D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 1/00 (2006.01)
Patent
CA 2390742
Processes and systems for the treatment of wood chips prior to cooking remove substantially (e.g., at least about 30%) water-soluble compounds therein, especially those compounds which disassociate in water to form potassium and/or chloride ions and/or water-soluble metal compounds such as manganese, calcium and potassium. In preferred embodiments, wood chips entering the cooking system containing water-soluble compounds, such as those compounds which disassociate in water to form potassium and/or chloride ions and/or water-soluble metal compounds such as manganese, calcium and potassium, may be treated prior to cooking by being brought into contact with an aqueous treatment stream (e.g., water or steam condensate) at a temperature (e.g., between about 20°C to about 120°C) and for a time (e.g., between about 2 to 200 minutes) so as to reduce substantially (e.g., at least about 30%) such water-soluble compounds.
Henricson Kaj O.
Stromberg C. Bertil
Andritz Inc.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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