Flue gas decarbonization
AssigneeAir Products and Chemicals, Inc.
InventorsMozhgan Alimohammadi Zanjani, David Ross Graham, Donald E. Henry, Donn Michael Herron, Roger Anthony Dewing
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Abstract
A process for separating carbon dioxide from a feed gas comprising carbon dioxide may comprise compressing the feed gas in a feed gas compressor to produce a compressed feed gas. The process may also comprise separating the compressed feed gas by an adsorption process comprising: using a plurality of adsorbent beds to produce a carbon dioxide-enriched product stream and a carbon dioxide-depleted stream, and a blowdown step. A blowdown gas may be removed from the adsorbent bed. The process may also comprise compressing the blowdown gas in the feed gas compressor and combining the blowdown gas with the compressed feed gas.
Claims11
A process for separating carbon dioxide from a feed gas comprising carbon dioxide, the process comprising:
- compressing the feed gas in a feed gas compressor to produce a compressed feed gas;
- separating the compressed feed gas by an adsorption process comprising:
- using a plurality of adsorbent beds to produce a carbon dioxide-enriched product stream and a carbon dioxide-depleted stream, and a blowdown step during which a blowdown gas is removed from the adsorbent bed;
- and
- compressing the blowdown gas in the feed gas compressor and combining the blowdown gas with the compressed feed gas.
A process for separating carbon dioxide from a feed gas comprising carbon dioxide comprising:
- compressing the feed gas to produce a compressed feed gas;
- separating the compressed feed gas by an adsorption process comprising:
- using a plurality of adsorbent beds comprising an adsorbent material to produce a carbon dioxide-enriched product stream and a carbon dioxide-depleted stream;
- wherein the partial pressure of carbon dioxide in the compressed feed gas is maintained within a given pressure range, wherein the given pressure range is a function of the adsorbent material.
A process for separating carbon dioxide from a feed gas comprising carbon dioxide, the process comprising:
- compressing the feed gas in a feed gas compressor to produce a compressed feed gas;
- separating the compressed feed gas by an adsorption process comprising:
- using a plurality of adsorbent beds to produce a carbon dioxide-enriched product stream and a carbon dioxide-depleted stream, and a blowdown step during which a blowdown gas is removed from the adsorbent bed;
- compressing the blowdown gas in the feed gas compressor and combining the blowdown gas with the compressed feed gas;
- separating the carbon dioxide-depleted stream by selective permeation to produce a carbon dioxide-enriched permeate stream and a carbon dioxide-lean retentate stream;
- and
- compressing the carbon dioxide-enriched permeate stream in the feed gas compressor.
Dependencies are inferred from the claim text.