| Patent Number |
Title Of Patent |
Date Issued |
| 7455749 |
Gas phase continuous digester having an inverted top separator with liquor injection |
November 25, 2008 |
| A method for adding cooking liquor into a vapor phase continuous digester for producing chemical cellulose pulp from cellulose chips including: introducing a slurry of the cellulose chips from a feed system to an inverted top separator in a top vapor phase section of the digester; di |
| 7309401 |
Top separator for gas phase and hydraulic phase continuous digesters and method for converting d |
December 18, 2007 |
| A continuous digester for producing chemical cellulose pulp from cellulose chips including: a digester vessel with an upper section attached to a top separator and said vessel at least partially filled with the cellulose chips and a liquor; a top separator at least partially in said |
| 7105076 |
Gas phase continuous digester having an inverted top separator with liquor injection |
September 12, 2006 |
| A continuous digester is disclosed for producing chemical cellulose pulp from cellulose chips, comprising: a continuous digester vessel having a lower section filled with the cellulose chips and an upper gas filled section; an inverted separator at least partially in said upper section |
| 6673201 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
January 6, 2004 |
| A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of sai |
| 6641336 |
High pressure feeder rotor having conduits for pressure equalization |
November 4, 2003 |
| A conduit extends laterally through a rotor of a high pressure feeder to relieve any unequal pressures acting on opposite ends of the rotor. The conduit allows slurry under extraordinarily high pressure at one end of the rotor, to flow laterally through the rotor, and be released through |
| 6589391 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
July 8, 2003 |
| A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of sai |
| 6582554 |
Continuous digester having a sectioned top separator with multiple liquor extraction ports |
June 24, 2003 |
| A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from the separator; extracting a s |
| 5690341 |
Method and apparatus for the facilitating the servicing of drive-shaft assemblies for pressurize |
November 25, 1997 |
| Apparatus and a method allow shaft packings and bearing assemblies to be serviced for a shaft penetrating a pressurized vessel without requiring the vessel to be emptied. |
