Dynamic mixing in pulp stock chests

宏观混合和混合是制浆造纸中最常用的混合工艺。纤维悬浮液在大型容器中搅拌，以混合各种配料成分，形成悬浮液成分的一致性，并改变纤维特性，如消除延迟。目前的搅拌箱设计基于有限的出版信息和搅拌机供应商持有的专有标准，并基于安装经验。然而，这些设计产生的混合质量很少被测量，当测量时发现远不是理想的。这种非理想性会影响悬浮液的均匀性，从而影响造纸机的运行性能、漂白过程中化学处理的均匀性和成品的均匀性。

Macroscale mixing and blending are the most common mixing processes used in pulp and paper manufacture. Fibre suspensions are agitated in large vessels to blend various furnish components, create uniformity in suspension composition and to modify fibre properties, such as remove latency. Current design of mixing chests is based on limited published information and on proprietary criteria held by mixer vendors and based on experience with installations. However, the quality of the mixing produced by these designs is rarely measured, and when measured is found to be far form ideal. The non-idealities affects the uniformity of the suspension, which adversely affects the runability of papermachines, the uniformity of chemical treatment in bleaching and the uniformity of finished products.