pH in DIP process is important control point that can be influence operation and quality of DIP. Therefore constant rate of chemical is dosed to maintain proper pH.
However circulation water recovery and reuse is common and DIP system is a good environment for bacteria growth. In fact, bacteria count at a DIP system was very high. Also, bacteria growth is confirmed in a process like a tower that requires long detention time, and pH is lowered due to generated organic acid. In such a condition, we confirmed that caustic soda is consumed and hydrogen peroxide is resolved unintentionally.
We have been introduced various slime control technology for paper making process. By applying monochloramine, one of those technologies, we considered DIP process optimization program and achieved not only pH improvement but also other problem solving and optimization at DIP process, and as a result, we managed total operational cost reduction and quality improvement. We would like to introduce one of those cases.
"},{"@language":"ja","@value":"DIP系内のpHは，操業状況とDIP品質に影響を与える重要な管理項目であり，適正なpHとするため，薬品を定率で添加し，管理している。
しかし，DIP工程で回収循環使用の高度化が進み，またDIP系内は，細菌が繁殖しやすい条件であり，実際，DIP系内の菌数は高く，ほぼ飽和状態であった。またタワーのような滞留時間の長い工程で細菌が増殖し，工程内で代謝物である有機酸が生成され，pH低下が起こっており，このような条件化で，苛性ソーダは消費，過酸化水素も無駄に分解してしまっていることが確認できた。
弊社ではスライムコントロール技術のひとつであるモノクロラミン処理を応用したDIP工程を最適化する新規プログラムを検討し，pHの向上，安定にあわせてDIP工程の脱墨効率と過酸化水素晒効率の改善，COD低減，ピッチ成分の系外除去などを改善し，トータルコスト削減と品質向上を達成することに成功した。
ファイバーホワイト処理（弊社処理名：ファイバーホワイト処理。FBW処理と略す。）は，DIPの前工程から薬剤を連続添加し，DIPはもとよりマシンまで全体の処理を行う新規プログラムである。
"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410572174063532032","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000397689788"}],"foaf:name":[{"@language":"ja","@value":"十河 功治"},{"@language":"en","@value":"Sogo Koji"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Industrial Technical Consultant, Pulp and Paper Business, KATAYAMA NALCO INC."},{"@language":"ja","@value":"片山ナルコ株式会社 WPS-PS 事業部"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0022815X"},{"@type":"EISSN","@value":"18811000"},{"@type":"CODEN","@value":"KAGIAU"},{"@type":"NDL_BIB_ID","@value":"000000004166"},{"@type":"ISSN","@value":"0022815X"},{"@type":"LISSN","@value":"0022815X"},{"@type":"NCID","@value":"AN00379952"}],"prism:publicationName":[{"@language":"en","@value":"JAPAN TAPPI JOURNAL"},{"@language":"ja","@value":"紙パ技協誌"},{"@language":"en","@value":"J. Tappi J."},{"@language":"ja","@value":"紙パ技協誌"},{"@language":"en","@value":"JAPAN TAPPI JOURNAL"}],"dc:publisher":[{"@language":"en","@value":"JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY"},{"@language":"ja","@value":"紙パルプ技術協会"}],"prism:publicationDate":"2018","prism:volume":"72","prism:number":"5","prism:startingPage":"490","prism:endingPage":"494"},"reviewed":"false","url":[{"@id":"http://id.ndl.go.jp/bib/029044774"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I029044774"},{"@id":"https://www.jstage.jst.go.jp/article/jtappij/72/5/72_72.490/_pdf"}],"availableAt":"2018","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=W%3Csub%3E13%3C/sub%3E%E3%82%B9%E3%83%A9%E3%82%A4%E3%83%A0%E3%82%B3%E3%83%B3%E3%83%88%E3%83%AD%E3%83%BC%E3%83%AB%E5%89%A4","dc:title":"W13スライムコントロール剤"},{"@id":"https://cir.nii.ac.jp/all?q=G%3Csub%3E0%3C/sub%3E%E3%81%9D%E3%81%AE%E4%BB%96%EF%BC%88%E5%8F%A4%E7%B4%99%E3%83%91%E3%83%AB%E3%83%97%E3%81%AE%E8%A3%BD%E9%80%A0%EF%BC%89","dc:title":"G0その他（古紙パルプの製造）"}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2004372253"},{"@type":"NDL_SEARCH","@value":"oai:ndlsearch.ndl.go.jp:R000000004-I029044774"},{"@type":"CROSSREF","@value":"10.2524/jtappij.72.490"},{"@type":"CIA","@value":"130007429935"}]}