Mill Experiences with Single Point Kappa Analysers

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  • オンラインシングルポイントカッパー価計導入事例
  • オンラインシングルポイントカッパーカケイ ドウニュウ ジレイ

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Abstract

<p>Kappa value measurement is the most important & critical pulp quality parameter to determine the chemical addition rate in Pulp production process and can become the key to optimize the chemical cost.</p><p>Chuetsu Pulp & Paper Takaoka mill's old softwood kraft bleach plant due to the ageing was closed down and was replaced with a new bleach plant which started operations in December, 2015.　The new bleach plant is expected to provide better chemicals and energy efficiency while producing pulp that meets quality targets.</p><p>In Japan, it has been a standard practice to install traditional Multi-Point Kappa （MPK） analyzer to measure Kappa online. Typically, MPK analyzer has many sampling positions due to the update time is long （30 min to 1 hour）, which impacts response to process variability. In addition, poor accuracy, unexplainable measurement spikes and plugging of sample transport pipelines, makes this heavy investment unreliable. When we were dealing with the equipment selection of kappa analyzer for our new bleach plant, Single Point Kappa （SPK） analyzer was proposed by Spectris BTG. Understanding the measurement principle and the function of SPK and the expected benefits. Chuetsu team concluded that this novel technology for fiber kappa measurement does offer the possibility to overcome some of the unstable conditions and has a potential to reduce the chemical cost so a trial was performed in the existing plant.</p><p>This paper reports the outcome of SPK trial and the current situation until the installation from the trial.</p>

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 71 (3), 289-293, 2017

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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