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。纤维悬浮液在大容器中搅拌，以混合各种配料成分，使悬浮液成分均匀，并修改纤维性能，例如消除延迟。目前的混合箱设计是基于有限的公开信息和由混合器供应商持有的专有标准，并基于安装经验。然而，这些设计所产生的混合质量很少被测量，而且当测量时发现远不是理想的。不理想影响悬浮液的均匀性，对纸机的运行性能、漂白时化学处理的均匀性和成品的均匀性都有不利影响。

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.