Reactor vessel for biomass material

Patent metadata

Field	Value
Publication number	US-12005418-B2
Application number	US-201917049196-A
Country	US
Kind code	B2
Filing date	Mar 29, 2019
Priority date	Apr 25, 2018
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A reactor vessel (1) for biomass material, wherein said reactor vessel (1) is a pressurized reactor vessel, said reactor vessel being elongated and comprising: a substantially tubular vessel part (3); two gables (5a, 5b) connected one to each end (19a, 19b) of the tubular vessel part (3), hereby enclosing a vessel internal compartment (7); and a material transporting screw (8) comprising a central shaft (9) provided within the vessel internal compartment (7) extending between the two gables (5a, 5b) along a central axis (A) of the reactor vessel (1), wherein said material transporting screw further comprises screw flight (11) provided around the shaft (9), wherein said material transporting screw is configured for transporting the biomass material through the reactor vessel, wherein both gables (5a, 5b) are inwardly dished.

First claim

The invention claimed is:

1. An elongated pressurized reactor vessel for biomass material, the elongated pressurized reactor vessel comprising:
a substantially tubular vessel part comprising:
a first end, and
a second end;

a first gable connected to the first end, the first gable being inwardly dished;
a second gable connected to the second end, the second gable cooperating with the substantially tubular vessel part and the first gable to enclose a vessel internal compartment, the second gable being inwardly dished;
a material transporting screw configured for transporting the biomass material through the elongated pressurized reactor vessel, the material transporting screw comprising:
a central shaft provided within the vessel internal compartment, extending between the first gable and the second gable along a central axis, and protruding out of the vessel internal compartment through at least one of the first gable or the second gable, the central shaft being configured to be connected to a rotation device that is configured to rotate the central shaft around its longitudinal axis, and
a screw flight provided around the central shaft;

a first bearing mounted on the first gable and supporting the central shaft, the first bearing facilitating rotation of the central shaft around its longitudinal axis; and
a second bearing mounted on the second gable and supporting the central shaft, the second bearing facilitating rotation of the central shaft around its longitudinal axis.

2. The elongated pressurized reactor vessel of claim 1 , further comprising:
an inlet for receiving the biomass material into the vessel internal compartment, the inlet being located at a first position, which is closer to the first end than the second end; and
an outlet for discharging the biomass material out from the vessel internal compartment after having passed through the vessel internal compartment, the outlet being located at a second position which is closer to the second end than the first end.

3. The elongated pressurized reactor vessel of claim 2 , wherein the first position is provided at a first distance from the first end and the second position is provided at a second distance from the second end.

4. The elongated pressurized reactor vessel of claim 3 , wherein the first distance and the second distance are at least 1/20 of a total length of the elongated pressurized reactor vessel.

5. The elongated pressurized reactor vessel of claim 1 , wherein a pressure within the vessel internal compartment is 5-50 bar (g).

6. The elongated pressurized reactor vessel of claim 1 , wherein the elongated pressurized reactor vessel is horizontally provided.

7. The elongated pressurized reactor vessel of claim 1 , wherein the elongated pressurized reactor vessel is substantially cylindrical and at least 1 m in diameter and at least 6 m in length.

8. The elongated pressurized reactor vessel of claim 1 , wherein a shape of each of the first gable and the second gable is hemispherical, elliptical, or spherical.

9. The elongated pressurized reactor vessel of claim 1 , wherein:
a first top point of the first gable is located between an inlet centerline and the first end, the inlet centerline passing through a center of an inlet of the elongated pressurized reactor vessel and being perpendicular to the central axis; and
a second top point of the second gable is located between an outlet centerline and the second end, the outlet centerline passing through a center of an outlet of the elongated pressurized reactor vessel and being perpendicular to the central axis.

10. The elongated pressurized reactor vessel of claim 9 , wherein a first distance between the first top point and the first end and a second distance between the second top point and the second end are equal to at least ⅓ of a radius of the elongated pressurized reactor vessel.

11. The elongated pressurized reactor vessel of claim 1 , further comprising:
an inlet for receiving the biomass material into the vessel internal compartment, the inlet being located at a first position, which is closer to the first end than the second end; and
an outlet for discharging the biomass material out from the vessel internal compartment after having passed through the vessel internal compartment, the outlet being located at a second position which is closer to the second end than the first end;
wherein the first position is provided at a first distance from the first end and the second position is provided at a second distance from the second end;
wherein the first distance and the second distances are at least 1/20 of a total length of the elongated pressurized reactor vessel; and
wherein the elongated pressurized reactor vessel is substantially cylindrical and at least 1 m in diameter and at least 6 m in length.

12. The elongated pressurized reactor vessel of claim 1 , further comprising:
an inlet for receiving the biomass material into the vessel internal compartment, the inlet being located at a first position, which is closer to the first end than the second end; and
an outlet for discharging the biomass material out from the vessel internal compartment after having passed through the vessel internal compartment, the outlet being located at a second position which is closer to the second end than the first end;
wherein the first position is provided at a first distance from the first end and the second position is provided at a second distance from the second end;
wherein the first distance and the second distances are at least 1/20 of a total length of the elongated pressurized reactor vessel;
wherein a first top point of the first gable is located between an inlet centerline and the first end, the inlet centerline passing through a center of the inlet and being perpendicular to the central axis; and
wherein a second top point of the second gable is located between an outlet centerline and the second end, the outlet centerline passing through a center of the outlet and being perpendicular to the central axis.

13. The elongated pressurized reactor vessel of claim 12 , wherein a third distance between the first top point and the first end and a fourth distance between the second top point and the second end are equal to at least ⅓ of a radius of the elongated pressurized reactor vessel.

14. The elongated pressurized reactor vessel of claim 13 , wherein a pressure within the vessel internal compartment is 5-50 bar (g).

15. The elongated pressurized reactor vessel of claim 14 , wherein the elongated pressurized reactor vessel is substantially cylindrical.

16. The elongated pressurized reactor vessel of claim 15 , wherein the elongated pressurized reactor vessel is at least 1 m in diameter.

17. The elongated pressurized reactor vessel of claim 15 , wherein the elongated pressurized reactor vessel is at least 6 m in length.

18. The elongated pressurized reactor vessel of claim 13 , wherein the elongated pressurized reactor vessel is substantially cylindrical.

19. The elongated pressurized reactor vessel of claim 1 , wherein a shape of each of the first gable and the second gable is elliptical.

20. The elongated pressurized reactor vessel of claim 1 , wherein a shape of each of the first gable and the second gable is spherical.

Assignees

• Valmet Oy

Inventors

• Mellander Stefan
• Carlsson Johan
• Fredriksson Lars
• Lambert Francois

Classifications

• D21C7/08

  Discharge devices · CPC title

• D21C7/06

  Feeding devices · CPC title

• D21C1/04

  with acid reacting compounds · CPC title

• D21C1/02

  with water or steam · CPC title

• B01J2219/1943

  cylindrical · CPC title