Regulation of the application of the bleaching system to the paperboard system and the paper mill

摘要

of the Invention An on-line automated control system for use in drainage and retention chemical programs used in tissue, paper and board mills is disclosed. Utilizing strategically placed sensors in the wet end of a paper machine, the fiber charge and turbidity, prior to the headbox as well as in the white water loop, are constantly measured. Based on these readings, the addition of a chemical coagulant and a chemical drainage and retention aid are controlled via a computer system.