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ACOUSTOPHORESIS FOR PULP SEPARATION

用于纸浆分离的声泳法

基本信息

批准号：
530049-2018
负责人：
Quaegebeur, Nicolas
金额：
$ 1.82万
依托单位：
Université de Sherbrooke
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=662779
关键词：
ACOUSTOPHORESIS PULP SEPARATION

项目摘要

In pulp and paper mills, efficient techniques are required to remove accumulating solid suspensions in order to optimize raw material usage and closing up water systems due to environmental regulations. As a novel approach to solid removal, an ultrasonic method to clarify a white-water stream appears promising. For white-water stream clarification, the idea is to apply a normal force on flowing fibers using radiation force coming from an ultrasonic wave field (acoustophoresis), for the purpose of migrating the fibers and thus increasing the consistency of the pulp stream. ****This projects aims at determining the optimal configuration for feasible pulp manipulation in industrial environment. Both numerical and experimental methodologies will be developed in order to derive the optimal transducer configuration. Then, novel conceptual design will be proposed based on recommendation from the industrial partner and the preliminary results obtained in the first phase of the project. ****If the concept of ultrasonic pulp separation can be extended to industrial scale, this approach would be a major breakthrough for the Canadian pulp and paper industry and especially GL&V by enabling a minimization of installation footprint, reduction of operating cost and energy consumption, while reducing water consumption and more generally environmental impact per unit of pulp or paper production.******

在纸浆和造纸厂米尔斯中，需要有效的技术来去除积聚的固体悬浮物，以优化原材料的使用并由于环境法规而关闭水系统。超声波法作为一种新型的固体去除方法，在白水净化中具有广阔的应用前景。对于白水流的澄清，其想法是使用来自超声波场的辐射力（声电泳）在流动的纤维上施加法向力，以使纤维迁移，从而增加纸浆流的稠度。* 该项目旨在确定工业环境中可行的纸浆操作的最佳配置。数值和实验方法将被开发，以获得最佳的换能器配置。然后，根据工业合作伙伴的建议和项目第一阶段取得的初步成果，提出新的概念设计。* 如果超声波纸浆分离的概念可以扩展到工业规模，这种方法将是加拿大纸浆和造纸行业的一个重大突破，特别是GL&V，可以最大限度地减少安装占地面积，降低运营成本和能源消耗，同时减少单位纸浆或纸张生产的水消耗和更普遍的环境影响。