Further development of the magnesium bisulfite pulp production process

该合作研究项目将由新不伦瑞克大学的倪永浩博士和他的团队与Twin Rivers Paper Inc.合作进行。总体目标是进一步开发亚硫酸盐制浆工艺，特别是与亚硫酸盐制浆工艺中作为原料的亚硫酸盐废渣的利用相关的技术，以及D2阶段的优化。具体目标是：i)调查亚硫酸盐蒸煮废液对废渣精炼的影响，然后调查生成的亚硫酸盐纸浆的清洁度；ii)开发在亚硫酸盐制浆过程中利用其亚硫酸盐废液的整体技术；iii)优化D2级性能，以实现更高的白度增益。*制浆造纸工业对加拿大经济至关重要，新不伦瑞克也不例外。该省的许多社区都依赖于这一部门。为了提高这些纸浆厂的竞争力，它们需要以较低的成本生产出质量较好的纸浆和纸张产品。当然，利用亚硫酸盐废渣减少原料浪费和优化漂白化学品的使用是有效降低总体生产成本的两个重要方面。该项目的结果将使Twin Rivers Paper Inc.能够以较低的生产成本生产其产品，从而提高其在市场上的竞争力。*该项目开发的技术将使其他处于类似情况的加拿大纸浆厂受益。此外，培训学生/PDF进入该行业将使纸浆和造纸行业长期受益。**

This collaborative research project will be undertaken by the partnership of Dr. Yonghao Ni and his team at the University of New Brunswick, with Twin Rivers Paper Inc. The overall objective is to further develop the sulfite pulping process, in particular, related to the utilization of sulphite rejects as part of the raw material in the sulfite pulping process, and the optimization of D2 stage . The specific objectives are: i) to investigate the residual sulfite cooking liquor on the reject refining, and then the cleanness of resultant sulfite pulp; ii) to develop the overall technology in utilizing its sulfite rejects in the sulfite pulping process; and iii) to optimize the D2 stage performance so that a higher brightness gain can be achieved.****The Pulp and Paper Industry is vital to the Canadian economy, and it is no exception in New Brunswick. Many communities in the province are relying on this sector. To increase the competitiveness of these pulp mills, they need to produce pulp and paper products with good quality yet at a lower cost. Certainly decreasing the raw material waste by utilizing the sulfite rejects and optimizing the bleaching chemical usages are two important aspects that can be effective to decrease the overall production cost. The results from this project will enable Twin Rivers Paper Inc. to produce its product at a lower production cost, thus increase its competitiveness in the market place.** **The technologies developed from this project will benefit other Canadian pulp mills in similar situations. In addition, the training of the students/PDFs to enter into the industry will benefit the pulp and paper sector in the long run.**