"Through the lignin extraction process we have replaced a great amount of natural gas with the dried lignin produced in the new LignoBoost plant, and by doing that reduced our carbon dioxide emissions," says Sakari Eloranta, Senior Vice President, Operations and Investment Projects, Stora Enso Biomaterials.
LignoBoost is one of Valmet's biotechnology solutions that responds to the growing interest for utilizing bio-based raw materials. LignoBoost is Valmet's patented method of extracting lignin from Kraft Pulp process' spent cocking chemicals, the black liquor. By treating the black liquor with carbon-dioxide and a strong acid the lignin is precipitated, which is then washed and dried.
Stora Enso Biomaterials offers a variety of pulp grades to meet the demands of paper, board and tissue producers. The Sunila mill has an annual capacity of 370,000 ton of softwood pulp.
Valmet is the leading global developer and supplier of technologies, automation and services for the pulp, paper and energy industries.
