LOTTE Chemical Pakistan LTD

LOTTE Chemical Pakistan LTD (Formerly LOTTE Pakistan PTA LTD)
EZ/1-P-4, Eastern Industrial Zone, Bin Qasim, Karachi-74200.

Lotte Chemical Pakistan Ltd is a world-class supplier of purified terephthalic acid, an essential raw material used in the polyester industry. Lotte, the South Korean conglomerate, acquired the majority shareholdings in Pakistan PTA Limited (PPTA) in September 2009. Subsequently, the name of the Company was changed to Lotte Chemical Pakistan Ltd. Lotte Chemical Pakistan Ltd is the single largest f

oreign direct investment to date (US$ 490 million) in Pakistan’s petrochemical industry. The plant at Port Qasim, Karachi was built using ICI’s state-of-the-art technology when it was commissioned in 1998. It produces Purified Terephthalic Acid (PTA), an essential raw material for Pakistan’s textile and PET packaging industries and forms the backbone of the polyester chain, including Polyester Staple Fibre, Filament Yarn and PET (bottle grade) resin. In addition to its own manufacturing facilities, the Company has helped create a large infrastructure network at the Port Qasim vicinity, which includes a chemical jetty, raw water pipeline and manufacture of industrial gases through third party contracts. It has therefore been a trendsetter in industrial investment in Pakistan. The PTA plant was constructed in 1996/97 and started production in June 1998. Within a short time, PPTA’s dedicated and highly motivated team of professional engineers proved that it could run this complex plant to world standards of safety, environmental care, product quality and process efficiency. Since 2002 the plant has operated above its nameplate capacity of 400,000 tons per annum and following minor de-bottlenecking and process improvements, is capable of ramping that up to 500,000 tons per annum. The plant remains one of the most advanced facilities in its class in the region. The company maintains its competitive edge by virtue of being a local manufacturer and major supplier for the domestic Polyester and PET industries with short delivery times, consistent quality and excellent customer service.

Address

Lotte Chemical Pakistan Ltd EZ/1/P-4, Eastern Industrial Zone, Port Qasim, PO Box 723 Karachi - 74200
Karachi
74200

Telephone

03343303393

Website

Products

PTA
Production of PTA to the necessary purity at large scale is a complex process, and only a few companies in the world have developed successful proprietary technology and know–how in this process. ICI plc UK acquired PTA technology in the 1960s. ICI developed this technology and applied it in its owned and licensed plants in UK, Taiwan, Indonesia, India, Pakistan and China. In 1998 ICI plc divested its worldwide polyester business and technology to DuPont. The technology was later sold by Dupont and is currently owned by Invista Performance Technologies (IPT). The PTA plant in Pakistan was not included in the divestment, so the Port Qasim PTA plant now operates under a technology license from IPT giving it access to the developing technology and know-how from IPT.

PROCESS
Purified Terephthalic Acid (PTA) is made by the oxidation of Paraxylene, using Acetic Acid as a solvent. In the first stage, which is known as Oxidation, air is blown into a stirred reactor vessel containing a mixture of Paraxylene, Acetic Acid and a catalyst. Crude terephthalic acid is formed, crystallised out and dried.
In the second stage known as purification, the crude TA is re-dissolved in hot water, co-products are removed by hydrogenation and pure terephthalic acid is again crystallised out and dried. This ensures that the 99.98% purity required for the manufacture of polyester products is achieved.
Various ancillary stages are required to ensure waste recovery and raw material efficiency and the process requires nitrogen, hydrogen, natural, large quantities of fresh water and significant electrical power.
Methyl Acetate is produced as a by-product, which is recycled to Oxidation reactor to minimize acetic acid losses.
Liquid effluent from the process is biologically treated using a deep shaft technology, so that the final water being discharged fully conforms to the National Environmental Quality Standards (NEQS).

SPECIFICATIONS
Appearance White, free flowing crystalline powder, free from visible contamination
Acid Number(mg KOH/g) 675 + 2
4-Carboxybenzaldehyde (ppm w/w) Max 20
p-toluic acid (ppm w/w) Max 170
Benzoic acid (ppm w/w) Max 30
Al,Ca,Co,Cr,Fe,K,Mg,Mn,Na,Ni,Ti,(ppm w/w) None greater than 1 and in total max 4
Water (% pct w/w) Max 0.15
Ash (ppm w/w) Max 6
Millipore Min 0.90
Appearance compared with standard Acceptable
b* colour 0.4 - 1.2
Typical Physical Properties
Molecular weight 166.13
Melting Point in sealed tube (°C) 425 (sublimation occurs above 300°C at atmospheric pressure).
Solubility 1 part in 67,000 parts water at 10 °C. Partially soluble in dimethyl formamide and pyridine.
Typical median particle size range (micron) 130 ± 25
Typical bulk density g/ml (DIN 53194) 1.12
Typical angle of repose (degrees) (poured) Poured 40

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