Technology

thyssenkrupp nucera^® offerssolutions for the entire process, such as brine treatment, chlorine treatment, refrigerant free chlorine liquefaction or hypochlorite production as per illustration flow chart. Several electrolyzer technologies are available.

Bipolar membrane (BM) single element technology

The bipolar membrane (BM) 2.7v6 plus single element offers optimized design features and thus breaks the barrier of 1,980 kWh per metric tonne of NaOH at 6kA/m². Highlights are an accessible active area of 2.85m² and a longer membrane life under high current density operation beyond 6 kA/m².

Bipolar ion-exchange membrane process electrolyzer (BiTAC)  

The filter press bipolar ion-exchange  membrane process electrolyzer, BiTAC®,  offers specific advantages, such as fast remembraning of the complete electrolyzer. The BiTAC family is being constantly improved and all generations are compatible, so existing plants can easily be upgraded to the latest developments. The latest generation, eBiTAC-v7, pushes energy consumption to a new record low of 1,979 kWh/t NaOH at 6 kA/m².

Oxygen-depolarized cathode electrolysis technology (ODC) 

The NaCl-ODC (oxygen-depolarized cathodes) electrolysis technology is reliable and well-proven. It offers a higher degree of site flexibility with regard to electricity and hydrogen supplies.

Commercial Experience

thyssenkrupp nucera^® has been active in the chlor-alkali sector throughout the world for more than 60 years and realized over 600 electrolysis projects worldwide, implementing projects from small facilities to huge chlor-alkali plants with capacities of over 800,000 mt/year of NaOH.

References

1. thyssenkrupp nucera Chlor-Alkali Solutions. (accessed 20^th Apr 2025)