Improving disk filter design for better operational flexibility and increased capacity
Improving disk filter design for better operational flexibility and increased capacity
批准号:
570916-2021
负责人:
Parenteau, Mario
金额:
$5.46万
依托单位:
依托单位国家:
加拿大
项目类别:
Applied Research and Development Grants - Level 2
财政年份:
2021
资助国家:
加拿大
项目状态:
已结题
起止时间:
2021-01-01 至 2022-12-31
中文摘要
圆盘过滤器是造纸厂必不可少的部件。它的脱水和过滤作用减少了存储纸浆所需的空间和用水量。与造纸业非常相似,圆盘过滤器的设计和运行条件必须反映该行业不断变化的生产框架。从书写和印刷到包装级的整体转变,加上回收纤维的使用增加,需要增加圆盘过滤器的操作窗口和处理高游离度纸浆的能力。进一步减少用水量的努力还要求圆盘过滤器以比目前情况更高的浓度接受纸浆。Kadant是浆料准备和流程系统的领先供应商,旨在生产高质量的白纸和棕纸等级,在使用再生纤维纸浆方面拥有丰富的专业知识。该公司开始开发一种圆盘过滤器,可以处理高固相比例(高浓度)的纤维浆料。Innofibre在这一发展中发挥着主导作用。专门为这类开发工作设计的圆盘式过滤器的中试装置位于Innofibre,Kadant和Innofibre的共同努力已经在原始设计的基础上进行了重大的设计改进。特别是,Innofibre在流量输入接近100odmt/day/Disk的情况下运行滤盘时,达到了一个重要的里程碑。联合研究和开发工作的另一个成功之处是设计了侧喷射器,以提高高浓度输入纸浆的圆盘过滤能力。卡丹特希望利用Innofibre继续开发圆盘式过滤器。本研究和开发提案的总体目标是在纸浆和造纸工业的现代背景下增加圆盘过滤器的操作灵活性。
英文摘要
The disk filter is an essential component of a paper mill. Its dewatering and filtration actions reduce the space needed to store the pulp as well as water consumption. Much like the paper industry, the disk filter design and operational conditions must reflect the changing production framework of the industry. The overall shift from writing and printing to packaging grades, combined with an increased use of recycled fibres necessitates an increase in the operational window of the disk filter and an ability to treat high freeness pulps. Further water consumption reduction efforts also require the disk filter to accept pulp at higher consistency than what is presently the case. Kadant is a leading supplier of stock preparation and approach flow systems designed to produce high-quality white and brown paper grades, with extended expertise in the use of recycled fiber pulps. The company started the development of a disk filter that can process a fiber slurry with a high solid proportion (high consistency). Innofibre plays a leading role in this development. A pilot scale unit of the disk filter, specially designed for this kind of development work, is located at Innofibre and joint efforts by Kadant and Innofibre already led to significant design improvements with respect to the original design. In particular, Innofibre reached an essential milestone when it operated the filter disk at a flow input close to 100 odmt/day/disk. Another success of the joint research and development work was the design of a side-injector to increase the disk filter capacity for high-consistency input pulp. Kadant wishes to pursue the development of the disk filter with Innofibre. The overall goal of the present research and development proposal is to increase the operational flexibility of the disk filter in the modern context of the pulp and paper industry.
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