Pulp

Analysis Package for Pulp

In pulp mills, it is of utmost importance to consider many different parameters to ensure both efficient operations and high quality of the produced pulp. One of the most crucial factors is the raw material used, namely wood.

Optimization of Pulp Production Through Analyses

The quality and composition of the wood directly impact the final product, and a consistent supply of high-quality wood is crucial to ensure stable and continuous production.

In addition to the raw material, the chemical environment in the production process is also of great importance. The chemical environment affects the fibers in the wood throughout the process, from cooking to bleaching and further to the formation of the finished pulp. Properly balanced chemicals and process parameters are essential to maintain fiber integrity and to avoid damage or quality issues in the final pulp.

Through careful monitoring and control of these parameters, pulp mills can ensure a consistent production of high-quality pulp, which is crucial to meet market demands and maintain a competitive operation. Therefore, continuous optimization and improvement of the process are of great importance to ensure efficiency, quality, and long-term sustainability in the pulp industry.

Maintaining control over pulp quality is essential for achieving good runnability and product quality. This is achieved through analyzing relevant pulp properties and fiber dimensions. RISE has packaged some analyses that provide a comprehensive overview of important properties.

Fiber Properties and Chemical Analyses

When it comes to fiber and pulp properties, the analyses include:

  • - Schopper-Riegler degree (SR) / Canadian Standard Freeness (CSF) (ISO 5267-1, -2)
  • - Water Retention Value (WRV) (ISO 23714)
  • - Fiber dimensions (length, width, shape, weight, fines, distribution, curl, kinks)
  • - Fiber content (microscopy)
  • - Fines content (Brit Jar) (SCAN CM 66:05)
  • - Sheet formation (Fineness test with or without drainage water) (ISO 5269)
  • - Basis weight (ISO 536): Basis weight is a measure of the pulp's density and can affect its strength and durability.
  • - Thickness, density/bulk (ISO 534)
  • - Tensile strength properties (ISO 1924-2, -3)
  • - Burst strength (ISO 2758)
  • - Tear strength (ISO 1974)
  • - Air permeability (ISO 5636-3)

Chemical analyses play a crucial role in understanding the composition and properties of pulp and fiber. These analyses provide detailed information about various chemical components and compounds present in the pulp, which is important for assessing its quality, usability, and environmental impact. Below is a detailed description of some of the chemical analyses conducted:

  • - Carbohydrates (internal method)
  • - Alpha-, beta-, gamma-cellulose (internal method)
  • - Extractives content
  • - Free phenol groups (internal method)
  • - Fiber charge (SCAN-CM 65)
  • - Kappa number (ISO 302)
  • - Metals (SCAN-CM 38, 54, 63)
  • - Viscosity (ISO 5351)
  • - Washable COD/TOC (SCAN-C45, SCAN-CM44)
  • By conducting these chemical analyses, a deeper understanding of the pulp's composition and properties can be obtained, which is crucial for optimizing the production process and ensuring that the produced pulp meets the desired requirements and specifications.

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