Three-product pressure swing adsorption system
AssigneeUop LLC
InventorsBradley Russell, William Cady
Life of this patent
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Abstract
A three-product PSA system which produces three product streams from a feed gas mixture comprising a light key component, at least one heavy key component, and at least one intermediate key component is described. The three-product PSA system produces a high pressure product stream enriched in the light key component, a low pressure tail gas stream enriched in the at least one heavy key component, and an intermediate pressure vent gas stream enriched in the at least one intermediate key component.
Claims16
A three-product PSA unit comprising:
- a PSA adsorption vessel having a first end and a second end, the PSA adsorption vessel comprising at least one adsorbent layer, the PSA adsorption vessel having a first opening at the first end and a second opening at the second end, the first opening being in selective fluid communication with a high pressure feed gas inlet line and a low pressure tail gas outlet line, the second opening being in selective fluid communication with a high pressure product outlet line, an intermediate pressure vent gas outlet line, and a low pressure purge gas inlet line.
A method of separating a feed gas mixture comprising hydrogen, carbon dioxide, methane, carbon monoxide, and at least one of nitrogen and argon, comprising:
- introducing the feed gas mixture to a three-product pressure swing adsorption (PSA) system having a PSA cycle, the three-product PSA system comprising a three-product PSA unit;
- removing a high-pressure product stream enriched in hydrogen;
- removing an intermediate-pressure vent gas stream comprising hydrogen and the at least one of the nitrogen, and the argon;
- removing a low-pressure tail gas stream depleted in hydrogen and enriched in the carbon dioxide, carbon monoxide, and methane.
Dependencies are inferred from the claim text.