Pyro Green-Gas (formerly known as AirScience Technologies Inc.)
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AirScience - Model VSA -Vacuum Swing Adsorption Process System
From the outside a VSA unit is very similar to an activated carbon system (several towers in parallel with an inlet manifold and an outlet manifold, each with motorized isolation valves. The difference resides in the type of adsorbent media (activated carbon for one, molecular sieve for the other) and the fact that a VSA system has a vacuum system connection at each tower.
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The vacuum system consisting of a vacuum pump and a series of motorized valves to allow the cycling of each tower from adsorption to desorption mode.
The vent gas is then compressed, chilled to condense siloxanes, then after a separation stage, re-injected at the inlet of the VSA towers.
