Conversion of dewatering to extraction of bark.
|Coordinator||Umeå universitet - Institutionen för datavetenskap|
|Funding from Vinnova||SEK 525 000|
|Project duration||September 2019 - February 2020|
|Venture||Strategic innovation programme for process industrial IT and automation – PiiA|
|Call||Digitization of industrial value chains|
Purpose and goal
The aim of the project is to determine whether it is possible to extract tannins from bark from Swedish trees in a continuous process with the help of a bark press. Bark presses are used today only to squeeze out as much water as possible from the bark before it is burne; extraction of tannins takes place mainly from indigenous tree species in subtropical countries using discrete methods. Our hypothesis is that bark presses can be used to extract tannins from bark in a continuous process. The aim is to test this on a pilot scale during the project.
Expected results and effects
When the project is over, this will have been tested on a pilot scale and, based on the outcome, a decision can be made to proceed with the implementation of a larger R&D project and, in the long run, develop a product. The FUI project will create a completely new product from Swedish forests by adapting the equipment that already exists at the pulp / paper mills. It will also provide better raw material utilization as the tannins are extracted from the bark that is otherwise only burnt.
Planned approach and implementation
The larger bark press manufacturers provide pilot-scale equipment, which will be set up at SCA Obbola and / or at SLU´s testing facility. The trials will be done in collaboration with researchers from SLU in order to optimize the process. SCA contributes all raw material (bark) during the project period and any analyzes in their laboratory. A chip / grinding machine available at SLU will be used to grind the bark. Chemical analysis of the press-water and compilation of the result will be done by researchers at SLU.