Container with discharging device

1. A container for collecting and discharging particulate lignocellulosic material comprising a substantially cylindrical upper portion having a first cross-section, a lower portion tapering from said substantially cylindrical upper portion to a bottom defining an elongated space, an exit pipe disposed below said bottom of said container, said exit pipe having a second cross-section and disposed substantially centrally below said elongated space, said second cross-section being less than said first cross-section, a pair of parallel screws mounted on a pair of parallel shafts disposed in said elongated space in a common horizontal plane, said pair of parallel screws being adapted to feed said particulate lignocellulosic material towards said exit pipe, a pair of distributors for said particulate lignocellulosic material disposed on said respective pair of parallel screws at a location above said exit pipe, said pair of distributors comprising a pair of substantially radial discs, and a pump disposed below said exit pipe for transporting said particulate lignocellulosic material to a subsequent step.

2. The container of claim 1 wherein said screws comprise threads including flanks having an upper portion adapted for conveying said particulate lignocellulosic material, said bottom defining said elongated space having a configuration including a raised portion defining an upper edge, said upper portion of said thread flanks being disposed above said upper edge of said elongated space.

3. The container of claim 2 wherein said pair of parallel shafts includes a central axis disposed substantially at said upper edge of said elongated space.

4. The container of claim 2 wherein said threads include intermediate spaces between said threads which increase in the direction towards said exit pipe.

5. The container of claim 4 wherein said threads have an increasing pitch in said direction towards said exit pipe.

6. The container of claim 4 wherein said pair of parallel shafts includes a diameter which decreases in said direction towards said exit pipe.

7. The container of claim 2 wherein said substantially radial discs have a disc diameter and said screw threads have a thread diameter, said disc diameter being substantially the same as said thread diameter.

8. The container of claim 7 wherein said substantially radial discs have a center and a thickness which decreases outwardly from said center.

9. The container of claim 1 including entry means for addition of a treatment medium into said elongated space.