The POMix - A Compact Stock Processor

摘要

Conventional stock blending and metering systems consist of large mix chests and machine chests for the blending rnand mixing of multiple furnishes and wet end additives. These chests also level out some of the variations due to rnpoor consistency control and variable raw material. The resultant stability is somewhat acceptable but due to the rnlarge volumes, controllability of rate changes is generally poor and losses with grade changes can be significant. The rnlarge chests take up a lot of space and poor agitation can result in short circuiting of stock. rn rnA patented, compact stock blending and metering processor replaces the conventional mixing and machine chests rnwith a single, space efficient unit. rn rnThis paper introduces the compact stock processor for high intensity mixing of multiple stock furnishes and wet end rnadditives in a single, compact unit. Process volumes equal only 10% of conventional systems, allowing quick and rnaccurate rate or grade changes as required. rn rnThe design features of the compact stock processor are presented. Technical issues are discussed, along with control rnstrategy and applications.