Arrangement and system for a treatment process
AssigneeValmet Corporation
InventorsFrancois LAMBERT, Robert WAHLBERG, Patrik PETTERSSON
Life of this patent
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Abstract
A system for feeding lignocellulosic biomass material, comprising a pre-compressing stage for receiving biomass material and pre-compressing the material at a first pressure and a first compression ratio. A plug screw feeder receives the pre-compressed material and feeds the material against a second pressure and a second compression ratio, wherein the plug screw feeder includes a variable speed plug screw arranged in the plug screw feeder connected to a variable speed plug screw power source.
Claims14
A system for feeding lignocellulosic biomass material, comprising:
- a pre-compressing stage for receiving biomass material and pre-compressing the material at a first pressure and a first compression ratio;
- a plug screw feeder for receiving the pre-compressed material and feeding the material against a second pressure and a second compression ratio, said plug screw feeder including a variable speed plug screw arranged in the plug screw feeder connected to a variable speed plug screw power source;
- and
- wherein the first compression ratio in the pre-compression stage is between >1 and <2 and the second compression ratio in the plug screw feeder is between 1-5.
A method for feeding lignocellulosic biomass material, comprising:
- pre-compressing biomass material at a first pressure and a first compression ratio in a pre-compression stage;
- applying a second pressure on receiving the pre-compressed material and feeding the material against a second pressure and a second compression ratio in a second pressure applying stage, and
- wherein the first compression ratio in the pre-compression stage is between >1 and <2 and the second compression ratio in lower the plug screw feeder is between 1-5.
Dependencies are inferred from the claim text.