Method and arrangement for oxygen delignification of cellulose pulp
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 2, 2007
Grant Date -
Mar 24, 2005
app pub date -
Sep 13, 2004
filing date -
Sep 24, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method and arrangement for alkaline oxygen delignification of cellulose pulp. By adding alkali in the final phase of the oxygen delignification one can ensure that an optimal predetermined end-pH is obtained. This provides advantages in the subsequent bleaching since the bleachability is substantially improved in the form of reduced need for bleaching chemicals.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully