Kumho Mitsui Chemicals Uses Thyssenkrupp Nucera Technology for MDI Production

Plant Engineering Kumho Mitsui Chemicals Uses Thyssenkrupp Nucera Technology for MDI Production

2025-06-17 Updated on 2025-06-17 Source: Press release Thyssenkrupp Nucera 2 min Reading Time

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Thyssenkrupp Nucera has designed and supplied a chlor-alkali plant for Kumho Mitsui Chemicals in Yeosu, South Korea. The company’s latest generation of e-Bitac v7 electrolyzer technology is currently being used by KMCI for improving its production process of Methylene Diphenyl Diisocyanate.

Thyssenkrupp Nucera has designed and supplied a chlor-alkali plant for KMCI in Yeosu, South Korea with a capacity of 60,000 tons per year of chlorine production. (Source: Thyssenkrupp Nucera) — Thyssenkrupp Nucera has designed and supplied a chlor-alkali plant for KMCI in Yeosu, South Korea with a capacity of 60,000 tons per year of chlorine production.
(Source: Thyssenkrupp Nucera)

Tokyo/Japan – Kumho Mitsui Chemicals (KMCI) has enhanced its production process of Methylene Diphenyl Diisocyanate (MDI) by utilizing the latest generation e-Bitac v7 electrolyzer technology from Thyssenkrupp Nucera. The supplier of world-leading technologies for high-efficiency electrolysis plants designed and supplied a chlor-alkali plant for KMCI in Yeosu, South Korea with a capacity of 60,000 tons per year of chlorine production. Recently, the operation of the plant has been started successfully.

KMCI, a South Korean petrochemical company and a world-leading polyurethane maker, will use the produced chlorine for MDI production – replacing imported raw material of chlorine. MDI is an essential raw material for production of Spandex, TPU (Thermoplastic polyurethane), synthetic leather, shoes, paints, coating, adhesives, and various elastomers.

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Furthermore, the chlor-alkali plant will recycle by-product brine from MDI production which is usually discharged as effluent. This enables KMCI to comply with stringent environmental regulations on industrial effluent in a cost-effective manner and to reduce their environmental footprint. “The start-up of our new chlor-alkali plant is an important step to expand our production capacities and to secure an independent supply of MDI without importing chlorine. It also underlines our commitment to supplying eco-friendly products,” says Kwon Hyung Seob General Manager of KMCI.

Thyssenkrupp Nucera initially supplied a lab cell facility as a pilot test and verified the technical feasibility for operating the chlor-alkali plant with waste brine from MDI process. Afterwards, in 2021, the electrolyzer specialist was awarded an EP contract to design and supply the entire chlor-alkali plant. “Once again, our proven electrolysis technology made an important contribution to our clients’ path to improve their production processes and reduce their environmental footprint. By recycling by-product brine, KMCI and Thyssenkrupp Nucera have jointly addressed one of the major concerns of the polyurethane industry,” says Akira Shigeta, CEO of Thyssenkrupp Nucera Japan.

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