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Improving disk filter design for better operational flexibility and increased capacity

Improving disk filter design for better operational flexibility and increased capacity
改进盘式过滤器设计,提高操作灵活性并提高容量
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

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中文摘要
翻译
盘式过滤机是造纸厂的重要组成部分。它的脱水和过滤作用减少了储存纸浆所需的空间以及水的消耗。就像造纸行业一样,盘式过滤机的设计和操作条件必须反映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,再加上回收纤维的使用增加,需要增加盘式过滤器的操作窗口和处理高游离度纸浆的能力。进一步减少水消耗的努力还需要盘式过滤器以比目前的情况更高的稠度接受纸浆。Kadant是一家领先的浆料制备和流送系统供应商,其设计用于生产高质量的白色和棕色纸张,并在使用再生纤维纸浆方面拥有丰富的专业知识。该公司开始开发可处理高固体比例(高浓度)纤维浆料的盘式过滤器。Innofibre在这一发展中发挥着主导作用。专门为这种开发工作设计的盘式过滤器的中试规模单元位于Innofibre,Kadant和Innofibre的共同努力已经导致了相对于原始设计的重大设计改进。特别是,当Innofibre以接近100 odmt/天/盘的流量输入操作过滤盘时,它达到了一个重要的里程碑。联合研发工作的另一个成功之处是设计了一种侧喷式过滤器,以提高圆盘过滤器对高浓度输入纸浆的过滤能力。Kadant希望继续与Innofibre合作开发盘式过滤器。本研究和开发建议的总体目标是在纸浆和造纸工业的现代背景下增加盘式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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