Technology
IndianOil's Purified Terepthalic Acid (PTA) plant was
commissioned at Panipat Refinery, Haryana in June 2006 as a response to expansion
in the downstream polyester sector and also in the light of liquid fuel (Naphtha)
surpluses in the Northern Sector. The fully integrated plant uses Para Xylene (PX)
produced by Panipat Refinery as the main feed stock for manufacture of PTA. PX is
produced from aromatic rich heart cut of Naphtha.
Initially crude Terepthalic Acid is produced through oxidation of PX in the presence
of a catalyst. Crude Terepthalic Acid is then purified through a process of hydrogenation,
crystallization, centrifuging and drying to produce PTA. While PX plant is based
on the latest UOP technology, PTA plant is based on the proven Invista T10 (currently
DuPont) technology.
The PX-PTA plant had a capital outlay of around Rs.5100 crores. The nameplate capacity
of 3,60,000 TPA of in-house PX is ideally matched with the rated capacity of 5,53,000
TPA of PTA. Benzene to the tune of 25,000 TPA is generated during the process and
is separated out by fractionation.
Applications
PTA is predominantly used as a raw material in manufacture of Polyester Staple Fibres,
Polyester Filament Yarns and Polyethylene Terepthalate in conjunction with Mono
Ethylene Glycol (MEG). Polyester Fibres/Yarns find application in the production
of textiles and films. PTA also finds use in small quantities in the manufacture
of paints, etc.
Advantages of Invista T10 Technology
The Invista T 19 technology is a proven and widely used process which provides the following advantages:
- Consistent mean particle size - helps in better control of operating parameters
in downstream process
- Less Para-Toluic acid content - leads to better polymerization
- Product is suitable for application across all segments of the polyester sector.
For more information please visit
https://propel.indianoil.in
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Updated on February 21, 2013
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