The modular dryer utilises extruded and seamless high-tensile aluminium which is corrosion protected both inside and out with Alocrom. Columns, top and bottom manifolds are bolted together using high-tensile bolts. The dryer columns are filled with adsorption material using the well proven and tested Snow storm filling technique. This was developed for filling granular materials into gas masks where the consistency of fill was very important and any gas bypass would have a severe and detrimental effect on the performance. The technique utilises a filler device which controls the flow of desiccant material to achieve maximum packing density within the drying chamber. Channelling, fluidisation and rapid bed deterioration within the drying chamber is avoided using this technique as the compressed air passes equally and evenly through a tightly compacted bed. Actuating valves fitted into the inlet and exhaust housings provide positive operation of the system. Pneumatic signals control their operation and are generated from a variety of controller options (see below). The outlet valve arrangement utilises a check valve which automatically opens as system pressure builds within the dryer.
Photo 5.8.2.1
