Kraft Cooking with SAQ® Suitable for ECF Breaching

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2003Publisher:Japan Technical Association of the Pulp and Paper IndustryJournal:JAPAN TAPPI JOURNAL, volume 57, pages 781-787,019 (issn: 0022-815X, eissn: 1881-1000,

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Authors: Junji Tanaka;

doi: 10.2524/jtappij.57.781

Kraft Cooking with SAQ® Suitable for ECF Breaching

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Abstract

SAQ® has been used as a cooking additive in many KP mills. This process is known as “Quinone Cooking”. In this paper, some new applications of SAQ®'s functions are proposed when ECF bleaching process is introduced in pulp mills.First, the effect of SAQ®, which decreases bleaching load keeping pulp yield and strength by lowering Kappa number, is explained. Also. SAQ®'s advantage comparing with dispersed AQ is mentioned. especially when SAQ® is used combining with Polysulfide cooking. Finally, KKC's study plan about SAQ®' s applications to recent modified cooking processes is described.

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