kev taug qab cov pa phem tiag tiag rau cov chaw siv ntau dua 50 tons ntawm MC txhua xyoo. Cov cai kuj tseem xav tau kev ntsuas hloov pauv rau cov ntawv thov tsis tseem ceeb los ntawm Q2 2024.
Tib lub sijhawm ntawd, Lub Chaw Tiv Thaiv Ib Puag Ncig ntawm Tebchaws Meskas (EPA) tau pib tshuaj xyuas MC txoj cai raws li Txoj Cai Tswj Xyuas Cov Khoom Siv Lom Zem (TSCA), nrog rau cov kev tshawb pom thawj zaug qhia tias muaj kev txwv nruj dua rau qhov chaw ua haujlwm hauv huab cua - tej zaum yuav txo qhov txwv ntawm 25 ppm mus rau 10 ppm. Cov kev ntsuas no lub hom phiaj yog los daws cov kev txhawj xeeb txog kev cuam tshuam mus sij hawm ntev ntawm cov neeg ua haujlwm hauv kev lag luam.
3. Kev Lag Luam Tshuaj Siv Cov Kev Xaiv Uas Ntsuab Dua
Kev lag luam tshuaj, uas yog ib lub tuam txhab siv Methylene Chloride ntau rau kev ua kom cov tshuaj siv tau zoo thiab rho tawm sai sai, tab tom ua kom cov kev sim tshuaj bio-based solvents sai dua. Ib txoj kev tshawb fawb uas tau tshuaj xyuas los ntawm cov phooj ywg tau luam tawm hauv *Green Chemistry* (Lub Yim Hli 2023) tau hais txog cov tshuaj uas tau los ntawm limonene ua cov tshuaj hloov MC hauv API (cov khoom xyaw tshuaj) synthesis, ua tiav cov txiaj ntsig zoo sib xws nrog 80% qis dua cov qauv tshuaj lom.
Txawm hais tias kev siv tshuaj tseem tsawg zuj zus vim muaj teeb meem kev ruaj khov ntawm cov tshuaj, cov nyiaj pab txhawb nqa los ntawm US Inflation Reduction Act yog cov nyiaj pab rau cov chaw sim uas mob siab rau kev nthuav dav cov kev xaiv no. Cov kws tshuaj ntsuam xyuas kwv yees tias yuav txo qis 15-20% ntawm kev thov MC los ntawm cov tshuaj los ntawm xyoo 2027 yog tias cov qauv R&D tam sim no tseem muaj.
4. Kev nce qib hauv MC Risk Mitigation Technologies
Cov kev tswj hwm tshiab hauv kev tsim kho tshiab tab tom txo qis cov kev phom sij ntsig txog MC. Ib pab pawg tshawb fawb hauv North America nyuam qhuav tshaj tawm lub tshuab lim dej nanoparticle uas rhuav tshem cov MC seem hauv cov dej khib nyiab mus rau hauv cov khoom tsis muaj tshuaj lom xws li chloride ions thiab carbon dioxide. Cov txheej txheem photocatalytic, ua haujlwm los ntawm lub teeb UV qis zog, ua tiav 99.6% kev ua haujlwm degradation thiab tau koom ua ke rau hauv cov chaw kho dej khib nyiab.
Tsis tas li ntawd xwb, cov khoom siv tiv thaiv tus kheej (PPE) tiam tom ntej uas muaj cov graphene-enhanced respirators tau qhia txog 98% kev ua haujlwm zoo hauv kev thaiv cov pa MC thaum lub sijhawm ua haujlwm raug ntau xws li tshem xim. Cov kev txhim kho no sib xws nrog OSHA cov lus qhia tshiab uas hais txog kev tswj hwm kev raug rau cov neeg ua haujlwm MC.
5. Kev Hloov Pauv Lag Luam Uas Muaj Kev Ruaj Ntseg
Txawm hais tias nws lub luag haujlwm ruaj khov, Methylene Chloride ntsib kev nyuaj siab los ntawm ESG (ib puag ncig, kev sib raug zoo, kev tswj hwm) cov qauv kev nqis peev. Ib daim ntawv ntsuam xyuas xyoo 2023 los ntawm tus kws tshuaj ntsuam xyuas kev lag luam tshuaj lom neeg tau qhia tias 68% ntawm cov chaw tsim khoom lag luam tam sim no muab qhov tseem ceeb rau cov neeg muab khoom nrog cov phiaj xwm txo qis MC uas tau txheeb xyuas. Qhov sib txawv no tab tom txhawb kev tsim kho tshiab hauv cov khoom siv rov qab los ntawm cov kuab tshuaj thiab cov txheej txheem tsim khoom bio-hybrid.
Qhov tseem ceeb, ib qhov project pilot hauv Southeast Asia tau ua tiav synthesize MC siv methane chlorination powered by renewable energy, txiav cov pa roj carbon ntawm kev tsim khoom los ntawm 40%. Txawm hais tias cov teeb meem scalability tseem muaj, cov kev pib no qhia txog kev hloov pauv ntawm cov tshuaj lom neeg mus rau decarbonized solvent ecosystems.
Xaus Lus: Kev Sib Npaug ntawm Kev Pabcuam thiab Lub Luag Haujlwm
Vim tias Methylene Chloride tseem ceeb heev rau cov ntawv thov tseem ceeb, kev lag luam tsom mus rau kev tsim kho tshiab thiab kev ua raws li txoj cai lij choj tab tom ua kom muaj zog. Kev sib koom tes ntawm cov txheej txheem rov qab zoo tshaj plaws, cov kev xaiv muaj kev nyab xeeb dua, thiab cov cai hloov pauv yuav txhais MC lub luag haujlwm hauv lub neej yav tom ntej uas tsis muaj carbon ntau. Cov neeg koom tes thoob plaws hauv cov saw hlau muaj nqis tam sim no yuav tsum taug kev theem hloov pauv no - qhov twg kev ua haujlwm zoo thiab kev saib xyuas ib puag ncig sib sau ua ke - kom ruaj ntseg mus sij hawm ntev.
Lub sijhawm tshaj tawm: Plaub Hlis-07-2025