Process and apparatus for producing polyethylene terephthalate

Details Process and apparatus for producing polyethylene terephthalate Process and apparatus for producing polyethylene terephthalate

C - Chemistry, Metallurgy

08

G

C08G 63/668 (2006.01) B01D 3/34 (2006.01) B01D 5/00 (2006.01) B01D 53/86 (2006.01) C08G 63/78 (2006.01) C08G 63/183 (2006.01)

Patent

CA 2382777

In a process of producing polyethylene terephthalate by esterification of terephthalic acid with ethylene glycol and polycondensation, the vapors formed are rectified, the liquid phase is recirculated to the process, and the lower-boiling components are condensed. To obtain an almost completely stripped condensate, it is provided to circulate the condensate and strip the same with air as well as to subject the exhaust air to a catalytic oxidation.

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