CPC D21H 17/455 (2013.01) [D21H 11/04 (2013.01); D21H 11/08 (2013.01)] | 9 Claims |
1. A method of increasing chemical efficiency of chemical additives in a papermaking system, said method comprising the steps of:
providing thick stock pulp comprising soluble lignin, process water, and at least about 2% by weight of cellulosic fiber based on total weight of thick stock pulp, and
adding at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein; and
wherein the organic polymer is chosen from water dispersions of cationic polyacrylamides, water dispersions of polyethylene oxides, and combinations thereof,
wherein the cationic polyacrylamide has a molecular weight of from about 1,000,000 to about 10,000,000 Da,
wherein the polyethylene oxide has a molecular weight of greater than about 1,000,000 and less than about 10 million Da, and
wherein the organic polymer is added to the thick stock pulp in an amount of from about 0.05 to about 5 pounds per ton of oven dried pulp.
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