C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/14 (2006.01) C02F 5/12 (2006.01) D21C 3/22 (2006.01) D21C 9/00 (2006.01)
Patent
CA 2447559
Compositions and method of improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the black liquor composition recovered from the digester in a chemical pulping process. The compositions and method are especially well suited for use in the Kraft pulping process.
L'invention concerne des compositions et des méthodes pouvant inhiber de façon améliorée la formation de tartre de sel de calcium dans les conditions observées dans des processus de réduction en pâte chimique dans lesquels une quantité effective de phosphonates ou mélanges de phosphonates choisis est mélangée avec la composition de boue noire récupérée du digesteur dans un processus de réduction en pâte chimique. Les compositions et la méthode de l'invention conviennent particulièrement dans un processus de réduction en pâte kraft.
Loy Jeremy E.
Severtson Steven John
Thompson Jacob Owen
Verrett Sheldon Phillip
Mcfadden Fincham
Solutia Inc.
Thermphos Trading Gmbh
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