Patent ID: 8573521
Filing Date: 2013-11-05
Classification: D21D

Abstract:
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.