Sizing Solution Delivery Systems for A Sizing Press and Methods for Reducing Sizing Solution Volumes During Operation Therefof

摘要

Sizing solution delivery systems for a sizing press and methods for reducing sizing solution volumes generally include a service tank containing an untreated sizing solution (e.g., starch), a standpipe having a volume capacity of less than the service tank, and an auxiliary chemical tank downstream from the service tank and the standpipe. The standpipe is configured to collect overflow fluid from the size press during use. In this configuration, the volumes of overflow solution provided in the loop are shortened, which reduces sizing solution volumes needed during purging for paper grade changes. In addition, time and equilibrium cycles are concomitantly reduced. Also disclosed are methods for reducing the sizing solution volumes and/or increasing sizing efficiency with the sizing solution delivery systems.