Adsorption device for demoisturising gases - contains a novel flap valve arrangement to cope better with large gas flows

摘要

Adsorption device comprising first and second drying vessels is provided with (i) flow-regulating, flap-type inlet- (300) and outlet valves, and (ii) parallel coupled discharged valves (180,180') contg. dry agent and located in blow channels (170,170') for removing adsorbed moisture. The outlet pipes are connected to each other via an air leakage pipe with a shut-off valve for bringing in gas from the main flow to the vessel being regenerated. the inlet valve comprises a flap element (330) movable about an axle (340) between two end positions, one of which has one side of the element urged tightly against a first valve position (81) at the inlet of the first vessel inlet pipe (10), whilst the second end position has the side of the element urged against a second valve position (81') at the inlet of the second vessel inlet pipe (10'). The novelty of the arrangement is that the flap element comprises fixed first and second flow regulating means (7,5;7',5') the first of which open out into the first blow channel (170) extending from the inlet pipe to the first vessel, whilst the second means open out into the second blow channel (170') extending from the inlet pipe to the second vessel.