US 12,214,522 B2
Arrangement for feeding wood particles into impregnating
Sami Turunen, Lappeenranta (FI); and Mika Laitila, Hämeenlinna (FI)
Assigned to UPM-KYMMENE CORPORATION, Helsinki (FI)
Appl. No. 17/426,254
Filed by UPM-KYMMENE CORPORATION, Helsinki (FI)
PCT Filed Jan. 29, 2019, PCT No. PCT/EP2019/052133
§ 371(c)(1), (2) Date Jul. 28, 2021,
PCT Pub. No. WO2020/156645, PCT Pub. Date Aug. 6, 2020.
Prior Publication US 2022/0134595 A1, May 5, 2022
Int. Cl. B27K 3/02 (2006.01); B27K 5/00 (2006.01)
CPC B27K 3/0207 (2013.01) [B27K 5/007 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An arrangement for processing wood particles, comprising:
a feed silo;
at least one impregnating vessel configured to subject 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 said wood particles from said feed silo to said at least one impregnating vessel; and
downstream from said impregnating stage in the process, 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 is configured to apply pressure to the wood particles on their way through the respective conveyor and comprises a respective conveyor input and a respective conveyor output, and wherein the conveyor inputs of said two or more conveyors are coupled to said feed silo in parallel for receiving a respective component stream of the wood particles from said feed silo 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.