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US 12,465,888 B1Granted
Liquid sorbent-enhanced ammonia production
AssigneeAlliance for Sustainable Energy, LLC
InventorsBryan Pivovar, Nicholas Thornburg
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Abstract
The present disclosure relates to a method that includes, in a first zone, contacting an ammonia-rich gas comprising ammonia with an ammonia-lean liquid sorbent resulting in the reversible transfer of at least a portion of the ammonia from the ammonia-rich gas to the ammonia-lean liquid sorbent, thereby forming an ammonia-rich liquid sorbent and an ammonia-lean gas and, in a second zone, removing at least a portion of the ammonia from the ammonia-rich liquid sorbent to form gaseous ammonia and regenerate the ammonia-lean liquid sorbent.
Claims21
A method comprising:
- in an ammonia synthesis reactor, reacting H2 and N2 to form an ammonia-rich gas;
- in a first zone, contacting the ammonia-rich gas with an ammonia-lean liquid sorbent comprising an acid (HA) resulting in reversible transfer of ammonia from the ammonia-rich gas to the ammonia-lean liquid sorbent, thereby forming an ammonia-rich liquid sorbent and an ammonia-lean gas;
- and
- in a second zone, removing ammonia from the ammonia-rich liquid sorbent to form gaseous ammonia and regenerate the ammonia-lean liquid, wherein:
- the acid comprises at least one of CsH2PO4, HBxFy, HSO3CaFb, H3PMo12O40·12H2O, H3PW12O40·nH2O, H4SiW12O40·pH2O, or a combination thereof,
- 1≤x≤20,4≤y≤42,1≤a≤10,3≤b≤21,6≤n≤24, and 6≤p≤29.
3 more elements
Dependencies are inferred from the claim text.