Refiner plates having steam channels and method for extracting backflow steam from a disk refiner
First Claim
Patent Images
1. A method to extract high pressure steam from a refining system comprising:
- introducing a cellulose fibrous feed material to an inlet of a disk refiner;
feeding the cellulose fibrous feed material between opposing disks of the refiner, wherein one disk rotates relative to the other;
refining the cellulose fibrous feed material between opposing refiner plates each mounted on a respective one of the opposing disks, wherein each refiner plate has a zone of refining bars and grooves;
back flowing steam generated during the refining of the feed material through steam channels in at least one of the plates, wherein the steam channels have a width substantially greater than a width of the grooves, andextracting the back flow steam from the disk refiner from a steam outlet radially inward of an outlet of the channels.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
7 Claims
-
1. A method to extract high pressure steam from a refining system comprising:
-
introducing a cellulose fibrous feed material to an inlet of a disk refiner; feeding the cellulose fibrous feed material between opposing disks of the refiner, wherein one disk rotates relative to the other; refining the cellulose fibrous feed material between opposing refiner plates each mounted on a respective one of the opposing disks, wherein each refiner plate has a zone of refining bars and grooves; back flowing steam generated during the refining of the feed material through steam channels in at least one of the plates, wherein the steam channels have a width substantially greater than a width of the grooves, and extracting the back flow steam from the disk refiner from a steam outlet radially inward of an outlet of the channels. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method to extract high pressure steam from a refining system comprising:
-
introducing a cellulose fibrous feed material to an inlet of a disk refiner; feeding the cellulose fibrous feed material between opposing disks of the refiner, wherein one disk rotates relative to the other; refining the cellulose fibrous feed material between opposing refiner plates each mounted on a respective one of the opposing disks, wherein each refiner plate has a zone of refining bars and grooves; channeling steam generated during the refining of the feed material through a steam channel in at least one of the plates, wherein the steam channel has a width greater than a width of any of the grooves and crosses through a plurality of the grooves at an oblique angle to the grooves, and extracting the steam being channeled from a radially inward outlet of the channel and into a steam outlet in the refiner which is radially inward of the zone of refining bars and grooves.
-
Specification