US 11,655,588 B2
System and chip chute for feeding comminuted cellulosic material
Jonas Saetheråsen, Hammarö (SE); Jerk Söderman, Karlstad (SE); Robert Lavén, Karlstad (SE); and Bengt Wernersson Östberg, Skattkärr (SE)
Assigned to VALMET AB, Sundsvall (SE)
Appl. No. 16/615,957
Filed by VALMET AB, Sundsvall (SE)
PCT Filed Apr. 4, 2018, PCT No. PCT/SE2018/050355
§ 371(c)(1), (2) Date Nov. 22, 2019,
PCT Pub. No. WO2018/217149, PCT Pub. Date Nov. 29, 2018.
Claims priority of application No. 1750655-1 (SE), filed on May 24, 2017.
Prior Publication US 2020/0141056 A1, May 7, 2020
Int. Cl. D21C 7/06 (2006.01)
CPC D21C 7/06 (2013.01) 17 Claims
OG exemplary drawing
 
1. A feeding system for transporting comminuted lignocellulosic material to a pump having a circular inlet, said feeding system comprising:
a vessel;
a chip transfer arrangement arranged in, or at a bottom portion of, the vessel, the chip transfer arrangement comprising a rectangular outlet opening;
a chip chute arranged between the chip transfer arrangement and the pump,
wherein the chip chute comprises:
first, second, third, and fourth planar lateral walls defining an open area having a rectangular cross-section, with an inlet opening located at the outlet opening of the chip transfer arrangement, wherein the first and second planar lateral walls oppose each other and extend in a height (H) direction and a first length (L1) direction, and wherein the third and fourth planar lateral walls oppose each other and extend in the height (H) direction and a second length (L2) direction perpendicular to the first length (L1) direction,
a curved bottom wall that is located at a bottom of the planar lateral walls and curves from the first planar lateral wall to the second planar lateral wall, and
a cylindrical outlet tube protruding laterally from one of the planar lateral walls and configured to be connected to the circular inlet of the pump.
 
13. A feeding system for transporting comminuted lignocellulosic material to a pump having a circular inlet, said feeding system comprising:
a vessel;
a chip transfer arrangement arranged in, or at a bottom portion of, the vessel, the chip transfer arrangement comprising a rectangular outlet opening;
a chip chute arranged between the chip transfer arrangement and the pump,
wherein the chip chute comprises:
first, second, third, and fourth planar lateral walls defining an open area having a rectangular cross-section, with an inlet opening located at the outlet opening of the chip transfer arrangement, wherein the first and second planar lateral walls oppose each other and extend in a height (H) direction and a first length (L1) direction, and wherein the third and fourth planar lateral walls oppose each other and extend in the height (H) direction and a second length (L2) direction perpendicular to the first length (L1) direction,
a curved bottom wall that is located at a bottom of the planar lateral walls and curves from the first planar lateral wall to the second planar lateral wall, and
a cylindrical outlet tube protruding downward from the curved bottom wall and configured to be connected to the circular inlet of the pump.