Wanhua Chemical Group Co., Ltd. tau txais kev tso cai tsim khoom muaj feem xyuam rau toluene diisocyanate (TDI) ntau lawm, raws li Tuam Tshoj National Intellectual Property Administration. Lub npe "Toluene Diisocyanate Production System thiab Toluene Diisocyanate Production Method," patent tau tso cai raws li kev tshaj tawm xov tooj CN121338372B. Daim ntawv thov No. 202511495652.1 tau xa rau Lub Kaum Hli 20, 2025 thiab tau tso cai rau Lub Xya Hli 24, 2026.
Daim ntawv patent piav qhia txog TDI cov txheej txheem tsim khoom uas suav nrog kab kev kho kom raug, kev faib- phab ntsa thiab cov kav dej sib txuas. Txoj kev faib- phab ntsa kem suav nrog cov seem rau lub teeb- tshem tawm cov khoom siv, kev tswj cov isomer piv thiab hnyav- cov ntsiab lus concentration, ua kom huv, tshem tawm impurity thiab hloov isomer piv.
Txhim kho TDI Purification thiab cov khoom tswj kom zoo
TDI yog ib qho tseem ceeb polyurethane raw khoom. Cov khoom lag luam feem ntau muaj 2,4-TDI thiab 2,6-TDI, thiab lawv cov txheeb ze feem cuam tshuam cuam tshuam rau kev coj cwj pwm thiab cov khoom siv kawg.
Raws li cov ntawv thov polyurethane dhau los ua tshwj xeeb, cov neeg siv qis qis xav tau ntau dua TDI purity, stability thiab qib yooj. patent qhia txog cov kev txwv hauv kev ua kom huv, suav nrog kev sib cais tsis zoo, kev hloov pauv isomer txwv, cov cuab yeej nyuaj thiab kev siv zog siab.
Wanhua yog li no thov kom muab cov kab kev kho kom haum nrog kev faib -kab ntsa. Crude TDI yog thawj zaug sib cais nyob rau hauv lub rectification kem, thaum lub sib faib - phab ntsa kem ntxiv tshem tawm lub teeb thiab hnyav impurities thiab tsim TDI nrog ib tug controllable isomer piv.
Peb Cov Kev Qhia Tshwj Xeeb: Purity, Isomer Control thiab Energy Efficiency
patent tsom rau kev txhim kho hauv peb thaj chaw.
Ua ntej, nws nce TDI purity thiab txo impurity theem.
Cov chaw ua haujlwm sib txawv hauv kev faib- phab ntsa kem ua ke kho lub teeb thiab hnyav impurities los txhim kho kev sib cais. patent hais tias cov txheej txheem tuaj yeem ua tiav TDI purity tsawg kawg yog 99.95 wt% thiab hydrolysable chlorine cov ntsiab lus tsis ntau tshaj 10 ppm.
Hydrolysable chlorine yog ib qho tseem ceeb TDI qhov taw qhia zoo. Cov qib qis tuaj yeem txhawb nqa cov khoom lag luam zoo dua thiab kev ua haujlwm qis.
Thib ob, nws txhim kho isomer piv hloov kho yooj.
Qhov no yog ib qho ntawm patent lub ntsiab technical nta.
Ib qho isomer ratio tswj seem yog ntsia rau hauv kev faib- phab ntsa kem, nrog rau ob peb lub ntsiab lus tshem tawm nyob rau hauv kab qhov siab. Multi-theem rho tawm tso cai rau TDI cov khoom uas tswj tau isomer piv tau sau.
Cov txheej txheem tuaj yeem kho qhov sib piv ntawm 2,4-TDI rau 2,6-TDI thiab tsim cov isomer sib txawv, txhim kho kev yooj yim thaum hloov ntawm cov khoom qib.
Thib peb, nws yooj yim rau cov cuab yeej siv thiab txo qis kev siv hluav taws xob ntau lawm.
Los ntawm kev sib koom ua ke kev kho, stripping thiab isomer piv tswj hauv kev faib- phab ntsa, cov txheej txheem tuaj yeem txo cov khoom siv thiab kev siv hluav taws xob.
Los ntawm Kev Sib Tw Muaj Peev Xwm rau Technology-Kev Sib Tw Raws Li
Tuam Tshoj txoj kev lag luam TDI tau nthuav dav sai, nrog cov neeg tsim khoom hauv tsev tau nce cog nplai thiab muaj peev xwm muab tau. Raws li kev sib tw intensifies, ntau lawm stability, cov khoom zoo thiab txawv cov khoom kev loj hlob yog qhov tseem ceeb. Wanhua's patent tsis hloov txoj hauv kev tsim TDI; xwb, nws optimizes downstream purification thiab sib cais los txhim kho purity tswj thiab isomer piv hloov. Kev pom zoo patent lees paub cov kev daws teeb meem, tab sis daim ntawv thov kev lag luam tseem yuav tsum tau ua pov thawj ntawm kev ua haujlwm ruaj khov, kev lag luam thiab kev ua haujlwm ntawm cov khoom.
Zuag qhia tag nrho, patent qhia txog Wanhua qhov kev nqis peev txuas ntxiv hauv isocyanate purification thiab hloov tau yooj yim. Raws li cov kev siv qis qis dhau los ua qhov tshwj xeeb, TDI zoo dua thiab kev ua haujlwm ntau dua yuav dhau los ua cov lus qhia tseem ceeb rau kev txhim kho kev lag luam yav tom ntej.