Abstract:

Considering that the present energy-using analysis and simulation of papermaking process are lacking in the integrated analyses of the material, energy and exergy flows,first,the balanced calculation of the three types of flows is employed to model the papermaking process. Next,the general modeling methods as well as the basic models of papermaking process are presented. Then,the basic abstract unit models to respectively describe the material,energy and exergy flows are established,and the general mathematical models for the energy and exergy flow calculations of multiple materials as well as an unit analysis parameter set are presented. Finally,the material property database of water,vapor,dry air,etc.,are established, and the general and fundamental functional modules to describe the mix and split of integrated analyses of the above three flows in the papermaking process are presented,thus providing a technology and implementation foundation for the modeling of the energy system for a whole papermaking mill based on the integration of energy and material flows.

Key words: papermaking process, modeling, energy flow, material flow, exergy analysis