Method of improving paper machine forming wire, felt and woven dryer belt performance by the application of peroxide containing solutions
Embodiments are directed to methods for inhibiting contaminants formation during papermaking operation. The method includes preparing an aqueous solution having a pH greater than 7.0 and comprising peroxide; and applying the aqueous solution onto or within one or more of forming wires, press felts and woven through air drying (TAD) belts prior to contacting and transporting a wet paper web to inhibit the formation of wet paper web contaminants onto the surfaces of or within the forming wires, press felts and woven TAD belts.
1. A method for inhibiting contaminants formation during papermaking operation, the method comprising:
preparing an aqueous solution having a pH greater than 7.0 and comprising peroxide; and
applying the aqueous solution onto or within one or more of forming wires, press felts and woven through air drying (TAD) belts prior to contacting and transporting a wet paper web to inhibit the formation of wet paper web contaminants onto the surfaces of or within the forming wires, press felts and woven TAD belts,
wherein the wet paper web contaminants comprise hydrogels having one or more of wet strength resins, dry strength resins, starch, starch derivatives, polyaminoamido epichlorohydrin adducts and reaction products, glyoxylated polyacrylamides and cationic papermaking polymers.
2. The method of claim 1 wherein the aqueous solution comprises peroxide, wet strength additive, and base.
3. The method of claim 2 wherein the base comprises at least one alkali metal hydroxide.
4. The method of claim 1 wherein the peroxide is hydrogen peroxide.
5. The method of claim 4 wherein the aqueous solution comprises the hydrogen peroxide in an amount from about 1% to about 15% by weight.
6. The method of claim 1 wherein the pH of the aqueous solution ranges from about 7.1 to about 13.5.
7. The method of claim 1 wherein the aqueous solution further comprises adjuvants selected from surfactants, peroxide stabilizers, peroxide activators, acids, or combinations thereof.
8. The method of claim 7 wherein the surfactant is selected from a group consisting of nonionic surfactants, anionic surfactants, cationic surfactants and zwitterionic surfactants.
9. The method of claim 1 wherein the aqueous solution comprises one or more solvents selected from the group consisting of glycol ether solvents, paraffinic solvents, naphthenic solvents, terpene solvents, alkyl alcohols, and aryl alcohols.
10. The method of claim 9 wherein the aqueous solution comprises solvent in an amount from about 6% to about 18% by weight.
11. The method of claim 1 wherein the aqueous solution is applied to the press felts at a temperature from about 5° C. to about 350° C.
12. The method of claim 1 wherein the aqueous solution has a dynamic surface tension of about 25 to about 40 dynes/cm.
13. The method of claim 1 wherein the aqueous solution is applied in an amount of about 100 ppm to about 50,000 ppm.