Refiner plates having steam channels and method for extracting backflow steam from a disk refiner
First Claim
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1. A refining plate for refining lignocellulosic material, the plate comprising:
- a radially outer peripheral edge and a substrate surface;
a refining zone including a plurality of at least partially radially disposed bars and grooves between the bars, wherein the bars protrude upward from the substrate surface and the grooves each have a groove width, anda steam channel traversing the bars and grooves of the refining zone, wherein the steam channel has a radially outer end inward of the outer peripheral edge of the plate and has a width substantially greater than the groove width, and the steam channel is uninterrupted by the bars for at least one half of the radial length or arc width of the refining zone.
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Abstract
A refining plate for refining lignocellulosic material including: a radially outer peripheral edge and a substrate surface; a refining zone having a plurality of substantially radially disposed bars and grooves between the bars, wherein the bars protrude upward from the substrate surface and the grooves each have a groove width, and a steam channel traversing the bars and grooves of the refining zone, wherein the steam channel has a radially outer end radially inward of the outer peripheral edge of the plate and the steam channel has a width substantially greater than the groove width.
14 Citations
23 Claims
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1. A refining plate for refining lignocellulosic material, the plate comprising:
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a radially outer peripheral edge and a substrate surface; a refining zone including a plurality of at least partially radially disposed bars and grooves between the bars, wherein the bars protrude upward from the substrate surface and the grooves each have a groove width, and a steam channel traversing the bars and grooves of the refining zone, wherein the steam channel has a radially outer end inward of the outer peripheral edge of the plate and has a width substantially greater than the groove width, and the steam channel is uninterrupted by the bars for at least one half of the radial length or arc width of the refining zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A refining plate for refining lignocellulosic material, the plate comprising:
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a radially outer peripheral edge and a substrate surface; a refining zone including a plurality of substantially radially disposed bars and grooves between the bars, wherein the bars protrude upward from the substrate surface and the grooves each have a groove width, and a steam channel traversing the refining zone, wherein the steam channel has a radially outer end radially inward of the outer peripheral edge of the plate and the steam channel has a width substantially greater than the groove width, and the steam channel is uninterrupted by the bars for at least one half of the radial length or arc width of the refining zone. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification