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US 10,675,661 B2Granted
Systems and methods for use in processing of forest residue
AssigneeBiofuels Technology LLC
InventorAndrew Laitt
Life of this patent
Estimating the term…
Abstract
This disclosure includes systems and methods that may be used in forest residue processing. Some systems use or include: a filter configured to filter elements based on element size, a separator configured to separate elements based on element areal density, a separator configured to separate elements based on element density, and/or a sorter configured to sort elements based on element wood fiber content.
Claims20
A method for producing wood fiber from forest residue, the method comprising:
- filtering at least a portion of a forest residue feed into:
- a first large-elements feed having a first maximum element size;
- and
- a small-elements feed having a second maximum element size that is smaller than the first maximum element size;
- sorting at least a portion of the first large-elements feed into a first wood fiber-elements feed and a first bark-elements feed having a lower aggregate wood fiber content than that of the first wood fiber-elements feed;
- and
- size-reducing at least a portion of the first bark-elements feed to produce a reduced-size bark-elements feed;
- where the filtering comprises filtering at least a portion of the reduced-size bark-elements feed into the first large-elements feed and the small-elements feed.
5 more elements
A system for producing wood fiber from forest residue, the system comprising:
- a filter configured to receive at least a portion of a forest residue feed and filter the received portion into:
- a first large-elements feed having a first maximum element size;
- and
- a small-elements feed having a second maximum element size that is smaller than the first maximum element size;
- a first sorter configured to receive at least a portion of the first large-elements feed and sort the received portion into a first wood fiber-elements feed and a first bark-elements feed having a lower aggregate wood fiber content than that of the first wood fiber-elements feed;
- and
- a size-reducing machine configured to receive at least a portion of the first bark-elements feed and produce a reduced-size bark-elements feed;
- where the filter is configured to receive and filter at least a portion of the reduced-size bark-elements feed.
5 more elements
Dependencies are inferred from the claim text.