Arrangement for feeding wood particles into impregnating

An arrangement for processing wood particles, comprising:

• a feed silo;
• at least one impregnating vessel configured to receive wood particles received therein to an impregnating stage of said wood treatment process;
• for feeding said wood particles into said impregnating stage, two or more conveyors between said feed silo and said at least one impregnating vessel, for transferring wood particles from said feed silo to said at least one impregnating vessel;
• and
• downstream from said impregnating stage, a reactor configured to subject wood particles impregnated in said impregnating stage to hemihydrolysis and steam explosion;
• wherein each of said two or more conveyors is a compressing conveyor for applying pressure to the wood particles on their way through the respective conveyor and comprises a respective conveyor input and a respective conveyor output,
• wherein each of said two or more conveyors is a plug screw feeder, and the conveyor input of a first conveyor of said two or more conveyors is coupled to said feed silo for receiving said wood particles from said feed silo, and
• the conveyor output of said first conveyor is coupled to the conveyor input of a second conveyor of said two or more conveyors for transferring said wood particles through said first and second conveyors in sequence on their way from said feed silo to said impregnating stage for causing an elastic compressing deformation of the wood particles in said two or more conveyors and subsequently relaxing the elastic deformation when releasing the wood particles into the impregnating stage.