Methods of removing contaminants from a hydrocarbon stream by swing adsorption and related apparatus and systems
First Claim
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1. A cyclical swing adsorption process for removing contaminants from gas feed streams comprising the steps of:
- a) passing a gaseous feed stream at a feed pressure through a adsorbent bed unit having an adsorbent bed to separate one or more contaminants from the gaseous feed stream to form a product stream;
b) interrupting the flow of the gaseous feed stream;
c) performing a plurality of depressurization steps, wherein each depressurization step comprises passing a portion of the gas from the adsorbent bed unit into one or more equalization vessels that are dedicated to the adsorbent bed unit and the depressurization step to reduce the pressure within the adsorbent bed unit;
d) performing a plurality of re-pressurization steps, wherein each re-pressurization step comprises passing the portion of the gas from one or more equalization vessels associated with one of the plurality of depressurization steps to the adsorbent bed unit to increase the pressure within the adsorbent bed unit; and
e) repeating the steps a) to d) for at least one additional cycle.
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Abstract
A swing adsorption process for removing contaminants from a gaseous feed stream through a combination of a selective adsorbent material containing an effective amount of a non-adsorbent filler, adsorbent contactor design, and adsorption cycle design.
252 Citations
29 Claims
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1. A cyclical swing adsorption process for removing contaminants from gas feed streams comprising the steps of:
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a) passing a gaseous feed stream at a feed pressure through a adsorbent bed unit having an adsorbent bed to separate one or more contaminants from the gaseous feed stream to form a product stream; b) interrupting the flow of the gaseous feed stream; c) performing a plurality of depressurization steps, wherein each depressurization step comprises passing a portion of the gas from the adsorbent bed unit into one or more equalization vessels that are dedicated to the adsorbent bed unit and the depressurization step to reduce the pressure within the adsorbent bed unit; d) performing a plurality of re-pressurization steps, wherein each re-pressurization step comprises passing the portion of the gas from one or more equalization vessels associated with one of the plurality of depressurization steps to the adsorbent bed unit to increase the pressure within the adsorbent bed unit; and e) repeating the steps a) to d) for at least one additional cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A adsorbent bed assembly comprising:
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a housing having an interior region and configured to maintain a pressure from 0 bar to 80 bar within the interior region; an adsorbent bed disposed in the interior region and having a plurality of flow channels through the adsorbent bed, wherein the plurality of flow channels have an adsorbent material disposed on at least one surface within the plurality of flow channels; an inlet conduit disposed adjacent to the adsorbent bed and configured to pass a stream into the interior region from a location external to the housing; an outlet conduit disposed adjacent to the adsorbent bed and configured to pass a stream into the interior region from a location external to the housing; and a plurality of equalization vessels in fluid communication with the interior region and dedicated to the adsorbent bed. - View Dependent Claims (20, 21, 22, 23)
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24. A swing adsorption system comprising:
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a plurality of adsorbent bed assemblies, wherein each adsorbent bed assembly comprises; a housing having an interior region and configured to maintain a pressure from 0 bar a to 80 bar a within the interior region; an adsorbent bed disposed in the interior region and having a plurality of flow channels through the adsorbent bed, wherein the plurality of flow channels have an adsorbent material disposed on at least one surface within the plurality of flow channels; a inlet conduit disposed adjacent to the adsorbent bed and configured to pass a stream into the interior region from a location external to the housing; an outlet conduit disposed adjacent to the adsorbent bed and configured to pass a stream into the interior region from a location external to the housing; and a plurality of equalization vessels in fluid communication with the interior region and dedicated to the adsorbent bed. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification