Design of Blend Chest Agitators; Guidelines, data required and agitator sizing, 2014 PEERS Conference

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Mixing and blending are critical to a successful pulp/paper mill operation. The mass concentration of the pulp suspensions (aka consistency) in chests must be uniform at all locations. This is typically done with open face high efficiency impellers (hydrofoils). Along with a properly sized agitator the proper chest design and feed/pump suction locations are also critical to uniform consistency. One method used to provide uniformity is the momentum method which this presentation is based on. The mathematical model for the momentum method will be presented along with guidelines for chest designs and agitator locations.