Method for oxygen delignification of cellulose pulp by...

D - Textiles – Paper – 21 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

D21C 9/147 (2006.01)

Patent

CA 2559362

The invention relates to a method for the improved oxygen delignification of cellulose pulp with a medium consistency of 8-16 %. The fraction of dissolved oxygen can be maintained at a high level throughout the process by the use of high pressure, greater than 15.0 bar, and by repeated agitative mixing while maintaining the high pressure, such that as large a fraction as just over 20% of the total oxygen added is dissolved in the fluid phase, and such that the amount of oxygen in the fluid phase is maintained at a high level throughout the complete high pressure section. This means that the amount of oxygen that is dissolved in the fluid phase and that penetrates the cellulose fibres can be maintained at an optimal high level throughout the process for improved delignification of the cellulose.

L'invention concerne un procédé permettant d'améliorer la délignification à l'oxygène de la pâte à papier avec une uniformité du support de 8-16 %. La fraction d'oxygène dissous peut être maintenue à un niveau élevé tout au long du processus par l'utilisation de haute pression supérieure à 15,0 bar accompagnée d'un brassage répété de sorte qu'une fraction élevée légèrement supérieure à 20 % de l'oxygène total ajouté est dissoute dans la phase liquide, et que la quantité d'oxygène dans la phase liquide est maintenue à un niveau élevé dans la totalité de la partie haute pression. En d'autres termes, la quantité d'oxygène qui est dissoute dans la phase liquide et qui pénètre dans les fibres de cellulose peut être maintenue à un niveau élevé optimal tout au long du processus en vue d'une délignification améliorée du cellulose.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for oxygen delignification of cellulose pulp by... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for oxygen delignification of cellulose pulp by..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for oxygen delignification of cellulose pulp by... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2028786

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.