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The LG Chem Daesan Complex is a major integrated petrochemical facility located in Daesan, Seosan-si, Chungcheongnam-do, South Korea. It is one of LG Chem’s core manufacturing sites and a significant contributor to both the company’s and the region’s chemical industry output. The complex began commercial operations in 1989 and has since expanded to become one of South Korea’s leading petrochemical production hubs. It is operated exclusively by LG Chem and is part of the company’s global network of production facilities.

Daesan Complex — Petrochemical Product Flow Diagram and Capacities* as of June 2024 (Source)

*Companies identified with their Korean name, written next to ther production capacity:
롯데케미칼 (Lotte Chemical) | LG화학 (LG Chem) | 한화토탈에너지스 (Hanwha TotalEnergies) | HD현대케미칼 (HD Hyundai Chemical) | HD현대오일뱅크 (HD Hyundai Oilbank) | 코오롱인더스트리 (Kolon Industries) | 한화솔루션 (Hanwha Solutions) | 현대OCI (Hyundai OCI)

As of June 2024, plant capacities shown in the attached product flow diagram include:

Naphtha Cracker

• Ethylene: 1,300,000 t/y
  • Polyethylene (LDPE/LLDPE): 260,000/556,000 t/y
  • Vinylchloride Monomer (VCM): 230,000 t/y
    • Polyvinyl Chloride (PVC): 240,000 t/y
  • Ethylene Oxide (EO):
    • Ethylene Glycol (EG): 180,000 t/y
• Propylene: 680,000 t/y
  • Polypropylene (PP): 380,000 t/y
• Mixed C₄:
  • Butadiene: 235,000 t/y
    • Butadiene Rubber (BR): 220,000 t/y
    • S-SBR: 80,000 t/y
    • NBR: 65,000 t/y
  • C₄ Raffinate-1
    • MTBE: 220,000 t/y
• Cracker Bottoms:
  • Petroleum Resin: 40,000 t/y

BTX Plant

• Benzene: 380,000 t/y
  • Phenol/Acetone: 360,000/225,000 t/y
    • Bisphenol A (BPA): 165,000 t/y