KAPPA NUMBER

Pulp Kappa Number Kappa Crossword Puzzles Value Pack Kappa Crossword Puzzle Subscriptions Kappa Crossword Puzzle Books Kappa Kappa Gamma Legacy Form All Number Finds Puzzle Books Phi Theta Kappa Ranger College Free Cross Patch Puzzles




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| Kappa_number | Kappas | Kappa_Kappa_Psi | Ineffable_cardinal | Greek_letters_used_in_mathematics,_science,_and_engineering | Kappa_(folklore) | Condition_number | Kappa_Sigma | Kappa-casein | Pi_Kappa_Phi | Phi_Kappa_Psi | Kraft_process | Phi_Kappa_Phi | Anthraquinone | Kappa_Publishing_Group | Potassium_permanganate | Dimensionless_number | Kappa_Kappa_Gamma |



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Kappa number


The Kappa number is an indication of the residual lignin content or bleachability of wood pulp by a standardised analysis method.


Kappa number Measuring method


The Kappa number is determined by ISO 302:2004.hemicelluloses.

The Kappa number can be monitored by online Kappa analysers in a pulp mill, but these have to be calibrated with the ISO 302:2004 method.


Kappa number Application


The Kappa number estimates the amount of chemicals required during bleaching of wood pulp to obtain a pulp with a given degree of whiteness. Since the amount of bleach needed is related to the lignin content of the pulp, the Kappa number can be used to monitor the effectiveness of the lignin-extraction phase of the pulping process. It is approximately proportional to the residual lignin content of the pulp.

K ≈ c*l

K: Kappa number; c: constant ≈ 6,57 (dependent on process and wood); l: lignin content in percent

The Kappa number for bleachable pulps are in the range of 25-30, sack paper pulps in the range 45-55 and pulps for corrugated fiberboard are in the range 60-90.


Kappa number References



Kappa number External links




Pulp Kappa Number Kappa Crossword Puzzles Value Pack Kappa Crossword Puzzle Subscriptions Kappa Crossword Puzzle Books Kappa Kappa Gamma Legacy Form All Number Finds Puzzle Books Phi Theta Kappa Ranger College Free Cross Patch Puzzles

| Pulp Kappa Number | Kappa Crossword Puzzles Value Pack | Kappa Crossword Puzzle Subscriptions | Kappa Crossword Puzzle Books | Kappa Kappa Gamma Legacy Form | All Number Finds Puzzle Books | Phi Theta Kappa Ranger College | Free Cross Patch Puzzles | Kappa_number | Kappas | Kappa_Kappa_Psi | Ineffable_cardinal | Greek_letters_used_in_mathematics,_science,_and_engineering | Kappa_(folklore) | Condition_number | Kappa_Sigma | Kappa-casein | Pi_Kappa_Phi | Phi_Kappa_Psi | Kraft_process | Phi_Kappa_Phi | Anthraquinone | Kappa_Publishing_Group | Potassium_permanganate | Dimensionless_number | Kappa_Kappa_Gamma

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Dieser Artikel basiert auf dem Artikel http://en.wikipedia.org/wiki/Kappa_number aus der freien Enzyklopaedie http://en.wikipedia.org bzw. http://www.wikipedia.org und steht unter der Doppellizenz GNU-Lizenz fuer freie Dokumentation und Creative Commons CC-BY-SA 3.0 Unported. In der Wikipedia ist eine Liste der Autoren unter http://en.wikipedia.org/w/index.php?title=Kappa_number&action=history verfuegbar. Alle Angaben ohne Gewähr.

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