Methylene Chloride yog ib qho tseem ceeb hauv kev lag luam, thiab nws txoj kev loj hlob ntawm kev lag luam thiab kev tshawb fawb yog cov ntsiab lus tseem ceeb. Tsab xov xwm no yuav piav qhia txog nws cov kev txhim kho tshiab los ntawm plaub yam: cov qauv kev ua lag luam, kev tswj hwm kev cai lij choj, cov qauv nqi, thiab kev nce qib tshiab ntawm kev tshawb fawb.
Cov Qauv Lag LuamKev ua lag luam thoob ntiaj teb muaj ntau heev, nrog rau peb lub tuam txhab tsim khoom loj tshaj plaws (xws li Juhua Group, Lee & Man Chemical, thiab Jinling Group) tuav cov feem ua lag luam ua ke ntawm kwv yees li 33%. Thaj av Asia-Pacific yog kev ua lag luam loj tshaj plaws, suav txog li 75% ntawm cov feem.
Kev Tswj Xyuas Kev Cai Lij Choj:Lub Chaw Tiv Thaiv Ib Puag Ncig ntawm Tebchaws Meskas (EPA) tau tshaj tawm txoj cai kawg raws li Txoj Cai Tswj Xyuas Cov Khoom Siv Lom Zem (TSCA) txwv tsis pub siv methylene chloride hauv cov khoom siv xws li cov tshuaj pleev xim thiab tsim cov kev txwv nruj rau kev siv hauv kev lag luam.
Cov Qauv Nqe: Thaum Lub Yim Hli 2025, vim muaj kev lag luam siab ua rau muaj kev muab khoom ntau, ua ke nrog lub caij tsis muaj kev thov thiab tsis txaus siab yuav khoom hauv qab, cov nqi ntawm qee cov chaw tsim khoom poob qis dua 2000 RMB / ton cim.
Kev Lag Luam:Txij lub Ib Hlis mus txog rau lub Tsib Hlis 2025, Tuam Tshoj txoj kev xa khoom ntawm methylene chloride tau nce ntxiv ntau heev (xyoo-rau-xyoo + 26.1%), feem ntau yog mus rau sab hnub tuaj Asia, Is Nrias teb, thiab lwm thaj chaw, uas pab txo qhov kev nyuaj siab ntawm kev muab khoom hauv tsev.
Cov ciam teb hauv Kev Tshawb Fawb Txog Kev Siv Tshuab Tshiab
Hauv kev tshawb fawb txog kev tshawb fawb, kev tshawb fawb txog methylene chloride thiab cov tshuaj sib xyaw ua ke tab tom nce mus rau qhov kev coj ua ntsuab dua thiab ua haujlwm tau zoo dua. Nov yog ob peb qhov kev coj ua tseem ceeb:
Cov Txheej Txheem Ua Kom Ntsuab Ntsuab:Ib pab pawg tshawb fawb los ntawm Shandong University of Technology tau tshaj tawm ib txoj kev tshawb fawb tshiab thaum lub Plaub Hlis 2025, uas tau tawm tswv yim txog lub tswv yim tshiab ntawm "magnetically driven redox." Cov thev naus laus zis no siv lub zog magnetic tig los tsim kom muaj lub zog electromotive hauv tus hlau conductor, yog li ntawd tsav cov tshuaj lom neeg. Txoj kev tshawb fawb no tau cim thawj zaug ntawm daim ntawv thov ntawm txoj kev no hauv kev hloov pauv hlau catalysis, ua tiav qhov kev sib txuas ntawm cov aryl chlorides uas tsis tshua muaj zog nrog alkyl chlorides. Qhov no muab txoj hauv kev tshiab rau kev ua kom cov tshuaj inert chemical bonds (xws li C-Cl bonds) nyob rau hauv cov xwm txheej tsis hnyav, nrog rau qhov muaj peev xwm siv dav.
Kev Txhim Kho Cov Txheej Txheem Sib Cais:Hauv kev tsim tshuaj lom neeg, kev sib cais thiab kev ntxuav yog cov kauj ruam tseem ceeb uas siv zog ntau. Qee qhov kev tshawb fawb tsom mus rau kev tsim cov cuab yeej tshiab rau kev sib cais cov tshuaj sib xyaw ua ke los ntawm kev tsim cov methylene chloride. Cov kev tshawb fawb no tau tshawb nrhiav kev siv methanol ua tus kheej-extractant los cais cov khoom sib xyaw ntawm dimethyl ether-methyl chloride nrog qhov tsis tshua muaj zog, lub hom phiaj yog los txhim kho kev ua haujlwm sib cais thiab ua kom zoo dua cov txheej txheem.
Kev Tshawb Fawb Txog Cov Ntawv Thov Hauv Cov Txheej Txheem Solvent Tshiab:Txawm hais tias tsis muaj feem cuam tshuam ncaj qha rau methylene chloride, kev tshawb fawb txog cov kuab tshuaj eutectic tob (DES) luam tawm hauv PMC thaum Lub Yim Hli 2025 yog qhov tseem ceeb heev. Kev tshawb fawb no tau muab kev nkag siab tob txog qhov xwm txheej ntawm kev sib cuam tshuam molecular hauv cov txheej txheem kuab tshuaj. Kev nce qib hauv cov thev naus laus zis ntsuab no tuaj yeem, nyob rau lub sijhawm ntev, muab cov hauv kev tshiab rau kev hloov qee cov kuab tshuaj organic ib txwm muaj, suav nrog methylene chloride.
Hauv kev xaus lus, kev lag luam methylene chloride tam sim no nyob rau hauv lub sijhawm hloov pauv uas muaj ob qho tib si lub cib fim thiab kev cov nyom.
Cov Kev Sib Twfeem ntau pom tseeb hauv cov kev cai ib puag ncig uas nruj zuj zus (tshwj xeeb tshaj yog hauv kev ua lag luam xws li Tebchaws Europe thiab Tebchaws Meskas) thiab qhov kev thov tsawg zuj zus hauv qee qhov chaw siv ib txwm muaj (xws li cov tshuab pleev xim).
Cov cib fim, txawm li cas los xij, nyob rau hauv qhov kev thov tas mus li hauv cov lag luam uas tseem tsis tau pom cov khoom hloov pauv zoo meej (xws li tshuaj thiab tshuaj synthesis). Tib lub sijhawm, kev txhim kho tas mus li ntawm cov txheej txheem tsim khoom thiab kev nthuav dav ntawm kev lag luam xa khoom kuj tseem muab lub zog rau kev txhim kho kev lag luam.
Kev txhim kho yav tom ntej yuav tsum tau siv zog ntau dua rau cov khoom lag luam tshwj xeeb uas ua tau zoo, huv si thiab kev tsim kho tshiab uas ua raws li cov ntsiab cai ntawm kev siv tshuaj ntsuab.
Lub sijhawm tshaj tawm: Cuaj hlis-26-2025