Carbon capture is an existing technology, but it has not previously been used for pulp mill flue gases. During the autumn of 2025, various operating models will be tested concerning aspects such as energy consumption and the amount of carbon captured. The pilot period will also provide information about the need for flue gas treatment and the quality of the end product.
As part of the piloting, Metsä Group will also investigate possibilities for a larger-scale demo plant for carbon capture at the Rauma mill site. The annual capacity of a demo plant would be 30,000 to 100,000 metric tons of captured carbon dioxide. No decision has been made regarding the project or the demo plant’s location. Implementing the project would require all technical and financial issues to be resolved. The larger-scale demo plant would have a capacity more than one hundred times that of the pilot plant, which can capture approximately one tonne of carbon dioxide per day.