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Refiner plates having steam channels and method for extracting backflow steam from a disk refiner

  • US 8,573,521 B2
  • Filed: 10/03/2011
  • Issued: 11/05/2013
  • Est. Priority Date: 05/31/2007
  • Status: Active Grant
First Claim
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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.

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