Integration of bioproducts and pulp production in a BCTMP mill

BCTMP 工厂中生物产品和纸浆生产的整合

• 批准号: 355391-2011
• 负责人: Yuan, Zhirun
• 金额: $ 1.53万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=637783
• 关键词: Integration; bioproducts; pulp; production; BCTMP

Bleached chemi-thermomechanical pulp (BCTMP) has been increasingly used in papers as a cost-effective way to improve product performance. Canada produces over 70% of the world's market BCTMP and most of them are exported to Europe and Asia. However, the Canadian BCTMP producers are now facing strong competition from low-cost producers in the world and need to develop new technologies to increase their revenue and/or reduce production cost in order to stay competitive. Pre-extraction of hemicelluloses for bioproducts may provide additional revenue to a BCTMP mill. The extracted flows from hardwood BCTMP mills can be rich in hemicelluloses, thereofre, providing opportunities to pre-extract and convert these extracts into value-added bioproducts before making pulp. The chemical pre-treatment stage of a BCTMP process can easily be served as the pre-extraction stage without major capital investment. Earlier studies by the author et al. have shown that acid pre-extraction before the normal BCTMP process can reduce production cost by significantly reducing the refining energy. Pulp bulk and surface properties are not affected but brightness and strength are reduced. Therefore, work is required to investigate ways to maximize the extraction efficiency while minimizing the loss of brightness and strength during the pre-extraction stage. The extraction efficiency and impact on pulp properties with various chemicals in pre-extraction have not been studied for a BCTMP process. There are also challenges such as how to concentrate/separate/purify the hemicelluloses from the dilute stream. The present program addresses these needs and will aim to develop and implement new technologies/bioproducts for the Canadian BCTMP companies, therefore, increasing their competitiveness by providing new revenues and reducing production cost. What acquired from this study could also be applied to the thermomechanical pulp mills that are facing a significant downturn of the demand for paper advertising.

漂白的化学热力学纸浆（BCTMP）已越来越多地用作提高产品性能的成本效益方法。加拿大生产全球70％以上的BCTMP，其中大多数出口到欧洲和亚洲。但是，加拿大BCTMP生产商现在面临着世界上低成本生产商的激烈竞争，需要开发新技术来增加其收入和/或降低生产成本以保持竞争力。半纤维素对生物产品的萃取可能会为BCTMP磨坊提供额外的收入。从硬木BCTMP磨坊中提取的流量可以富含半纤维素，从而提供了将这些提取物预先提取和将这些提取物转换为增值生物产品的机会，然后再制作纸浆。 BCTMP工艺的化学预处理阶段可以轻松地作为无主要资本投资的提取阶段。作者等人的早期研究。已经表明，在正常BCTMP过程之前酸预萃取可以通过显着降低精炼能量来降低生产成本。纸浆散装和表面特性不受影响，但亮度和强度降低。因此，需要工作以研究最大化提取效率的方法，同时最大程度地减少拔取前阶段的亮度和强度的损失。尚未研究用于萃取前的各种化学物质的提取效率和对BCTMP过程中各种化学物质的影响。也存在挑战，例如如何浓缩/分离/净化稀释流的半纤维素。本计划解决了这些需求，并将旨在为加拿大BCTMP公司开发和实施新技术/生物产品，因此，通过提供新的收入并降低生产成本来提高其竞争力。从这项研究中获得的东西也可以应用于面临纸张广告需求的大量低迷的热力学纸浆厂。