Chemical efficiency increase in papermaking process
AssigneeSolenis Technologies, L.P.
InventorsJohn C. Harrington, Mingxiang Luo, Davit E. Sharoyan, Sujan Singh
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Abstract
A method of increasing chemical efficiency of chemical additives in a papermaking system includes 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 laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein. The organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.
Claims20
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 laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein;
- wherein the organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.
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 laccase enzyme and at least one inorganic coagulant to the thick stock pulp to reduce the amount of soluble lignin therein.
Dependencies are inferred from the claim text.