Producing high-purity salt requires large amounts of energy to evaporate water from brine. Traditionally, this process depends on gas-fired steam, resulting in significant energy use and CO₂ emissions. At our Mariager site in Denmark, we have taken an important step toward lower-carbon salt production with the development of a new, fully electrified salt factory. 

At the heart of the new evaporation plant is mechanical vapor recompression (MVR), a technology that compresses and recirculates process steam so heat can be reused instead of released.

This significantly reduces the external energy required for evaporation, one of the most energy-intensive steps in vacuum salt production. By switching from fossil-based steam to electricity, the process becomes both more efficient and substantially lowers carbon emissions.

The MVR installation is part of a broader electrified setup at Mariager, enabling the site to operate more flexibly and better align electricity use with the availability of renewable energy. This supports the integration of variable wind and solar power and contributes to a more resilient energy system. 

In addition to improving energy efficiency and reducing CO₂ emissions compared with conventional evaporation processes, the installation increases production capacity by around 60%. This strengthens Nobian’s position as a reliable supplier of high-purity vacuum salt and demonstrates how electrification technologies such as MVR can help decarbonize energy-intensive industrial processes while maintaining strong operational performance.