PTA, Ntshaw Terephthalic Acid, yog ib yam tseem ceeb raw li DOTP. Yuav tsim tau 1mt DOTP xav txog 0.44mt PTA.
Nyob rau hauv 2004, Tuam Tshoj tus tsim tawm ntawm PTA tau 4,835 lab tons. Nrog kev nkag teb chaws ntawm cov tuam txhab lag luam thiab txawv teb chaws peev, PTA tso zis sai sai. Nyob rau xyoo 2005, cov zis tau nce mus txog 5.895 lab tons (qhov tseeb cov khoom muaj peev xwm nce txog 6.035 lab tons), tawm sab qab teb Kauslim (5.76 lab tons), Suav Cov Taiwan (4.94 lab tons) thiab Asmeskas qab. Lub teb chaws Suav tsim tawm ntawm PTA tsuas yog siv ib feem ntawm 20% hauv Asmelikas xyoo 2005, 25% ntawm 2006, thiab daim duab yuav muaj txog li ib feem peb (tshaj 10 lab tons) hauv xyoo 2007.
PTA khoom nyob rau hauv Suav teb yog tsuas yog los ntawm cov khoom lag luam, cov tuam txhab ntiag tug thiab Sinopec Group, thiab lawv suav txij 53%, 22% thiab 22% feem pua hauv 2005. CNPC tsuas yog siv 3%. Txawm li ntawd los, cov koomhaum lag luam thiab cov koomhaum sib koom nrog yuav ua haujlwm tseemceeb rau yav tomntej.
Nyob rau hauv 2005, PTA coob nyob rau Suav teb los txog 12.14 lab tons, noj 42% ntawm lub ntiaj teb tag nrho kev xav tau (28,8 lab tons). PTA cov zis tau txais 5.65 lab tons thiab, ntshuam 6.495 lab tons. Cov degree ntawm dependence ntawm cov khoom muaj nqis yog 54%. Qhov kev thov tseem tseem yuav loj tuaj, thiab cov neeg xav tau thiab kev pabcuam ntawm PTA yuav tsis khwv nyiaj nyob rau ob peb xyoos tom ntej no. Tshaj li, EG qhov kev thov tau tsim rau 5.102 lab tons, ib feem ntawm 45% ntawm lub ntiaj teb thov. Thiab cov EG zis tau nce 1.1 lab tons thiab plaub vam tons tau tuaj. Cov degree ntawm dependence ntawm kev tuaj yeem yog 80%.
Nyob rau hauv xyoo tas los, lub xyoo nce kev noj yog ntawm 1.3 lab tons thiab 2 lab tons. Qhov no coj mus rau qhov puas nce nqi hauv Esxias kev lag luam. Txij xyoo 2005, PTA noj nyob hauv Suav tau siv peb feem ntawm ntiaj teb PTA noj thiab 50% ntawm tag nrho cov khoom noj khoom haus hauv Asia. Kev nce qib ntawm PTA pom tau ntau xyoo 2001-2005 tau txais 6.67 lab tons nrog kev nce nruab nrab ntawm 22.05%. Qhov tso zis ntxiv yog mus txog rau 2.3 lab tons nrog tus nqi nruab nrab txhua xyoo ntawm 24.47%. Thiab lub ntim tuaj txawv teb chaws tuaj ntawm 3.11 lab tons hauv xyoo 2001 rau 6.49 lab tons rau xyoo 2005 nrog kev nce nruab nrab ntawm 20.12%.
95.6% ntawm cov PTA txawv teb chaws hauv Suav Tebchaws no yog los ntawm Esxias Regions thiab, 4% yog los ntawm North America thiab Europe. Thaum Jan-Aug, 2006, Tuam Tshoj tus ntshiab ntawm thaav tha roj acid ntawm 4.86 lab tons (nce 12.8% ntawm xyoo-rau-xyoo) muaj nqis npaum li $ 4.13 billion (xyoo nce ntawm 20.4%).
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