Energy reduction in mechanical pulping

全球对可再生、可持续、气候友好型木浆材料和产品的需求持续增加。满足全球纤维需求的关键是通过高得率的机械制浆，这种制浆比化学制浆多产生50%的纤维。加拿大具有得天独厚的优势，拥有丰富的森林、水和电力基础设施，这是这一能源密集型行业取得成功所必需的，使其成为具有重要战略意义的可再生出口行业。这一战略行业面临的最大威胁是过程中消耗的电能成本。在不列颠哥伦比亚省，机械制浆工业消耗近5TWh/年，占BC Hydro年产量的10%，占纤维生产成本的三分之一。能源技术很容易受到突然变化的影响。例如，转向插电式混合动力汽车可能会迅速而显著地改变电力成本，使目前的高产量纸浆生产变得不切实际。这一制造业的长期生存取决于我们大幅降低这些机械纸浆产品的比能量的能力，其中包括新闻纸、轻质涂布纸以及出口到纸巾和纸板的市场纸浆。为了降低机械制浆的能源消耗，我们开发了一个产学研合作项目，专注于开发和示范电力节能技术、工艺和策略。该计划将主要利益相关者聚集在一起，组成了一个由TMP工厂、相关供应商行业、研究机构、大学、公用事业公司和政府机构组成的独特技术团队。这项拟议研究计划的具体目标是开发和示范技术，以生产低于1000千瓦时/吨(能耗降低50%以上)的机械浆，适用于各种高质量纤维产品，包括通讯、包装和纸巾产品。这项拟议的方案包含三个主题，旨在转变钢厂以实施这些新技术，并为每个子流程制定优化战略。该提案的三个主题是过程优化、先进传感器和控制以及新产品开发。

The global demand for renewable, sustainable, climate-friendly wood pulp materials and products continues to increase. The key to meeting the global fibre demand is through high yield mechanical pulping that produces 50% more fibre than chemical processes. Canada is uniquely positioned with the abundant forests, water and electrical infrastructure required for this energy intensive industry to be successful making it a strategically important, renewable export industry. The single largest threat to this strategic industry is the cost of electrical energy consumed in the process. In BC the mechanical pulping industry consumes nearly 5 TWh/y or 10% of BC Hydro's annual production and represents 1/3 the cost of fibre production. Energy technologies are susceptible to sudden shifts. For example, the move to plug-in hybrid vehicles could quickly and dramatically alter the cost of electrical energy, making current high yield pulp production impractical. The long term survival of this manufacturing sector, which includes newsprint, light-weight coated papers, and market pulp for export into tissue and paperboard, depends on our ability to dramatically decrease the specific energy of these mechanical pulp products. To reduce the energy consumption in mechanical pulping, we have developed a university-industry collaborative research program focused on developing and demonstrating electrical energy reduction technologies, processes and strategies. This program brings together the key stakeholders to form a unique technical team of TMP mills, associated supplier industries, research institutes, universities, utilities and governments agencies. The specific objective of this proposed research program is to develop and demonstrate technologies to produce less mechanical pulp with less than 1000 kWh/t (more than a 50% energy reduction) suitable for a wide range of high quality fibre products, including communication, packaging and tissue products. This proposed program contains three themes aimed at transitioning mills to implement these new technologies and to develop optimization strategies for each sub-process. The 3 themes of the proposal are Process Optimization, Advanced Sensors and Controls, and New Product Development.