Los ntawm qhov pom ntawm cov khoom siv raw, Sinopec tus nqi o-xylene tseem ruaj khov rau lub sijhawm tam sim no, thaum kev ua lag luam ntawm kev lag luam naphthalene, cov khoom siv raw rau naphthalene-based phthalic anhydride, tsis muaj zog thiab tus nqi txuas ntxiv poob qis. Kev poob qis ntawm cov nqi khoom siv raw tau ua rau kev txhawb nqa tus nqi ntawm phthalic anhydride tsis muaj zog, muab chaw rau tus nqi ntawm naphthalene-based phthalic anhydride kom poob qis.
Los ntawm qhov kev xav ntawm kev muab khoom thiab kev thov, kev lag luam ortho-phthalic anhydride ua haujlwm ntawm qib siab, thiab kev muab khoom hauv khw muaj txaus, tab sis qhov kev thov qis qis, uas ua rau muaj kev tsis sib npaug ntawm kev muab khoom thiab kev thov. Vim muaj kev thov tsis txaus hauv kev lag luam kawg, tus nqi ua haujlwm ntawm cov tuam txhab yas downstream ntawm phthalic anhydride tseem tsis tau rov qab zoo rau qib siab ua ntej Xyoo Tshiab, thiab kev siv phthalic anhydride tsawg. Tus nqi ua haujlwm siab ntawm kev lag luam phthalic anhydride tau ua rau muaj kev sib sau ua ke ntawm cov khoom muag. Hauv cov ntsiab lus ntawm kev muab khoom ntau dhau, tus nqi ua lag luam ntawm phthalic anhydride nyob rau hauv kev nyuaj siab.
Cuam tshuam los ntawm qhov tsis sib npaug ntawm kev muab khoom thiab kev thov thiab qhov sib txawv ntawm cov nqi qis, kev xav ntawm kev ua lag luam ntawm phthalic anhydride kuj tau qhia txog kev poob qis ntawm cov saw hlau. Cov tub luam thiab cov tuam txhab downstream tseem 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 kev yuav khoom lossis ncua cov phiaj xwm yuav khoom, ua rau muaj kev kub ntxhov hauv kev ua lag luam.
Saib mus tom ntej, cuam tshuam los ntawm qhov poob qis ntawm tus nqi ntawm cov khoom siv raw naphthalene kev lag luam, kev txhawb nqa tus nqi ntawm kev lag luam phthalic anhydride tau qaug zog, ua ke nrog kev tos thiab saib kev xav hauv kev lag luam, qhov kev nyuaj siab rau tus nqi hauv lub sijhawm luv luv yog qhov tseem ceeb. Qhov sib txawv ntawm tus nqi ntawm phthalic anhydride los ntawm cov txheej txheem ortho-naphthalene xav tias yuav nthuav dav, thiab kev tiv thaiv kev xa khoom hauv khw loj heev. Sab kev muab khoom hauv khw tseem ntsib qee qhov kev nyuaj siab, uas ntxiv suppresses tus nqi ntawm phthalic anhydride. Tib lub sijhawm, qhov kev thov rau lub khw plasticizer tseem ceeb tseem tsis muaj zog, ua rau nws nyuaj rau tsim kev txhawb nqa zoo rau kev lag luam, thiab qhov cuam tshuam tiv thaiv tseem tsis hloov pauv. Nrog rau lub siab ceev faj ntawm kev lag luam, huab cua kev lag luam hauv khw yuav txuas ntxiv mus rau lub teeb. Tag nrho, vim muaj kev sib sau ua ke ntawm ntau yam tsis zoo xws li kev txhawb nqa tsis txaus ntawm sab nqi, kev thov tsis muaj zog thiab kev tiv thaiv kev xa khoom, nws xav tias qhov chaw ntawm lub ntiajteb txawj nqus ntawm kev lag luam phthalic anhydride hauv tsev yuav txuas ntxiv poob qis hauv lub sijhawm luv luv, thiab qhov sib txawv tag nrho yuav tsis muaj zog.
Lub sijhawm tshaj tawm: Lub Peb Hlis-20-2025