ADVANCED TMP-Enhancing Fiber Development at Reduced Energy Consumption

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Other Title
  • 最新ADVANCED TMP―低エネルギー消費の高品質機械パルプ製造技術
  • サイシン ADVANCED TMP : テイエネルギー ショウヒ ノ コウヒンシツ キカイ パルプ セイゾウ ギジュツ

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Abstract

A method for producing well-bonded thermomechanical pulps, herein named ATMP, from several softwood species at significantly reduced energy consumption is presented using a combination of TMP sub-processes and targeted chemical treatments. The ATMP technology consists of unit operations formulated to better separate the defibration and fibrillation steps with the goal of improved pulp fiber bonding at the lowest possible energy consumption ; targeted chemical treatment is an important subcomponent for maximizing the efficiency of this process. The sub-process of chemical treatment is presented from a series of pilot studies evaluating ; i) sodium bisulfite treatment, ii) location of chemical application, iii) sodium bisulfite charge and iv) type of chemical agent applied. The impact of bisulfite pretreatment on alkaline peroxide bleaching is also presented. The results confirm that bisulfite is an effective chemical agent for enhancing the ATMP process, and its performance is optimized by both, the location of chemical treatment and charge on O. D. fiber.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 66 (10), 1064-1074, 2012

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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