지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 박종문.
- 발행연도
- 2013
- 저작권
- 충북대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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Flocculation is induced by electrostatic reaction of polyelectrolyte, so anionic trash, fines, and DCS(dissolved and colloidal substance) shrink polymers and consequently hinder retention performance, runnability, and quality of product.
In this work, non-ionic polyethylene oxide(PEO)/phenolic formaldehyde resin(PFR) retention system, less affected by furnish charge, was analyzed for possibility and effectiveness when using recycled stock.
PEO/PFR retention system has network structure which adsorbs on particles as PFR addition level increased in PEO/PFR retention system. Optimum ratio of PEO and PFR was 1:10 for proper retention and drainage. Performance of PEO/PFR system was increased when interval time of two components was shorten because network structure was formed by PEO and PFR through bridging mechanism.
When the fixing agent was applied in PEO/PFR retention system, ash retention was increased. When bentonite and micropolymer were added, performance of retention and drainage was improved.
Polyacrylamide(PAM)/bentonite system induced flocculation of white pitch by electrostatic flocculation. On the other hand, non-ionic PEO/PFR retention system induced less flocculation of white pitch than PAM/bentonite retention system.
As the calcium hardness and chemi-thermomechanical pulp(CTMP) ratio increased, PEO/PFR retention system was more efficient in retention and drainage than the other system because they had less effected by charge.
In this work, non-ionic polyethylene oxide(PEO)/phenolic formaldehyde resin(PFR) retention system, less affected by furnish charge, was analyzed for possibility and effectiveness when using recycled stock.
PEO/PFR retention system has network structure which adsorbs on particles as PFR addition level increased in PEO/PFR retention system. Optimum ratio of PEO and PFR was 1:10 for proper retention and drainage. Performance of PEO/PFR system was increased when interval time of two components was shorten because network structure was formed by PEO and PFR through bridging mechanism.
When the fixing agent was applied in PEO/PFR retention system, ash retention was increased. When bentonite and micropolymer were added, performance of retention and drainage was improved.
Polyacrylamide(PAM)/bentonite system induced flocculation of white pitch by electrostatic flocculation. On the other hand, non-ionic PEO/PFR retention system induced less flocculation of white pitch than PAM/bentonite retention system.
As the calcium hardness and chemi-thermomechanical pulp(CTMP) ratio increased, PEO/PFR retention system was more efficient in retention and drainage than the other system because they had less effected by charge.
목차
Ⅰ. 서론 1Ⅱ. 연구사 3Ⅲ. 재료 및 방법 93.1 공시 재료 93.1.1 지료 93.1.2 보류제 및 보류 향상 보조 첨가제 103.2 실험 방법 113.2.1 지료 조성 113.2.2 보류제 투입 123.2.3 보류, 탈수, 탁도 분석 19Ⅳ. 결과 및 고찰 224.1 PEO/PFR 보류시스템의 최적 조건 224.2 PEO/PFR 보류시스템과 기타 보류 향상 첨가제와의 상용성 264.3 PEO/PFR 보류시스템과 PAM/bentonite 보류시스템의 효율성 비교 35Ⅴ. 결론 44참고문헌 45
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