A number of different technologies are used to separate lignin from black liquor. In some processes, black liquor is taken from the evaporation plant and the pH is lowered with carbon dioxide (CO2). The precipitated lignin is then dewatered.
The separated lignin can then be used as fuel in the lime kiln or as a cost-effective and versatile alternative to fossil raw materials. The growing number of added-value products made from lignin include biopolymers such as resins and bio-plastics, as well as adhesives, carbon fibres and biofuel.
- Optimised recovery of lignin
- Tailored CO2 bulk supply scheme
- End-to-end offering including ACTICO® flow control unit, ACTICO® injectors and reactor for separation reaction
Contact a Linde expert