Development of Black Liquor Viscosity Control Chemical

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  • 黒液粘度低下剤の開発
  • コクエキ ネンド テイゲザイ ノ カイハツ

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Abstract

<p>In the craft pulp manufacturing process, 7-10 t the black liquor is generated for making 1 t of pulp. Generally, the black liquor is concentrated about 75％ under the hot vacuum in concentrating process and burned in recovery boiler for combustion energy with inorganic pulping chemicals. Higher concentrated black liquor is improved recovery efficiency for energy. However, over 75％ concentrated of the black liquor makes trouble for handling.</p><p>In this report describe the results of our research about the chemical reducing the viscosity（fluidity）of the black concentrated liquor. The viscosity of the 80％ concentrated black liquor which is treated by this chemical could be handle like 75％. New formulation chemical has founder to control viscosity of black liquor.</p>

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 73 (4), 297-300, 2019

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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