| 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 |
| 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 |
| 6277240 |
Method for continuously pulping cellulosic fibrous material |
August 21, 2001 |
| In the production of chemical pulp, such as kraft pulp, it is possible to reduce the amount of ancillary equipment, and/or the size of the continuous digester vessel, while achieving enhanced uniformity of treatment by avoiding "hang ups". Instead of providing vertical counter-curren |
| 6120647 |
Simplified liquid removal system for a cellulose pulp digester |
September 19, 2000 |
| A vertical pulp treatment vessel having a top and bottom, such as a continuous or batch digester, has at least a first substantially annular screen assembly disposed within the vessel between the top and bottom. A first substantially annular header is associated with the first screen |
| 5458738 |
Clarifying suspended solids from liquid process streams |
October 17, 1995 |
| Liquid process streams--such as white water, pressate, or washer filtrate from a pulp and paper mill--are clarified in an efficient manner using a gas sparged hydrocyclone, which takes up a minimum of floor space. A liquid stream having a consistency of less than about 0.5% solids is |
