Process System Approaches for Resources Recycling in Pulp and Paper Industries

6 th Report; Optimal Reginal Distribution of Waste Paper and Board in Recovery and Utilization System

Abstract

Regional distribution of resources is one of the problems to be considered in recycle utilization of resources. In this paper, a general representation of a distribution problem of resources is given at first. This concludes that the problem becomes a linear or nonlinear programming problem, in general, of determining the distribution coefficients of resources so as to minimize a performance index. Next, problems of optimal distribution including the production stage of paper and board are discussed.
It is shown that the recovery rate of waste paper has an essential role in minimizing the amount of virgin pulp required for production of paper and board. It is also necessary to balance the recovery rate and utilization rate in each region.