This work aims at developing sustainable processes for pulp and paper industry by integration of the biorefinery concept to an existing pulp and paper process. A systematic methodology employing a superstructure-based process synthesis approach is employed with support from computer-aided tools to determine potential pathways for a long-term sustainable growth objective. A superstructure of the multi-product biorefinery process network for the pulp and paper industry is developed. It is divided into three sub-networks, a chemical pulping section, a biochemical production section and a black liquor utilization section. Superstructure optimization is performed with the objective to maximize profit to determine optimal integrated networks for three scenarios. The obtained results provide useful insights for further development of the optimal networks as sustainable integrated biorefinery combined with pulp and paper mills.

这项工作旨在通过将生物精炼概念与现有的纸浆和造纸工艺相结合，开发用于纸浆和造纸工业的可持续工艺。在计算机辅助工具的支持下，采用了基于上层建筑的过程综合方法的系统方法论，以确定实现长期可持续增长目标的潜在途径。开发了用于纸浆和造纸工业的多产品生物精炼工艺网络的上层建筑。它分为三个子网络：化学制浆区，生化生产区和黑液利用区。执行上层建筑优化的目的是使利润最大化，从而确定三种情况下的最佳集成网络。