Los ntawm qhov kev xav ntawm cov ntaub ntawv raw, Sinopec tus nqi o-xylene tseem nyob ruaj khov rau lub sijhawm, thaum lub sijhawm ua lag luam kev lag luam ntawm naphthalene, cov khoom siv raw rau naphthalene-based phthalic anhydride, tsis muaj zog thiab cov nqi pheej yig. Kev poob qis ntawm cov nqi raw khoom tau ua rau tsis muaj zog ntawm cov nqi txhawb nqa ntawm phthalic anhydride, muab chav rau tus nqi ntawm naphthalene-based phthalic anhydride kom poob.
Los ntawm kev xav ntawm cov khoom siv thiab kev xav tau, kev lag luam ortho-phthalic anhydride kev lag luam tau ua haujlwm nyob rau theem siab, thiab cov khoom lag luam muaj qhov txaus txaus, tab sis qhov kev xav tau qis qis qis, uas tau ua rau muaj kev tsis txaus siab ntawm cov khoom siv thiab kev xav tau. Vim qhov kev thov tsis txaus nyob rau hauv lub lag luam davhlau ya nyob twg, kev khiav hauj lwm tus nqi ntawm downstream plasticizer tuam txhab uas muag ntawm phthalic anhydride tseem tsis tau tag nrho rov qab mus rau theem siab ua ntej lub Xyoo Tshiab, thiab kev noj cov phthalic anhydride yog txwv. Kev khiav hauj lwm siab ntawm kev lag luam phthalic anhydride tau ua rau muaj kev nce ntxiv ntawm cov khoom muag siab. Nyob rau hauv cov ntsiab lus ntawm oversupply, lub lag luam tus nqi ntawm phthalic anhydride yog nyob rau hauv downward siab.
Kev cuam tshuam los ntawm qhov tsis sib xws ntawm cov khoom siv thiab kev xav tau thiab qhov kev poob qis hauv cov nqi, kev lag luam kev xav ntawm phthalic anhydride kuj tau pom tias muaj kev ntxhov siab ntau ntxiv. Cov tub lag luam thiab cov tuam txhab qis qis tseem muaj kev xav tsis zoo txog kev ua lag luam yav tom ntej thiab muaj kev txaus siab yuav khoom tsawg. Txhawm rau kom tsis txhob muaj kev pheej hmoo, qee lub tuam txhab xaiv los txo cov kev yuav khoom lossis ncua sijhawm yuav cov phiaj xwm, ua rau muaj kev ntxhov siab ntxiv hauv kev ua lag luam.
Saib tom ntej, cuam tshuam los ntawm kev poob qis hauv tus nqi ntawm cov khoom siv raw khoom siv naphthalene, tus nqi them nyiaj ntawm phthalic anhydride kev lag luam tau tsis muaj zog, ua ke nrog qhov muaj zog tos-thiab-pom kev xav hauv kev ua lag luam, kev poob qis ntawm cov nqi hauv lub sijhawm luv yog qhov tseem ceeb. Tus nqi sib txawv ntawm phthalic anhydride los ntawm cov txheej txheem ortho-naphthalene yuav tsum nthuav dav, thiab kev ua lag luam xa khoom kuj tseem loj. Cov khoom lag luam sab nrauv tseem tab tom ntsib qee qhov kev ntxhov siab, uas ntxiv rau tus nqi ntawm phthalic anhydride. Nyob rau tib lub sijhawm, qhov kev thov rau lub lag luam tseem ceeb ntawm cov yas yas yas txuas ntxiv tsis muaj zog, ua rau nws nyuaj rau kev tsim kev txhawb nqa zoo rau kev ua lag luam, thiab cov nyhuv counter-siab tseem tsis hloov. Nrog rau kev ceev faj ntawm kev lag luam, kev lag luam kev lag luam huab cua yuav txuas ntxiv teeb. Ntawm qhov tod tes, vim yog qhov superposition ntawm ntau yam tsis zoo xws li kev txhawb nqa tsis txaus ntawm tus nqi, kev xav tau tsis muaj zog thiab kev xa khoom xa tuaj, nws xav tias qhov chaw nruab nrab ntawm lub ntiajteb txawj nqus ntawm kev lag luam phthalic anhydride hauv tsev yuav poob mus ntxiv rau lub sijhawm luv luv, thiab tag nrho cov qauv yuav tsis muaj zog.
Post lub sij hawm: Mar-20-2025