How often will desiccant tablets need to be added to a dryer vessel?
A typical gas dryer is designed to accommodate approximately three months of operation at full design load before needing replenishment. Vessels can be oversized to extend service intervals. The consumption rate of deliquescent desiccant in a natural gas dryer will vary according to gas temperature and flow rate. Low gas temperatures correspond to lower moisture loads and lower consumption rates. In many systems, pall rings or ceramic beads are used as a pre-layer to buffer desiccant beds from entrained liquid droplets and mists, minimizing premature consumption.
