Optimization of Mechanical Pulp Quality in Multi-Stage Refining Systems

多级精炼系统中机械纸浆质量的优化

• 批准号: 321987-2005
• 负责人: Olson, James
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=365204
• 关键词: Optimization; Mechanical; Pulp; Quality; Multi

The objective of this proposal is to develop the tools, methods and understanding necessary to better utilize the complex natural fibre base in British Columbia; a fibre base that contains a wide variety of species that are challenging to use in high value paper grades.  Although our forest, with its extremely diverse species mix, presents significant difficulties for the paper maker, it may be possible, though advanced fibre processing, to discover an inherent advantage in our forest.  This proposal specifically examines the application of advanced fibre fractionation and multi-stage refining to produce high value mechanical printing papers that can compete in markets traditionally dominated by coated and free sheet papers.   The research can be broken into three distinct areas where the first two focus on tool development and process knowledge required to complete the third, core project.    1. Development of a new and novel method of measuring fibre surface area and fibre network compliance through a pulp sedimentation test.   2. Application of the sedimentation test to understand how fibre fractionation using pressure screens changes the quality of the fibres being sent to the multi-stage reject refining process. 3. Application of the new measurement to understand how species, fibre fractionation and multi-stage refining will affect fibre surface area and fibre network compliance. The proposed research will be conducted in close collaboration with Norske-Canada Crofton mill with the experimental refining and fractionation trials being conducted at the mill and at UBC.

这项建议的目标是开发必要的工具、方法和理解，以便更好地利用不列颠哥伦比亚省复杂的天然纤维基地；一种纤维基础，含有种类繁多的品种，很难用于高价值的纸张等级。尽管我们的森林具有极其多样化的物种组合，给造纸商带来了巨大的困难，但通过先进的纤维加工，有可能在我们的森林中发现固有的优势。本提案专门研究了先进的纤维分级和多级精炼的应用，以生产高价值的机械打印纸，这些纸张可以在传统上由涂布纸和无纸纸主导的市场上竞争。虽然这项研究可以分为三个不同的领域，前两个领域专注于完成第三个领域所需的工具开发和工艺知识，核心项目。1.开发一种通过纸浆沉降测试测量纤维表面积和纤维网络柔顺性的新方法。2.应用沉降测试，以了解使用压力筛进行的纤维分级如何改变送往多级废纸精炼过程的纤维质量。3.应用新的测量方法来了解品种、纤维分级和多阶段精炼将如何影响纤维表面积和纤维网络顺应性。拟议的研究将与Norske-Canada Crofton炼油厂密切合作，并在该炼油厂和UBC进行实验性精炼和分馏试验。