[특허]Methods for inhibiting the deposition of organic contaminates in pulp and papermaking systems

Methods for inhibiting the deposition of organic contaminates in pulp and papermaking systems 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C09D-197/00 D21C-009/08 D21H-021/04 C09D-171/02
출원번호	US-0192188 (2016-06-24)
등록번호	US-10253214 (2019-04-09)
발명자 / 주소	Ling, Tien-Feng Liu, Zhaoqing Bottorff, Kyle J
출원인 / 주소	SOLENIS TECHNOLOGIES, L.P.
대리인 / 주소	Lorenz & Kopf, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 74

초록 ▼

The current method relates to compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems. The current method also relates to controlling the deposition of organic contaminants on equipment in the pulp and papermaking systems, which can cause both quality and efficiency problems. In particular the method relates to the use of non-sulfonated or slightly sulfonated lignin dispersions and solutions for inhibiting deposition of contaminants in pulp and paper making system.

대표청구항 ▼

1. A method of preventing and/or inhibiting the deposition of organic contaminants on surfaces in pulp and papermaking systems comprising: adding to the pulp and papermaking system a composition comprising one or more nonsulfonated lignins, and one or more non-ionic hydrophobically modified water-soluble polymers chosen from modified hydroxyethylcellulose, modified water-soluble methyl cellulose, and polyvinyl alcohol having from about 50% to about 99% hydrolysis, or combinations thereof, wherein the non-sulfonated lignins and the non-ionic hydrophobically modified water-soluble polymers are present in a weight ratio of from about 1:4 to about 4:1. 2. The method of claim 1, wherein the composition further comprises sulfonated lignins having a degree of sulfonation of less than 3.5 moles of sulfur per kilogram of lignin. 3. The method according to claim 1, wherein the non-sulfonated lignins are present as a dispersion and the dispersion comprises lignin particles having an average particle size of about 105 nm. 4. The composition according to claim 1, further comprising one or more anionic polymers selected from the group consisting of copolymer of DADMAC and acrylic acid salts, polymer with (chloromethyl) oxirane, polyacrylates, diisobutylene-hydrolyzed maleic anhydride copolymers, ethyl vinyl ether/maleic anhydride copolymers, polyacrylamides, polymethylmethacrylate and combinations thereof. 5. The method according to claim 1, further comprising one or more cationically charged compounds selected from the group consisting of cationic surfactants, cationic polymers, and polyvalent metal ions. 6. The method according claim 1, wherein the amount of composition added to the pulp and papermaking system is from about 0.005% to about 5.0% based on dry weight pulp. 7. The method according to claim 1, wherein the amount of composition added to the pulp and papermaking system is from about 0.01% to about 1.0% based on dry weight pulp. 8. A method of preventing and/or inhibiting the deposition of contaminants on the surfaces of pulp and papermaking systems comprising spraying on the surfaces a composition comprising one or more non-sulfonated lignins and one or more non-ionic hydrophobically modified water-soluble polymers chosen from modified hydroxyethylcellulose, modified water water-soluble methyl cellulose, and polyvinyl alcohol having from about 50% to about 99% hydrolysis or combinations thereof, wherein the non-sulfonated lignin and the non-ionic hydrophobically modified water-soluble polymers are present in the composition in a weight ratio of from about 1:4 to about 4:1. 9. The method according to claim 8, wherein the composition further comprises sulfonated lignins having a degree of sulfonation of less than 3.5 moles of sulfur per kilogram of lignin. 10. The method according to claim 8, wherein the non-sulfonated lignins are present as a dispersion and the lignin dispersion comprises lignin particles having an average particle size of about 105 nm. 11. The method according to claim 8, wherein the composition further comprises one or more cationically charged compounds selected from the group consisting of cationic surfactants, cationic polymers, and polyvalent metal ions. 12. The method according to claim 8, wherein the composition is sprayed onto the surfaces of pulp and papermaking machinery and equipment in an amount ranging from about 0.005% to about 5.0% based on dry weight pulp. 13. A method of preventing and/or inhibiting the deposition of organic contaminants on surfaces in pulp and papermaking systems comprising: adding to the pulp and papermaking system a composition comprising a first lignin having a degree of aromatic sulfonation of about 0.3 mols/kg and a second lignin having a degree of aromatic sulfonation of from about 0.8 to about 1.8 mols of sulfur/kg,wherein the first lignin and the second lignin are present in a weight ratio of from about 1:3 to about 3:1. 14. The method of claim 13 that produces a detackification percentage of greater than about 70% when utilizing a treatment concentration of about 2 ppm of the first and second lignins and produces a percent force reduction of greater than about 60% when utilizing a treatment concentration of about 2 ppm of the first and second lignins. 15. The method of claim 13 wherein the first lignin and the second lignin are present in a weight ratio of from about 1:3 to about 1:1. 16. The method of claim 13 wherein the first lignin and the second lignin are present in a weight ratio of from about 1:1 to about 3:1. 17. The method according to claim 1, wherein the non-sulfonated lignin and the non-ionic hydrophobically modified water-soluble polymers are present in a weight ratio of about 1:1. 18. The method according to claim 1, wherein the non-sulfonated lignin and the non-ionic hydrophobically modified water-soluble polymers are present in a weight ratio of from about 1:4 to about 1:1. 19. The method according to claim 1, wherein the non-sulfonated lignin and the non-ionic hydrophobically modified water-soluble polymers are present in a weight ratio of from about 1:1 to about 4:1. 20. The method according to claim 1 that produces a detackification percentage of from about 62% to about 100% when utilizing a treatment concentration of about 2 ppm of the non-sulfonated lignin and the non-ionic hydrophobically modified water-soluble polymers.

이 특허에 인용된 특허 (74)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Methods for inhibiting the deposition of organic contaminates in pulp and papermaking systems 원문보기

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Methods for inhibiting the deposition of organic contaminates in pulp and papermaking systems 원문보기

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