An Intergrated Approach to Environmentally Conscious Paper Mill Operations

摘要-DOYLE-9729782纸浆和造纸工业是美国制造业中资本密集型的组成部分，是美国危险废物工业总产量的主要来源。为了保持和提高美国PPI的全球竞争力，同时确保安全、清洁和可持续的环境，废物最小化和处理措施需要整合到现有(和拟建)造纸厂的整体运营中。这项研究的目标是开发和演示基于计算的建模和优化方法，以促进这种集成操作。技术工作包括开发用于求解高结构混合整数线性规划算法(MILP‘s)的有效方法，开发用于描述噪声过程趋势的分层表示法，开发基于数学规划的大规模模型预测控制方法，以及研究用于纳入针对瞬时操作条件的离散过程模型选择的公式。开发的环保造纸厂运营方法将以与纸浆和造纸行业的工业合作者(Weyerhaeuser)合作的工业案例研究为基准。

Abstract - Doyle - 9729782 The pulp and paper industry (PPI), a very capital intensive component of the U.S. manufacturing sector, is a major source of the total U.S. industrial output of hazardous wastes. In order to maintain and enhance the global competitiveness of the U.S. PPI while ensuring a safe, clean, and sustainable environment, waste minimization and processing measures need to be integrated within the overall operation of existing (and proposed) paper mills. The goal of this research is to develop and demonstrate computing based modeling and optimization methodologies which will facilitate such integrated operations. The technical work involves development of efficient methods for solving highly structured mixed integer linear programming algorithms (MILP's), development of hierarchical representations for describing noisy process trends, the development of mathematical programming based approaches to large scale model predictive control, and the investigation of formulations for incorporating discrete choices of process models for transient operating conditions. The developed operational methodology for environmentally conscious paper mill operation will be benchmarked against an industrial case study in cooperation with an industrial collaborator from the pulp and paper industry (Weyerhaeuser).