DRYPOINT^® AC cold-regenerated desiccant dryers

The DRYPOINT AC 119 - AC 196 cold-regeneration desiccant dryer, combined with a CLEARPOINT compressed air upstream filter and optional BEKOMAT condensate drain off, guarantees maximum safety and performance as a true system solution. The DRYPOINT AC desiccant dryer provides a stable supply of high quality compressed air by utilising high-grade desiccant and integrated compressed air post-filtration. With the integrated compressor synchronisation control system and a possible remote monitoring by utilising an alarm contact, this desiccant dryer ensures smooth, trouble-free and economical production processes and impresses with its flexibility and service friendliness.

The cold-regenerated DRYPOINT AC adsorption dryer guarantees a continuous supply of qualitative high-quality compressed air. Two vessels filled with desiccant (3) are arranged in parallel. The compressed air is routed through the CLEAR POINT upstream filter and the BEKOMAT condensate drain off (1), which remove particles and condensate from the compressed air as well as the lower switching valve (2) and into the adsorption vessel (3). It is then dried there to the required degree of dryness (pressure dew point). It subsequently flows through the upper switching valve (4) and a CLEARPOINT downstream filter (5), in which any possible resulting abrasion from the desiccant is retained. The dried and purified air is now available for use. While the compressed air is dried in one vessel, the regeneration of the adsorption agent takes place in the other. For this purpose, a partial flow of already dried air is relieved via a nozzle (6) to atmosphere pressure and routed through the desiccant bed for regeneration before it is subsequently released through a silencer (7) into the atmosphere. The switch over between both containers is executed as time-dependent in a specified cycle, optionally also as dew point-dependent. The dew point measured value can, of course, be transferred on optionally to a data logger such as the METPOINT BDL.

The DRYPOINT AC HP desiccant dryer is equipped with a compressor synchronisation control system as standard. The intelligent control system automatically saves the respective status of the process programme. The programme will be continued from the point at which it was interrupted with a restart. This therefore prevents an overload for adsorption desiccant. Operational safety and energy-saving coupling to the compressor operation are the advantages of this solution.

A highly effective calming space with separator and storage function is located at the inlet to the desiccant container. This ensures that condensate is kept away from the desiccant, bound together and transported away during regeneration.

1. The desiccant vessels are made in profiled stainless steel and have a large opening with a screw lid. This makes maintenance easy and even allows for proper inspections of the vessel inside..
2. The high-performance stainless-steel filters reliably remove solids and oil..
3. Pressurised components are made in stainless steel as standard..
4. Two separate pressure reducers for control and regeneration air respectively ensure reliable operation at all times.
5. The low pressure section is protected by a safety valve..
6. The control and regeneration air is drawn off behind the afterfilter, ensuring extra reliability and accurate control..
7. The DRYPOINT AC HP is equipped with a number of individual valve units. Their separate fixtures ensure that there is no extra load on the pipes and also protect the dryer against vibration. This enhances the operational safety of the dryer and reduces maintenance and spare parts costs.

Thanks to the compact design, the dryer fits into virtually any plant.