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October 20, 2021updated 26 Apr 2022 12:36pm

S-Oil Corporation Ulsan Complex, South Korea

By Carmen

S-Oil Corporation Ulsan Complex is an active petrochemical complex located in Ulsan-gwangyoksi, South Korea. The complex started commercial operations in 1991 and currently has an active annual capacity of 5.5mtpa. Its capacity is expected to increase to 7.3mtpa in 2030. The plants in this complex are operated by S-Oil.

Key Products Capacity – S-Oil Corporation Ulsan Complex, 2020

Key products produced in this complex include xylenes, propylene, toluene, benzene, methyl tertiary butyl ether (MTBE) etc.

Xylenes accounts for major capacity share i.e., 33.6% of the total annual capacity of the complex with 1.85mtpa, followed by propylene and toluene with 16.5% (0.91mtpa) and 13.2% (0.73mtpa) respectively.

Details of key upcoming projects in S-Oil Corporation Ulsan Complex

The complex is set to add capacity with upcoming plant, S-Oil Corporation Ulsan Ethylene Plant 2 (1.8mtpa).

The complex also includes S-Oil Corporation Ulsan Polyethylene Plant, S-Oil Corporation Ulsan Polypropylene Plant 2, and S-Oil Corporation Ulsan Propylene Plant 3 for which the capacity information is not available/reported.

About S-Oil

S-Oil Corporation Inc (S-Oil), a subsidiary of Aramco Overseas Company BV is an oil refining and marketing company. It manufactures and sells oil refined oil, petrochemical and lube products. The company also imports and exports crude oil and refined products. It owns and operates an integrated refining lubricants and aromatic-type petrochemicals complex in Ulsan. The company’s major products include diesel, gasoline, kerosene, engine oil, bunker-C oils, lubricants, naphtha, paraffin oil, asphalt, benzene, xylene and toluene. It markets products in the domestic market through a distribution and marketing network that includes product distribution terminals, and branded retail service stations. The company operates as a subsidiary of Aramco Overseas Co BV. S-Oil is headquartered in Seoul, South Korea.


Information on the petrochemical complexes/plants is sourced from GlobalData’s oil & gas petrochemicals plants database that provides detailed information on all active and upcoming, petrochemical plants globally. Not all companies mentioned in the article may be currently existing due to their merger or acquisition or business closure.

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