Plant #1 > PIA/PTA
PIA/PTA is produced with PX, catalyst, and acetic acid as raw materials. It is used as raw material not only for polyester fibers with excellent thermal resistance, insulation, mechanical strength, water resistance, and wear resistance but also for video and audio films and PET bottles closely related to our everyday life. It is used for industrial yarns as well.
■ Production process
01 Oxidation Reaction Process
A process wherein the liquid phase prepared in the raw material mixing tank reacts with oxygen. (With its reaction heat, steam is produced. After the O2 reaction in the air, N2 is utilized as pneumatic for air blow)
02 Solvent Refining Process
A process wherein the solvent (acetic acid) separated from the solid-liquid separation process is recovered
03 Solid-Liquid Separation Process
A process wherein TA CAKE is separated into solid and solvent.
04 Drying Process
A process wherein moisture from the wet cake separated from the solid-liquid separation process is completely dried.
05 Reduction Reaction Process
A process wherein the impurities contained in CTA/CIA are converted into water-soluble state (4-CBA p-Tol)
06 Solid-Liquid Separation Process
A process wherein TA CAKE is separated into solid and solvent (1st, 2nd)
07 Drying Process
A process wherein moisture from the wet cake separated in the solid-liquid separation process is completely dried
