Cov Kev Siv Lag Luam ntawm Cov Cawv Yas Yas

Tam sim no, cov cawv yas uas siv dav tshaj plaws yog 2-propylheptanol (2-PH) thiab isononyl cawv (INA), feem ntau yog siv rau hauv kev tsim cov yas tiam tom ntej. Cov esters synthesized los ntawm cov cawv siab dua xws li 2-PH thiab INA muab kev nyab xeeb ntau dua thiab kev phooj ywg ib puag ncig.

2-PH ua rau muaj kev cuam tshuam nrog phthalic anhydride los ua di(2-propylheptyl) phthalate (DPHP). Cov khoom PVC uas tau ua los ntawm DPHP muaj kev rwb thaiv hluav taws xob zoo heev, tiv taus huab cua, tsis tshua muaj kev hloov pauv, thiab cov khoom siv physico-chemical qis, ua rau lawv siv tau dav hauv cov xov hlau, cov khoom siv hauv tsev, cov yeeb yaj kiab tsheb, thiab cov yas hauv pem teb. Tsis tas li ntawd, 2-PH tuaj yeem siv los ua cov tshuaj surfactants uas ua haujlwm tau zoo. Xyoo 2012, BASF thiab Sinopec Yangzi Petrochemical tau koom ua ke tsim lub chaw tsim khoom 2-PH uas muaj peev xwm tsim tau 80,000-ton-ib-xyoo, thawj lub Hoobkas 2-PH hauv Suav teb. Xyoo 2014, Shenhua Baotou Coal Chemical Company tau tsim lub chaw tsim khoom 2-PH uas muaj peev xwm tsim tau 60,000-ton-ib-xyoo, thawj qhov project 2-PH uas siv thee hauv Suav teb. Tam sim no, ntau lub tuam txhab uas muaj cov phiaj xwm thee-rau-olefin tab tom npaj 2-PH cov chaw, suav nrog Yanchang Petroleum (80,000 tons / xyoo), Tuam Tshoj Coal Shaanxi Yulin (60,000 tons / xyoo), thiab Inner Mongolia Daxin (72,700 tons / xyoo).

INA feem ntau yog siv los tsim diisononyl phthalate (DINP), uas yog ib yam khoom siv yas tseem ceeb rau kev siv dav dav. Pawg Sab Laj Thoob Ntiaj Teb ntawm Cov Khoom Ua Si tau suav tias DINP tsis muaj kev phom sij rau cov menyuam yaus, thiab nws qhov kev thov nce ntxiv hauv xyoo tas los no tau ua rau muaj kev siv INA ntau ntxiv. DINP siv dav hauv tsheb, cables, pem teb, kev tsim kho, thiab lwm yam kev lag luam. Thaum Lub Kaum Hli 2015, kev koom tes 50:50 ntawm Sinopec thiab BASF tau pib tsim khoom ntawm 180,000-ton-ib-xyoo INA cog hauv Maoming, Guangdong - tib lub chaw tsim khoom INA hauv Suav teb. Kev siv hauv tsev yog li ntawm 300,000 tons, tawm hauv qhov sib txawv ntawm kev muab khoom. Ua ntej qhov project no, Suav teb tau cia siab rau kev xa khoom tuaj rau INA, nrog 286,000 tons xa tuaj rau xyoo 2016.

Ob qho tib si 2-PH thiab INA yog tsim los ntawm kev cuam tshuam butenes los ntawm C4 ntws nrog syngas (H₂ thiab CO). Cov txheej txheem siv cov hlau zoo heev catalysts, thiab kev tsim thiab kev xaiv ntawm cov catalysts no tseem yog cov teeb meem tseem ceeb hauv kev tsim khoom hauv tsev 2-PH thiab INA. Nyob rau hauv xyoo tas los no, ntau lub tsev kawm ntawv tshawb fawb Suav tau ua tiav hauv kev siv tshuab tsim khoom INA thiab kev tsim cov catalyst. Piv txwv li, Tsinghua University's C1 Chemistry Laboratory siv cov octenes sib xyaw los ntawm butene oligomerization ua cov khoom noj thiab cov rhodium catalyst nrog triphenylphosphine oxide ua ligand, ua tiav 90% ntawm isononanal, muab lub hauv paus ruaj khov rau kev lag luam loj hlob.