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 method of separating a feed gas mixture comprising a light key component, at least one heavy key component, and at least one intermediate key component 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 the light key component, wherein the high-pressure product stream is substantially free of the at least one intermediate key component and the at least one heavy key component;
- removing an intermediate-pressure vent gas stream enriched in the at least one intermediate key component;
- removing a low-pressure tail gas stream enriched in the at least one heavy key component.
A method of separating a feed gas mixture comprising hydrogen, at least one of carbon dioxide and ethylene, and at least one of methane, carbon monoxide, 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 the hydrogen, wherein the high-pressure product stream is substantially free of the at least one of the carbon dioxide and the ethylene, and the at least one of the methane, the carbon monoxide, and the nitrogen, and the argon;
- removing an intermediate-pressure vent gas stream enriched in the at least one of the carbon monoxide, the methane, the nitrogen, and the argon through an outlet on the same side of the adsorption bed as the high-pressure product;
- and
- removing a low-pressure tail gas stream enriched in the at least one of the carbon dioxide and ethylene.
Dependencies are inferred from the claim text.