Kumho Mitsui Chemicals Inc. (KMCI) has successfully commenced operations of its new chlor-alkali plant in Yeosu, South Korea, integrating cutting-edge e-BiTAC v7 electrolyzer technology from thyssenkrupp nucera. The facility, with an annual chlorine production capacity of 60,000 tons, will now support KMCI’s core production of Methylene Diphenyl Diisocyanate (MDI)—a critical component in the manufacturing of polyurethane products. By producing chlorine in-house, KMCI eliminates dependence on imported chlorine, strengthening supply chain resilience and enhancing operational efficiency.
Strategic Step Toward Supply Chain Independence
KMCI, a global leader in polyurethane manufacturing, will now use the chlorine produced at this facility as a key raw material for MDI, which is essential for a wide range of products including:
*Spandex
*Thermoplastic Polyurethane (TPU)
*Synthetic leather
*Footwear
*Paints, coatings, and adhesives
*Various elastomers
“The start-up of our new chlor-alkali plant is an important step to expand our production capacities and secure an independent supply of MDI without importing chlorine,” said Kwon Hyung Seob, General Manager of KMCI. “It also underlines our commitment to supplying eco-friendly products.”
Closing the Loop: Waste Brine Recycling
In a significant environmental advancement, the new plant also recycles by-product brine from the MDI process—a waste stream that was previously discharged as industrial effluent. This closed-loop system enables KMCI to:
*Comply with stringent environmental regulations
*Reduce effluent discharge
*Lower overall environmental impact
*Improve cost-efficiency in waste management
Proven Technology Validated Through Pilot Testing
thyssenkrupp nucera played a pivotal role in the plant’s development. Initially, the company supplied a pilot lab cell facility to assess the feasibility of operating the plant using waste brine. Following successful trials, thyssenkrupp nucera was awarded an Engineering and Procurement (EP) contract in 2021 to design and supply the full chlor-alkali facility.
Electrolysis Innovation Driving Sustainable Chemistry
“Our proven electrolysis technology has once again contributed to a client’s drive to enhance production efficiency and sustainability,” said Akira Shigeta, CEO of thyssenkrupp nucera Japan. “By recycling by-product brine, KMCI and thyssenkrupp nucera have addressed one of the major environmental challenges in the polyurethane industry,” Shigeta added.
Towards a Greener Polyurethane Value Chain
As per company press release, the successful operation of KMCI’s chlor-alkali plant marks a key step in sustainable chemical manufacturing—combining innovation, environmental stewardship, and strategic independence in raw material sourcing.
